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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:20:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:20:29 +0000
commit631cd5845e8de329d0e227aaa707d7ea228b8f8f (patch)
treea1b87c8f8cad01cf18f7c5f57a08f102771ed303 /vendor/clap/src/builder
parentAdding debian version 1.69.0+dfsg1-1. (diff)
downloadrustc-631cd5845e8de329d0e227aaa707d7ea228b8f8f.tar.xz
rustc-631cd5845e8de329d0e227aaa707d7ea228b8f8f.zip
Merging upstream version 1.70.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/clap/src/builder')
-rw-r--r--vendor/clap/src/builder/action.rs344
-rw-r--r--vendor/clap/src/builder/app_settings.rs172
-rw-r--r--vendor/clap/src/builder/arg.rs4647
-rw-r--r--vendor/clap/src/builder/arg_group.rs596
-rw-r--r--vendor/clap/src/builder/arg_predicate.rs19
-rw-r--r--vendor/clap/src/builder/arg_settings.rs145
-rw-r--r--vendor/clap/src/builder/command.rs4703
-rw-r--r--vendor/clap/src/builder/debug_asserts.rs887
-rw-r--r--vendor/clap/src/builder/mod.rs60
-rw-r--r--vendor/clap/src/builder/os_str.rs336
-rw-r--r--vendor/clap/src/builder/possible_value.rs234
-rw-r--r--vendor/clap/src/builder/range.rs283
-rw-r--r--vendor/clap/src/builder/resettable.rs211
-rw-r--r--vendor/clap/src/builder/str.rs307
-rw-r--r--vendor/clap/src/builder/styled_str.rs349
-rw-r--r--vendor/clap/src/builder/tests.rs56
-rw-r--r--vendor/clap/src/builder/value_hint.rs95
-rw-r--r--vendor/clap/src/builder/value_parser.rs2435
18 files changed, 0 insertions, 15879 deletions
diff --git a/vendor/clap/src/builder/action.rs b/vendor/clap/src/builder/action.rs
deleted file mode 100644
index 9739f8800..000000000
--- a/vendor/clap/src/builder/action.rs
+++ /dev/null
@@ -1,344 +0,0 @@
-/// Behavior of arguments when they are encountered while parsing
-///
-/// # Examples
-///
-#[cfg_attr(not(feature = "help"), doc = " ```ignore")]
-#[cfg_attr(feature = "help", doc = " ```")]
-/// # use clap::Command;
-/// # use clap::Arg;
-/// let cmd = Command::new("mycmd")
-/// .arg(
-/// Arg::new("special-help")
-/// .short('?')
-/// .action(clap::ArgAction::Help)
-/// );
-///
-/// // Existing help still exists
-/// let err = cmd.clone().try_get_matches_from(["mycmd", "-h"]).unwrap_err();
-/// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayHelp);
-///
-/// // New help available
-/// let err = cmd.try_get_matches_from(["mycmd", "-?"]).unwrap_err();
-/// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayHelp);
-/// ```
-#[derive(Clone, Debug)]
-#[non_exhaustive]
-#[allow(missing_copy_implementations)] // In the future, we may accept `Box<dyn ...>`
-pub enum ArgAction {
- /// When encountered, store the associated value(s) in [`ArgMatches`][crate::ArgMatches]
- ///
- /// **NOTE:** If the argument has previously been seen, it will result in a
- /// [`ArgumentConflict`][crate::error::ErrorKind::ArgumentConflict] unless
- /// [`Command::args_override_self(true)`][crate::Command::args_override_self] is set.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::Set)
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd", "--flag", "value"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_many::<String>("flag").unwrap_or_default().map(|v| v.as_str()).collect::<Vec<_>>(),
- /// vec!["value"]
- /// );
- /// ```
- Set,
- /// When encountered, store the associated value(s) in [`ArgMatches`][crate::ArgMatches]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::Append)
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd", "--flag", "value1", "--flag", "value2"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_many::<String>("flag").unwrap_or_default().map(|v| v.as_str()).collect::<Vec<_>>(),
- /// vec!["value1", "value2"]
- /// );
- /// ```
- Append,
- /// When encountered, act as if `"true"` was encountered on the command-line
- ///
- /// If no [`default_value`][super::Arg::default_value] is set, it will be `false`.
- ///
- /// No value is allowed. To optionally accept a value, see
- /// [`Arg::default_missing_value`][super::Arg::default_missing_value]
- ///
- /// **NOTE:** If the argument has previously been seen, it will result in a
- /// [`ArgumentConflict`][crate::error::ErrorKind::ArgumentConflict] unless
- /// [`Command::args_override_self(true)`][crate::Command::args_override_self] is set.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::SetTrue)
- /// );
- ///
- /// let matches = cmd.clone().try_get_matches_from(["mycmd", "--flag"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_flag("flag"),
- /// true
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_flag("flag"),
- /// false
- /// );
- /// ```
- ///
- /// You can use [`TypedValueParser::map`][crate::builder::TypedValueParser::map] to have the
- /// flag control an application-specific type:
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// # use clap::builder::TypedValueParser as _;
- /// # use clap::builder::BoolishValueParser;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::SetTrue)
- /// .value_parser(
- /// BoolishValueParser::new()
- /// .map(|b| -> usize {
- /// if b { 10 } else { 5 }
- /// })
- /// )
- /// );
- ///
- /// let matches = cmd.clone().try_get_matches_from(["mycmd", "--flag"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_one::<usize>("flag").copied(),
- /// Some(10)
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_one::<usize>("flag").copied(),
- /// Some(5)
- /// );
- /// ```
- SetTrue,
- /// When encountered, act as if `"false"` was encountered on the command-line
- ///
- /// If no [`default_value`][super::Arg::default_value] is set, it will be `true`.
- ///
- /// No value is allowed. To optionally accept a value, see
- /// [`Arg::default_missing_value`][super::Arg::default_missing_value]
- ///
- /// **NOTE:** If the argument has previously been seen, it will result in a
- /// [`ArgumentConflict`][crate::error::ErrorKind::ArgumentConflict] unless
- /// [`Command::args_override_self(true)`][crate::Command::args_override_self] is set.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::SetFalse)
- /// );
- ///
- /// let matches = cmd.clone().try_get_matches_from(["mycmd", "--flag"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_flag("flag"),
- /// false
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_flag("flag"),
- /// true
- /// );
- /// ```
- SetFalse,
- /// When encountered, increment a `u8` counter
- ///
- /// If no [`default_value`][super::Arg::default_value] is set, it will be `0`.
- ///
- /// No value is allowed. To optionally accept a value, see
- /// [`Arg::default_missing_value`][super::Arg::default_missing_value]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::Count)
- /// );
- ///
- /// let matches = cmd.clone().try_get_matches_from(["mycmd", "--flag", "--flag"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_count("flag"),
- /// 2
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_count("flag"),
- /// 0
- /// );
- /// ```
- Count,
- /// When encountered, display [`Command::print_help`][super::Command::print_help]
- ///
- /// Depending on the flag, [`Command::print_long_help`][super::Command::print_long_help] may be shown
- ///
- /// # Examples
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("special-help")
- /// .short('?')
- /// .action(clap::ArgAction::Help)
- /// );
- ///
- /// // Existing help still exists
- /// let err = cmd.clone().try_get_matches_from(["mycmd", "-h"]).unwrap_err();
- /// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayHelp);
- ///
- /// // New help available
- /// let err = cmd.try_get_matches_from(["mycmd", "-?"]).unwrap_err();
- /// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayHelp);
- /// ```
- Help,
- /// When encountered, display [`Command::version`][super::Command::version]
- ///
- /// Depending on the flag, [`Command::long_version`][super::Command::long_version] may be shown
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .version("1.0.0")
- /// .arg(
- /// Arg::new("special-version")
- /// .long("special-version")
- /// .action(clap::ArgAction::Version)
- /// );
- ///
- /// // Existing help still exists
- /// let err = cmd.clone().try_get_matches_from(["mycmd", "--version"]).unwrap_err();
- /// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayVersion);
- ///
- /// // New help available
- /// let err = cmd.try_get_matches_from(["mycmd", "--special-version"]).unwrap_err();
- /// assert_eq!(err.kind(), clap::error::ErrorKind::DisplayVersion);
- /// ```
- Version,
-}
-
-impl ArgAction {
- /// Returns whether this action accepts values on the command-line
- ///
- /// [`default_values`][super::Arg::default_values] and [`env`][super::Arg::env] may still be
- /// processed.
- pub fn takes_values(&self) -> bool {
- match self {
- Self::Set => true,
- Self::Append => true,
- Self::SetTrue => false,
- Self::SetFalse => false,
- Self::Count => false,
- Self::Help => false,
- Self::Version => false,
- }
- }
-
- pub(crate) fn default_value(&self) -> Option<&'static std::ffi::OsStr> {
- match self {
- Self::Set => None,
- Self::Append => None,
- Self::SetTrue => Some(std::ffi::OsStr::new("false")),
- Self::SetFalse => Some(std::ffi::OsStr::new("true")),
- Self::Count => Some(std::ffi::OsStr::new("0")),
- Self::Help => None,
- Self::Version => None,
- }
- }
-
- pub(crate) fn default_missing_value(&self) -> Option<&'static std::ffi::OsStr> {
- match self {
- Self::Set => None,
- Self::Append => None,
- Self::SetTrue => Some(std::ffi::OsStr::new("true")),
- Self::SetFalse => Some(std::ffi::OsStr::new("false")),
- Self::Count => None,
- Self::Help => None,
- Self::Version => None,
- }
- }
-
- pub(crate) fn default_value_parser(&self) -> Option<super::ValueParser> {
- match self {
- Self::Set => None,
- Self::Append => None,
- Self::SetTrue => Some(super::ValueParser::bool()),
- Self::SetFalse => Some(super::ValueParser::bool()),
- Self::Count => Some(crate::value_parser!(u8).into()),
- Self::Help => None,
- Self::Version => None,
- }
- }
-
- #[cfg(debug_assertions)]
- pub(crate) fn value_type_id(&self) -> Option<crate::parser::AnyValueId> {
- use crate::parser::AnyValueId;
-
- match self {
- Self::Set => None,
- Self::Append => None,
- Self::SetTrue => None,
- Self::SetFalse => None,
- Self::Count => Some(AnyValueId::of::<CountType>()),
- Self::Help => None,
- Self::Version => None,
- }
- }
-}
-
-pub(crate) type CountType = u8;
diff --git a/vendor/clap/src/builder/app_settings.rs b/vendor/clap/src/builder/app_settings.rs
deleted file mode 100644
index 7a9ff8c69..000000000
--- a/vendor/clap/src/builder/app_settings.rs
+++ /dev/null
@@ -1,172 +0,0 @@
-// Std
-use std::ops::BitOr;
-
-#[allow(unused)]
-use crate::Arg;
-#[allow(unused)]
-use crate::Command;
-
-// Third party
-use bitflags::bitflags;
-
-#[doc(hidden)]
-#[derive(Debug, Copy, Clone, PartialEq, Eq)]
-pub(crate) struct AppFlags(Flags);
-
-impl Default for AppFlags {
- fn default() -> Self {
- AppFlags(Flags::COLOR_AUTO)
- }
-}
-
-/// Application level settings, which affect how [`Command`] operates
-///
-/// **NOTE:** When these settings are used, they apply only to current command, and are *not*
-/// propagated down or up through child or parent subcommands
-///
-/// [`Command`]: crate::Command
-#[derive(Debug, PartialEq, Copy, Clone)]
-#[non_exhaustive]
-pub(crate) enum AppSettings {
- IgnoreErrors,
- AllowHyphenValues,
- AllowNegativeNumbers,
- AllArgsOverrideSelf,
- AllowMissingPositional,
- TrailingVarArg,
- DontDelimitTrailingValues,
- InferLongArgs,
- InferSubcommands,
- SubcommandRequired,
- AllowExternalSubcommands,
- Multicall,
- SubcommandsNegateReqs,
- ArgsNegateSubcommands,
- SubcommandPrecedenceOverArg,
- ArgRequiredElseHelp,
- NextLineHelp,
- DisableColoredHelp,
- DisableHelpFlag,
- DisableHelpSubcommand,
- DisableVersionFlag,
- PropagateVersion,
- Hidden,
- HidePossibleValues,
- HelpExpected,
- NoBinaryName,
- #[allow(dead_code)]
- ColorAuto,
- ColorAlways,
- ColorNever,
- Built,
- BinNameBuilt,
-}
-
-bitflags! {
- struct Flags: u64 {
- const SC_NEGATE_REQS = 1;
- const SC_REQUIRED = 1 << 1;
- const ARG_REQUIRED_ELSE_HELP = 1 << 2;
- const PROPAGATE_VERSION = 1 << 3;
- const DISABLE_VERSION_FOR_SC = 1 << 4;
- const WAIT_ON_ERROR = 1 << 6;
- const DISABLE_VERSION_FLAG = 1 << 10;
- const HIDDEN = 1 << 11;
- const TRAILING_VARARG = 1 << 12;
- const NO_BIN_NAME = 1 << 13;
- const ALLOW_UNK_SC = 1 << 14;
- const LEADING_HYPHEN = 1 << 16;
- const NO_POS_VALUES = 1 << 17;
- const NEXT_LINE_HELP = 1 << 18;
- const DISABLE_COLORED_HELP = 1 << 20;
- const COLOR_ALWAYS = 1 << 21;
- const COLOR_AUTO = 1 << 22;
- const COLOR_NEVER = 1 << 23;
- const DONT_DELIM_TRAIL = 1 << 24;
- const ALLOW_NEG_NUMS = 1 << 25;
- const DISABLE_HELP_SC = 1 << 27;
- const ARGS_NEGATE_SCS = 1 << 29;
- const PROPAGATE_VALS_DOWN = 1 << 30;
- const ALLOW_MISSING_POS = 1 << 31;
- const TRAILING_VALUES = 1 << 32;
- const BUILT = 1 << 33;
- const BIN_NAME_BUILT = 1 << 34;
- const VALID_ARG_FOUND = 1 << 35;
- const INFER_SUBCOMMANDS = 1 << 36;
- const CONTAINS_LAST = 1 << 37;
- const ARGS_OVERRIDE_SELF = 1 << 38;
- const HELP_REQUIRED = 1 << 39;
- const SUBCOMMAND_PRECEDENCE_OVER_ARG = 1 << 40;
- const DISABLE_HELP_FLAG = 1 << 41;
- const INFER_LONG_ARGS = 1 << 43;
- const IGNORE_ERRORS = 1 << 44;
- const MULTICALL = 1 << 45;
- const EXPAND_HELP_SUBCOMMAND_TREES = 1 << 46;
- const NO_OP = 0;
- }
-}
-
-impl_settings! { AppSettings, AppFlags,
- ArgRequiredElseHelp
- => Flags::ARG_REQUIRED_ELSE_HELP,
- SubcommandPrecedenceOverArg
- => Flags::SUBCOMMAND_PRECEDENCE_OVER_ARG,
- ArgsNegateSubcommands
- => Flags::ARGS_NEGATE_SCS,
- AllowExternalSubcommands
- => Flags::ALLOW_UNK_SC,
- AllowHyphenValues
- => Flags::LEADING_HYPHEN,
- AllowNegativeNumbers
- => Flags::ALLOW_NEG_NUMS,
- AllowMissingPositional
- => Flags::ALLOW_MISSING_POS,
- ColorAlways
- => Flags::COLOR_ALWAYS,
- ColorAuto
- => Flags::COLOR_AUTO,
- ColorNever
- => Flags::COLOR_NEVER,
- DontDelimitTrailingValues
- => Flags::DONT_DELIM_TRAIL,
- DisableColoredHelp
- => Flags::DISABLE_COLORED_HELP,
- DisableHelpSubcommand
- => Flags::DISABLE_HELP_SC,
- DisableHelpFlag
- => Flags::DISABLE_HELP_FLAG,
- DisableVersionFlag
- => Flags::DISABLE_VERSION_FLAG,
- PropagateVersion
- => Flags::PROPAGATE_VERSION,
- HidePossibleValues
- => Flags::NO_POS_VALUES,
- HelpExpected
- => Flags::HELP_REQUIRED,
- Hidden
- => Flags::HIDDEN,
- Multicall
- => Flags::MULTICALL,
- NoBinaryName
- => Flags::NO_BIN_NAME,
- SubcommandsNegateReqs
- => Flags::SC_NEGATE_REQS,
- SubcommandRequired
- => Flags::SC_REQUIRED,
- TrailingVarArg
- => Flags::TRAILING_VARARG,
- NextLineHelp
- => Flags::NEXT_LINE_HELP,
- IgnoreErrors
- => Flags::IGNORE_ERRORS,
- Built
- => Flags::BUILT,
- BinNameBuilt
- => Flags::BIN_NAME_BUILT,
- InferSubcommands
- => Flags::INFER_SUBCOMMANDS,
- AllArgsOverrideSelf
- => Flags::ARGS_OVERRIDE_SELF,
- InferLongArgs
- => Flags::INFER_LONG_ARGS
-}
diff --git a/vendor/clap/src/builder/arg.rs b/vendor/clap/src/builder/arg.rs
deleted file mode 100644
index ca2d6acbc..000000000
--- a/vendor/clap/src/builder/arg.rs
+++ /dev/null
@@ -1,4647 +0,0 @@
-// Std
-#[cfg(feature = "env")]
-use std::env;
-#[cfg(feature = "env")]
-use std::ffi::OsString;
-use std::{
- cmp::{Ord, Ordering},
- fmt::{self, Display, Formatter},
- str,
-};
-
-// Internal
-use super::{ArgFlags, ArgSettings};
-use crate::builder::ArgPredicate;
-use crate::builder::IntoResettable;
-use crate::builder::OsStr;
-use crate::builder::PossibleValue;
-use crate::builder::Str;
-use crate::builder::StyledStr;
-use crate::builder::ValueRange;
-use crate::ArgAction;
-use crate::Id;
-use crate::ValueHint;
-use crate::INTERNAL_ERROR_MSG;
-
-/// The abstract representation of a command line argument. Used to set all the options and
-/// relationships that define a valid argument for the program.
-///
-/// There are two methods for constructing [`Arg`]s, using the builder pattern and setting options
-/// manually, or using a usage string which is far less verbose but has fewer options. You can also
-/// use a combination of the two methods to achieve the best of both worlds.
-///
-/// - [Basic API][crate::Arg#basic-api]
-/// - [Value Handling][crate::Arg#value-handling]
-/// - [Help][crate::Arg#help-1]
-/// - [Advanced Argument Relations][crate::Arg#advanced-argument-relations]
-/// - [Reflection][crate::Arg#reflection]
-///
-/// # Examples
-///
-/// ```rust
-/// # use clap::{Arg, arg, ArgAction};
-/// // Using the traditional builder pattern and setting each option manually
-/// let cfg = Arg::new("config")
-/// .short('c')
-/// .long("config")
-/// .action(ArgAction::Set)
-/// .value_name("FILE")
-/// .help("Provides a config file to myprog");
-/// // Using a usage string (setting a similar argument to the one above)
-/// let input = arg!(-i --input <FILE> "Provides an input file to the program");
-/// ```
-#[derive(Default, Clone)]
-pub struct Arg {
- pub(crate) id: Id,
- pub(crate) help: Option<StyledStr>,
- pub(crate) long_help: Option<StyledStr>,
- pub(crate) action: Option<ArgAction>,
- pub(crate) value_parser: Option<super::ValueParser>,
- pub(crate) blacklist: Vec<Id>,
- pub(crate) settings: ArgFlags,
- pub(crate) overrides: Vec<Id>,
- pub(crate) groups: Vec<Id>,
- pub(crate) requires: Vec<(ArgPredicate, Id)>,
- pub(crate) r_ifs: Vec<(Id, OsStr)>,
- pub(crate) r_ifs_all: Vec<(Id, OsStr)>,
- pub(crate) r_unless: Vec<Id>,
- pub(crate) r_unless_all: Vec<Id>,
- pub(crate) short: Option<char>,
- pub(crate) long: Option<Str>,
- pub(crate) aliases: Vec<(Str, bool)>, // (name, visible)
- pub(crate) short_aliases: Vec<(char, bool)>, // (name, visible)
- pub(crate) disp_ord: Option<usize>,
- pub(crate) val_names: Vec<Str>,
- pub(crate) num_vals: Option<ValueRange>,
- pub(crate) val_delim: Option<char>,
- pub(crate) default_vals: Vec<OsStr>,
- pub(crate) default_vals_ifs: Vec<(Id, ArgPredicate, Option<OsStr>)>,
- pub(crate) default_missing_vals: Vec<OsStr>,
- #[cfg(feature = "env")]
- pub(crate) env: Option<(OsStr, Option<OsString>)>,
- pub(crate) terminator: Option<Str>,
- pub(crate) index: Option<usize>,
- pub(crate) help_heading: Option<Option<Str>>,
- pub(crate) value_hint: Option<ValueHint>,
-}
-
-/// # Basic API
-impl Arg {
- /// Create a new [`Arg`] with a unique name.
- ///
- /// The name is used to check whether or not the argument was used at
- /// runtime, get values, set relationships with other args, etc..
- ///
- /// **NOTE:** In the case of arguments that take values (i.e. [`Arg::action(ArgAction::Set)`])
- /// and positional arguments (i.e. those without a preceding `-` or `--`) the name will also
- /// be displayed when the user prints the usage/help information of the program.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Arg::new("config")
- /// # ;
- /// ```
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- pub fn new(id: impl Into<Id>) -> Self {
- Arg::default().id(id)
- }
-
- /// Set the identifier used for referencing this argument in the clap API.
- ///
- /// See [`Arg::new`] for more details.
- #[must_use]
- pub fn id(mut self, id: impl Into<Id>) -> Self {
- self.id = id.into();
- self
- }
-
- /// Sets the short version of the argument without the preceding `-`.
- ///
- /// By default `V` and `h` are used by the auto-generated `version` and `help` arguments,
- /// respectively. You will need to disable the auto-generated flags
- /// ([`disable_help_flag`][crate::Command::disable_help_flag],
- /// [`disable_version_flag`][crate::Command::disable_version_flag]) and define your own.
- ///
- /// # Examples
- ///
- /// When calling `short`, use a single valid UTF-8 character which will allow using the
- /// argument via a single hyphen (`-`) such as `-c`:
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("config")
- /// .short('c')
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "-c", "file.toml"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("config").map(String::as_str), Some("file.toml"));
- /// ```
- ///
- /// To use `-h` for your own flag and still have help:
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .disable_help_flag(true)
- /// .arg(Arg::new("host")
- /// .short('h')
- /// .long("host"))
- /// .arg(Arg::new("help")
- /// .long("help")
- /// .global(true)
- /// .action(ArgAction::Help))
- /// .get_matches_from(vec![
- /// "prog", "-h", "wikipedia.org"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("host").map(String::as_str), Some("wikipedia.org"));
- /// ```
- #[inline]
- #[must_use]
- pub fn short(mut self, s: impl IntoResettable<char>) -> Self {
- if let Some(s) = s.into_resettable().into_option() {
- debug_assert!(s != '-', "short option name cannot be `-`");
- self.short = Some(s);
- } else {
- self.short = None;
- }
- self
- }
-
- /// Sets the long version of the argument without the preceding `--`.
- ///
- /// By default `version` and `help` are used by the auto-generated `version` and `help`
- /// arguments, respectively. You may use the word `version` or `help` for the long form of your
- /// own arguments, in which case `clap` simply will not assign those to the auto-generated
- /// `version` or `help` arguments.
- ///
- /// **NOTE:** Any leading `-` characters will be stripped
- ///
- /// # Examples
- ///
- /// To set `long` use a word containing valid UTF-8. If you supply a double leading
- /// `--` such as `--config` they will be stripped. Hyphens in the middle of the word, however,
- /// will *not* be stripped (i.e. `config-file` is allowed).
- ///
- /// Setting `long` allows using the argument via a double hyphen (`--`) such as `--config`
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "--config", "file.toml"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("cfg").map(String::as_str), Some("file.toml"));
- /// ```
- #[inline]
- #[must_use]
- pub fn long(mut self, l: impl IntoResettable<Str>) -> Self {
- self.long = l.into_resettable().into_option();
- self
- }
-
- /// Add an alias, which functions as a hidden long flag.
- ///
- /// This is more efficient, and easier than creating multiple hidden arguments as one only
- /// needs to check for the existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .long("test")
- /// .alias("alias")
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "--alias", "cool"
- /// ]);
- /// assert_eq!(m.get_one::<String>("test").unwrap(), "cool");
- /// ```
- #[must_use]
- pub fn alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.aliases.push((name, false));
- } else {
- self.aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as a hidden short flag.
- ///
- /// This is more efficient, and easier than creating multiple hidden arguments as one only
- /// needs to check for the existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .short('t')
- /// .short_alias('e')
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "-e", "cool"
- /// ]);
- /// assert_eq!(m.get_one::<String>("test").unwrap(), "cool");
- /// ```
- #[must_use]
- pub fn short_alias(mut self, name: impl IntoResettable<char>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- debug_assert!(name != '-', "short alias name cannot be `-`");
- self.short_aliases.push((name, false));
- } else {
- self.short_aliases.clear();
- }
- self
- }
-
- /// Add aliases, which function as hidden long flags.
- ///
- /// This is more efficient, and easier than creating multiple hidden subcommands as one only
- /// needs to check for the existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .long("test")
- /// .aliases(["do-stuff", "do-tests", "tests"])
- /// .action(ArgAction::SetTrue)
- /// .help("the file to add")
- /// .required(false))
- /// .get_matches_from(vec![
- /// "prog", "--do-tests"
- /// ]);
- /// assert_eq!(m.get_flag("test"), true);
- /// ```
- #[must_use]
- pub fn aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.aliases
- .extend(names.into_iter().map(|x| (x.into(), false)));
- self
- }
-
- /// Add aliases, which functions as a hidden short flag.
- ///
- /// This is more efficient, and easier than creating multiple hidden subcommands as one only
- /// needs to check for the existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .short('t')
- /// .short_aliases(['e', 's'])
- /// .action(ArgAction::SetTrue)
- /// .help("the file to add")
- /// .required(false))
- /// .get_matches_from(vec![
- /// "prog", "-s"
- /// ]);
- /// assert_eq!(m.get_flag("test"), true);
- /// ```
- #[must_use]
- pub fn short_aliases(mut self, names: impl IntoIterator<Item = char>) -> Self {
- for s in names {
- debug_assert!(s != '-', "short alias name cannot be `-`");
- self.short_aliases.push((s, false));
- }
- self
- }
-
- /// Add an alias, which functions as a visible long flag.
- ///
- /// Like [`Arg::alias`], except that they are visible inside the help message.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .visible_alias("something-awesome")
- /// .long("test")
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "--something-awesome", "coffee"
- /// ]);
- /// assert_eq!(m.get_one::<String>("test").unwrap(), "coffee");
- /// ```
- /// [`Command::alias`]: Arg::alias()
- #[must_use]
- pub fn visible_alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.aliases.push((name, true));
- } else {
- self.aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as a visible short flag.
- ///
- /// Like [`Arg::short_alias`], except that they are visible inside the help message.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .long("test")
- /// .visible_short_alias('t')
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "-t", "coffee"
- /// ]);
- /// assert_eq!(m.get_one::<String>("test").unwrap(), "coffee");
- /// ```
- #[must_use]
- pub fn visible_short_alias(mut self, name: impl IntoResettable<char>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- debug_assert!(name != '-', "short alias name cannot be `-`");
- self.short_aliases.push((name, true));
- } else {
- self.short_aliases.clear();
- }
- self
- }
-
- /// Add aliases, which function as visible long flags.
- ///
- /// Like [`Arg::aliases`], except that they are visible inside the help message.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .long("test")
- /// .action(ArgAction::SetTrue)
- /// .visible_aliases(["something", "awesome", "cool"]))
- /// .get_matches_from(vec![
- /// "prog", "--awesome"
- /// ]);
- /// assert_eq!(m.get_flag("test"), true);
- /// ```
- /// [`Command::aliases`]: Arg::aliases()
- #[must_use]
- pub fn visible_aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.aliases
- .extend(names.into_iter().map(|n| (n.into(), true)));
- self
- }
-
- /// Add aliases, which function as visible short flags.
- ///
- /// Like [`Arg::short_aliases`], except that they are visible inside the help message.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("test")
- /// .long("test")
- /// .action(ArgAction::SetTrue)
- /// .visible_short_aliases(['t', 'e']))
- /// .get_matches_from(vec![
- /// "prog", "-t"
- /// ]);
- /// assert_eq!(m.get_flag("test"), true);
- /// ```
- #[must_use]
- pub fn visible_short_aliases(mut self, names: impl IntoIterator<Item = char>) -> Self {
- for n in names {
- debug_assert!(n != '-', "short alias name cannot be `-`");
- self.short_aliases.push((n, true));
- }
- self
- }
-
- /// Specifies the index of a positional argument **starting at** 1.
- ///
- /// **NOTE:** The index refers to position according to **other positional argument**. It does
- /// not define position in the argument list as a whole.
- ///
- /// **NOTE:** You can optionally leave off the `index` method, and the index will be
- /// assigned in order of evaluation. Utilizing the `index` method allows for setting
- /// indexes out of order
- ///
- /// **NOTE:** This is only meant to be used for positional arguments and shouldn't to be used
- /// with [`Arg::short`] or [`Arg::long`].
- ///
- /// **NOTE:** When utilized with [`Arg::num_args(1..)`], only the **last** positional argument
- /// may be defined as having a variable number of arguments (i.e. with the highest index)
- ///
- /// # Panics
- ///
- /// [`Command`] will [`panic!`] if indexes are skipped (such as defining `index(1)` and `index(3)`
- /// but not `index(2)`, or a positional argument is defined as multiple and is not the highest
- /// index
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Arg::new("config")
- /// .index(1)
- /// # ;
- /// ```
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("mode")
- /// .index(1))
- /// .arg(Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .get_matches_from(vec![
- /// "prog", "--debug", "fast"
- /// ]);
- ///
- /// assert!(m.contains_id("mode"));
- /// assert_eq!(m.get_one::<String>("mode").unwrap(), "fast"); // notice index(1) means "first positional"
- /// // *not* first argument
- /// ```
- /// [`Arg::short`]: Arg::short()
- /// [`Arg::long`]: Arg::long()
- /// [`Arg::num_args(true)`]: Arg::num_args()
- /// [`Command`]: crate::Command
- #[inline]
- #[must_use]
- pub fn index(mut self, idx: impl IntoResettable<usize>) -> Self {
- self.index = idx.into_resettable().into_option();
- self
- }
-
- /// This is a "VarArg" and everything that follows should be captured by it, as if the user had
- /// used a `--`.
- ///
- /// **NOTE:** To start the trailing "VarArg" on unknown flags (and not just a positional
- /// value), set [`allow_hyphen_values`][Arg::allow_hyphen_values]. Either way, users still
- /// have the option to explicitly escape ambiguous arguments with `--`.
- ///
- /// **NOTE:** [`Arg::value_delimiter`] still applies if set.
- ///
- /// **NOTE:** Setting this requires [`Arg::num_args(..)`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, arg};
- /// let m = Command::new("myprog")
- /// .arg(arg!(<cmd> ... "commands to run").trailing_var_arg(true))
- /// .get_matches_from(vec!["myprog", "arg1", "-r", "val1"]);
- ///
- /// let trail: Vec<_> = m.get_many::<String>("cmd").unwrap().collect();
- /// assert_eq!(trail, ["arg1", "-r", "val1"]);
- /// ```
- /// [`Arg::num_args(..)`]: crate::Arg::num_args()
- pub fn trailing_var_arg(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::TrailingVarArg)
- } else {
- self.unset_setting(ArgSettings::TrailingVarArg)
- }
- }
-
- /// This arg is the last, or final, positional argument (i.e. has the highest
- /// index) and is *only* able to be accessed via the `--` syntax (i.e. `$ prog args --
- /// last_arg`).
- ///
- /// Even, if no other arguments are left to parse, if the user omits the `--` syntax
- /// they will receive an [`UnknownArgument`] error. Setting an argument to `.last(true)` also
- /// allows one to access this arg early using the `--` syntax. Accessing an arg early, even with
- /// the `--` syntax is otherwise not possible.
- ///
- /// **NOTE:** This will change the usage string to look like `$ prog [OPTIONS] [-- <ARG>]` if
- /// `ARG` is marked as `.last(true)`.
- ///
- /// **NOTE:** This setting will imply [`crate::Command::dont_collapse_args_in_usage`] because failing
- /// to set this can make the usage string very confusing.
- ///
- /// **NOTE**: This setting only applies to positional arguments, and has no effect on OPTIONS
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// **CAUTION:** Using this setting *and* having child subcommands is not
- /// recommended with the exception of *also* using
- /// [`crate::Command::args_conflicts_with_subcommands`]
- /// (or [`crate::Command::subcommand_negates_reqs`] if the argument marked `Last` is also
- /// marked [`Arg::required`])
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Arg, ArgAction};
- /// Arg::new("args")
- /// .action(ArgAction::Set)
- /// .last(true)
- /// # ;
- /// ```
- ///
- /// Setting `last` ensures the arg has the highest [index] of all positional args
- /// and requires that the `--` syntax be used to access it early.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("first"))
- /// .arg(Arg::new("second"))
- /// .arg(Arg::new("third")
- /// .action(ArgAction::Set)
- /// .last(true))
- /// .try_get_matches_from(vec![
- /// "prog", "one", "--", "three"
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// let m = res.unwrap();
- /// assert_eq!(m.get_one::<String>("third").unwrap(), "three");
- /// assert_eq!(m.get_one::<String>("second"), None);
- /// ```
- ///
- /// Even if the positional argument marked `Last` is the only argument left to parse,
- /// failing to use the `--` syntax results in an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("first"))
- /// .arg(Arg::new("second"))
- /// .arg(Arg::new("third")
- /// .action(ArgAction::Set)
- /// .last(true))
- /// .try_get_matches_from(vec![
- /// "prog", "one", "two", "three"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::UnknownArgument);
- /// ```
- /// [index]: Arg::index()
- /// [`UnknownArgument`]: crate::error::ErrorKind::UnknownArgument
- #[inline]
- #[must_use]
- pub fn last(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::Last)
- } else {
- self.unset_setting(ArgSettings::Last)
- }
- }
-
- /// Specifies that the argument must be present.
- ///
- /// Required by default means it is required, when no other conflicting rules or overrides have
- /// been evaluated. Conflicting rules take precedence over being required.
- ///
- /// **Pro tip:** Flags (i.e. not positional, or arguments that take values) shouldn't be
- /// required by default. This is because if a flag were to be required, it should simply be
- /// implied. No additional information is required from user. Flags by their very nature are
- /// simply boolean on/off switches. The only time a user *should* be required to use a flag
- /// is if the operation is destructive in nature, and the user is essentially proving to you,
- /// "Yes, I know what I'm doing."
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required(true)
- /// # ;
- /// ```
- ///
- /// Setting required requires that the argument be used at runtime.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required(true)
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "file.conf",
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// ```
- ///
- /// Setting required and then *not* supplying that argument at runtime is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required(true)
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .try_get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- #[inline]
- #[must_use]
- pub fn required(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::Required)
- } else {
- self.unset_setting(ArgSettings::Required)
- }
- }
-
- /// Sets an argument that is required when this one is present
- ///
- /// i.e. when using this argument, the following argument *must* be present.
- ///
- /// **NOTE:** [Conflicting] rules and [override] rules take precedence over being required
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .requires("input")
- /// # ;
- /// ```
- ///
- /// Setting [`Arg::requires(name)`] requires that the argument be used at runtime if the
- /// defining argument is used. If the defining argument isn't used, the other argument isn't
- /// required
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires("input")
- /// .long("config"))
- /// .arg(Arg::new("input"))
- /// .try_get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(res.is_ok()); // We didn't use cfg, so input wasn't required
- /// ```
- ///
- /// Setting [`Arg::requires(name)`] and *not* supplying that argument is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires("input")
- /// .long("config"))
- /// .arg(Arg::new("input"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "file.conf"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [`Arg::requires(name)`]: Arg::requires()
- /// [Conflicting]: Arg::conflicts_with()
- /// [override]: Arg::overrides_with()
- #[must_use]
- pub fn requires(mut self, arg_id: impl IntoResettable<Id>) -> Self {
- if let Some(arg_id) = arg_id.into_resettable().into_option() {
- self.requires.push((ArgPredicate::IsPresent, arg_id));
- } else {
- self.requires.clear();
- }
- self
- }
-
- /// This argument must be passed alone; it conflicts with all other arguments.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .exclusive(true)
- /// # ;
- /// ```
- ///
- /// Setting an exclusive argument and having any other arguments present at runtime
- /// is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("exclusive")
- /// .action(ArgAction::Set)
- /// .exclusive(true)
- /// .long("exclusive"))
- /// .arg(Arg::new("debug")
- /// .long("debug"))
- /// .arg(Arg::new("input"))
- /// .try_get_matches_from(vec![
- /// "prog", "--exclusive", "file.conf", "file.txt"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::ArgumentConflict);
- /// ```
- #[inline]
- #[must_use]
- pub fn exclusive(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::Exclusive)
- } else {
- self.unset_setting(ArgSettings::Exclusive)
- }
- }
-
- /// Specifies that an argument can be matched to all child [`Subcommand`]s.
- ///
- /// **NOTE:** Global arguments *only* propagate down, **not** up (to parent commands), however
- /// their values once a user uses them will be propagated back up to parents. In effect, this
- /// means one should *define* all global arguments at the top level, however it doesn't matter
- /// where the user *uses* the global argument.
- ///
- /// # Examples
- ///
- /// Assume an application with two subcommands, and you'd like to define a
- /// `--verbose` flag that can be called on any of the subcommands and parent, but you don't
- /// want to clutter the source with three duplicate [`Arg`] definitions.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("verb")
- /// .long("verbose")
- /// .short('v')
- /// .action(ArgAction::SetTrue)
- /// .global(true))
- /// .subcommand(Command::new("test"))
- /// .subcommand(Command::new("do-stuff"))
- /// .get_matches_from(vec![
- /// "prog", "do-stuff", "--verbose"
- /// ]);
- ///
- /// assert_eq!(m.subcommand_name(), Some("do-stuff"));
- /// let sub_m = m.subcommand_matches("do-stuff").unwrap();
- /// assert_eq!(sub_m.get_flag("verb"), true);
- /// ```
- ///
- /// [`Subcommand`]: crate::Subcommand
- #[inline]
- #[must_use]
- pub fn global(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::Global)
- } else {
- self.unset_setting(ArgSettings::Global)
- }
- }
-
- #[inline]
- pub(crate) fn is_set(&self, s: ArgSettings) -> bool {
- self.settings.is_set(s)
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn setting<F>(mut self, setting: F) -> Self
- where
- F: Into<ArgFlags>,
- {
- self.settings.insert(setting.into());
- self
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn unset_setting<F>(mut self, setting: F) -> Self
- where
- F: Into<ArgFlags>,
- {
- self.settings.remove(setting.into());
- self
- }
-}
-
-/// # Value Handling
-impl Arg {
- /// Specify how to react to an argument when parsing it.
- ///
- /// [ArgAction][crate::ArgAction] controls things like
- /// - Overwriting previous values with new ones
- /// - Appending new values to all previous ones
- /// - Counting how many times a flag occurs
- ///
- /// The default action is `ArgAction::Set`
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::Append)
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd", "--flag", "value"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_many::<String>("flag").unwrap_or_default().map(|v| v.as_str()).collect::<Vec<_>>(),
- /// vec!["value"]
- /// );
- /// ```
- #[inline]
- #[must_use]
- pub fn action(mut self, action: impl IntoResettable<ArgAction>) -> Self {
- self.action = action.into_resettable().into_option();
- self
- }
-
- /// Specify the typed behavior of the argument.
- ///
- /// This allows parsing and validating a value before storing it into
- /// [`ArgMatches`][crate::ArgMatches] as the given type.
- ///
- /// Possible value parsers include:
- /// - [`value_parser!(T)`][crate::value_parser!] for auto-selecting a value parser for a given type
- /// - Or [range expressions like `0..=1`][std::ops::RangeBounds] as a shorthand for [`RangedI64ValueParser`][crate::builder::RangedI64ValueParser]
- /// - `Fn(&str) -> Result<T, E>`
- /// - `[&str]` and [`PossibleValuesParser`][crate::builder::PossibleValuesParser] for static enumerated values
- /// - [`BoolishValueParser`][crate::builder::BoolishValueParser], and [`FalseyValueParser`][crate::builder::FalseyValueParser] for alternative `bool` implementations
- /// - [`NonEmptyStringValueParser`][crate::builder::NonEmptyStringValueParser] for basic validation for strings
- /// - or any other [`TypedValueParser`][crate::builder::TypedValueParser] implementation
- ///
- /// The default value is [`ValueParser::string`][crate::builder::ValueParser::string].
- ///
- /// ```rust
- /// # use clap::ArgAction;
- /// let mut cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("color")
- /// .long("color")
- /// .value_parser(["always", "auto", "never"])
- /// .default_value("auto")
- /// )
- /// .arg(
- /// clap::Arg::new("hostname")
- /// .long("hostname")
- /// .value_parser(clap::builder::NonEmptyStringValueParser::new())
- /// .action(ArgAction::Set)
- /// .required(true)
- /// )
- /// .arg(
- /// clap::Arg::new("port")
- /// .long("port")
- /// .value_parser(clap::value_parser!(u16).range(3000..))
- /// .action(ArgAction::Set)
- /// .required(true)
- /// );
- ///
- /// let m = cmd.try_get_matches_from_mut(
- /// ["cmd", "--hostname", "rust-lang.org", "--port", "3001"]
- /// ).unwrap();
- ///
- /// let color: &String = m.get_one("color")
- /// .expect("default");
- /// assert_eq!(color, "auto");
- ///
- /// let hostname: &String = m.get_one("hostname")
- /// .expect("required");
- /// assert_eq!(hostname, "rust-lang.org");
- ///
- /// let port: u16 = *m.get_one("port")
- /// .expect("required");
- /// assert_eq!(port, 3001);
- /// ```
- pub fn value_parser(mut self, parser: impl IntoResettable<super::ValueParser>) -> Self {
- self.value_parser = parser.into_resettable().into_option();
- self
- }
-
- /// Specifies the number of arguments parsed per occurrence
- ///
- /// For example, if you had a `-f <file>` argument where you wanted exactly 3 'files' you would
- /// set `.num_args(3)`, and this argument wouldn't be satisfied unless the user
- /// provided 3 and only 3 values.
- ///
- /// Users may specify values for arguments in any of the following methods
- ///
- /// - Using a space such as `-o value` or `--option value`
- /// - Using an equals and no space such as `-o=value` or `--option=value`
- /// - Use a short and no space such as `-ovalue`
- ///
- /// **WARNING:**
- ///
- /// Setting a variable number of values (e.g. `1..=10`) for an argument without
- /// other details can be dangerous in some circumstances. Because multiple values are
- /// allowed, `--option val1 val2 val3` is perfectly valid. Be careful when designing a CLI
- /// where **positional arguments** or **subcommands** are *also* expected as `clap` will continue
- /// parsing *values* until one of the following happens:
- ///
- /// - It reaches the maximum number of values
- /// - It reaches a specific number of values
- /// - It finds another flag or option (i.e. something that starts with a `-`)
- /// - It reaches the [`Arg::value_terminator`] if set
- ///
- /// Alternatively,
- /// - Use a delimiter between values with [Arg::value_delimiter]
- /// - Require a flag occurrence per value with [`ArgAction::Append`]
- /// - Require positional arguments to appear after `--` with [`Arg::last`]
- ///
- /// # Examples
- ///
- /// Option:
- /// ```rust
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("mode")
- /// .long("mode")
- /// .num_args(1))
- /// .get_matches_from(vec![
- /// "prog", "--mode", "fast"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("mode").unwrap(), "fast");
- /// ```
- ///
- /// Flag/option hybrid (see also [default_missing_value][Arg::default_missing_value])
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let cmd = Command::new("prog")
- /// .arg(Arg::new("mode")
- /// .long("mode")
- /// .default_missing_value("slow")
- /// .default_value("plaid")
- /// .num_args(0..=1));
- ///
- /// let m = cmd.clone()
- /// .get_matches_from(vec![
- /// "prog", "--mode", "fast"
- /// ]);
- /// assert_eq!(m.get_one::<String>("mode").unwrap(), "fast");
- ///
- /// let m = cmd.clone()
- /// .get_matches_from(vec![
- /// "prog", "--mode",
- /// ]);
- /// assert_eq!(m.get_one::<String>("mode").unwrap(), "slow");
- ///
- /// let m = cmd.clone()
- /// .get_matches_from(vec![
- /// "prog",
- /// ]);
- /// assert_eq!(m.get_one::<String>("mode").unwrap(), "plaid");
- /// ```
- ///
- /// Tuples
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let cmd = Command::new("prog")
- /// .arg(Arg::new("file")
- /// .action(ArgAction::Set)
- /// .num_args(2)
- /// .short('F'));
- ///
- /// let m = cmd.clone()
- /// .get_matches_from(vec![
- /// "prog", "-F", "in-file", "out-file"
- /// ]);
- /// assert_eq!(
- /// m.get_many::<String>("file").unwrap_or_default().map(|v| v.as_str()).collect::<Vec<_>>(),
- /// vec!["in-file", "out-file"]
- /// );
- ///
- /// let res = cmd.clone()
- /// .try_get_matches_from(vec![
- /// "prog", "-F", "file1"
- /// ]);
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::WrongNumberOfValues);
- /// ```
- ///
- /// A common mistake is to define an option which allows multiple values and a positional
- /// argument.
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let cmd = Command::new("prog")
- /// .arg(Arg::new("file")
- /// .action(ArgAction::Set)
- /// .num_args(0..)
- /// .short('F'))
- /// .arg(Arg::new("word"));
- ///
- /// let m = cmd.clone().get_matches_from(vec![
- /// "prog", "-F", "file1", "file2", "file3", "word"
- /// ]);
- /// let files: Vec<_> = m.get_many::<String>("file").unwrap().collect();
- /// assert_eq!(files, ["file1", "file2", "file3", "word"]); // wait...what?!
- /// assert!(!m.contains_id("word")); // but we clearly used word!
- ///
- /// // but this works
- /// let m = cmd.clone().get_matches_from(vec![
- /// "prog", "word", "-F", "file1", "file2", "file3",
- /// ]);
- /// let files: Vec<_> = m.get_many::<String>("file").unwrap().collect();
- /// assert_eq!(files, ["file1", "file2", "file3"]);
- /// assert_eq!(m.get_one::<String>("word").unwrap(), "word");
- /// ```
- /// The problem is `clap` doesn't know when to stop parsing values for "file".
- ///
- /// A solution for the example above is to limit how many values with a maximum, or specific
- /// number, or to say [`ArgAction::Append`] is ok, but multiple values are not.
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("file")
- /// .action(ArgAction::Append)
- /// .short('F'))
- /// .arg(Arg::new("word"))
- /// .get_matches_from(vec![
- /// "prog", "-F", "file1", "-F", "file2", "-F", "file3", "word"
- /// ]);
- ///
- /// let files: Vec<_> = m.get_many::<String>("file").unwrap().collect();
- /// assert_eq!(files, ["file1", "file2", "file3"]);
- /// assert_eq!(m.get_one::<String>("word").unwrap(), "word");
- /// ```
- #[inline]
- #[must_use]
- pub fn num_args(mut self, qty: impl IntoResettable<ValueRange>) -> Self {
- self.num_vals = qty.into_resettable().into_option();
- self
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::num_args`")
- )]
- pub fn number_of_values(self, qty: usize) -> Self {
- self.num_args(qty)
- }
-
- /// Placeholder for the argument's value in the help message / usage.
- ///
- /// This name is cosmetic only; the name is **not** used to access arguments.
- /// This setting can be very helpful when describing the type of input the user should be
- /// using, such as `FILE`, `INTERFACE`, etc. Although not required, it's somewhat convention to
- /// use all capital letters for the value name.
- ///
- /// **NOTE:** implicitly sets [`Arg::action(ArgAction::Set)`]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Arg::new("cfg")
- /// .long("config")
- /// .value_name("FILE")
- /// # ;
- /// ```
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("config")
- /// .long("config")
- /// .value_name("FILE")
- /// .help("Some help text"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- /// Running the above program produces the following output
- ///
- /// ```text
- /// valnames
- ///
- /// Usage: valnames [OPTIONS]
- ///
- /// Options:
- /// --config <FILE> Some help text
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- /// [positional]: Arg::index()
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- #[inline]
- #[must_use]
- pub fn value_name(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.value_names([name])
- } else {
- self.val_names.clear();
- self
- }
- }
-
- /// Placeholders for the argument's values in the help message / usage.
- ///
- /// These names are cosmetic only, used for help and usage strings only. The names are **not**
- /// used to access arguments. The values of the arguments are accessed in numeric order (i.e.
- /// if you specify two names `one` and `two` `one` will be the first matched value, `two` will
- /// be the second).
- ///
- /// This setting can be very helpful when describing the type of input the user should be
- /// using, such as `FILE`, `INTERFACE`, etc. Although not required, it's somewhat convention to
- /// use all capital letters for the value name.
- ///
- /// **Pro Tip:** It may help to use [`Arg::next_line_help(true)`] if there are long, or
- /// multiple value names in order to not throw off the help text alignment of all options.
- ///
- /// **NOTE:** implicitly sets [`Arg::action(ArgAction::Set)`] and [`Arg::num_args(1..)`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Arg::new("speed")
- /// .short('s')
- /// .value_names(["fast", "slow"]);
- /// ```
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("io")
- /// .long("io-files")
- /// .value_names(["INFILE", "OUTFILE"]))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// Running the above program produces the following output
- ///
- /// ```text
- /// valnames
- ///
- /// Usage: valnames [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// --io-files <INFILE> <OUTFILE> Some help text
- /// -V, --version Print version information
- /// ```
- /// [`Arg::next_line_help(true)`]: Arg::next_line_help()
- /// [`Arg::num_args`]: Arg::num_args()
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::num_args(1..)`]: Arg::num_args()
- #[must_use]
- pub fn value_names(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.val_names = names.into_iter().map(|s| s.into()).collect();
- self
- }
-
- /// Provide the shell a hint about how to complete this argument.
- ///
- /// See [`ValueHint`][crate::ValueHint] for more information.
- ///
- /// **NOTE:** implicitly sets [`Arg::action(ArgAction::Set)`].
- ///
- /// For example, to take a username as argument:
- ///
- /// ```
- /// # use clap::{Arg, ValueHint};
- /// Arg::new("user")
- /// .short('u')
- /// .long("user")
- /// .value_hint(ValueHint::Username);
- /// ```
- ///
- /// To take a full command line and its arguments (for example, when writing a command wrapper):
- ///
- /// ```
- /// # use clap::{Command, Arg, ValueHint, ArgAction};
- /// Command::new("prog")
- /// .trailing_var_arg(true)
- /// .arg(
- /// Arg::new("command")
- /// .action(ArgAction::Set)
- /// .num_args(1..)
- /// .value_hint(ValueHint::CommandWithArguments)
- /// );
- /// ```
- #[must_use]
- pub fn value_hint(mut self, value_hint: impl IntoResettable<ValueHint>) -> Self {
- self.value_hint = value_hint.into_resettable().into_option();
- self
- }
-
- /// Match values against [`PossibleValuesParser`][crate::builder::PossibleValuesParser] without matching case.
- ///
- /// When other arguments are conditionally required based on the
- /// value of a case-insensitive argument, the equality check done
- /// by [`Arg::required_if_eq`], [`Arg::required_if_eq_any`], or
- /// [`Arg::required_if_eq_all`] is case-insensitive.
- ///
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// **NOTE:** To do unicode case folding, enable the `unicode` feature flag.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("pv")
- /// .arg(Arg::new("option")
- /// .long("option")
- /// .action(ArgAction::Set)
- /// .ignore_case(true)
- /// .value_parser(["test123"]))
- /// .get_matches_from(vec![
- /// "pv", "--option", "TeSt123",
- /// ]);
- ///
- /// assert!(m.get_one::<String>("option").unwrap().eq_ignore_ascii_case("test123"));
- /// ```
- ///
- /// This setting also works when multiple values can be defined:
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("pv")
- /// .arg(Arg::new("option")
- /// .short('o')
- /// .long("option")
- /// .action(ArgAction::Set)
- /// .ignore_case(true)
- /// .num_args(1..)
- /// .value_parser(["test123", "test321"]))
- /// .get_matches_from(vec![
- /// "pv", "--option", "TeSt123", "teST123", "tESt321"
- /// ]);
- ///
- /// let matched_vals = m.get_many::<String>("option").unwrap().collect::<Vec<_>>();
- /// assert_eq!(&*matched_vals, &["TeSt123", "teST123", "tESt321"]);
- /// ```
- #[inline]
- #[must_use]
- pub fn ignore_case(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::IgnoreCase)
- } else {
- self.unset_setting(ArgSettings::IgnoreCase)
- }
- }
-
- /// Allows values which start with a leading hyphen (`-`)
- ///
- /// To limit values to just numbers, see
- /// [`allow_negative_numbers`][Arg::allow_negative_numbers].
- ///
- /// See also [`trailing_var_arg`][Arg::trailing_var_arg].
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// **WARNING:** Prior arguments with `allow_hyphen_values(true)` get precedence over known
- /// flags but known flags get precedence over the next possible positional argument with
- /// `allow_hyphen_values(true)`. When combined with [`Arg::num_args(..)`],
- /// [`Arg::value_terminator`] is one way to ensure processing stops.
- ///
- /// **WARNING**: Take caution when using this setting combined with another argument using
- /// [`Arg::num_args`], as this becomes ambiguous `$ prog --arg -- -- val`. All
- /// three `--, --, val` will be values when the user may have thought the second `--` would
- /// constitute the normal, "Only positional args follow" idiom.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("pat")
- /// .action(ArgAction::Set)
- /// .allow_hyphen_values(true)
- /// .long("pattern"))
- /// .get_matches_from(vec![
- /// "prog", "--pattern", "-file"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("pat").unwrap(), "-file");
- /// ```
- ///
- /// Not setting `Arg::allow_hyphen_values(true)` and supplying a value which starts with a
- /// hyphen is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("pat")
- /// .action(ArgAction::Set)
- /// .long("pattern"))
- /// .try_get_matches_from(vec![
- /// "prog", "--pattern", "-file"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::UnknownArgument);
- /// ```
- /// [`Arg::num_args(1)`]: Arg::num_args()
- #[inline]
- #[must_use]
- pub fn allow_hyphen_values(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::AllowHyphenValues)
- } else {
- self.unset_setting(ArgSettings::AllowHyphenValues)
- }
- }
-
- /// Allows negative numbers to pass as values.
- ///
- /// This is similar to [`Arg::allow_hyphen_values`] except that it only allows numbers,
- /// all other undefined leading hyphens will fail to parse.
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// let res = Command::new("myprog")
- /// .arg(Arg::new("num").allow_negative_numbers(true))
- /// .try_get_matches_from(vec![
- /// "myprog", "-20"
- /// ]);
- /// assert!(res.is_ok());
- /// let m = res.unwrap();
- /// assert_eq!(m.get_one::<String>("num").unwrap(), "-20");
- /// ```
- #[inline]
- pub fn allow_negative_numbers(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::AllowNegativeNumbers)
- } else {
- self.unset_setting(ArgSettings::AllowNegativeNumbers)
- }
- }
-
- /// Requires that options use the `--option=val` syntax
- ///
- /// i.e. an equals between the option and associated value.
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// # Examples
- ///
- /// Setting `require_equals` requires that the option have an equals sign between
- /// it and the associated value.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .require_equals(true)
- /// .long("config"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config=file.conf"
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// ```
- ///
- /// Setting `require_equals` and *not* supplying the equals will cause an
- /// error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .require_equals(true)
- /// .long("config"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "file.conf"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::NoEquals);
- /// ```
- #[inline]
- #[must_use]
- pub fn require_equals(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::RequireEquals)
- } else {
- self.unset_setting(ArgSettings::RequireEquals)
- }
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::value_delimiter`")
- )]
- pub fn use_value_delimiter(mut self, yes: bool) -> Self {
- if yes {
- self.val_delim.get_or_insert(',');
- } else {
- self.val_delim = None;
- }
- self
- }
-
- /// Allow grouping of multiple values via a delimiter.
- ///
- /// i.e. should `--option=val1,val2,val3` be parsed as three values (`val1`, `val2`,
- /// and `val3`) or as a single value (`val1,val2,val3`). Defaults to using `,` (comma) as the
- /// value delimiter for all arguments that accept values (options and positional arguments)
- ///
- /// **NOTE:** implicitly sets [`Arg::action(ArgAction::Set)`]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("config")
- /// .short('c')
- /// .long("config")
- /// .value_delimiter(','))
- /// .get_matches_from(vec![
- /// "prog", "--config=val1,val2,val3"
- /// ]);
- ///
- /// assert_eq!(m.get_many::<String>("config").unwrap().collect::<Vec<_>>(), ["val1", "val2", "val3"])
- /// ```
- /// [`Arg::value_delimiter(',')`]: Arg::value_delimiter()
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- #[inline]
- #[must_use]
- pub fn value_delimiter(mut self, d: impl IntoResettable<char>) -> Self {
- self.val_delim = d.into_resettable().into_option();
- self
- }
-
- /// Sentinel to **stop** parsing multiple values of a given argument.
- ///
- /// By default when
- /// one sets [`num_args(1..)`] on an argument, clap will continue parsing values for that
- /// argument until it reaches another valid argument, or one of the other more specific settings
- /// for multiple values is used (such as [`num_args`]).
- ///
- /// **NOTE:** This setting only applies to [options] and [positional arguments]
- ///
- /// **NOTE:** When the terminator is passed in on the command line, it is **not** stored as one
- /// of the values
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// Arg::new("vals")
- /// .action(ArgAction::Set)
- /// .num_args(1..)
- /// .value_terminator(";")
- /// # ;
- /// ```
- ///
- /// The following example uses two arguments, a sequence of commands, and the location in which
- /// to perform them
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cmds")
- /// .action(ArgAction::Set)
- /// .num_args(1..)
- /// .allow_hyphen_values(true)
- /// .value_terminator(";"))
- /// .arg(Arg::new("location"))
- /// .get_matches_from(vec![
- /// "prog", "find", "-type", "f", "-name", "special", ";", "/home/clap"
- /// ]);
- /// let cmds: Vec<_> = m.get_many::<String>("cmds").unwrap().collect();
- /// assert_eq!(&cmds, &["find", "-type", "f", "-name", "special"]);
- /// assert_eq!(m.get_one::<String>("location").unwrap(), "/home/clap");
- /// ```
- /// [options]: Arg::action
- /// [positional arguments]: Arg::index()
- /// [`num_args(1..)`]: Arg::num_args()
- /// [`num_args`]: Arg::num_args()
- #[inline]
- #[must_use]
- pub fn value_terminator(mut self, term: impl IntoResettable<Str>) -> Self {
- self.terminator = term.into_resettable().into_option();
- self
- }
-
- /// Consume all following arguments.
- ///
- /// Do not be parse them individually, but rather pass them in entirety.
- ///
- /// It is worth noting that setting this requires all values to come after a `--` to indicate
- /// they should all be captured. For example:
- ///
- /// ```text
- /// --foo something -- -v -v -v -b -b -b --baz -q -u -x
- /// ```
- ///
- /// Will result in everything after `--` to be considered one raw argument. This behavior
- /// may not be exactly what you are expecting and using [`crate::Command::trailing_var_arg`]
- /// may be more appropriate.
- ///
- /// **NOTE:** Implicitly sets [`Arg::action(ArgAction::Set)`] [`Arg::num_args(1..)`],
- /// [`Arg::allow_hyphen_values(true)`], and [`Arg::last(true)`] when set to `true`.
- ///
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::num_args(1..)`]: Arg::num_args()
- /// [`Arg::allow_hyphen_values(true)`]: Arg::allow_hyphen_values()
- /// [`Arg::last(true)`]: Arg::last()
- #[inline]
- #[must_use]
- pub fn raw(mut self, yes: bool) -> Self {
- if yes {
- self.num_vals.get_or_insert_with(|| (1..).into());
- }
- self.allow_hyphen_values(yes).last(yes)
- }
-
- /// Value for the argument when not present.
- ///
- /// **NOTE:** If the user *does not* use this argument at runtime [`ArgMatches::contains_id`] will
- /// still return `true`. If you wish to determine whether the argument was used at runtime or
- /// not, consider [`ArgMatches::value_source`][crate::ArgMatches::value_source].
- ///
- /// **NOTE:** This setting is perfectly compatible with [`Arg::default_value_if`] but slightly
- /// different. `Arg::default_value` *only* takes effect when the user has not provided this arg
- /// at runtime. `Arg::default_value_if` however only takes effect when the user has not provided
- /// a value at runtime **and** these other conditions are met as well. If you have set
- /// `Arg::default_value` and `Arg::default_value_if`, and the user **did not** provide this arg
- /// at runtime, nor were the conditions met for `Arg::default_value_if`, the `Arg::default_value`
- /// will be applied.
- ///
- /// **NOTE:** This implicitly sets [`Arg::action(ArgAction::Set)`].
- ///
- /// # Examples
- ///
- /// First we use the default value without providing any value at runtime.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, parser::ValueSource};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("opt")
- /// .long("myopt")
- /// .default_value("myval"))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("opt").unwrap(), "myval");
- /// assert!(m.contains_id("opt"));
- /// assert_eq!(m.value_source("opt"), Some(ValueSource::DefaultValue));
- /// ```
- ///
- /// Next we provide a value at runtime to override the default.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, parser::ValueSource};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("opt")
- /// .long("myopt")
- /// .default_value("myval"))
- /// .get_matches_from(vec![
- /// "prog", "--myopt=non_default"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("opt").unwrap(), "non_default");
- /// assert!(m.contains_id("opt"));
- /// assert_eq!(m.value_source("opt"), Some(ValueSource::CommandLine));
- /// ```
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`ArgMatches::contains_id`]: crate::ArgMatches::contains_id()
- /// [`Arg::default_value_if`]: Arg::default_value_if()
- #[inline]
- #[must_use]
- pub fn default_value(mut self, val: impl IntoResettable<OsStr>) -> Self {
- if let Some(val) = val.into_resettable().into_option() {
- self.default_values([val])
- } else {
- self.default_vals.clear();
- self
- }
- }
-
- #[inline]
- #[must_use]
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::default_value`")
- )]
- pub fn default_value_os(self, val: impl Into<OsStr>) -> Self {
- self.default_values([val])
- }
-
- /// Value for the argument when not present.
- ///
- /// See [`Arg::default_value`].
- ///
- /// [`Arg::default_value`]: Arg::default_value()
- #[inline]
- #[must_use]
- pub fn default_values(mut self, vals: impl IntoIterator<Item = impl Into<OsStr>>) -> Self {
- self.default_vals = vals.into_iter().map(|s| s.into()).collect();
- self
- }
-
- #[inline]
- #[must_use]
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::default_values`")
- )]
- pub fn default_values_os(self, vals: impl IntoIterator<Item = impl Into<OsStr>>) -> Self {
- self.default_values(vals)
- }
-
- /// Value for the argument when the flag is present but no value is specified.
- ///
- /// This configuration option is often used to give the user a shortcut and allow them to
- /// efficiently specify an option argument without requiring an explicitly value. The `--color`
- /// argument is a common example. By, supplying an default, such as `default_missing_value("always")`,
- /// the user can quickly just add `--color` to the command line to produce the desired color output.
- ///
- /// **NOTE:** using this configuration option requires the use of the
- /// [`.num_args(0..N)`][Arg::num_args] and the
- /// [`.require_equals(true)`][Arg::require_equals] configuration option. These are required in
- /// order to unambiguously determine what, if any, value was supplied for the argument.
- ///
- /// # Examples
- ///
- /// For POSIX style `--color`:
- /// ```rust
- /// # use clap::{Command, Arg, parser::ValueSource};
- /// fn cli() -> Command {
- /// Command::new("prog")
- /// .arg(Arg::new("color").long("color")
- /// .value_name("WHEN")
- /// .value_parser(["always", "auto", "never"])
- /// .default_value("auto")
- /// .num_args(0..=1)
- /// .require_equals(true)
- /// .default_missing_value("always")
- /// .help("Specify WHEN to colorize output.")
- /// )
- /// }
- ///
- /// // first, we'll provide no arguments
- /// let m = cli().get_matches_from(vec![
- /// "prog"
- /// ]);
- /// assert_eq!(m.get_one::<String>("color").unwrap(), "auto");
- /// assert_eq!(m.value_source("color"), Some(ValueSource::DefaultValue));
- ///
- /// // next, we'll provide a runtime value to override the default (as usually done).
- /// let m = cli().get_matches_from(vec![
- /// "prog", "--color=never"
- /// ]);
- /// assert_eq!(m.get_one::<String>("color").unwrap(), "never");
- /// assert_eq!(m.value_source("color"), Some(ValueSource::CommandLine));
- ///
- /// // finally, we will use the shortcut and only provide the argument without a value.
- /// let m = cli().get_matches_from(vec![
- /// "prog", "--color"
- /// ]);
- /// assert_eq!(m.get_one::<String>("color").unwrap(), "always");
- /// assert_eq!(m.value_source("color"), Some(ValueSource::CommandLine));
- /// ```
- ///
- /// For bool literals:
- /// ```rust
- /// # use clap::{Command, Arg, parser::ValueSource, value_parser};
- /// fn cli() -> Command {
- /// Command::new("prog")
- /// .arg(Arg::new("create").long("create")
- /// .value_name("BOOL")
- /// .value_parser(value_parser!(bool))
- /// .num_args(0..=1)
- /// .require_equals(true)
- /// .default_missing_value("true")
- /// )
- /// }
- ///
- /// // first, we'll provide no arguments
- /// let m = cli().get_matches_from(vec![
- /// "prog"
- /// ]);
- /// assert_eq!(m.get_one::<bool>("create").copied(), None);
- ///
- /// // next, we'll provide a runtime value to override the default (as usually done).
- /// let m = cli().get_matches_from(vec![
- /// "prog", "--create=false"
- /// ]);
- /// assert_eq!(m.get_one::<bool>("create").copied(), Some(false));
- /// assert_eq!(m.value_source("create"), Some(ValueSource::CommandLine));
- ///
- /// // finally, we will use the shortcut and only provide the argument without a value.
- /// let m = cli().get_matches_from(vec![
- /// "prog", "--create"
- /// ]);
- /// assert_eq!(m.get_one::<bool>("create").copied(), Some(true));
- /// assert_eq!(m.value_source("create"), Some(ValueSource::CommandLine));
- /// ```
- ///
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::default_value`]: Arg::default_value()
- #[inline]
- #[must_use]
- pub fn default_missing_value(mut self, val: impl IntoResettable<OsStr>) -> Self {
- if let Some(val) = val.into_resettable().into_option() {
- self.default_missing_values_os([val])
- } else {
- self.default_missing_vals.clear();
- self
- }
- }
-
- /// Value for the argument when the flag is present but no value is specified.
- ///
- /// See [`Arg::default_missing_value`].
- ///
- /// [`Arg::default_missing_value`]: Arg::default_missing_value()
- /// [`OsStr`]: std::ffi::OsStr
- #[inline]
- #[must_use]
- pub fn default_missing_value_os(self, val: impl Into<OsStr>) -> Self {
- self.default_missing_values_os([val])
- }
-
- /// Value for the argument when the flag is present but no value is specified.
- ///
- /// See [`Arg::default_missing_value`].
- ///
- /// [`Arg::default_missing_value`]: Arg::default_missing_value()
- #[inline]
- #[must_use]
- pub fn default_missing_values(self, vals: impl IntoIterator<Item = impl Into<OsStr>>) -> Self {
- self.default_missing_values_os(vals)
- }
-
- /// Value for the argument when the flag is present but no value is specified.
- ///
- /// See [`Arg::default_missing_values`].
- ///
- /// [`Arg::default_missing_values`]: Arg::default_missing_values()
- /// [`OsStr`]: std::ffi::OsStr
- #[inline]
- #[must_use]
- pub fn default_missing_values_os(
- mut self,
- vals: impl IntoIterator<Item = impl Into<OsStr>>,
- ) -> Self {
- self.default_missing_vals = vals.into_iter().map(|s| s.into()).collect();
- self
- }
-
- /// Read from `name` environment variable when argument is not present.
- ///
- /// If it is not present in the environment, then default
- /// rules will apply.
- ///
- /// If user sets the argument in the environment:
- /// - When [`Arg::action(ArgAction::Set)`] is not set, the flag is considered raised.
- /// - When [`Arg::action(ArgAction::Set)`] is set,
- /// [`ArgMatches::get_one`][crate::ArgMatches::get_one] will
- /// return value of the environment variable.
- ///
- /// If user doesn't set the argument in the environment:
- /// - When [`Arg::action(ArgAction::Set)`] is not set, the flag is considered off.
- /// - When [`Arg::action(ArgAction::Set)`] is set,
- /// [`ArgMatches::get_one`][crate::ArgMatches::get_one] will
- /// return the default specified.
- ///
- /// # Examples
- ///
- /// In this example, we show the variable coming from the environment:
- ///
- /// ```rust
- /// # use std::env;
- /// # use clap::{Command, Arg, ArgAction};
- ///
- /// env::set_var("MY_FLAG", "env");
- ///
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .env("MY_FLAG")
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("flag").unwrap(), "env");
- /// ```
- ///
- /// In this example, because `prog` is a flag that accepts an optional, case-insensitive
- /// boolean literal.
- ///
- /// Note that the value parser controls how flags are parsed. In this case we've selected
- /// [`FalseyValueParser`][crate::builder::FalseyValueParser]. A `false` literal is `n`, `no`,
- /// `f`, `false`, `off` or `0`. An absent environment variable will also be considered as
- /// `false`. Anything else will considered as `true`.
- ///
- /// ```rust
- /// # use std::env;
- /// # use clap::{Command, Arg, ArgAction};
- /// # use clap::builder::FalseyValueParser;
- ///
- /// env::set_var("TRUE_FLAG", "true");
- /// env::set_var("FALSE_FLAG", "0");
- ///
- /// let m = Command::new("prog")
- /// .arg(Arg::new("true_flag")
- /// .long("true_flag")
- /// .action(ArgAction::SetTrue)
- /// .value_parser(FalseyValueParser::new())
- /// .env("TRUE_FLAG"))
- /// .arg(Arg::new("false_flag")
- /// .long("false_flag")
- /// .action(ArgAction::SetTrue)
- /// .value_parser(FalseyValueParser::new())
- /// .env("FALSE_FLAG"))
- /// .arg(Arg::new("absent_flag")
- /// .long("absent_flag")
- /// .action(ArgAction::SetTrue)
- /// .value_parser(FalseyValueParser::new())
- /// .env("ABSENT_FLAG"))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(m.get_flag("true_flag"));
- /// assert!(!m.get_flag("false_flag"));
- /// assert!(!m.get_flag("absent_flag"));
- /// ```
- ///
- /// In this example, we show the variable coming from an option on the CLI:
- ///
- /// ```rust
- /// # use std::env;
- /// # use clap::{Command, Arg, ArgAction};
- ///
- /// env::set_var("MY_FLAG", "env");
- ///
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .env("MY_FLAG")
- /// .action(ArgAction::Set))
- /// .get_matches_from(vec![
- /// "prog", "--flag", "opt"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("flag").unwrap(), "opt");
- /// ```
- ///
- /// In this example, we show the variable coming from the environment even with the
- /// presence of a default:
- ///
- /// ```rust
- /// # use std::env;
- /// # use clap::{Command, Arg, ArgAction};
- ///
- /// env::set_var("MY_FLAG", "env");
- ///
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .env("MY_FLAG")
- /// .action(ArgAction::Set)
- /// .default_value("default"))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("flag").unwrap(), "env");
- /// ```
- ///
- /// In this example, we show the use of multiple values in a single environment variable:
- ///
- /// ```rust
- /// # use std::env;
- /// # use clap::{Command, Arg, ArgAction};
- ///
- /// env::set_var("MY_FLAG_MULTI", "env1,env2");
- ///
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .env("MY_FLAG_MULTI")
- /// .action(ArgAction::Set)
- /// .num_args(1..)
- /// .value_delimiter(','))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_many::<String>("flag").unwrap().collect::<Vec<_>>(), vec!["env1", "env2"]);
- /// ```
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::value_delimiter(',')`]: Arg::value_delimiter()
- #[cfg(feature = "env")]
- #[inline]
- #[must_use]
- pub fn env(mut self, name: impl IntoResettable<OsStr>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- let value = env::var_os(&name);
- self.env = Some((name, value));
- } else {
- self.env = None;
- }
- self
- }
-
- #[cfg(feature = "env")]
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::env`")
- )]
- pub fn env_os(self, name: impl Into<OsStr>) -> Self {
- self.env(name)
- }
-}
-
-/// # Help
-impl Arg {
- /// Sets the description of the argument for short help (`-h`).
- ///
- /// Typically, this is a short (one line) description of the arg.
- ///
- /// If [`Arg::long_help`] is not specified, this message will be displayed for `--help`.
- ///
- /// **NOTE:** Only `Arg::help` is used in completion script generation in order to be concise
- ///
- /// # Examples
- ///
- /// Any valid UTF-8 is allowed in the help text. The one exception is when one wishes to
- /// include a newline in the help text and have the following text be properly aligned with all
- /// the other help text.
- ///
- /// Setting `help` displays a short message to the side of the argument when the user passes
- /// `-h` or `--help` (by default).
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays
- ///
- /// ```notrust
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// Options:
- /// --config Some help text describing the --config arg
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- /// [`Arg::long_help`]: Arg::long_help()
- #[inline]
- #[must_use]
- pub fn help(mut self, h: impl IntoResettable<StyledStr>) -> Self {
- self.help = h.into_resettable().into_option();
- self
- }
-
- /// Sets the description of the argument for long help (`--help`).
- ///
- /// Typically this a more detailed (multi-line) message
- /// that describes the arg.
- ///
- /// If [`Arg::help`] is not specified, this message will be displayed for `-h`.
- ///
- /// **NOTE:** Only [`Arg::help`] is used in completion script generation in order to be concise
- ///
- /// # Examples
- ///
- /// Any valid UTF-8 is allowed in the help text. The one exception is when one wishes to
- /// include a newline in the help text and have the following text be properly aligned with all
- /// the other help text.
- ///
- /// Setting `help` displays a short message to the side of the argument when the user passes
- /// `-h` or `--help` (by default).
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .long_help(
- /// "The config file used by the myprog must be in JSON format
- /// with only valid keys and may not contain other nonsense
- /// that cannot be read by this program. Obviously I'm going on
- /// and on, so I'll stop now."))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays
- ///
- /// ```text
- /// prog
- ///
- /// Usage: prog [OPTIONS]
- ///
- /// Options:
- /// --config
- /// The config file used by the myprog must be in JSON format
- /// with only valid keys and may not contain other nonsense
- /// that cannot be read by this program. Obviously I'm going on
- /// and on, so I'll stop now.
- ///
- /// -h, --help
- /// Print help information
- ///
- /// -V, --version
- /// Print version information
- /// ```
- /// [`Arg::help`]: Arg::help()
- #[inline]
- #[must_use]
- pub fn long_help(mut self, h: impl IntoResettable<StyledStr>) -> Self {
- self.long_help = h.into_resettable().into_option();
- self
- }
-
- /// Allows custom ordering of args within the help message.
- ///
- /// Args with a lower value will be displayed first in the help message. This is helpful when
- /// one would like to emphasise frequently used args, or prioritize those towards the top of
- /// the list. Args with duplicate display orders will be displayed in alphabetical order.
- ///
- /// **NOTE:** The default is 999 for all arguments.
- ///
- /// **NOTE:** This setting is ignored for [positional arguments] which are always displayed in
- /// [index] order.
- ///
- /// # Examples
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("a") // Typically args are grouped alphabetically by name.
- /// // Args without a display_order have a value of 999 and are
- /// // displayed alphabetically with all other 999 valued args.
- /// .long("long-option")
- /// .short('o')
- /// .action(ArgAction::Set)
- /// .help("Some help and text"))
- /// .arg(Arg::new("b")
- /// .long("other-option")
- /// .short('O')
- /// .action(ArgAction::Set)
- /// .display_order(1) // In order to force this arg to appear *first*
- /// // all we have to do is give it a value lower than 999.
- /// // Any other args with a value of 1 will be displayed
- /// // alphabetically with this one...then 2 values, then 3, etc.
- /// .help("I should be first!"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays the following help message
- ///
- /// ```text
- /// cust-ord
- ///
- /// Usage: cust-ord [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// -O, --other-option <b> I should be first!
- /// -o, --long-option <a> Some help and text
- /// ```
- /// [positional arguments]: Arg::index()
- /// [index]: Arg::index()
- #[inline]
- #[must_use]
- pub fn display_order(mut self, ord: impl IntoResettable<usize>) -> Self {
- self.disp_ord = ord.into_resettable().into_option();
- self
- }
-
- /// Override the [current] help section.
- ///
- /// [current]: crate::Command::next_help_heading
- #[inline]
- #[must_use]
- pub fn help_heading(mut self, heading: impl IntoResettable<Str>) -> Self {
- self.help_heading = Some(heading.into_resettable().into_option());
- self
- }
-
- /// Render the [help][Arg::help] on the line after the argument.
- ///
- /// This can be helpful for arguments with very long or complex help messages.
- /// This can also be helpful for arguments with very long flag names, or many/long value names.
- ///
- /// **NOTE:** To apply this setting to all arguments and subcommands, consider using
- /// [`crate::Command::next_line_help`]
- ///
- /// # Examples
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("opt")
- /// .long("long-option-flag")
- /// .short('o')
- /// .action(ArgAction::Set)
- /// .next_line_help(true)
- /// .value_names(["value1", "value2"])
- /// .help("Some really long help and complex\n\
- /// help that makes more sense to be\n\
- /// on a line after the option"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays the following help message
- ///
- /// ```text
- /// nlh
- ///
- /// Usage: nlh [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// -o, --long-option-flag <value1> <value2>
- /// Some really long help and complex
- /// help that makes more sense to be
- /// on a line after the option
- /// ```
- #[inline]
- #[must_use]
- pub fn next_line_help(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::NextLineHelp)
- } else {
- self.unset_setting(ArgSettings::NextLineHelp)
- }
- }
-
- /// Do not display the argument in help message.
- ///
- /// **NOTE:** This does **not** hide the argument from usage strings on error
- ///
- /// # Examples
- ///
- /// Setting `Hidden` will hide the argument when displaying help text
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .hide(true)
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays
- ///
- /// ```text
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- #[inline]
- #[must_use]
- pub fn hide(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::Hidden)
- } else {
- self.unset_setting(ArgSettings::Hidden)
- }
- }
-
- /// Do not display the [possible values][crate::builder::ValueParser::possible_values] in the help message.
- ///
- /// This is useful for args with many values, or ones which are explained elsewhere in the
- /// help text.
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// To set this for all arguments, see
- /// [`Command::hide_possible_values`][crate::Command::hide_possible_values].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("mode")
- /// .long("mode")
- /// .value_parser(["fast", "slow"])
- /// .action(ArgAction::Set)
- /// .hide_possible_values(true));
- /// ```
- /// If we were to run the above program with `--help` the `[values: fast, slow]` portion of
- /// the help text would be omitted.
- #[inline]
- #[must_use]
- pub fn hide_possible_values(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HidePossibleValues)
- } else {
- self.unset_setting(ArgSettings::HidePossibleValues)
- }
- }
-
- /// Do not display the default value of the argument in the help message.
- ///
- /// This is useful when default behavior of an arg is explained elsewhere in the help text.
- ///
- /// **NOTE:** Setting this requires [taking values][Arg::num_args]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("connect")
- /// .arg(Arg::new("host")
- /// .long("host")
- /// .default_value("localhost")
- /// .action(ArgAction::Set)
- /// .hide_default_value(true));
- ///
- /// ```
- ///
- /// If we were to run the above program with `--help` the `[default: localhost]` portion of
- /// the help text would be omitted.
- #[inline]
- #[must_use]
- pub fn hide_default_value(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HideDefaultValue)
- } else {
- self.unset_setting(ArgSettings::HideDefaultValue)
- }
- }
-
- /// Do not display in help the environment variable name.
- ///
- /// This is useful when the variable option is explained elsewhere in the help text.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("mode")
- /// .long("mode")
- /// .env("MODE")
- /// .action(ArgAction::Set)
- /// .hide_env(true));
- /// ```
- ///
- /// If we were to run the above program with `--help` the `[env: MODE]` portion of the help
- /// text would be omitted.
- #[cfg(feature = "env")]
- #[inline]
- #[must_use]
- pub fn hide_env(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HideEnv)
- } else {
- self.unset_setting(ArgSettings::HideEnv)
- }
- }
-
- /// Do not display in help any values inside the associated ENV variables for the argument.
- ///
- /// This is useful when ENV vars contain sensitive values.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("connect")
- /// .arg(Arg::new("host")
- /// .long("host")
- /// .env("CONNECT")
- /// .action(ArgAction::Set)
- /// .hide_env_values(true));
- ///
- /// ```
- ///
- /// If we were to run the above program with `$ CONNECT=super_secret connect --help` the
- /// `[default: CONNECT=super_secret]` portion of the help text would be omitted.
- #[cfg(feature = "env")]
- #[inline]
- #[must_use]
- pub fn hide_env_values(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HideEnvValues)
- } else {
- self.unset_setting(ArgSettings::HideEnvValues)
- }
- }
-
- /// Hides an argument from short help (`-h`).
- ///
- /// **NOTE:** This does **not** hide the argument from usage strings on error
- ///
- /// **NOTE:** Setting this option will cause next-line-help output style to be used
- /// when long help (`--help`) is called.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Arg::new("debug")
- /// .hide_short_help(true);
- /// ```
- ///
- /// Setting `hide_short_help(true)` will hide the argument when displaying short help text
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .hide_short_help(true)
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "-h"
- /// ]);
- /// ```
- ///
- /// The above example displays
- ///
- /// ```text
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- ///
- /// However, when --help is called
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .hide_short_help(true)
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// Then the following would be displayed
- ///
- /// ```text
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// Options:
- /// --config Some help text describing the --config arg
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- #[inline]
- #[must_use]
- pub fn hide_short_help(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HiddenShortHelp)
- } else {
- self.unset_setting(ArgSettings::HiddenShortHelp)
- }
- }
-
- /// Hides an argument from long help (`--help`).
- ///
- /// **NOTE:** This does **not** hide the argument from usage strings on error
- ///
- /// **NOTE:** Setting this option will cause next-line-help output style to be used
- /// when long help (`--help`) is called.
- ///
- /// # Examples
- ///
- /// Setting `hide_long_help(true)` will hide the argument when displaying long help text
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .hide_long_help(true)
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays
- ///
- /// ```text
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// Options:
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- ///
- /// However, when -h is called
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .long("config")
- /// .hide_long_help(true)
- /// .help("Some help text describing the --config arg"))
- /// .get_matches_from(vec![
- /// "prog", "-h"
- /// ]);
- /// ```
- ///
- /// Then the following would be displayed
- ///
- /// ```text
- /// helptest
- ///
- /// Usage: helptest [OPTIONS]
- ///
- /// OPTIONS:
- /// --config Some help text describing the --config arg
- /// -h, --help Print help information
- /// -V, --version Print version information
- /// ```
- #[inline]
- #[must_use]
- pub fn hide_long_help(self, yes: bool) -> Self {
- if yes {
- self.setting(ArgSettings::HiddenLongHelp)
- } else {
- self.unset_setting(ArgSettings::HiddenLongHelp)
- }
- }
-}
-
-/// # Advanced Argument Relations
-impl Arg {
- /// The name of the [`ArgGroup`] the argument belongs to.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue)
- /// .group("mode")
- /// # ;
- /// ```
- ///
- /// Multiple arguments can be a member of a single group and then the group checked as if it
- /// was one of said arguments.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue)
- /// .group("mode"))
- /// .arg(Arg::new("verbose")
- /// .long("verbose")
- /// .action(ArgAction::SetTrue)
- /// .group("mode"))
- /// .get_matches_from(vec![
- /// "prog", "--debug"
- /// ]);
- /// assert!(m.contains_id("mode"));
- /// ```
- ///
- /// [`ArgGroup`]: crate::ArgGroup
- #[must_use]
- pub fn group(mut self, group_id: impl IntoResettable<Id>) -> Self {
- if let Some(group_id) = group_id.into_resettable().into_option() {
- self.groups.push(group_id);
- } else {
- self.groups.clear();
- }
- self
- }
-
- /// The names of [`ArgGroup`]'s the argument belongs to.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue)
- /// .groups(["mode", "verbosity"])
- /// # ;
- /// ```
- ///
- /// Arguments can be members of multiple groups and then the group checked as if it
- /// was one of said arguments.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue)
- /// .groups(["mode", "verbosity"]))
- /// .arg(Arg::new("verbose")
- /// .long("verbose")
- /// .action(ArgAction::SetTrue)
- /// .groups(["mode", "verbosity"]))
- /// .get_matches_from(vec![
- /// "prog", "--debug"
- /// ]);
- /// assert!(m.contains_id("mode"));
- /// assert!(m.contains_id("verbosity"));
- /// ```
- ///
- /// [`ArgGroup`]: crate::ArgGroup
- #[must_use]
- pub fn groups(mut self, group_ids: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- self.groups.extend(group_ids.into_iter().map(Into::into));
- self
- }
-
- /// Specifies the value of the argument if `arg` has been used at runtime.
- ///
- /// If `default` is set to `None`, `default_value` will be removed.
- ///
- /// **NOTE:** This setting is perfectly compatible with [`Arg::default_value`] but slightly
- /// different. `Arg::default_value` *only* takes effect when the user has not provided this arg
- /// at runtime. This setting however only takes effect when the user has not provided a value at
- /// runtime **and** these other conditions are met as well. If you have set `Arg::default_value`
- /// and `Arg::default_value_if`, and the user **did not** provide this arg at runtime, nor were
- /// the conditions met for `Arg::default_value_if`, the `Arg::default_value` will be applied.
- ///
- /// **NOTE:** This implicitly sets [`Arg::action(ArgAction::Set)`].
- ///
- /// # Examples
- ///
- /// First we use the default value only if another arg is present at runtime.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// # use clap::builder::{ArgPredicate};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_if("flag", ArgPredicate::IsPresent, Some("default")))
- /// .get_matches_from(vec![
- /// "prog", "--flag"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other").unwrap(), "default");
- /// ```
- ///
- /// Next we run the same test, but without providing `--flag`.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_if("flag", "true", Some("default")))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other"), None);
- /// ```
- ///
- /// Now lets only use the default value if `--opt` contains the value `special`.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("opt")
- /// .action(ArgAction::Set)
- /// .long("opt"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_if("opt", "special", Some("default")))
- /// .get_matches_from(vec![
- /// "prog", "--opt", "special"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other").unwrap(), "default");
- /// ```
- ///
- /// We can run the same test and provide any value *other than* `special` and we won't get a
- /// default value.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("opt")
- /// .action(ArgAction::Set)
- /// .long("opt"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_if("opt", "special", Some("default")))
- /// .get_matches_from(vec![
- /// "prog", "--opt", "hahaha"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other"), None);
- /// ```
- ///
- /// If we want to unset the default value for an Arg based on the presence or
- /// value of some other Arg.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value("default")
- /// .default_value_if("flag", "true", None))
- /// .get_matches_from(vec![
- /// "prog", "--flag"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other"), None);
- /// ```
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::default_value`]: Arg::default_value()
- #[must_use]
- pub fn default_value_if(
- mut self,
- arg_id: impl Into<Id>,
- predicate: impl Into<ArgPredicate>,
- default: impl IntoResettable<OsStr>,
- ) -> Self {
- self.default_vals_ifs.push((
- arg_id.into(),
- predicate.into(),
- default.into_resettable().into_option(),
- ));
- self
- }
-
- #[must_use]
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::default_value_if`")
- )]
- pub fn default_value_if_os(
- self,
- arg_id: impl Into<Id>,
- predicate: impl Into<ArgPredicate>,
- default: impl IntoResettable<OsStr>,
- ) -> Self {
- self.default_value_if(arg_id, predicate, default)
- }
-
- /// Specifies multiple values and conditions in the same manner as [`Arg::default_value_if`].
- ///
- /// The method takes a slice of tuples in the `(arg, predicate, default)` format.
- ///
- /// **NOTE**: The conditions are stored in order and evaluated in the same order. I.e. the first
- /// if multiple conditions are true, the first one found will be applied and the ultimate value.
- ///
- /// # Examples
- ///
- /// First we use the default value only if another arg is present at runtime.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("opt")
- /// .long("opt")
- /// .action(ArgAction::Set))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_ifs([
- /// ("flag", "true", Some("default")),
- /// ("opt", "channal", Some("chan")),
- /// ]))
- /// .get_matches_from(vec![
- /// "prog", "--opt", "channal"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other").unwrap(), "chan");
- /// ```
- ///
- /// Next we run the same test, but without providing `--flag`.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_ifs([
- /// ("flag", "true", Some("default")),
- /// ("opt", "channal", Some("chan")),
- /// ]))
- /// .get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other"), None);
- /// ```
- ///
- /// We can also see that these values are applied in order, and if more than one condition is
- /// true, only the first evaluated "wins"
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// # use clap::builder::ArgPredicate;
- /// let m = Command::new("prog")
- /// .arg(Arg::new("flag")
- /// .long("flag")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("opt")
- /// .long("opt")
- /// .action(ArgAction::Set))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .default_value_ifs([
- /// ("flag", ArgPredicate::IsPresent, Some("default")),
- /// ("opt", ArgPredicate::Equals("channal".into()), Some("chan")),
- /// ]))
- /// .get_matches_from(vec![
- /// "prog", "--opt", "channal", "--flag"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("other").unwrap(), "default");
- /// ```
- /// [`Arg::action(ArgAction::Set)`]: Arg::action()
- /// [`Arg::default_value_if`]: Arg::default_value_if()
- #[must_use]
- pub fn default_value_ifs(
- mut self,
- ifs: impl IntoIterator<
- Item = (
- impl Into<Id>,
- impl Into<ArgPredicate>,
- impl IntoResettable<OsStr>,
- ),
- >,
- ) -> Self {
- for (arg, predicate, default) in ifs {
- self = self.default_value_if(arg, predicate, default);
- }
- self
- }
-
- #[must_use]
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::default_value_ifs`")
- )]
- pub fn default_value_ifs_os(
- self,
- ifs: impl IntoIterator<
- Item = (
- impl Into<Id>,
- impl Into<ArgPredicate>,
- impl IntoResettable<OsStr>,
- ),
- >,
- ) -> Self {
- self.default_value_ifs(ifs)
- }
-
- /// Set this arg as [required] as long as the specified argument is not present at runtime.
- ///
- /// **Pro Tip:** Using `Arg::required_unless_present` implies [`Arg::required`] and is therefore not
- /// mandatory to also set.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_unless_present("debug")
- /// # ;
- /// ```
- ///
- /// In the following example, the required argument is *not* provided,
- /// but it's not an error because the `unless` arg has been supplied.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present("dbg")
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .try_get_matches_from(vec![
- /// "prog", "--debug"
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// ```
- ///
- /// Setting `Arg::required_unless_present(name)` and *not* supplying `name` or this arg is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present("dbg")
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug"))
- /// .try_get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required]: Arg::required()
- #[must_use]
- pub fn required_unless_present(mut self, arg_id: impl IntoResettable<Id>) -> Self {
- if let Some(arg_id) = arg_id.into_resettable().into_option() {
- self.r_unless.push(arg_id);
- } else {
- self.r_unless.clear();
- }
- self
- }
-
- /// Sets this arg as [required] unless *all* of the specified arguments are present at runtime.
- ///
- /// In other words, parsing will succeed only if user either
- /// * supplies the `self` arg.
- /// * supplies *all* of the `names` arguments.
- ///
- /// **NOTE:** If you wish for this argument to only be required unless *any of* these args are
- /// present see [`Arg::required_unless_present_any`]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_unless_present_all(["cfg", "dbg"])
- /// # ;
- /// ```
- ///
- /// In the following example, the required argument is *not* provided, but it's not an error
- /// because *all* of the `names` args have been supplied.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present_all(["dbg", "infile"])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("infile")
- /// .short('i')
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--debug", "-i", "file"
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// ```
- ///
- /// Setting [`Arg::required_unless_present_all(names)`] and *not* supplying
- /// either *all* of `unless` args or the `self` arg is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present_all(["dbg", "infile"])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("infile")
- /// .short('i')
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required]: Arg::required()
- /// [`Arg::required_unless_present_any`]: Arg::required_unless_present_any()
- /// [`Arg::required_unless_present_all(names)`]: Arg::required_unless_present_all()
- #[must_use]
- pub fn required_unless_present_all(
- mut self,
- names: impl IntoIterator<Item = impl Into<Id>>,
- ) -> Self {
- self.r_unless_all.extend(names.into_iter().map(Into::into));
- self
- }
-
- /// Sets this arg as [required] unless *any* of the specified arguments are present at runtime.
- ///
- /// In other words, parsing will succeed only if user either
- /// * supplies the `self` arg.
- /// * supplies *one or more* of the `unless` arguments.
- ///
- /// **NOTE:** If you wish for this argument to be required unless *all of* these args are
- /// present see [`Arg::required_unless_present_all`]
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_unless_present_any(["cfg", "dbg"])
- /// # ;
- /// ```
- ///
- /// Setting [`Arg::required_unless_present_any(names)`] requires that the argument be used at runtime
- /// *unless* *at least one of* the args in `names` are present. In the following example, the
- /// required argument is *not* provided, but it's not an error because one the `unless` args
- /// have been supplied.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present_any(["dbg", "infile"])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("infile")
- /// .short('i')
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--debug"
- /// ]);
- ///
- /// assert!(res.is_ok());
- /// ```
- ///
- /// Setting [`Arg::required_unless_present_any(names)`] and *not* supplying *at least one of* `names`
- /// or this arg is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_unless_present_any(["dbg", "infile"])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("dbg")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("infile")
- /// .short('i')
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required]: Arg::required()
- /// [`Arg::required_unless_present_any(names)`]: Arg::required_unless_present_any()
- /// [`Arg::required_unless_present_all`]: Arg::required_unless_present_all()
- #[must_use]
- pub fn required_unless_present_any(
- mut self,
- names: impl IntoIterator<Item = impl Into<Id>>,
- ) -> Self {
- self.r_unless.extend(names.into_iter().map(Into::into));
- self
- }
-
- /// This argument is [required] only if the specified `arg` is present at runtime and its value
- /// equals `val`.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_if_eq("other_arg", "value")
- /// # ;
- /// ```
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .required_if_eq("other", "special")
- /// .long("config"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--other", "not-special"
- /// ]);
- ///
- /// assert!(res.is_ok()); // We didn't use --other=special, so "cfg" wasn't required
- ///
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .required_if_eq("other", "special")
- /// .long("config"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--other", "special"
- /// ]);
- ///
- /// // We did use --other=special so "cfg" had become required but was missing.
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- ///
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .required_if_eq("other", "special")
- /// .long("config"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--other", "SPECIAL"
- /// ]);
- ///
- /// // By default, the comparison is case-sensitive, so "cfg" wasn't required
- /// assert!(res.is_ok());
- ///
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .required_if_eq("other", "special")
- /// .long("config"))
- /// .arg(Arg::new("other")
- /// .long("other")
- /// .ignore_case(true)
- /// .action(ArgAction::Set))
- /// .try_get_matches_from(vec![
- /// "prog", "--other", "SPECIAL"
- /// ]);
- ///
- /// // However, case-insensitive comparisons can be enabled. This typically occurs when using Arg::possible_values().
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [`Arg::requires(name)`]: Arg::requires()
- /// [Conflicting]: Arg::conflicts_with()
- /// [required]: Arg::required()
- #[must_use]
- pub fn required_if_eq(mut self, arg_id: impl Into<Id>, val: impl Into<OsStr>) -> Self {
- self.r_ifs.push((arg_id.into(), val.into()));
- self
- }
-
- /// Specify this argument is [required] based on multiple conditions.
- ///
- /// The conditions are set up in a `(arg, val)` style tuple. The requirement will only become
- /// valid if one of the specified `arg`'s value equals its corresponding `val`.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_if_eq_any([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// # ;
- /// ```
- ///
- /// Setting `Arg::required_if_eq_any([(arg, val)])` makes this arg required if any of the `arg`s
- /// are used at runtime and it's corresponding value is equal to `val`. If the `arg`'s value is
- /// anything other than `val`, this argument isn't required.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_if_eq_any([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("extra")
- /// .action(ArgAction::Set)
- /// .long("extra"))
- /// .arg(Arg::new("option")
- /// .action(ArgAction::Set)
- /// .long("option"))
- /// .try_get_matches_from(vec![
- /// "prog", "--option", "other"
- /// ]);
- ///
- /// assert!(res.is_ok()); // We didn't use --option=spec, or --extra=val so "cfg" isn't required
- /// ```
- ///
- /// Setting `Arg::required_if_eq_any([(arg, val)])` and having any of the `arg`s used with its
- /// value of `val` but *not* using this arg is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_if_eq_any([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("extra")
- /// .action(ArgAction::Set)
- /// .long("extra"))
- /// .arg(Arg::new("option")
- /// .action(ArgAction::Set)
- /// .long("option"))
- /// .try_get_matches_from(vec![
- /// "prog", "--option", "spec"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [`Arg::requires(name)`]: Arg::requires()
- /// [Conflicting]: Arg::conflicts_with()
- /// [required]: Arg::required()
- #[must_use]
- pub fn required_if_eq_any(
- mut self,
- ifs: impl IntoIterator<Item = (impl Into<Id>, impl Into<OsStr>)>,
- ) -> Self {
- self.r_ifs
- .extend(ifs.into_iter().map(|(id, val)| (id.into(), val.into())));
- self
- }
-
- /// Specify this argument is [required] based on multiple conditions.
- ///
- /// The conditions are set up in a `(arg, val)` style tuple. The requirement will only become
- /// valid if every one of the specified `arg`'s value equals its corresponding `val`.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .required_if_eq_all([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// # ;
- /// ```
- ///
- /// Setting `Arg::required_if_eq_all([(arg, val)])` makes this arg required if all of the `arg`s
- /// are used at runtime and every value is equal to its corresponding `val`. If the `arg`'s value is
- /// anything other than `val`, this argument isn't required.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_if_eq_all([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("extra")
- /// .action(ArgAction::Set)
- /// .long("extra"))
- /// .arg(Arg::new("option")
- /// .action(ArgAction::Set)
- /// .long("option"))
- /// .try_get_matches_from(vec![
- /// "prog", "--option", "spec"
- /// ]);
- ///
- /// assert!(res.is_ok()); // We didn't use --option=spec --extra=val so "cfg" isn't required
- /// ```
- ///
- /// Setting `Arg::required_if_eq_all([(arg, val)])` and having all of the `arg`s used with its
- /// value of `val` but *not* using this arg is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .required_if_eq_all([
- /// ("extra", "val"),
- /// ("option", "spec")
- /// ])
- /// .action(ArgAction::Set)
- /// .long("config"))
- /// .arg(Arg::new("extra")
- /// .action(ArgAction::Set)
- /// .long("extra"))
- /// .arg(Arg::new("option")
- /// .action(ArgAction::Set)
- /// .long("option"))
- /// .try_get_matches_from(vec![
- /// "prog", "--extra", "val", "--option", "spec"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required]: Arg::required()
- #[must_use]
- pub fn required_if_eq_all(
- mut self,
- ifs: impl IntoIterator<Item = (impl Into<Id>, impl Into<OsStr>)>,
- ) -> Self {
- self.r_ifs_all
- .extend(ifs.into_iter().map(|(id, val)| (id.into(), val.into())));
- self
- }
-
- /// Require another argument if this arg matches the [`ArgPredicate`]
- ///
- /// This method takes `value, another_arg` pair. At runtime, clap will check
- /// if this arg (`self`) matches the [`ArgPredicate`].
- /// If it does, `another_arg` will be marked as required.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .requires_if("val", "arg")
- /// # ;
- /// ```
- ///
- /// Setting `Arg::requires_if(val, arg)` requires that the `arg` be used at runtime if the
- /// defining argument's value is equal to `val`. If the defining argument is anything other than
- /// `val`, the other argument isn't required.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires_if("my.cfg", "other")
- /// .long("config"))
- /// .arg(Arg::new("other"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "some.cfg"
- /// ]);
- ///
- /// assert!(res.is_ok()); // We didn't use --config=my.cfg, so other wasn't required
- /// ```
- ///
- /// Setting `Arg::requires_if(val, arg)` and setting the value to `val` but *not* supplying
- /// `arg` is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires_if("my.cfg", "input")
- /// .long("config"))
- /// .arg(Arg::new("input"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "my.cfg"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [`Arg::requires(name)`]: Arg::requires()
- /// [Conflicting]: Arg::conflicts_with()
- /// [override]: Arg::overrides_with()
- #[must_use]
- pub fn requires_if(mut self, val: impl Into<ArgPredicate>, arg_id: impl Into<Id>) -> Self {
- self.requires.push((val.into(), arg_id.into()));
- self
- }
-
- /// Allows multiple conditional requirements.
- ///
- /// The requirement will only become valid if this arg's value matches the
- /// [`ArgPredicate`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .requires_ifs([
- /// ("val", "arg"),
- /// ("other_val", "arg2"),
- /// ])
- /// # ;
- /// ```
- ///
- /// Setting `Arg::requires_ifs(["val", "arg"])` requires that the `arg` be used at runtime if the
- /// defining argument's value is equal to `val`. If the defining argument's value is anything other
- /// than `val`, `arg` isn't required.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires_ifs([
- /// ("special.conf", "opt"),
- /// ("other.conf", "other"),
- /// ])
- /// .long("config"))
- /// .arg(Arg::new("opt")
- /// .long("option")
- /// .action(ArgAction::Set))
- /// .arg(Arg::new("other"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "special.conf"
- /// ]);
- ///
- /// assert!(res.is_err()); // We used --config=special.conf so --option <val> is required
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- ///
- /// Setting `Arg::requires_ifs` with [`ArgPredicate::IsPresent`] and *not* supplying all the
- /// arguments is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction, builder::ArgPredicate};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .requires_ifs([
- /// (ArgPredicate::IsPresent, "input"),
- /// (ArgPredicate::IsPresent, "output"),
- /// ])
- /// .long("config"))
- /// .arg(Arg::new("input"))
- /// .arg(Arg::new("output"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "file.conf", "in.txt"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// // We didn't use output
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- ///
- /// [`Arg::requires(name)`]: Arg::requires()
- /// [Conflicting]: Arg::conflicts_with()
- /// [override]: Arg::overrides_with()
- #[must_use]
- pub fn requires_ifs(
- mut self,
- ifs: impl IntoIterator<Item = (impl Into<ArgPredicate>, impl Into<Id>)>,
- ) -> Self {
- self.requires
- .extend(ifs.into_iter().map(|(val, arg)| (val.into(), arg.into())));
- self
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::requires_ifs`")
- )]
- pub fn requires_all(self, ids: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- self.requires_ifs(ids.into_iter().map(|id| (ArgPredicate::IsPresent, id)))
- }
-
- /// This argument is mutually exclusive with the specified argument.
- ///
- /// **NOTE:** Conflicting rules take precedence over being required by default. Conflict rules
- /// only need to be set for one of the two arguments, they do not need to be set for each.
- ///
- /// **NOTE:** Defining a conflict is two-way, but does *not* need to defined for both arguments
- /// (i.e. if A conflicts with B, defining A.conflicts_with(B) is sufficient. You do not
- /// need to also do B.conflicts_with(A))
- ///
- /// **NOTE:** [`Arg::conflicts_with_all(names)`] allows specifying an argument which conflicts with more than one argument.
- ///
- /// **NOTE** [`Arg::exclusive(true)`] allows specifying an argument which conflicts with every other argument.
- ///
- /// **NOTE:** All arguments implicitly conflict with themselves.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .conflicts_with("debug")
- /// # ;
- /// ```
- ///
- /// Setting conflicting argument, and having both arguments present at runtime is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .conflicts_with("debug")
- /// .long("config"))
- /// .arg(Arg::new("debug")
- /// .long("debug")
- /// .action(ArgAction::SetTrue))
- /// .try_get_matches_from(vec![
- /// "prog", "--debug", "--config", "file.conf"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::ArgumentConflict);
- /// ```
- ///
- /// [`Arg::conflicts_with_all(names)`]: Arg::conflicts_with_all()
- /// [`Arg::exclusive(true)`]: Arg::exclusive()
- #[must_use]
- pub fn conflicts_with(mut self, arg_id: impl IntoResettable<Id>) -> Self {
- if let Some(arg_id) = arg_id.into_resettable().into_option() {
- self.blacklist.push(arg_id);
- } else {
- self.blacklist.clear();
- }
- self
- }
-
- /// This argument is mutually exclusive with the specified arguments.
- ///
- /// See [`Arg::conflicts_with`].
- ///
- /// **NOTE:** Conflicting rules take precedence over being required by default. Conflict rules
- /// only need to be set for one of the two arguments, they do not need to be set for each.
- ///
- /// **NOTE:** Defining a conflict is two-way, but does *not* need to defined for both arguments
- /// (i.e. if A conflicts with B, defining A.conflicts_with(B) is sufficient. You do not need
- /// need to also do B.conflicts_with(A))
- ///
- /// **NOTE:** [`Arg::exclusive(true)`] allows specifying an argument which conflicts with every other argument.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// Arg::new("config")
- /// .conflicts_with_all(["debug", "input"])
- /// # ;
- /// ```
- ///
- /// Setting conflicting argument, and having any of the arguments present at runtime with a
- /// conflicting argument is an error.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind, ArgAction};
- /// let res = Command::new("prog")
- /// .arg(Arg::new("cfg")
- /// .action(ArgAction::Set)
- /// .conflicts_with_all(["debug", "input"])
- /// .long("config"))
- /// .arg(Arg::new("debug")
- /// .long("debug"))
- /// .arg(Arg::new("input"))
- /// .try_get_matches_from(vec![
- /// "prog", "--config", "file.conf", "file.txt"
- /// ]);
- ///
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::ArgumentConflict);
- /// ```
- /// [`Arg::conflicts_with`]: Arg::conflicts_with()
- /// [`Arg::exclusive(true)`]: Arg::exclusive()
- #[must_use]
- pub fn conflicts_with_all(mut self, names: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- self.blacklist.extend(names.into_iter().map(Into::into));
- self
- }
-
- /// Sets an overridable argument.
- ///
- /// i.e. this argument and the following argument
- /// will override each other in POSIX style (whichever argument was specified at runtime
- /// **last** "wins")
- ///
- /// **NOTE:** When an argument is overridden it is essentially as if it never was used, any
- /// conflicts, requirements, etc. are evaluated **after** all "overrides" have been removed
- ///
- /// **NOTE:** Overriding an argument implies they [conflict][Arg::conflicts_with`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, arg};
- /// let m = Command::new("prog")
- /// .arg(arg!(-f --flag "some flag")
- /// .conflicts_with("debug"))
- /// .arg(arg!(-d --debug "other flag"))
- /// .arg(arg!(-c --color "third flag")
- /// .overrides_with("flag"))
- /// .get_matches_from(vec![
- /// "prog", "-f", "-d", "-c"]);
- /// // ^~~~~~~~~~~~^~~~~ flag is overridden by color
- ///
- /// assert!(m.get_flag("color"));
- /// assert!(m.get_flag("debug")); // even though flag conflicts with debug, it's as if flag
- /// // was never used because it was overridden with color
- /// assert!(!m.get_flag("flag"));
- /// ```
- #[must_use]
- pub fn overrides_with(mut self, arg_id: impl IntoResettable<Id>) -> Self {
- if let Some(arg_id) = arg_id.into_resettable().into_option() {
- self.overrides.push(arg_id);
- } else {
- self.overrides.clear();
- }
- self
- }
-
- /// Sets multiple mutually overridable arguments by name.
- ///
- /// i.e. this argument and the following argument will override each other in POSIX style
- /// (whichever argument was specified at runtime **last** "wins")
- ///
- /// **NOTE:** When an argument is overridden it is essentially as if it never was used, any
- /// conflicts, requirements, etc. are evaluated **after** all "overrides" have been removed
- ///
- /// **NOTE:** Overriding an argument implies they [conflict][Arg::conflicts_with_all`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, arg};
- /// let m = Command::new("prog")
- /// .arg(arg!(-f --flag "some flag")
- /// .conflicts_with("color"))
- /// .arg(arg!(-d --debug "other flag"))
- /// .arg(arg!(-c --color "third flag")
- /// .overrides_with_all(["flag", "debug"]))
- /// .get_matches_from(vec![
- /// "prog", "-f", "-d", "-c"]);
- /// // ^~~~~~^~~~~~~~~ flag and debug are overridden by color
- ///
- /// assert!(m.get_flag("color")); // even though flag conflicts with color, it's as if flag
- /// // and debug were never used because they were overridden
- /// // with color
- /// assert!(!m.get_flag("debug"));
- /// assert!(!m.get_flag("flag"));
- /// ```
- #[must_use]
- pub fn overrides_with_all(mut self, names: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- self.overrides.extend(names.into_iter().map(Into::into));
- self
- }
-}
-
-/// # Reflection
-impl Arg {
- /// Get the name of the argument
- #[inline]
- pub fn get_id(&self) -> &Id {
- &self.id
- }
-
- /// Get the help specified for this argument, if any
- #[inline]
- pub fn get_help(&self) -> Option<&StyledStr> {
- self.help.as_ref()
- }
-
- /// Get the long help specified for this argument, if any
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// let arg = Arg::new("foo").long_help("long help");
- /// assert_eq!(Some("long help".to_owned()), arg.get_long_help().map(|s| s.to_string()));
- /// ```
- ///
- #[inline]
- pub fn get_long_help(&self) -> Option<&StyledStr> {
- self.long_help.as_ref()
- }
-
- /// Get the help heading specified for this argument, if any
- #[inline]
- pub fn get_help_heading(&self) -> Option<&str> {
- self.help_heading
- .as_ref()
- .map(|s| s.as_deref())
- .unwrap_or_default()
- }
-
- /// Get the short option name for this argument, if any
- #[inline]
- pub fn get_short(&self) -> Option<char> {
- self.short
- }
-
- /// Get visible short aliases for this argument, if any
- #[inline]
- pub fn get_visible_short_aliases(&self) -> Option<Vec<char>> {
- if self.short_aliases.is_empty() {
- None
- } else {
- Some(
- self.short_aliases
- .iter()
- .filter_map(|(c, v)| if *v { Some(c) } else { None })
- .copied()
- .collect(),
- )
- }
- }
-
- /// Get *all* short aliases for this argument, if any, both visible and hidden.
- #[inline]
- pub fn get_all_short_aliases(&self) -> Option<Vec<char>> {
- if self.short_aliases.is_empty() {
- None
- } else {
- Some(self.short_aliases.iter().map(|(s, _)| s).copied().collect())
- }
- }
-
- /// Get the short option name and its visible aliases, if any
- #[inline]
- pub fn get_short_and_visible_aliases(&self) -> Option<Vec<char>> {
- let mut shorts = match self.short {
- Some(short) => vec![short],
- None => return None,
- };
- if let Some(aliases) = self.get_visible_short_aliases() {
- shorts.extend(aliases);
- }
- Some(shorts)
- }
-
- /// Get the long option name for this argument, if any
- #[inline]
- pub fn get_long(&self) -> Option<&str> {
- self.long.as_deref()
- }
-
- /// Get visible aliases for this argument, if any
- #[inline]
- pub fn get_visible_aliases(&self) -> Option<Vec<&str>> {
- if self.aliases.is_empty() {
- None
- } else {
- Some(
- self.aliases
- .iter()
- .filter_map(|(s, v)| if *v { Some(s.as_str()) } else { None })
- .collect(),
- )
- }
- }
-
- /// Get *all* aliases for this argument, if any, both visible and hidden.
- #[inline]
- pub fn get_all_aliases(&self) -> Option<Vec<&str>> {
- if self.aliases.is_empty() {
- None
- } else {
- Some(self.aliases.iter().map(|(s, _)| s.as_str()).collect())
- }
- }
-
- /// Get the long option name and its visible aliases, if any
- #[inline]
- pub fn get_long_and_visible_aliases(&self) -> Option<Vec<&str>> {
- let mut longs = match self.get_long() {
- Some(long) => vec![long],
- None => return None,
- };
- if let Some(aliases) = self.get_visible_aliases() {
- longs.extend(aliases);
- }
- Some(longs)
- }
-
- /// Get the names of possible values for this argument. Only useful for user
- /// facing applications, such as building help messages or man files
- pub fn get_possible_values(&self) -> Vec<PossibleValue> {
- if !self.is_takes_value_set() {
- vec![]
- } else {
- self.get_value_parser()
- .possible_values()
- .map(|pvs| pvs.collect())
- .unwrap_or_default()
- }
- }
-
- /// Get the names of values for this argument.
- #[inline]
- pub fn get_value_names(&self) -> Option<&[Str]> {
- if self.val_names.is_empty() {
- None
- } else {
- Some(&self.val_names)
- }
- }
-
- /// Get the number of values for this argument.
- #[inline]
- pub fn get_num_args(&self) -> Option<ValueRange> {
- self.num_vals
- }
-
- #[inline]
- pub(crate) fn get_min_vals(&self) -> usize {
- self.get_num_args().expect(INTERNAL_ERROR_MSG).min_values()
- }
-
- /// Get the delimiter between multiple values
- #[inline]
- pub fn get_value_delimiter(&self) -> Option<char> {
- self.val_delim
- }
-
- /// Get the value terminator for this argument. The value_terminator is a value
- /// that terminates parsing of multi-valued arguments.
- #[inline]
- pub fn get_value_terminator(&self) -> Option<&Str> {
- self.terminator.as_ref()
- }
-
- /// Get the index of this argument, if any
- #[inline]
- pub fn get_index(&self) -> Option<usize> {
- self.index
- }
-
- /// Get the value hint of this argument
- pub fn get_value_hint(&self) -> ValueHint {
- self.value_hint.unwrap_or_else(|| {
- if self.is_takes_value_set() {
- let type_id = self.get_value_parser().type_id();
- if type_id == crate::parser::AnyValueId::of::<std::path::PathBuf>() {
- ValueHint::AnyPath
- } else {
- ValueHint::default()
- }
- } else {
- ValueHint::default()
- }
- })
- }
-
- /// Get the environment variable name specified for this argument, if any
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use std::ffi::OsStr;
- /// # use clap::Arg;
- /// let arg = Arg::new("foo").env("ENVIRONMENT");
- /// assert_eq!(arg.get_env(), Some(OsStr::new("ENVIRONMENT")));
- /// ```
- #[cfg(feature = "env")]
- pub fn get_env(&self) -> Option<&std::ffi::OsStr> {
- self.env.as_ref().map(|x| x.0.as_os_str())
- }
-
- /// Get the default values specified for this argument, if any
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Arg;
- /// let arg = Arg::new("foo").default_value("default value");
- /// assert_eq!(arg.get_default_values(), &["default value"]);
- /// ```
- pub fn get_default_values(&self) -> &[OsStr] {
- &self.default_vals
- }
-
- /// Checks whether this argument is a positional or not.
- ///
- /// # Examples
- ///
- /// ```
- /// # use clap::Arg;
- /// let arg = Arg::new("foo");
- /// assert_eq!(arg.is_positional(), true);
- ///
- /// let arg = Arg::new("foo").long("foo");
- /// assert_eq!(arg.is_positional(), false);
- /// ```
- pub fn is_positional(&self) -> bool {
- self.get_long().is_none() && self.get_short().is_none()
- }
-
- /// Reports whether [`Arg::required`] is set
- pub fn is_required_set(&self) -> bool {
- self.is_set(ArgSettings::Required)
- }
-
- pub(crate) fn is_multiple_values_set(&self) -> bool {
- self.get_num_args().unwrap_or_default().is_multiple()
- }
-
- pub(crate) fn is_takes_value_set(&self) -> bool {
- self.get_action().takes_values()
- }
-
- /// Report whether [`Arg::allow_hyphen_values`] is set
- pub fn is_allow_hyphen_values_set(&self) -> bool {
- self.is_set(ArgSettings::AllowHyphenValues)
- }
-
- /// Report whether [`Arg::allow_negative_numbers`] is set
- pub fn is_allow_negative_numbers_set(&self) -> bool {
- self.is_set(ArgSettings::AllowNegativeNumbers)
- }
-
- /// Behavior when parsing the argument
- pub fn get_action(&self) -> &super::ArgAction {
- const DEFAULT: super::ArgAction = super::ArgAction::Set;
- self.action.as_ref().unwrap_or(&DEFAULT)
- }
-
- /// Configured parser for argument values
- ///
- /// # Example
- ///
- /// ```rust
- /// let cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("port")
- /// .value_parser(clap::value_parser!(usize))
- /// );
- /// let value_parser = cmd.get_arguments()
- /// .find(|a| a.get_id() == "port").unwrap()
- /// .get_value_parser();
- /// println!("{:?}", value_parser);
- /// ```
- pub fn get_value_parser(&self) -> &super::ValueParser {
- if let Some(value_parser) = self.value_parser.as_ref() {
- value_parser
- } else {
- static DEFAULT: super::ValueParser = super::ValueParser::string();
- &DEFAULT
- }
- }
-
- /// Report whether [`Arg::global`] is set
- pub fn is_global_set(&self) -> bool {
- self.is_set(ArgSettings::Global)
- }
-
- /// Report whether [`Arg::next_line_help`] is set
- pub fn is_next_line_help_set(&self) -> bool {
- self.is_set(ArgSettings::NextLineHelp)
- }
-
- /// Report whether [`Arg::hide`] is set
- pub fn is_hide_set(&self) -> bool {
- self.is_set(ArgSettings::Hidden)
- }
-
- /// Report whether [`Arg::hide_default_value`] is set
- pub fn is_hide_default_value_set(&self) -> bool {
- self.is_set(ArgSettings::HideDefaultValue)
- }
-
- /// Report whether [`Arg::hide_possible_values`] is set
- pub fn is_hide_possible_values_set(&self) -> bool {
- self.is_set(ArgSettings::HidePossibleValues)
- }
-
- /// Report whether [`Arg::hide_env`] is set
- #[cfg(feature = "env")]
- pub fn is_hide_env_set(&self) -> bool {
- self.is_set(ArgSettings::HideEnv)
- }
-
- /// Report whether [`Arg::hide_env_values`] is set
- #[cfg(feature = "env")]
- pub fn is_hide_env_values_set(&self) -> bool {
- self.is_set(ArgSettings::HideEnvValues)
- }
-
- /// Report whether [`Arg::hide_short_help`] is set
- pub fn is_hide_short_help_set(&self) -> bool {
- self.is_set(ArgSettings::HiddenShortHelp)
- }
-
- /// Report whether [`Arg::hide_long_help`] is set
- pub fn is_hide_long_help_set(&self) -> bool {
- self.is_set(ArgSettings::HiddenLongHelp)
- }
-
- /// Report whether [`Arg::require_equals`] is set
- pub fn is_require_equals_set(&self) -> bool {
- self.is_set(ArgSettings::RequireEquals)
- }
-
- /// Reports whether [`Arg::exclusive`] is set
- pub fn is_exclusive_set(&self) -> bool {
- self.is_set(ArgSettings::Exclusive)
- }
-
- /// Report whether [`Arg::trailing_var_arg`] is set
- pub fn is_trailing_var_arg_set(&self) -> bool {
- self.is_set(ArgSettings::TrailingVarArg)
- }
-
- /// Reports whether [`Arg::last`] is set
- pub fn is_last_set(&self) -> bool {
- self.is_set(ArgSettings::Last)
- }
-
- /// Reports whether [`Arg::ignore_case`] is set
- pub fn is_ignore_case_set(&self) -> bool {
- self.is_set(ArgSettings::IgnoreCase)
- }
-}
-
-/// # Internally used only
-impl Arg {
- pub(crate) fn _build(&mut self) {
- if self.action.is_none() {
- if self.num_vals == Some(ValueRange::EMPTY) {
- let action = super::ArgAction::SetTrue;
- self.action = Some(action);
- } else {
- let action =
- if self.is_positional() && self.num_vals.unwrap_or_default().is_unbounded() {
- // Allow collecting arguments interleaved with flags
- //
- // Bounded values are probably a group and the user should explicitly opt-in to
- // Append
- super::ArgAction::Append
- } else {
- super::ArgAction::Set
- };
- self.action = Some(action);
- }
- }
- if let Some(action) = self.action.as_ref() {
- if let Some(default_value) = action.default_value() {
- if self.default_vals.is_empty() {
- self.default_vals = vec![default_value.into()];
- }
- }
- if let Some(default_value) = action.default_missing_value() {
- if self.default_missing_vals.is_empty() {
- self.default_missing_vals = vec![default_value.into()];
- }
- }
- }
-
- if self.value_parser.is_none() {
- if let Some(default) = self.action.as_ref().and_then(|a| a.default_value_parser()) {
- self.value_parser = Some(default);
- } else {
- self.value_parser = Some(super::ValueParser::string());
- }
- }
-
- let val_names_len = self.val_names.len();
- if val_names_len > 1 {
- self.num_vals.get_or_insert(val_names_len.into());
- } else {
- let nargs = if self.get_action().takes_values() {
- ValueRange::SINGLE
- } else {
- ValueRange::EMPTY
- };
- self.num_vals.get_or_insert(nargs);
- }
- }
-
- // Used for positionals when printing
- pub(crate) fn name_no_brackets(&self) -> String {
- debug!("Arg::name_no_brackets:{}", self.get_id());
- let delim = " ";
- if !self.val_names.is_empty() {
- debug!("Arg::name_no_brackets: val_names={:#?}", self.val_names);
-
- if self.val_names.len() > 1 {
- self.val_names
- .iter()
- .map(|n| format!("<{}>", n))
- .collect::<Vec<_>>()
- .join(delim)
- } else {
- self.val_names
- .first()
- .expect(INTERNAL_ERROR_MSG)
- .as_str()
- .to_owned()
- }
- } else {
- debug!("Arg::name_no_brackets: just name");
- self.get_id().as_str().to_owned()
- }
- }
-
- pub(crate) fn stylized(&self, required: Option<bool>) -> StyledStr {
- let mut styled = StyledStr::new();
- // Write the name such --long or -l
- if let Some(l) = self.get_long() {
- styled.literal("--");
- styled.literal(l);
- } else if let Some(s) = self.get_short() {
- styled.literal("-");
- styled.literal(s);
- }
- styled.extend(self.stylize_arg_suffix(required).into_iter());
- styled
- }
-
- pub(crate) fn stylize_arg_suffix(&self, required: Option<bool>) -> StyledStr {
- let mut styled = StyledStr::new();
-
- let mut need_closing_bracket = false;
- if self.is_takes_value_set() && !self.is_positional() {
- let is_optional_val = self.get_min_vals() == 0;
- if self.is_require_equals_set() {
- if is_optional_val {
- need_closing_bracket = true;
- styled.placeholder("[=");
- } else {
- styled.literal("=");
- }
- } else if is_optional_val {
- need_closing_bracket = true;
- styled.placeholder(" [");
- } else {
- styled.placeholder(" ");
- }
- }
- if self.is_takes_value_set() || self.is_positional() {
- let required = required.unwrap_or_else(|| self.is_required_set());
- let arg_val = self.render_arg_val(required);
- styled.placeholder(arg_val);
- } else if matches!(*self.get_action(), ArgAction::Count) {
- styled.placeholder("...");
- }
- if need_closing_bracket {
- styled.placeholder("]");
- }
-
- styled
- }
-
- /// Write the values such as `<name1> <name2>`
- fn render_arg_val(&self, required: bool) -> String {
- let mut rendered = String::new();
-
- let num_vals = self.get_num_args().unwrap_or_else(|| 1.into());
-
- let mut val_names = if self.val_names.is_empty() {
- vec![self.id.as_internal_str().to_owned()]
- } else {
- self.val_names.clone()
- };
- if val_names.len() == 1 {
- let min = num_vals.min_values().max(1);
- let val_name = val_names.pop().unwrap();
- val_names = vec![val_name; min];
- }
-
- debug_assert!(self.is_takes_value_set());
- for (n, val_name) in val_names.iter().enumerate() {
- let arg_name = if self.is_positional() && (num_vals.min_values() == 0 || !required) {
- format!("[{}]", val_name)
- } else {
- format!("<{}>", val_name)
- };
-
- if n != 0 {
- rendered.push(' ');
- }
- rendered.push_str(&arg_name);
- }
-
- let mut extra_values = false;
- extra_values |= val_names.len() < num_vals.max_values();
- if self.is_positional() && matches!(*self.get_action(), ArgAction::Append) {
- extra_values = true;
- }
- if extra_values {
- rendered.push_str("...");
- }
-
- rendered
- }
-
- /// Either multiple values or occurrences
- pub(crate) fn is_multiple(&self) -> bool {
- self.is_multiple_values_set() || matches!(*self.get_action(), ArgAction::Append)
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn get_display_order(&self) -> usize {
- self.disp_ord.unwrap_or(999)
- }
-}
-
-impl From<&'_ Arg> for Arg {
- fn from(a: &Arg) -> Self {
- a.clone()
- }
-}
-
-impl PartialEq for Arg {
- fn eq(&self, other: &Arg) -> bool {
- self.get_id() == other.get_id()
- }
-}
-
-impl PartialOrd for Arg {
- fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
- Some(self.cmp(other))
- }
-}
-
-impl Ord for Arg {
- fn cmp(&self, other: &Arg) -> Ordering {
- self.get_id().cmp(other.get_id())
- }
-}
-
-impl Eq for Arg {}
-
-impl Display for Arg {
- fn fmt(&self, f: &mut Formatter) -> fmt::Result {
- self.stylized(None).fmt(f)
- }
-}
-
-impl fmt::Debug for Arg {
- fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> {
- let mut ds = f.debug_struct("Arg");
-
- #[allow(unused_mut)]
- let mut ds = ds
- .field("id", &self.id)
- .field("help", &self.help)
- .field("long_help", &self.long_help)
- .field("action", &self.action)
- .field("value_parser", &self.value_parser)
- .field("blacklist", &self.blacklist)
- .field("settings", &self.settings)
- .field("overrides", &self.overrides)
- .field("groups", &self.groups)
- .field("requires", &self.requires)
- .field("r_ifs", &self.r_ifs)
- .field("r_unless", &self.r_unless)
- .field("short", &self.short)
- .field("long", &self.long)
- .field("aliases", &self.aliases)
- .field("short_aliases", &self.short_aliases)
- .field("disp_ord", &self.disp_ord)
- .field("val_names", &self.val_names)
- .field("num_vals", &self.num_vals)
- .field("val_delim", &self.val_delim)
- .field("default_vals", &self.default_vals)
- .field("default_vals_ifs", &self.default_vals_ifs)
- .field("terminator", &self.terminator)
- .field("index", &self.index)
- .field("help_heading", &self.help_heading)
- .field("value_hint", &self.value_hint)
- .field("default_missing_vals", &self.default_missing_vals);
-
- #[cfg(feature = "env")]
- {
- ds = ds.field("env", &self.env);
- }
-
- ds.finish()
- }
-}
-
-// Flags
-#[cfg(test)]
-mod test {
- use super::Arg;
- use super::ArgAction;
-
- #[test]
- fn flag_display_long() {
- let mut f = Arg::new("flg").long("flag").action(ArgAction::SetTrue);
- f._build();
-
- assert_eq!(f.to_string(), "--flag");
- }
-
- #[test]
- fn flag_display_short() {
- let mut f2 = Arg::new("flg").short('f').action(ArgAction::SetTrue);
- f2._build();
-
- assert_eq!(f2.to_string(), "-f");
- }
-
- #[test]
- fn flag_display_count() {
- let mut f2 = Arg::new("flg").long("flag").action(ArgAction::Count);
- f2._build();
-
- assert_eq!(f2.to_string(), "--flag...");
- }
-
- #[test]
- fn flag_display_single_alias() {
- let mut f = Arg::new("flg")
- .long("flag")
- .visible_alias("als")
- .action(ArgAction::SetTrue);
- f._build();
-
- assert_eq!(f.to_string(), "--flag")
- }
-
- #[test]
- fn flag_display_multiple_aliases() {
- let mut f = Arg::new("flg").short('f').action(ArgAction::SetTrue);
- f.aliases = vec![
- ("alias_not_visible".into(), false),
- ("f2".into(), true),
- ("f3".into(), true),
- ("f4".into(), true),
- ];
- f._build();
-
- assert_eq!(f.to_string(), "-f");
- }
-
- #[test]
- fn flag_display_single_short_alias() {
- let mut f = Arg::new("flg").short('a').action(ArgAction::SetTrue);
- f.short_aliases = vec![('b', true)];
- f._build();
-
- assert_eq!(f.to_string(), "-a")
- }
-
- #[test]
- fn flag_display_multiple_short_aliases() {
- let mut f = Arg::new("flg").short('a').action(ArgAction::SetTrue);
- f.short_aliases = vec![('b', false), ('c', true), ('d', true), ('e', true)];
- f._build();
-
- assert_eq!(f.to_string(), "-a");
- }
-
- // Options
-
- #[test]
- fn option_display_multiple_occurrences() {
- let mut o = Arg::new("opt").long("option").action(ArgAction::Append);
- o._build();
-
- assert_eq!(o.to_string(), "--option <opt>");
- }
-
- #[test]
- fn option_display_multiple_values() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .num_args(1..);
- o._build();
-
- assert_eq!(o.to_string(), "--option <opt>...");
- }
-
- #[test]
- fn option_display_zero_or_more_values() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .num_args(0..);
- o._build();
-
- assert_eq!(o.to_string(), "--option [<opt>...]");
- }
-
- #[test]
- fn option_display_one_or_more_values() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .num_args(1..);
- o._build();
-
- assert_eq!(o.to_string(), "--option <opt>...");
- }
-
- #[test]
- fn option_display_zero_or_more_values_with_value_name() {
- let mut o = Arg::new("opt")
- .short('o')
- .action(ArgAction::Set)
- .num_args(0..)
- .value_names(["file"]);
- o._build();
-
- assert_eq!(o.to_string(), "-o [<file>...]");
- }
-
- #[test]
- fn option_display_one_or_more_values_with_value_name() {
- let mut o = Arg::new("opt")
- .short('o')
- .action(ArgAction::Set)
- .num_args(1..)
- .value_names(["file"]);
- o._build();
-
- assert_eq!(o.to_string(), "-o <file>...");
- }
-
- #[test]
- fn option_display_optional_value() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .num_args(0..=1);
- o._build();
-
- assert_eq!(o.to_string(), "--option [<opt>]");
- }
-
- #[test]
- fn option_display_value_names() {
- let mut o = Arg::new("opt")
- .short('o')
- .action(ArgAction::Set)
- .value_names(["file", "name"]);
- o._build();
-
- assert_eq!(o.to_string(), "-o <file> <name>");
- }
-
- #[test]
- fn option_display3() {
- let mut o = Arg::new("opt")
- .short('o')
- .num_args(1..)
- .action(ArgAction::Set)
- .value_names(["file", "name"]);
- o._build();
-
- assert_eq!(o.to_string(), "-o <file> <name>...");
- }
-
- #[test]
- fn option_display_single_alias() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .visible_alias("als");
- o._build();
-
- assert_eq!(o.to_string(), "--option <opt>");
- }
-
- #[test]
- fn option_display_multiple_aliases() {
- let mut o = Arg::new("opt")
- .long("option")
- .action(ArgAction::Set)
- .visible_aliases(["als2", "als3", "als4"])
- .alias("als_not_visible");
- o._build();
-
- assert_eq!(o.to_string(), "--option <opt>");
- }
-
- #[test]
- fn option_display_single_short_alias() {
- let mut o = Arg::new("opt")
- .short('a')
- .action(ArgAction::Set)
- .visible_short_alias('b');
- o._build();
-
- assert_eq!(o.to_string(), "-a <opt>");
- }
-
- #[test]
- fn option_display_multiple_short_aliases() {
- let mut o = Arg::new("opt")
- .short('a')
- .action(ArgAction::Set)
- .visible_short_aliases(['b', 'c', 'd'])
- .short_alias('e');
- o._build();
-
- assert_eq!(o.to_string(), "-a <opt>");
- }
-
- // Positionals
-
- #[test]
- fn positional_display_multiple_values() {
- let mut p = Arg::new("pos").index(1).num_args(1..);
- p._build();
-
- assert_eq!(p.to_string(), "[pos]...");
- }
-
- #[test]
- fn positional_display_multiple_values_required() {
- let mut p = Arg::new("pos").index(1).num_args(1..).required(true);
- p._build();
-
- assert_eq!(p.to_string(), "<pos>...");
- }
-
- #[test]
- fn positional_display_zero_or_more_values() {
- let mut p = Arg::new("pos").index(1).num_args(0..);
- p._build();
-
- assert_eq!(p.to_string(), "[pos]...");
- }
-
- #[test]
- fn positional_display_one_or_more_values() {
- let mut p = Arg::new("pos").index(1).num_args(1..);
- p._build();
-
- assert_eq!(p.to_string(), "[pos]...");
- }
-
- #[test]
- fn positional_display_one_or_more_values_required() {
- let mut p = Arg::new("pos").index(1).num_args(1..).required(true);
- p._build();
-
- assert_eq!(p.to_string(), "<pos>...");
- }
-
- #[test]
- fn positional_display_optional_value() {
- let mut p = Arg::new("pos")
- .index(1)
- .num_args(0..=1)
- .action(ArgAction::Set);
- p._build();
-
- assert_eq!(p.to_string(), "[pos]");
- }
-
- #[test]
- fn positional_display_multiple_occurrences() {
- let mut p = Arg::new("pos").index(1).action(ArgAction::Append);
- p._build();
-
- assert_eq!(p.to_string(), "[pos]...");
- }
-
- #[test]
- fn positional_display_multiple_occurrences_required() {
- let mut p = Arg::new("pos")
- .index(1)
- .action(ArgAction::Append)
- .required(true);
- p._build();
-
- assert_eq!(p.to_string(), "<pos>...");
- }
-
- #[test]
- fn positional_display_required() {
- let mut p = Arg::new("pos").index(1).required(true);
- p._build();
-
- assert_eq!(p.to_string(), "<pos>");
- }
-
- #[test]
- fn positional_display_val_names() {
- let mut p = Arg::new("pos").index(1).value_names(["file1", "file2"]);
- p._build();
-
- assert_eq!(p.to_string(), "[file1] [file2]");
- }
-
- #[test]
- fn positional_display_val_names_required() {
- let mut p = Arg::new("pos")
- .index(1)
- .value_names(["file1", "file2"])
- .required(true);
- p._build();
-
- assert_eq!(p.to_string(), "<file1> <file2>");
- }
-
- #[test]
- fn positional_display_val_names_req() {
- let mut p = Arg::new("pos")
- .index(1)
- .required(true)
- .value_names(["file1", "file2"]);
- p._build();
-
- assert_eq!(p.to_string(), "<file1> <file2>");
- }
-}
diff --git a/vendor/clap/src/builder/arg_group.rs b/vendor/clap/src/builder/arg_group.rs
deleted file mode 100644
index a6386a1c0..000000000
--- a/vendor/clap/src/builder/arg_group.rs
+++ /dev/null
@@ -1,596 +0,0 @@
-// Internal
-use crate::builder::IntoResettable;
-use crate::util::Id;
-
-/// Family of related [arguments].
-///
-/// By placing arguments in a logical group, you can create easier requirement and
-/// exclusion rules instead of having to list each argument individually, or when you want a rule
-/// to apply "any but not all" arguments.
-///
-/// For instance, you can make an entire `ArgGroup` required. If [`ArgGroup::multiple(true)`] is
-/// set, this means that at least one argument from that group must be present. If
-/// [`ArgGroup::multiple(false)`] is set (the default), one and *only* one must be present.
-///
-/// You can also do things such as name an entire `ArgGroup` as a [conflict] or [requirement] for
-/// another argument, meaning any of the arguments that belong to that group will cause a failure
-/// if present, or must be present respectively.
-///
-/// Perhaps the most common use of `ArgGroup`s is to require one and *only* one argument to be
-/// present out of a given set. Imagine that you had multiple arguments, and you want one of them
-/// to be required, but making all of them required isn't feasible because perhaps they conflict
-/// with each other. For example, lets say that you were building an application where one could
-/// set a given version number by supplying a string with an option argument, i.e.
-/// `--set-ver v1.2.3`, you also wanted to support automatically using a previous version number
-/// and simply incrementing one of the three numbers. So you create three flags `--major`,
-/// `--minor`, and `--patch`. All of these arguments shouldn't be used at one time but you want to
-/// specify that *at least one* of them is used. For this, you can create a group.
-///
-/// Finally, you may use `ArgGroup`s to pull a value from a group of arguments when you don't care
-/// exactly which argument was actually used at runtime.
-///
-/// # Examples
-///
-/// The following example demonstrates using an `ArgGroup` to ensure that one, and only one, of
-/// the arguments from the specified group is present at runtime.
-///
-/// ```rust
-/// # use clap::{Command, arg, ArgGroup, error::ErrorKind};
-/// let result = Command::new("cmd")
-/// .arg(arg!(--"set-ver" <ver> "set the version manually"))
-/// .arg(arg!(--major "auto increase major"))
-/// .arg(arg!(--minor "auto increase minor"))
-/// .arg(arg!(--patch "auto increase patch"))
-/// .group(ArgGroup::new("vers")
-/// .args(["set-ver", "major", "minor", "patch"])
-/// .required(true))
-/// .try_get_matches_from(vec!["cmd", "--major", "--patch"]);
-/// // Because we used two args in the group it's an error
-/// assert!(result.is_err());
-/// let err = result.unwrap_err();
-/// assert_eq!(err.kind(), ErrorKind::ArgumentConflict);
-/// ```
-///
-/// This next example shows a passing parse of the same scenario
-/// ```rust
-/// # use clap::{Command, arg, ArgGroup, Id};
-/// let result = Command::new("cmd")
-/// .arg(arg!(--"set-ver" <ver> "set the version manually"))
-/// .arg(arg!(--major "auto increase major"))
-/// .arg(arg!(--minor "auto increase minor"))
-/// .arg(arg!(--patch "auto increase patch"))
-/// .group(ArgGroup::new("vers")
-/// .args(["set-ver", "major", "minor","patch"])
-/// .required(true))
-/// .try_get_matches_from(vec!["cmd", "--major"]);
-/// assert!(result.is_ok());
-/// let matches = result.unwrap();
-/// // We may not know which of the args was used, so we can test for the group...
-/// assert!(matches.contains_id("vers"));
-/// // We can also ask the group which arg was used
-/// assert_eq!(matches
-/// .get_one::<Id>("vers")
-/// .expect("`vers` is required")
-/// .as_str(),
-/// "major"
-/// );
-/// // we could also alternatively check each arg individually (not shown here)
-/// ```
-/// [`ArgGroup::multiple(true)`]: ArgGroup::multiple()
-///
-/// [`ArgGroup::multiple(false)`]: ArgGroup::multiple()
-/// [arguments]: crate::Arg
-/// [conflict]: crate::Arg::conflicts_with()
-/// [requirement]: crate::Arg::requires()
-#[derive(Default, Clone, Debug, PartialEq, Eq)]
-pub struct ArgGroup {
- pub(crate) id: Id,
- pub(crate) args: Vec<Id>,
- pub(crate) required: bool,
- pub(crate) requires: Vec<Id>,
- pub(crate) conflicts: Vec<Id>,
- pub(crate) multiple: bool,
-}
-
-/// # Builder
-impl ArgGroup {
- /// Create a `ArgGroup` using a unique name.
- ///
- /// The name will be used to get values from the group or refer to the group inside of conflict
- /// and requirement rules.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, ArgGroup};
- /// ArgGroup::new("config")
- /// # ;
- /// ```
- pub fn new(id: impl Into<Id>) -> Self {
- ArgGroup::default().id(id)
- }
-
- /// Sets the group name.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, ArgGroup};
- /// ArgGroup::default().id("config")
- /// # ;
- /// ```
- #[must_use]
- pub fn id(mut self, id: impl Into<Id>) -> Self {
- self.id = id.into();
- self
- }
-
- /// Adds an [argument] to this group by name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, ArgAction};
- /// let m = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .arg("flag")
- /// .arg("color"))
- /// .get_matches_from(vec!["myprog", "-f"]);
- /// // maybe we don't know which of the two flags was used...
- /// assert!(m.contains_id("req_flags"));
- /// // but we can also check individually if needed
- /// assert!(m.contains_id("flag"));
- /// ```
- /// [argument]: crate::Arg
- #[must_use]
- pub fn arg(mut self, arg_id: impl IntoResettable<Id>) -> Self {
- if let Some(arg_id) = arg_id.into_resettable().into_option() {
- self.args.push(arg_id);
- } else {
- self.args.clear();
- }
- self
- }
-
- /// Adds multiple [arguments] to this group by name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, ArgAction};
- /// let m = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"]))
- /// .get_matches_from(vec!["myprog", "-f"]);
- /// // maybe we don't know which of the two flags was used...
- /// assert!(m.contains_id("req_flags"));
- /// // but we can also check individually if needed
- /// assert!(m.contains_id("flag"));
- /// ```
- /// [arguments]: crate::Arg
- #[must_use]
- pub fn args(mut self, ns: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- for n in ns {
- self = self.arg(n);
- }
- self
- }
-
- /// Getters for all args. It will return a vector of `Id`
- ///
- /// # Example
- ///
- /// ```rust
- /// # use clap::{ArgGroup};
- /// let args: Vec<&str> = vec!["a1".into(), "a4".into()];
- /// let grp = ArgGroup::new("program").args(&args);
- ///
- /// for (pos, arg) in grp.get_args().enumerate() {
- /// assert_eq!(*arg, args[pos]);
- /// }
- /// ```
- pub fn get_args(&self) -> impl Iterator<Item = &Id> {
- self.args.iter()
- }
-
- /// Allows more than one of the [`Arg`]s in this group to be used. (Default: `false`)
- ///
- /// # Examples
- ///
- /// Notice in this example we use *both* the `-f` and `-c` flags which are both part of the
- /// group
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, ArgAction};
- /// let m = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .multiple(true))
- /// .get_matches_from(vec!["myprog", "-f", "-c"]);
- /// // maybe we don't know which of the two flags was used...
- /// assert!(m.contains_id("req_flags"));
- /// ```
- /// In this next example, we show the default behavior (i.e. `multiple(false)) which will throw
- /// an error if more than one of the args in the group was used.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"]))
- /// .try_get_matches_from(vec!["myprog", "-f", "-c"]);
- /// // Because we used both args in the group it's an error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::ArgumentConflict);
- /// ```
- ///
- /// [`Arg`]: crate::Arg
- #[inline]
- #[must_use]
- pub fn multiple(mut self, yes: bool) -> Self {
- self.multiple = yes;
- self
- }
-
- /// Return true if the group allows more than one of the arguments
- /// in this group to be used. (Default: `false`)
- ///
- /// # Example
- ///
- /// ```rust
- /// # use clap::{ArgGroup};
- /// let mut group = ArgGroup::new("myprog")
- /// .args(["f", "c"])
- /// .multiple(true);
- ///
- /// assert!(group.is_multiple());
- /// ```
- pub fn is_multiple(&mut self) -> bool {
- self.multiple
- }
-
- /// Require an argument from the group to be present when parsing.
- ///
- /// This is unless conflicting with another argument. A required group will be displayed in
- /// the usage string of the application in the format `<arg|arg2|arg3>`.
- ///
- /// **NOTE:** This setting only applies to the current [`Command`] / [`Subcommand`]s, and not
- /// globally.
- ///
- /// **NOTE:** By default, [`ArgGroup::multiple`] is set to `false` which when combined with
- /// `ArgGroup::required(true)` states, "One and *only one* arg must be used from this group.
- /// Use of more than one arg is an error." Vice setting `ArgGroup::multiple(true)` which
- /// states, '*At least* one arg from this group must be used. Using multiple is OK."
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .required(true))
- /// .try_get_matches_from(vec!["myprog"]);
- /// // Because we didn't use any of the args in the group, it's an error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- ///
- /// [`Subcommand`]: crate::Subcommand
- /// [`ArgGroup::multiple`]: ArgGroup::multiple()
- /// [`Command`]: crate::Command
- #[inline]
- #[must_use]
- pub fn required(mut self, yes: bool) -> Self {
- self.required = yes;
- self
- }
-
- /// Specify an argument or group that must be present when this group is.
- ///
- /// This is not to be confused with a [required group]. Requirement rules function just like
- /// [argument requirement rules], you can name other arguments or groups that must be present
- /// when any one of the arguments from this group is used.
- ///
- /// **NOTE:** The name provided may be an argument or group name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("debug")
- /// .short('d')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .requires("debug"))
- /// .try_get_matches_from(vec!["myprog", "-c"]);
- /// // because we used an arg from the group, and the group requires "-d" to be used, it's an
- /// // error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required group]: ArgGroup::required()
- /// [argument requirement rules]: crate::Arg::requires()
- #[must_use]
- pub fn requires(mut self, id: impl IntoResettable<Id>) -> Self {
- if let Some(id) = id.into_resettable().into_option() {
- self.requires.push(id);
- } else {
- self.requires.clear();
- }
- self
- }
-
- /// Specify arguments or groups that must be present when this group is.
- ///
- /// This is not to be confused with a [required group]. Requirement rules function just like
- /// [argument requirement rules], you can name other arguments or groups that must be present
- /// when one of the arguments from this group is used.
- ///
- /// **NOTE:** The names provided may be an argument or group name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("debug")
- /// .short('d')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("verb")
- /// .short('v')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .requires_all(["debug", "verb"]))
- /// .try_get_matches_from(vec!["myprog", "-c", "-d"]);
- /// // because we used an arg from the group, and the group requires "-d" and "-v" to be used,
- /// // yet we only used "-d" it's an error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::MissingRequiredArgument);
- /// ```
- /// [required group]: ArgGroup::required()
- /// [argument requirement rules]: crate::Arg::requires_ifs()
- #[must_use]
- pub fn requires_all(mut self, ns: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- for n in ns {
- self = self.requires(n);
- }
- self
- }
-
- /// Specify an argument or group that must **not** be present when this group is.
- ///
- /// Exclusion (aka conflict) rules function just like [argument exclusion rules], you can name
- /// other arguments or groups that must *not* be present when one of the arguments from this
- /// group are used.
- ///
- /// **NOTE:** The name provided may be an argument, or group name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("debug")
- /// .short('d')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .conflicts_with("debug"))
- /// .try_get_matches_from(vec!["myprog", "-c", "-d"]);
- /// // because we used an arg from the group, and the group conflicts with "-d", it's an error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::ArgumentConflict);
- /// ```
- /// [argument exclusion rules]: crate::Arg::conflicts_with()
- #[must_use]
- pub fn conflicts_with(mut self, id: impl IntoResettable<Id>) -> Self {
- if let Some(id) = id.into_resettable().into_option() {
- self.conflicts.push(id);
- } else {
- self.conflicts.clear();
- }
- self
- }
-
- /// Specify arguments or groups that must **not** be present when this group is.
- ///
- /// Exclusion rules function just like [argument exclusion rules], you can name other arguments
- /// or groups that must *not* be present when one of the arguments from this group are used.
- ///
- /// **NOTE:** The names provided may be an argument, or group name
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgGroup, error::ErrorKind, ArgAction};
- /// let result = Command::new("myprog")
- /// .arg(Arg::new("flag")
- /// .short('f')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("color")
- /// .short('c')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("debug")
- /// .short('d')
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("verb")
- /// .short('v')
- /// .action(ArgAction::SetTrue))
- /// .group(ArgGroup::new("req_flags")
- /// .args(["flag", "color"])
- /// .conflicts_with_all(["debug", "verb"]))
- /// .try_get_matches_from(vec!["myprog", "-c", "-v"]);
- /// // because we used an arg from the group, and the group conflicts with either "-v" or "-d"
- /// // it's an error
- /// assert!(result.is_err());
- /// let err = result.unwrap_err();
- /// assert_eq!(err.kind(), ErrorKind::ArgumentConflict);
- /// ```
- ///
- /// [argument exclusion rules]: crate::Arg::conflicts_with_all()
- #[must_use]
- pub fn conflicts_with_all(mut self, ns: impl IntoIterator<Item = impl Into<Id>>) -> Self {
- for n in ns {
- self = self.conflicts_with(n);
- }
- self
- }
-}
-
-/// # Reflection
-impl ArgGroup {
- /// Get the name of the group
- #[inline]
- pub fn get_id(&self) -> &Id {
- &self.id
- }
-
- /// Reports whether [`ArgGroup::required`] is set
- #[inline]
- pub fn is_required_set(&self) -> bool {
- self.required
- }
-}
-
-impl From<&'_ ArgGroup> for ArgGroup {
- fn from(g: &ArgGroup) -> Self {
- g.clone()
- }
-}
-
-#[cfg(test)]
-mod test {
- use super::*;
-
- #[test]
- fn groups() {
- let g = ArgGroup::new("test")
- .arg("a1")
- .arg("a4")
- .args(["a2", "a3"])
- .required(true)
- .conflicts_with("c1")
- .conflicts_with_all(["c2", "c3"])
- .conflicts_with("c4")
- .requires("r1")
- .requires_all(["r2", "r3"])
- .requires("r4");
-
- let args: Vec<Id> = vec!["a1".into(), "a4".into(), "a2".into(), "a3".into()];
- let reqs: Vec<Id> = vec!["r1".into(), "r2".into(), "r3".into(), "r4".into()];
- let confs: Vec<Id> = vec!["c1".into(), "c2".into(), "c3".into(), "c4".into()];
-
- assert_eq!(g.args, args);
- assert_eq!(g.requires, reqs);
- assert_eq!(g.conflicts, confs);
- }
-
- #[test]
- fn test_from() {
- let g = ArgGroup::new("test")
- .arg("a1")
- .arg("a4")
- .args(["a2", "a3"])
- .required(true)
- .conflicts_with("c1")
- .conflicts_with_all(["c2", "c3"])
- .conflicts_with("c4")
- .requires("r1")
- .requires_all(["r2", "r3"])
- .requires("r4");
-
- let args: Vec<Id> = vec!["a1".into(), "a4".into(), "a2".into(), "a3".into()];
- let reqs: Vec<Id> = vec!["r1".into(), "r2".into(), "r3".into(), "r4".into()];
- let confs: Vec<Id> = vec!["c1".into(), "c2".into(), "c3".into(), "c4".into()];
-
- let g2 = ArgGroup::from(&g);
- assert_eq!(g2.args, args);
- assert_eq!(g2.requires, reqs);
- assert_eq!(g2.conflicts, confs);
- }
-
- // This test will *fail to compile* if ArgGroup is not Send + Sync
- #[test]
- fn arg_group_send_sync() {
- fn foo<T: Send + Sync>(_: T) {}
- foo(ArgGroup::new("test"))
- }
-
- #[test]
- fn arg_group_expose_is_multiple_helper() {
- let args: Vec<Id> = vec!["a1".into(), "a4".into()];
-
- let mut grp_multiple = ArgGroup::new("test_multiple").args(&args).multiple(true);
- assert!(grp_multiple.is_multiple());
-
- let mut grp_not_multiple = ArgGroup::new("test_multiple").args(&args).multiple(false);
- assert!(!grp_not_multiple.is_multiple());
- }
-
- #[test]
- fn arg_group_expose_get_args_helper() {
- let args: Vec<Id> = vec!["a1".into(), "a4".into()];
- let grp = ArgGroup::new("program").args(&args);
-
- for (pos, arg) in grp.get_args().enumerate() {
- assert_eq!(*arg, args[pos]);
- }
- }
-}
diff --git a/vendor/clap/src/builder/arg_predicate.rs b/vendor/clap/src/builder/arg_predicate.rs
deleted file mode 100644
index bc79a11b7..000000000
--- a/vendor/clap/src/builder/arg_predicate.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-use crate::builder::OsStr;
-
-/// Operations to perform on argument values
-///
-/// These do not apply to [`ValueSource::DefaultValue`][crate::parser::ValueSource::DefaultValue]
-#[derive(Clone, Debug, PartialEq, Eq)]
-#[cfg_attr(feature = "unstable-v5", non_exhaustive)]
-pub enum ArgPredicate {
- /// Is the argument present?
- IsPresent,
- /// Does the argument match the specified value?
- Equals(OsStr),
-}
-
-impl<S: Into<OsStr>> From<S> for ArgPredicate {
- fn from(other: S) -> Self {
- Self::Equals(other.into())
- }
-}
diff --git a/vendor/clap/src/builder/arg_settings.rs b/vendor/clap/src/builder/arg_settings.rs
deleted file mode 100644
index 0f63e4396..000000000
--- a/vendor/clap/src/builder/arg_settings.rs
+++ /dev/null
@@ -1,145 +0,0 @@
-// Std
-use std::ops::BitOr;
-
-// Third party
-use bitflags::bitflags;
-
-#[allow(unused)]
-use crate::Arg;
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub(crate) struct ArgFlags(Flags);
-
-impl Default for ArgFlags {
- fn default() -> Self {
- Self::empty()
- }
-}
-
-/// Various settings that apply to arguments and may be set, unset, and checked via getter/setter
-/// methods [`Arg::setting`], [`Arg::unset_setting`], and [`Arg::is_set`]. This is what the
-/// [`Arg`] methods which accept a `bool` use internally.
-///
-/// [`Arg`]: crate::Arg
-/// [`Arg::setting`]: crate::Arg::setting()
-/// [`Arg::unset_setting`]: crate::Arg::unset_setting()
-/// [`Arg::is_set`]: crate::Arg::is_set()
-#[derive(Debug, PartialEq, Copy, Clone)]
-#[non_exhaustive]
-pub(crate) enum ArgSettings {
- Required,
- Global,
- Hidden,
- NextLineHelp,
- HidePossibleValues,
- AllowHyphenValues,
- AllowNegativeNumbers,
- RequireEquals,
- Last,
- TrailingVarArg,
- HideDefaultValue,
- IgnoreCase,
- #[cfg(feature = "env")]
- HideEnv,
- #[cfg(feature = "env")]
- HideEnvValues,
- HiddenShortHelp,
- HiddenLongHelp,
- Exclusive,
-}
-
-bitflags! {
- struct Flags: u32 {
- const REQUIRED = 1;
- const GLOBAL = 1 << 3;
- const HIDDEN = 1 << 4;
- const TRAILING_VARARG = 1 << 5;
- const ALLOW_NEG_NUMS = 1 << 6;
- const NEXT_LINE_HELP = 1 << 7;
- const DELIM_NOT_SET = 1 << 10;
- const HIDE_POS_VALS = 1 << 11;
- const ALLOW_TAC_VALS = 1 << 12;
- const REQUIRE_EQUALS = 1 << 13;
- const LAST = 1 << 14;
- const HIDE_DEFAULT_VAL = 1 << 15;
- const CASE_INSENSITIVE = 1 << 16;
- #[cfg(feature = "env")]
- const HIDE_ENV_VALS = 1 << 17;
- const HIDDEN_SHORT_H = 1 << 18;
- const HIDDEN_LONG_H = 1 << 19;
- #[cfg(feature = "env")]
- const HIDE_ENV = 1 << 21;
- const EXCLUSIVE = 1 << 23;
- const NO_OP = 0;
- }
-}
-
-impl_settings! { ArgSettings, ArgFlags,
- Required => Flags::REQUIRED,
- Global => Flags::GLOBAL,
- Hidden => Flags::HIDDEN,
- NextLineHelp => Flags::NEXT_LINE_HELP,
- HidePossibleValues => Flags::HIDE_POS_VALS,
- AllowHyphenValues => Flags::ALLOW_TAC_VALS,
- AllowNegativeNumbers => Flags::ALLOW_NEG_NUMS,
- RequireEquals => Flags::REQUIRE_EQUALS,
- Last => Flags::LAST,
- TrailingVarArg => Flags::TRAILING_VARARG,
- IgnoreCase => Flags::CASE_INSENSITIVE,
- #[cfg(feature = "env")]
- HideEnv => Flags::HIDE_ENV,
- #[cfg(feature = "env")]
- HideEnvValues => Flags::HIDE_ENV_VALS,
- HideDefaultValue => Flags::HIDE_DEFAULT_VAL,
- HiddenShortHelp => Flags::HIDDEN_SHORT_H,
- HiddenLongHelp => Flags::HIDDEN_LONG_H,
- Exclusive => Flags::EXCLUSIVE
-}
-
-#[cfg(test)]
-mod test {
- use super::*;
- use crate::Arg;
-
- #[test]
- fn setting() {
- let m = Arg::new("setting").setting(ArgSettings::Required);
- assert!(m.is_required_set());
- }
-
- #[test]
- fn unset_setting() {
- let m = Arg::new("unset_setting").setting(ArgSettings::Required);
- assert!(m.is_required_set());
-
- let m = m.unset_setting(ArgSettings::Required);
- assert!(!m.is_required_set(), "{:#?}", m);
- }
-
- #[test]
- fn setting_bitor() {
- let m = Arg::new("setting_bitor")
- .setting(ArgSettings::Required | ArgSettings::Hidden | ArgSettings::Last);
-
- assert!(m.is_required_set());
- assert!(m.is_hide_set());
- assert!(m.is_last_set());
- }
-
- #[test]
- fn unset_setting_bitor() {
- let m = Arg::new("unset_setting_bitor")
- .setting(ArgSettings::Required)
- .setting(ArgSettings::Hidden)
- .setting(ArgSettings::Last);
-
- assert!(m.is_required_set());
- assert!(m.is_hide_set());
- assert!(m.is_last_set());
-
- let m = m.unset_setting(ArgSettings::Required | ArgSettings::Hidden | ArgSettings::Last);
- assert!(!m.is_required_set(), "{:#?}", m);
- assert!(!m.is_hide_set(), "{:#?}", m);
- assert!(!m.is_last_set(), "{:#?}", m);
- }
-}
diff --git a/vendor/clap/src/builder/command.rs b/vendor/clap/src/builder/command.rs
deleted file mode 100644
index fc2c983e4..000000000
--- a/vendor/clap/src/builder/command.rs
+++ /dev/null
@@ -1,4703 +0,0 @@
-#![cfg_attr(not(feature = "usage"), allow(unused_mut))]
-
-// Std
-use std::env;
-use std::ffi::OsString;
-use std::fmt;
-use std::io;
-use std::ops::Index;
-use std::path::Path;
-
-// Internal
-use crate::builder::app_settings::{AppFlags, AppSettings};
-use crate::builder::arg_settings::ArgSettings;
-use crate::builder::ArgAction;
-use crate::builder::IntoResettable;
-use crate::builder::PossibleValue;
-use crate::builder::Str;
-use crate::builder::StyledStr;
-use crate::builder::{Arg, ArgGroup, ArgPredicate};
-use crate::error::ErrorKind;
-use crate::error::Result as ClapResult;
-use crate::mkeymap::MKeyMap;
-use crate::output::fmt::Stream;
-use crate::output::{fmt::Colorizer, write_help, Usage};
-use crate::parser::{ArgMatcher, ArgMatches, Parser};
-use crate::util::ChildGraph;
-use crate::util::FlatMap;
-use crate::util::{color::ColorChoice, Id};
-use crate::{Error, INTERNAL_ERROR_MSG};
-
-#[cfg(debug_assertions)]
-use crate::builder::debug_asserts::assert_app;
-
-/// Build a command-line interface.
-///
-/// This includes defining arguments, subcommands, parser behavior, and help output.
-/// Once all configuration is complete,
-/// the [`Command::get_matches`] family of methods starts the runtime-parsing
-/// process. These methods then return information about the user supplied
-/// arguments (or lack thereof).
-///
-/// When deriving a [`Parser`][crate::Parser], you can use
-/// [`CommandFactory::command`][crate::CommandFactory::command] to access the
-/// `Command`.
-///
-/// - [Basic API][crate::Command#basic-api]
-/// - [Application-wide Settings][crate::Command#application-wide-settings]
-/// - [Command-specific Settings][crate::Command#command-specific-settings]
-/// - [Subcommand-specific Settings][crate::Command#subcommand-specific-settings]
-/// - [Reflection][crate::Command#reflection]
-///
-/// # Examples
-///
-/// ```no_run
-/// # use clap::{Command, Arg};
-/// let m = Command::new("My Program")
-/// .author("Me, me@mail.com")
-/// .version("1.0.2")
-/// .about("Explains in brief what the program does")
-/// .arg(
-/// Arg::new("in_file")
-/// )
-/// .after_help("Longer explanation to appear after the options when \
-/// displaying the help information from --help or -h")
-/// .get_matches();
-///
-/// // Your program logic starts here...
-/// ```
-/// [`Command::get_matches`]: Command::get_matches()
-#[derive(Debug, Clone)]
-pub struct Command {
- name: Str,
- long_flag: Option<Str>,
- short_flag: Option<char>,
- display_name: Option<String>,
- bin_name: Option<String>,
- author: Option<Str>,
- version: Option<Str>,
- long_version: Option<Str>,
- about: Option<StyledStr>,
- long_about: Option<StyledStr>,
- before_help: Option<StyledStr>,
- before_long_help: Option<StyledStr>,
- after_help: Option<StyledStr>,
- after_long_help: Option<StyledStr>,
- aliases: Vec<(Str, bool)>, // (name, visible)
- short_flag_aliases: Vec<(char, bool)>, // (name, visible)
- long_flag_aliases: Vec<(Str, bool)>, // (name, visible)
- usage_str: Option<StyledStr>,
- usage_name: Option<String>,
- help_str: Option<StyledStr>,
- disp_ord: Option<usize>,
- term_w: Option<usize>,
- max_w: Option<usize>,
- #[cfg(feature = "help")]
- template: Option<StyledStr>,
- settings: AppFlags,
- g_settings: AppFlags,
- args: MKeyMap,
- subcommands: Vec<Command>,
- replacers: FlatMap<Str, Vec<Str>>,
- groups: Vec<ArgGroup>,
- current_help_heading: Option<Str>,
- current_disp_ord: Option<usize>,
- subcommand_value_name: Option<Str>,
- subcommand_heading: Option<Str>,
- external_value_parser: Option<super::ValueParser>,
- long_help_exists: bool,
-}
-
-/// # Basic API
-impl Command {
- /// Creates a new instance of an `Command`.
- ///
- /// It is common, but not required, to use binary name as the `name`. This
- /// name will only be displayed to the user when they request to print
- /// version or help and usage information.
- ///
- /// See also [`command!`](crate::command!) and [`crate_name!`](crate::crate_name!).
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("My Program")
- /// # ;
- /// ```
- pub fn new(name: impl Into<Str>) -> Self {
- /// The actual implementation of `new`, non-generic to save code size.
- ///
- /// If we don't do this rustc will unnecessarily generate multiple versions
- /// of this code.
- fn new_inner(name: Str) -> Command {
- Command {
- name,
- ..Default::default()
- }
- }
-
- new_inner(name.into())
- }
-
- /// Adds an [argument] to the list of valid possibilities.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, arg, Arg};
- /// Command::new("myprog")
- /// // Adding a single "flag" argument with a short and help text, using Arg::new()
- /// .arg(
- /// Arg::new("debug")
- /// .short('d')
- /// .help("turns on debugging mode")
- /// )
- /// // Adding a single "option" argument with a short, a long, and help text using the less
- /// // verbose Arg::from()
- /// .arg(
- /// arg!(-c --config <CONFIG> "Optionally sets a config file to use")
- /// )
- /// # ;
- /// ```
- /// [argument]: Arg
- #[must_use]
- pub fn arg(mut self, a: impl Into<Arg>) -> Self {
- let arg = a.into();
- self.arg_internal(arg);
- self
- }
-
- fn arg_internal(&mut self, mut arg: Arg) {
- if let Some(current_disp_ord) = self.current_disp_ord.as_mut() {
- if !arg.is_positional() {
- let current = *current_disp_ord;
- arg.disp_ord.get_or_insert(current);
- *current_disp_ord = current + 1;
- }
- }
-
- arg.help_heading
- .get_or_insert_with(|| self.current_help_heading.clone());
- self.args.push(arg);
- }
-
- /// Adds multiple [arguments] to the list of valid possibilities.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, arg, Arg};
- /// Command::new("myprog")
- /// .args([
- /// arg!("[debug] -d 'turns on debugging info'"),
- /// Arg::new("input").help("the input file to use")
- /// ])
- /// # ;
- /// ```
- /// [arguments]: Arg
- #[must_use]
- pub fn args(mut self, args: impl IntoIterator<Item = impl Into<Arg>>) -> Self {
- for arg in args {
- self = self.arg(arg);
- }
- self
- }
-
- /// Allows one to mutate an [`Arg`] after it's been added to a [`Command`].
- ///
- /// This can be useful for modifying the auto-generated help or version arguments.
- ///
- /// # Panics
- ///
- /// If the argument is undefined
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- ///
- /// let mut cmd = Command::new("foo")
- /// .arg(Arg::new("bar")
- /// .short('b')
- /// .action(ArgAction::SetTrue))
- /// .mut_arg("bar", |a| a.short('B'));
- ///
- /// let res = cmd.try_get_matches_from_mut(vec!["foo", "-b"]);
- ///
- /// // Since we changed `bar`'s short to "B" this should err as there
- /// // is no `-b` anymore, only `-B`
- ///
- /// assert!(res.is_err());
- ///
- /// let res = cmd.try_get_matches_from_mut(vec!["foo", "-B"]);
- /// assert!(res.is_ok());
- /// ```
- #[must_use]
- #[cfg_attr(debug_assertions, track_caller)]
- pub fn mut_arg<F>(mut self, arg_id: impl AsRef<str>, f: F) -> Self
- where
- F: FnOnce(Arg) -> Arg,
- {
- let id = arg_id.as_ref();
- let a = self
- .args
- .remove_by_name(id)
- .unwrap_or_else(|| panic!("Argument `{}` is undefined", id));
-
- self.args.push(f(a));
- self
- }
-
- /// Allows one to mutate a [`Command`] after it's been added as a subcommand.
- ///
- /// This can be useful for modifying auto-generated arguments of nested subcommands with
- /// [`Command::mut_arg`].
- ///
- /// # Panics
- ///
- /// If the subcommand is undefined
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- ///
- /// let mut cmd = Command::new("foo")
- /// .subcommand(Command::new("bar"))
- /// .mut_subcommand("bar", |subcmd| subcmd.disable_help_flag(true));
- ///
- /// let res = cmd.try_get_matches_from_mut(vec!["foo", "bar", "--help"]);
- ///
- /// // Since we disabled the help flag on the "bar" subcommand, this should err.
- ///
- /// assert!(res.is_err());
- ///
- /// let res = cmd.try_get_matches_from_mut(vec!["foo", "bar"]);
- /// assert!(res.is_ok());
- /// ```
- #[must_use]
- pub fn mut_subcommand<F>(mut self, name: impl AsRef<str>, f: F) -> Self
- where
- F: FnOnce(Self) -> Self,
- {
- let name = name.as_ref();
- let pos = self.subcommands.iter().position(|s| s.name == name);
-
- let subcmd = if let Some(idx) = pos {
- self.subcommands.remove(idx)
- } else {
- panic!("Command `{}` is undefined", name)
- };
-
- self.subcommands.push(f(subcmd));
- self
- }
-
- /// Adds an [`ArgGroup`] to the application.
- ///
- /// [`ArgGroup`]s are a family of related arguments.
- /// By placing them in a logical group, you can build easier requirement and exclusion rules.
- ///
- /// Example use cases:
- /// - Make an entire [`ArgGroup`] required, meaning that one (and *only*
- /// one) argument from that group must be present at runtime.
- /// - Name an [`ArgGroup`] as a conflict to another argument.
- /// Meaning any of the arguments that belong to that group will cause a failure if present with
- /// the conflicting argument.
- /// - Ensure exclusion between arguments.
- /// - Extract a value from a group instead of determining exactly which argument was used.
- ///
- /// # Examples
- ///
- /// The following example demonstrates using an [`ArgGroup`] to ensure that one, and only one,
- /// of the arguments from the specified group is present at runtime.
- ///
- /// ```no_run
- /// # use clap::{Command, arg, ArgGroup};
- /// Command::new("cmd")
- /// .arg(arg!("--set-ver [ver] 'set the version manually'"))
- /// .arg(arg!("--major 'auto increase major'"))
- /// .arg(arg!("--minor 'auto increase minor'"))
- /// .arg(arg!("--patch 'auto increase patch'"))
- /// .group(ArgGroup::new("vers")
- /// .args(["set-ver", "major", "minor","patch"])
- /// .required(true))
- /// # ;
- /// ```
- #[inline]
- #[must_use]
- pub fn group(mut self, group: impl Into<ArgGroup>) -> Self {
- self.groups.push(group.into());
- self
- }
-
- /// Adds multiple [`ArgGroup`]s to the [`Command`] at once.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, arg, ArgGroup};
- /// Command::new("cmd")
- /// .arg(arg!("--set-ver [ver] 'set the version manually'"))
- /// .arg(arg!("--major 'auto increase major'"))
- /// .arg(arg!("--minor 'auto increase minor'"))
- /// .arg(arg!("--patch 'auto increase patch'"))
- /// .arg(arg!("-c [FILE] 'a config file'"))
- /// .arg(arg!("-i [IFACE] 'an interface'"))
- /// .groups([
- /// ArgGroup::new("vers")
- /// .args(["set-ver", "major", "minor","patch"])
- /// .required(true),
- /// ArgGroup::new("input")
- /// .args(["c", "i"])
- /// ])
- /// # ;
- /// ```
- #[must_use]
- pub fn groups(mut self, groups: impl IntoIterator<Item = impl Into<ArgGroup>>) -> Self {
- for g in groups.into_iter() {
- self = self.group(g.into());
- }
- self
- }
-
- /// Adds a subcommand to the list of valid possibilities.
- ///
- /// Subcommands are effectively sub-[`Command`]s, because they can contain their own arguments,
- /// subcommands, version, usage, etc. They also function just like [`Command`]s, in that they get
- /// their own auto generated help, version, and usage.
- ///
- /// A subcommand's [`Command::name`] will be used for:
- /// - The argument the user passes in
- /// - Programmatically looking up the subcommand
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, arg};
- /// Command::new("myprog")
- /// .subcommand(Command::new("config")
- /// .about("Controls configuration features")
- /// .arg(arg!("<config> 'Required configuration file to use'")))
- /// # ;
- /// ```
- #[inline]
- #[must_use]
- pub fn subcommand(self, subcmd: impl Into<Command>) -> Self {
- let subcmd = subcmd.into();
- self.subcommand_internal(subcmd)
- }
-
- fn subcommand_internal(mut self, mut subcmd: Self) -> Self {
- if let Some(current_disp_ord) = self.current_disp_ord.as_mut() {
- let current = *current_disp_ord;
- subcmd.disp_ord.get_or_insert(current);
- *current_disp_ord = current + 1;
- }
- self.subcommands.push(subcmd);
- self
- }
-
- /// Adds multiple subcommands to the list of valid possibilities.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, };
- /// # Command::new("myprog")
- /// .subcommands( [
- /// Command::new("config").about("Controls configuration functionality")
- /// .arg(Arg::new("config_file")),
- /// Command::new("debug").about("Controls debug functionality")])
- /// # ;
- /// ```
- /// [`IntoIterator`]: std::iter::IntoIterator
- #[must_use]
- pub fn subcommands(mut self, subcmds: impl IntoIterator<Item = impl Into<Self>>) -> Self {
- for subcmd in subcmds {
- self = self.subcommand(subcmd);
- }
- self
- }
-
- /// Catch problems earlier in the development cycle.
- ///
- /// Most error states are handled as asserts under the assumption they are programming mistake
- /// and not something to handle at runtime. Rather than relying on tests (manual or automated)
- /// that exhaustively test your CLI to ensure the asserts are evaluated, this will run those
- /// asserts in a way convenient for running as a test.
- ///
- /// **Note::** This will not help with asserts in [`ArgMatches`], those will need exhaustive
- /// testing of your CLI.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// fn cmd() -> Command {
- /// Command::new("foo")
- /// .arg(
- /// Arg::new("bar").short('b').action(ArgAction::SetTrue)
- /// )
- /// }
- ///
- /// #[test]
- /// fn verify_app() {
- /// cmd().debug_assert();
- /// }
- ///
- /// fn main() {
- /// let m = cmd().get_matches_from(vec!["foo", "-b"]);
- /// println!("{}", m.get_flag("bar"));
- /// }
- /// ```
- pub fn debug_assert(mut self) {
- self.build();
- }
-
- /// Custom error message for post-parsing validation
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let mut cmd = Command::new("myprog");
- /// let err = cmd.error(ErrorKind::InvalidValue, "Some failure case");
- /// ```
- pub fn error(&mut self, kind: ErrorKind, message: impl std::fmt::Display) -> Error {
- Error::raw(kind, message).format(self)
- }
-
- /// Parse [`env::args_os`], exiting on failure.
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let matches = Command::new("myprog")
- /// // Args and options go here...
- /// .get_matches();
- /// ```
- /// [`env::args_os`]: std::env::args_os()
- /// [`Command::try_get_matches_from_mut`]: Command::try_get_matches_from_mut()
- #[inline]
- pub fn get_matches(self) -> ArgMatches {
- self.get_matches_from(env::args_os())
- }
-
- /// Parse [`env::args_os`], exiting on failure.
- ///
- /// Like [`Command::get_matches`] but doesn't consume the `Command`.
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let mut cmd = Command::new("myprog")
- /// // Args and options go here...
- /// ;
- /// let matches = cmd.get_matches_mut();
- /// ```
- /// [`env::args_os`]: std::env::args_os()
- /// [`Command::get_matches`]: Command::get_matches()
- pub fn get_matches_mut(&mut self) -> ArgMatches {
- self.try_get_matches_from_mut(&mut env::args_os())
- .unwrap_or_else(|e| e.exit())
- }
-
- /// Parse [`env::args_os`], returning a [`clap::Result`] on failure.
- ///
- /// **NOTE:** This method WILL NOT exit when `--help` or `--version` (or short versions) are
- /// used. It will return a [`clap::Error`], where the [`kind`] is a
- /// [`ErrorKind::DisplayHelp`] or [`ErrorKind::DisplayVersion`] respectively. You must call
- /// [`Error::exit`] or perform a [`std::process::exit`].
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let matches = Command::new("myprog")
- /// // Args and options go here...
- /// .try_get_matches()
- /// .unwrap_or_else(|e| e.exit());
- /// ```
- /// [`env::args_os`]: std::env::args_os()
- /// [`Error::exit`]: crate::Error::exit()
- /// [`std::process::exit`]: std::process::exit()
- /// [`clap::Result`]: Result
- /// [`clap::Error`]: crate::Error
- /// [`kind`]: crate::Error
- /// [`ErrorKind::DisplayHelp`]: crate::error::ErrorKind::DisplayHelp
- /// [`ErrorKind::DisplayVersion`]: crate::error::ErrorKind::DisplayVersion
- #[inline]
- pub fn try_get_matches(self) -> ClapResult<ArgMatches> {
- // Start the parsing
- self.try_get_matches_from(env::args_os())
- }
-
- /// Parse the specified arguments, exiting on failure.
- ///
- /// **NOTE:** The first argument will be parsed as the binary name unless
- /// [`Command::no_binary_name`] is used.
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let arg_vec = vec!["my_prog", "some", "args", "to", "parse"];
- ///
- /// let matches = Command::new("myprog")
- /// // Args and options go here...
- /// .get_matches_from(arg_vec);
- /// ```
- /// [`Command::get_matches`]: Command::get_matches()
- /// [`clap::Result`]: Result
- /// [`Vec`]: std::vec::Vec
- pub fn get_matches_from<I, T>(mut self, itr: I) -> ArgMatches
- where
- I: IntoIterator<Item = T>,
- T: Into<OsString> + Clone,
- {
- self.try_get_matches_from_mut(itr).unwrap_or_else(|e| {
- drop(self);
- e.exit()
- })
- }
-
- /// Parse the specified arguments, returning a [`clap::Result`] on failure.
- ///
- /// **NOTE:** This method WILL NOT exit when `--help` or `--version` (or short versions) are
- /// used. It will return a [`clap::Error`], where the [`kind`] is a [`ErrorKind::DisplayHelp`]
- /// or [`ErrorKind::DisplayVersion`] respectively. You must call [`Error::exit`] or
- /// perform a [`std::process::exit`] yourself.
- ///
- /// **NOTE:** The first argument will be parsed as the binary name unless
- /// [`Command::no_binary_name`] is used.
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let arg_vec = vec!["my_prog", "some", "args", "to", "parse"];
- ///
- /// let matches = Command::new("myprog")
- /// // Args and options go here...
- /// .try_get_matches_from(arg_vec)
- /// .unwrap_or_else(|e| e.exit());
- /// ```
- /// [`Command::get_matches_from`]: Command::get_matches_from()
- /// [`Command::try_get_matches`]: Command::try_get_matches()
- /// [`Error::exit`]: crate::Error::exit()
- /// [`std::process::exit`]: std::process::exit()
- /// [`clap::Error`]: crate::Error
- /// [`Error::exit`]: crate::Error::exit()
- /// [`kind`]: crate::Error
- /// [`ErrorKind::DisplayHelp`]: crate::error::ErrorKind::DisplayHelp
- /// [`ErrorKind::DisplayVersion`]: crate::error::ErrorKind::DisplayVersion
- /// [`clap::Result`]: Result
- pub fn try_get_matches_from<I, T>(mut self, itr: I) -> ClapResult<ArgMatches>
- where
- I: IntoIterator<Item = T>,
- T: Into<OsString> + Clone,
- {
- self.try_get_matches_from_mut(itr)
- }
-
- /// Parse the specified arguments, returning a [`clap::Result`] on failure.
- ///
- /// Like [`Command::try_get_matches_from`] but doesn't consume the `Command`.
- ///
- /// **NOTE:** This method WILL NOT exit when `--help` or `--version` (or short versions) are
- /// used. It will return a [`clap::Error`], where the [`kind`] is a [`ErrorKind::DisplayHelp`]
- /// or [`ErrorKind::DisplayVersion`] respectively. You must call [`Error::exit`] or
- /// perform a [`std::process::exit`] yourself.
- ///
- /// **NOTE:** The first argument will be parsed as the binary name unless
- /// [`Command::no_binary_name`] is used.
- ///
- /// # Panics
- ///
- /// If contradictory arguments or settings exist.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let arg_vec = vec!["my_prog", "some", "args", "to", "parse"];
- ///
- /// let mut cmd = Command::new("myprog");
- /// // Args and options go here...
- /// let matches = cmd.try_get_matches_from_mut(arg_vec)
- /// .unwrap_or_else(|e| e.exit());
- /// ```
- /// [`Command::try_get_matches_from`]: Command::try_get_matches_from()
- /// [`clap::Result`]: Result
- /// [`clap::Error`]: crate::Error
- /// [`kind`]: crate::Error
- pub fn try_get_matches_from_mut<I, T>(&mut self, itr: I) -> ClapResult<ArgMatches>
- where
- I: IntoIterator<Item = T>,
- T: Into<OsString> + Clone,
- {
- let mut raw_args = clap_lex::RawArgs::new(itr.into_iter());
- let mut cursor = raw_args.cursor();
-
- if self.settings.is_set(AppSettings::Multicall) {
- if let Some(argv0) = raw_args.next_os(&mut cursor) {
- let argv0 = Path::new(&argv0);
- if let Some(command) = argv0.file_stem().and_then(|f| f.to_str()) {
- // Stop borrowing command so we can get another mut ref to it.
- let command = command.to_owned();
- debug!(
- "Command::try_get_matches_from_mut: Parsed command {} from argv",
- command
- );
-
- debug!("Command::try_get_matches_from_mut: Reinserting command into arguments so subcommand parser matches it");
- raw_args.insert(&cursor, [&command]);
- debug!("Command::try_get_matches_from_mut: Clearing name and bin_name so that displayed command name starts with applet name");
- self.name = "".into();
- self.bin_name = None;
- return self._do_parse(&mut raw_args, cursor);
- }
- }
- };
-
- // Get the name of the program (argument 1 of env::args()) and determine the
- // actual file
- // that was used to execute the program. This is because a program called
- // ./target/release/my_prog -a
- // will have two arguments, './target/release/my_prog', '-a' but we don't want
- // to display
- // the full path when displaying help messages and such
- if !self.settings.is_set(AppSettings::NoBinaryName) {
- if let Some(name) = raw_args.next_os(&mut cursor) {
- let p = Path::new(name);
-
- if let Some(f) = p.file_name() {
- if let Some(s) = f.to_str() {
- if self.bin_name.is_none() {
- self.bin_name = Some(s.to_owned());
- }
- }
- }
- }
- }
-
- self._do_parse(&mut raw_args, cursor)
- }
-
- /// Prints the short help message (`-h`) to [`io::stdout()`].
- ///
- /// See also [`Command::print_long_help`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// let mut cmd = Command::new("myprog");
- /// cmd.print_help();
- /// ```
- /// [`io::stdout()`]: std::io::stdout()
- pub fn print_help(&mut self) -> io::Result<()> {
- self._build_self(false);
- let color = self.color_help();
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, false);
-
- let c = Colorizer::new(Stream::Stdout, color).with_content(styled);
- c.print()
- }
-
- /// Prints the long help message (`--help`) to [`io::stdout()`].
- ///
- /// See also [`Command::print_help`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// let mut cmd = Command::new("myprog");
- /// cmd.print_long_help();
- /// ```
- /// [`io::stdout()`]: std::io::stdout()
- /// [`BufWriter`]: std::io::BufWriter
- /// [`-h` (short)]: Arg::help()
- /// [`--help` (long)]: Arg::long_help()
- pub fn print_long_help(&mut self) -> io::Result<()> {
- self._build_self(false);
- let color = self.color_help();
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, true);
-
- let c = Colorizer::new(Stream::Stdout, color).with_content(styled);
- c.print()
- }
-
- /// Render the short help message (`-h`) to a [`StyledStr`]
- ///
- /// See also [`Command::render_long_help`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// use std::io;
- /// let mut cmd = Command::new("myprog");
- /// let mut out = io::stdout();
- /// let help = cmd.render_help();
- /// println!("{}", help);
- /// ```
- /// [`io::Write`]: std::io::Write
- /// [`-h` (short)]: Arg::help()
- /// [`--help` (long)]: Arg::long_help()
- pub fn render_help(&mut self) -> StyledStr {
- self._build_self(false);
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, false);
- styled
- }
-
- /// Render the long help message (`--help`) to a [`StyledStr`].
- ///
- /// See also [`Command::render_help`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// use std::io;
- /// let mut cmd = Command::new("myprog");
- /// let mut out = io::stdout();
- /// let help = cmd.render_long_help();
- /// println!("{}", help);
- /// ```
- /// [`io::Write`]: std::io::Write
- /// [`-h` (short)]: Arg::help()
- /// [`--help` (long)]: Arg::long_help()
- pub fn render_long_help(&mut self) -> StyledStr {
- self._build_self(false);
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, true);
- styled
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Command::render_help`")
- )]
- pub fn write_help<W: io::Write>(&mut self, w: &mut W) -> io::Result<()> {
- self._build_self(false);
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, false);
- ok!(write!(w, "{}", styled));
- w.flush()
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Command::render_long_help`")
- )]
- pub fn write_long_help<W: io::Write>(&mut self, w: &mut W) -> io::Result<()> {
- self._build_self(false);
-
- let mut styled = StyledStr::new();
- let usage = Usage::new(self);
- write_help(&mut styled, self, &usage, true);
- ok!(write!(w, "{}", styled));
- w.flush()
- }
-
- /// Version message rendered as if the user ran `-V`.
- ///
- /// See also [`Command::render_long_version`].
- ///
- /// ### Coloring
- ///
- /// This function does not try to color the message nor it inserts any [ANSI escape codes].
- ///
- /// ### Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// use std::io;
- /// let cmd = Command::new("myprog");
- /// println!("{}", cmd.render_version());
- /// ```
- /// [`io::Write`]: std::io::Write
- /// [`-V` (short)]: Command::version()
- /// [`--version` (long)]: Command::long_version()
- /// [ANSI escape codes]: https://en.wikipedia.org/wiki/ANSI_escape_code
- pub fn render_version(&self) -> String {
- self._render_version(false)
- }
-
- /// Version message rendered as if the user ran `--version`.
- ///
- /// See also [`Command::render_version`].
- ///
- /// ### Coloring
- ///
- /// This function does not try to color the message nor it inserts any [ANSI escape codes].
- ///
- /// ### Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// use std::io;
- /// let cmd = Command::new("myprog");
- /// println!("{}", cmd.render_long_version());
- /// ```
- /// [`io::Write`]: std::io::Write
- /// [`-V` (short)]: Command::version()
- /// [`--version` (long)]: Command::long_version()
- /// [ANSI escape codes]: https://en.wikipedia.org/wiki/ANSI_escape_code
- pub fn render_long_version(&self) -> String {
- self._render_version(true)
- }
-
- /// Usage statement
- ///
- /// ### Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// use std::io;
- /// let mut cmd = Command::new("myprog");
- /// println!("{}", cmd.render_usage());
- /// ```
- pub fn render_usage(&mut self) -> StyledStr {
- self.render_usage_().unwrap_or_default()
- }
-
- pub(crate) fn render_usage_(&mut self) -> Option<StyledStr> {
- // If there are global arguments, or settings we need to propagate them down to subcommands
- // before parsing incase we run into a subcommand
- self._build_self(false);
-
- Usage::new(self).create_usage_with_title(&[])
- }
-}
-
-/// # Application-wide Settings
-///
-/// These settings will apply to the top-level command and all subcommands, by default. Some
-/// settings can be overridden in subcommands.
-impl Command {
- /// Specifies that the parser should not assume the first argument passed is the binary name.
- ///
- /// This is normally the case when using a "daemon" style mode. For shells / REPLs, see
- /// [`Command::multicall`][Command::multicall].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, arg};
- /// let m = Command::new("myprog")
- /// .no_binary_name(true)
- /// .arg(arg!(<cmd> ... "commands to run"))
- /// .get_matches_from(vec!["command", "set"]);
- ///
- /// let cmds: Vec<_> = m.get_many::<String>("cmd").unwrap().collect();
- /// assert_eq!(cmds, ["command", "set"]);
- /// ```
- /// [`try_get_matches_from_mut`]: crate::Command::try_get_matches_from_mut()
- #[inline]
- pub fn no_binary_name(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::NoBinaryName)
- } else {
- self.unset_global_setting(AppSettings::NoBinaryName)
- }
- }
-
- /// Try not to fail on parse errors, like missing option values.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, arg};
- /// let cmd = Command::new("cmd")
- /// .ignore_errors(true)
- /// .arg(arg!(-c --config <FILE> "Sets a custom config file"))
- /// .arg(arg!(-x --stuff <FILE> "Sets a custom stuff file"))
- /// .arg(arg!(f: -f "Flag"));
- ///
- /// let r = cmd.try_get_matches_from(vec!["cmd", "-c", "file", "-f", "-x"]);
- ///
- /// assert!(r.is_ok(), "unexpected error: {:?}", r);
- /// let m = r.unwrap();
- /// assert_eq!(m.get_one::<String>("config").unwrap(), "file");
- /// assert!(m.get_flag("f"));
- /// assert_eq!(m.get_one::<String>("stuff"), None);
- /// ```
- #[inline]
- pub fn ignore_errors(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::IgnoreErrors)
- } else {
- self.unset_global_setting(AppSettings::IgnoreErrors)
- }
- }
-
- /// Replace prior occurrences of arguments rather than error
- ///
- /// For any argument that would conflict with itself by default (e.g.
- /// [`ArgAction::Set`][ArgAction::Set], it will now override itself.
- ///
- /// This is the equivalent to saying the `foo` arg using [`Arg::overrides_with("foo")`] for all
- /// defined arguments.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// [`Arg::overrides_with("foo")`]: crate::Arg::overrides_with()
- #[inline]
- pub fn args_override_self(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::AllArgsOverrideSelf)
- } else {
- self.unset_global_setting(AppSettings::AllArgsOverrideSelf)
- }
- }
-
- /// Disables the automatic delimiting of values after `--` or when [`Command::trailing_var_arg`]
- /// was used.
- ///
- /// **NOTE:** The same thing can be done manually by setting the final positional argument to
- /// [`Arg::value_delimiter(None)`]. Using this setting is safer, because it's easier to locate
- /// when making changes.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .dont_delimit_trailing_values(true)
- /// .get_matches();
- /// ```
- ///
- /// [`Arg::value_delimiter(None)`]: crate::Arg::value_delimiter()
- #[inline]
- pub fn dont_delimit_trailing_values(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::DontDelimitTrailingValues)
- } else {
- self.unset_global_setting(AppSettings::DontDelimitTrailingValues)
- }
- }
-
- /// Sets when to color output.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// **NOTE:** Default behaviour is [`ColorChoice::Auto`].
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, ColorChoice};
- /// Command::new("myprog")
- /// .color(ColorChoice::Never)
- /// .get_matches();
- /// ```
- /// [`ColorChoice::Auto`]: crate::ColorChoice::Auto
- #[cfg(feature = "color")]
- #[inline]
- #[must_use]
- pub fn color(self, color: ColorChoice) -> Self {
- let cmd = self
- .unset_global_setting(AppSettings::ColorAuto)
- .unset_global_setting(AppSettings::ColorAlways)
- .unset_global_setting(AppSettings::ColorNever);
- match color {
- ColorChoice::Auto => cmd.global_setting(AppSettings::ColorAuto),
- ColorChoice::Always => cmd.global_setting(AppSettings::ColorAlways),
- ColorChoice::Never => cmd.global_setting(AppSettings::ColorNever),
- }
- }
-
- /// Sets the terminal width at which to wrap help messages.
- ///
- /// Using `0` will ignore terminal widths and use source formatting.
- ///
- /// Defaults to current terminal width when `wrap_help` feature flag is enabled. If the flag
- /// is disabled or it cannot be determined, the default is 100.
- ///
- /// **NOTE:** This setting applies globally and *not* on a per-command basis.
- ///
- /// **NOTE:** This requires the [`wrap_help` feature][crate::_features]
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .term_width(80)
- /// # ;
- /// ```
- #[inline]
- #[must_use]
- #[cfg(any(not(feature = "unstable-v5"), feature = "wrap_help"))]
- pub fn term_width(mut self, width: usize) -> Self {
- self.term_w = Some(width);
- self
- }
-
- /// Limit the line length for wrapping help when using the current terminal's width.
- ///
- /// This only applies when [`term_width`][Command::term_width] is unset so that the current
- /// terminal's width will be used. See [`Command::term_width`] for more details.
- ///
- /// Using `0` will ignore terminal widths and use source formatting (default).
- ///
- /// **NOTE:** This setting applies globally and *not* on a per-command basis.
- ///
- /// **NOTE:** This requires the [`wrap_help` feature][crate::_features]
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .max_term_width(100)
- /// # ;
- /// ```
- #[inline]
- #[must_use]
- #[cfg(any(not(feature = "unstable-v5"), feature = "wrap_help"))]
- pub fn max_term_width(mut self, w: usize) -> Self {
- self.max_w = Some(w);
- self
- }
-
- /// Disables `-V` and `--version` flag.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let res = Command::new("myprog")
- /// .disable_version_flag(true)
- /// .try_get_matches_from(vec![
- /// "myprog", "-V"
- /// ]);
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::UnknownArgument);
- /// ```
- #[inline]
- pub fn disable_version_flag(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::DisableVersionFlag)
- } else {
- self.unset_global_setting(AppSettings::DisableVersionFlag)
- }
- }
-
- /// Specifies to use the version of the current command for all [`subcommands`].
- ///
- /// Defaults to `false`; subcommands have independent version strings from their parents.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .version("v1.1")
- /// .propagate_version(true)
- /// .subcommand(Command::new("test"))
- /// .get_matches();
- /// // running `$ myprog test --version` will display
- /// // "myprog-test v1.1"
- /// ```
- ///
- /// [`subcommands`]: crate::Command::subcommand()
- #[inline]
- pub fn propagate_version(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::PropagateVersion)
- } else {
- self.unset_global_setting(AppSettings::PropagateVersion)
- }
- }
-
- /// Places the help string for all arguments and subcommands on the line after them.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .next_line_help(true)
- /// .get_matches();
- /// ```
- #[inline]
- pub fn next_line_help(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::NextLineHelp)
- } else {
- self.unset_global_setting(AppSettings::NextLineHelp)
- }
- }
-
- /// Disables `-h` and `--help` flag.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let res = Command::new("myprog")
- /// .disable_help_flag(true)
- /// .try_get_matches_from(vec![
- /// "myprog", "-h"
- /// ]);
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::UnknownArgument);
- /// ```
- #[inline]
- pub fn disable_help_flag(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::DisableHelpFlag)
- } else {
- self.unset_global_setting(AppSettings::DisableHelpFlag)
- }
- }
-
- /// Disables the `help` [`subcommand`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let res = Command::new("myprog")
- /// .disable_help_subcommand(true)
- /// // Normally, creating a subcommand causes a `help` subcommand to automatically
- /// // be generated as well
- /// .subcommand(Command::new("test"))
- /// .try_get_matches_from(vec![
- /// "myprog", "help"
- /// ]);
- /// assert!(res.is_err());
- /// assert_eq!(res.unwrap_err().kind(), ErrorKind::InvalidSubcommand);
- /// ```
- ///
- /// [`subcommand`]: crate::Command::subcommand()
- #[inline]
- pub fn disable_help_subcommand(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::DisableHelpSubcommand)
- } else {
- self.unset_global_setting(AppSettings::DisableHelpSubcommand)
- }
- }
-
- /// Disables colorized help messages.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .disable_colored_help(true)
- /// .get_matches();
- /// ```
- #[inline]
- pub fn disable_colored_help(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::DisableColoredHelp)
- } else {
- self.unset_global_setting(AppSettings::DisableColoredHelp)
- }
- }
-
- /// Panic if help descriptions are omitted.
- ///
- /// **NOTE:** When deriving [`Parser`][crate::Parser], you could instead check this at
- /// compile-time with `#![deny(missing_docs)]`
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .help_expected(true)
- /// .arg(
- /// Arg::new("foo").help("It does foo stuff")
- /// // As required via `help_expected`, a help message was supplied
- /// )
- /// # .get_matches();
- /// ```
- ///
- /// # Panics
- ///
- /// ```rust,no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myapp")
- /// .help_expected(true)
- /// .arg(
- /// Arg::new("foo")
- /// // Someone forgot to put .about("...") here
- /// // Since the setting `help_expected` is activated, this will lead to
- /// // a panic (if you are in debug mode)
- /// )
- /// # .get_matches();
- ///```
- #[inline]
- pub fn help_expected(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::HelpExpected)
- } else {
- self.unset_global_setting(AppSettings::HelpExpected)
- }
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "This is now the default")
- )]
- pub fn dont_collapse_args_in_usage(self, _yes: bool) -> Self {
- self
- }
-
- /// Tells `clap` *not* to print possible values when displaying help information.
- ///
- /// This can be useful if there are many values, or they are explained elsewhere.
- ///
- /// To set this per argument, see
- /// [`Arg::hide_possible_values`][crate::Arg::hide_possible_values].
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- #[inline]
- pub fn hide_possible_values(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::HidePossibleValues)
- } else {
- self.unset_global_setting(AppSettings::HidePossibleValues)
- }
- }
-
- /// Allow partial matches of long arguments or their [aliases].
- ///
- /// For example, to match an argument named `--test`, one could use `--t`, `--te`, `--tes`, and
- /// `--test`.
- ///
- /// **NOTE:** The match *must not* be ambiguous at all in order to succeed. i.e. to match
- /// `--te` to `--test` there could not also be another argument or alias `--temp` because both
- /// start with `--te`
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// [aliases]: crate::Command::aliases()
- #[inline]
- pub fn infer_long_args(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::InferLongArgs)
- } else {
- self.unset_global_setting(AppSettings::InferLongArgs)
- }
- }
-
- /// Allow partial matches of [subcommand] names and their [aliases].
- ///
- /// For example, to match a subcommand named `test`, one could use `t`, `te`, `tes`, and
- /// `test`.
- ///
- /// **NOTE:** The match *must not* be ambiguous at all in order to succeed. i.e. to match `te`
- /// to `test` there could not also be a subcommand or alias `temp` because both start with `te`
- ///
- /// **CAUTION:** This setting can interfere with [positional/free arguments], take care when
- /// designing CLIs which allow inferred subcommands and have potential positional/free
- /// arguments whose values could start with the same characters as subcommands. If this is the
- /// case, it's recommended to use settings such as [`Command::args_conflicts_with_subcommands`] in
- /// conjunction with this setting.
- ///
- /// **NOTE:** This choice is propagated to all child subcommands.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let m = Command::new("prog")
- /// .infer_subcommands(true)
- /// .subcommand(Command::new("test"))
- /// .get_matches_from(vec![
- /// "prog", "te"
- /// ]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- ///
- /// [subcommand]: crate::Command::subcommand()
- /// [positional/free arguments]: crate::Arg::index()
- /// [aliases]: crate::Command::aliases()
- #[inline]
- pub fn infer_subcommands(self, yes: bool) -> Self {
- if yes {
- self.global_setting(AppSettings::InferSubcommands)
- } else {
- self.unset_global_setting(AppSettings::InferSubcommands)
- }
- }
-}
-
-/// # Command-specific Settings
-///
-/// These apply only to the current command and are not inherited by subcommands.
-impl Command {
- /// (Re)Sets the program's name.
- ///
- /// See [`Command::new`] for more details.
- ///
- /// # Examples
- ///
- /// ```ignore
- /// let cmd = clap::command!()
- /// .name("foo");
- ///
- /// // continued logic goes here, such as `cmd.get_matches()` etc.
- /// ```
- #[must_use]
- pub fn name(mut self, name: impl Into<Str>) -> Self {
- self.name = name.into();
- self
- }
-
- /// Overrides the runtime-determined name of the binary for help and error messages.
- ///
- /// This should only be used when absolutely necessary, such as when the binary name for your
- /// application is misleading, or perhaps *not* how the user should invoke your program.
- ///
- /// **Pro-tip:** When building things such as third party `cargo`
- /// subcommands, this setting **should** be used!
- ///
- /// **NOTE:** This *does not* change or set the name of the binary file on
- /// disk. It only changes what clap thinks the name is for the purposes of
- /// error or help messages.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("My Program")
- /// .bin_name("my_binary")
- /// # ;
- /// ```
- #[must_use]
- pub fn bin_name(mut self, name: impl IntoResettable<String>) -> Self {
- self.bin_name = name.into_resettable().into_option();
- self
- }
-
- /// Overrides the runtime-determined display name of the program for help and error messages.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("My Program")
- /// .display_name("my_program")
- /// # ;
- /// ```
- #[must_use]
- pub fn display_name(mut self, name: impl IntoResettable<String>) -> Self {
- self.display_name = name.into_resettable().into_option();
- self
- }
-
- /// Sets the author(s) for the help message.
- ///
- /// **Pro-tip:** Use `clap`s convenience macro [`crate_authors!`] to
- /// automatically set your application's author(s) to the same thing as your
- /// crate at compile time.
- ///
- /// **NOTE:** A custom [`help_template`][Command::help_template] is needed for author to show
- /// up.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .author("Me, me@mymain.com")
- /// # ;
- /// ```
- #[must_use]
- pub fn author(mut self, author: impl IntoResettable<Str>) -> Self {
- self.author = author.into_resettable().into_option();
- self
- }
-
- /// Sets the program's description for the short help (`-h`).
- ///
- /// If [`Command::long_about`] is not specified, this message will be displayed for `--help`.
- ///
- /// **NOTE:** Only `Command::about` (short format) is used in completion
- /// script generation in order to be concise.
- ///
- /// See also [`crate_description!`](crate::crate_description!).
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .about("Does really amazing things for great people")
- /// # ;
- /// ```
- #[must_use]
- pub fn about(mut self, about: impl IntoResettable<StyledStr>) -> Self {
- self.about = about.into_resettable().into_option();
- self
- }
-
- /// Sets the program's description for the long help (`--help`).
- ///
- /// If [`Command::about`] is not specified, this message will be displayed for `-h`.
- ///
- /// **NOTE:** Only [`Command::about`] (short format) is used in completion
- /// script generation in order to be concise.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .long_about(
- /// "Does really amazing things to great people. Now let's talk a little
- /// more in depth about how this subcommand really works. It may take about
- /// a few lines of text, but that's ok!")
- /// # ;
- /// ```
- /// [`Command::about`]: Command::about()
- #[must_use]
- pub fn long_about(mut self, long_about: impl IntoResettable<StyledStr>) -> Self {
- self.long_about = long_about.into_resettable().into_option();
- self
- }
-
- /// Free-form help text for after auto-generated short help (`-h`).
- ///
- /// This is often used to describe how to use the arguments, caveats to be noted, or license
- /// and contact information.
- ///
- /// If [`Command::after_long_help`] is not specified, this message will be displayed for `--help`.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .after_help("Does really amazing things for great people... but be careful with -R!")
- /// # ;
- /// ```
- ///
- #[must_use]
- pub fn after_help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.after_help = help.into_resettable().into_option();
- self
- }
-
- /// Free-form help text for after auto-generated long help (`--help`).
- ///
- /// This is often used to describe how to use the arguments, caveats to be noted, or license
- /// and contact information.
- ///
- /// If [`Command::after_help`] is not specified, this message will be displayed for `-h`.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .after_long_help("Does really amazing things to great people... but be careful with -R, \
- /// like, for real, be careful with this!")
- /// # ;
- /// ```
- #[must_use]
- pub fn after_long_help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.after_long_help = help.into_resettable().into_option();
- self
- }
-
- /// Free-form help text for before auto-generated short help (`-h`).
- ///
- /// This is often used for header, copyright, or license information.
- ///
- /// If [`Command::before_long_help`] is not specified, this message will be displayed for `--help`.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .before_help("Some info I'd like to appear before the help info")
- /// # ;
- /// ```
- #[must_use]
- pub fn before_help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.before_help = help.into_resettable().into_option();
- self
- }
-
- /// Free-form help text for before auto-generated long help (`--help`).
- ///
- /// This is often used for header, copyright, or license information.
- ///
- /// If [`Command::before_help`] is not specified, this message will be displayed for `-h`.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .before_long_help("Some verbose and long info I'd like to appear before the help info")
- /// # ;
- /// ```
- #[must_use]
- pub fn before_long_help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.before_long_help = help.into_resettable().into_option();
- self
- }
-
- /// Sets the version for the short version (`-V`) and help messages.
- ///
- /// If [`Command::long_version`] is not specified, this message will be displayed for `--version`.
- ///
- /// **Pro-tip:** Use `clap`s convenience macro [`crate_version!`] to
- /// automatically set your application's version to the same thing as your
- /// crate at compile time.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .version("v0.1.24")
- /// # ;
- /// ```
- #[must_use]
- pub fn version(mut self, ver: impl IntoResettable<Str>) -> Self {
- self.version = ver.into_resettable().into_option();
- self
- }
-
- /// Sets the version for the long version (`--version`) and help messages.
- ///
- /// If [`Command::version`] is not specified, this message will be displayed for `-V`.
- ///
- /// **Pro-tip:** Use `clap`s convenience macro [`crate_version!`] to
- /// automatically set your application's version to the same thing as your
- /// crate at compile time.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .long_version(
- /// "v0.1.24
- /// commit: abcdef89726d
- /// revision: 123
- /// release: 2
- /// binary: myprog")
- /// # ;
- /// ```
- #[must_use]
- pub fn long_version(mut self, ver: impl IntoResettable<Str>) -> Self {
- self.long_version = ver.into_resettable().into_option();
- self
- }
-
- /// Overrides the `clap` generated usage string for help and error messages.
- ///
- /// **NOTE:** Using this setting disables `clap`s "context-aware" usage
- /// strings. After this setting is set, this will be *the only* usage string
- /// displayed to the user!
- ///
- /// **NOTE:** Multiple usage lines may be present in the usage argument, but
- /// some rules need to be followed to ensure the usage lines are formatted
- /// correctly by the default help formatter:
- ///
- /// - Do not indent the first usage line.
- /// - Indent all subsequent usage lines with seven spaces.
- /// - The last line must not end with a newline.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .override_usage("myapp [-clDas] <some_file>")
- /// # ;
- /// ```
- ///
- /// Or for multiple usage lines:
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .override_usage(
- /// "myapp -X [-a] [-b] <file>\n \
- /// myapp -Y [-c] <file1> <file2>\n \
- /// myapp -Z [-d|-e]"
- /// )
- /// # ;
- /// ```
- ///
- /// [`ArgMatches::usage`]: ArgMatches::usage()
- #[must_use]
- pub fn override_usage(mut self, usage: impl IntoResettable<StyledStr>) -> Self {
- self.usage_str = usage.into_resettable().into_option();
- self
- }
-
- /// Overrides the `clap` generated help message (both `-h` and `--help`).
- ///
- /// This should only be used when the auto-generated message does not suffice.
- ///
- /// **NOTE:** This **only** replaces the help message for the current
- /// command, meaning if you are using subcommands, those help messages will
- /// still be auto-generated unless you specify a [`Command::override_help`] for
- /// them as well.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myapp")
- /// .override_help("myapp v1.0\n\
- /// Does awesome things\n\
- /// (C) me@mail.com\n\n\
- ///
- /// Usage: myapp <opts> <command>\n\n\
- ///
- /// Options:\n\
- /// -h, --help Display this message\n\
- /// -V, --version Display version info\n\
- /// -s <stuff> Do something with stuff\n\
- /// -v Be verbose\n\n\
- ///
- /// Commands:\n\
- /// help Print this message\n\
- /// work Do some work")
- /// # ;
- /// ```
- #[must_use]
- pub fn override_help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.help_str = help.into_resettable().into_option();
- self
- }
-
- /// Sets the help template to be used, overriding the default format.
- ///
- /// **NOTE:** The template system is by design very simple. Therefore, the
- /// tags have to be written in the lowercase and without spacing.
- ///
- /// Tags are given inside curly brackets.
- ///
- /// Valid tags are:
- ///
- /// * `{name}` - Display name for the (sub-)command.
- /// * `{bin}` - Binary name.(deprecated)
- /// * `{version}` - Version number.
- /// * `{author}` - Author information.
- /// * `{author-with-newline}` - Author followed by `\n`.
- /// * `{author-section}` - Author preceded and followed by `\n`.
- /// * `{about}` - General description (from [`Command::about`] or
- /// [`Command::long_about`]).
- /// * `{about-with-newline}` - About followed by `\n`.
- /// * `{about-section}` - About preceded and followed by '\n'.
- /// * `{usage-heading}` - Automatically generated usage heading.
- /// * `{usage}` - Automatically generated or given usage string.
- /// * `{all-args}` - Help for all arguments (options, flags, positional
- /// arguments, and subcommands) including titles.
- /// * `{options}` - Help for options.
- /// * `{positionals}` - Help for positional arguments.
- /// * `{subcommands}` - Help for subcommands.
- /// * `{tab}` - Standard tab sized used within clap
- /// * `{after-help}` - Help from [`Command::after_help`] or [`Command::after_long_help`].
- /// * `{before-help}` - Help from [`Command::before_help`] or [`Command::before_long_help`].
- ///
- /// # Examples
- ///
- /// For a very brief help:
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .version("1.0")
- /// .help_template("{name} ({version}) - {usage}")
- /// # ;
- /// ```
- ///
- /// For showing more application context:
- ///
- /// ```no_run
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .version("1.0")
- /// .help_template("\
- /// {before-help}{name} {version}
- /// {author-with-newline}{about-with-newline}
- /// {usage-heading} {usage}
- ///
- /// {all-args}{after-help}
- /// ")
- /// # ;
- /// ```
- /// [`Command::about`]: Command::about()
- /// [`Command::long_about`]: Command::long_about()
- /// [`Command::after_help`]: Command::after_help()
- /// [`Command::after_long_help`]: Command::after_long_help()
- /// [`Command::before_help`]: Command::before_help()
- /// [`Command::before_long_help`]: Command::before_long_help()
- #[must_use]
- #[cfg(feature = "help")]
- pub fn help_template(mut self, s: impl IntoResettable<StyledStr>) -> Self {
- self.template = s.into_resettable().into_option();
- self
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn setting<F>(mut self, setting: F) -> Self
- where
- F: Into<AppFlags>,
- {
- self.settings.insert(setting.into());
- self
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn unset_setting<F>(mut self, setting: F) -> Self
- where
- F: Into<AppFlags>,
- {
- self.settings.remove(setting.into());
- self
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn global_setting(mut self, setting: AppSettings) -> Self {
- self.settings.set(setting);
- self.g_settings.set(setting);
- self
- }
-
- #[inline]
- #[must_use]
- pub(crate) fn unset_global_setting(mut self, setting: AppSettings) -> Self {
- self.settings.unset(setting);
- self.g_settings.unset(setting);
- self
- }
-
- /// Set the default section heading for future args.
- ///
- /// This will be used for any arg that hasn't had [`Arg::help_heading`] called.
- ///
- /// This is useful if the default `Options` or `Arguments` headings are
- /// not specific enough for one's use case.
- ///
- /// For subcommands, see [`Command::subcommand_help_heading`]
- ///
- /// [`Command::arg`]: Command::arg()
- /// [`Arg::help_heading`]: crate::Arg::help_heading()
- #[inline]
- #[must_use]
- pub fn next_help_heading(mut self, heading: impl IntoResettable<Str>) -> Self {
- self.current_help_heading = heading.into_resettable().into_option();
- self
- }
-
- /// Change the starting value for assigning future display orders for ags.
- ///
- /// This will be used for any arg that hasn't had [`Arg::display_order`] called.
- #[inline]
- #[must_use]
- pub fn next_display_order(mut self, disp_ord: impl IntoResettable<usize>) -> Self {
- self.current_disp_ord = disp_ord.into_resettable().into_option();
- self
- }
-
- /// Replaces an argument or subcommand used on the CLI at runtime with other arguments or subcommands.
- ///
- /// **Note:** This is gated behind [`unstable-replace`](https://github.com/clap-rs/clap/issues/2836)
- ///
- /// When this method is used, `name` is removed from the CLI, and `target`
- /// is inserted in its place. Parsing continues as if the user typed
- /// `target` instead of `name`.
- ///
- /// This can be used to create "shortcuts" for subcommands, or if a
- /// particular argument has the semantic meaning of several other specific
- /// arguments and values.
- ///
- /// # Examples
- ///
- /// We'll start with the "subcommand short" example. In this example, let's
- /// assume we have a program with a subcommand `module` which can be invoked
- /// via `cmd module`. Now let's also assume `module` also has a subcommand
- /// called `install` which can be invoked `cmd module install`. If for some
- /// reason users needed to be able to reach `cmd module install` via the
- /// short-hand `cmd install`, we'd have several options.
- ///
- /// We *could* create another sibling subcommand to `module` called
- /// `install`, but then we would need to manage another subcommand and manually
- /// dispatch to `cmd module install` handling code. This is error prone and
- /// tedious.
- ///
- /// We could instead use [`Command::replace`] so that, when the user types `cmd
- /// install`, `clap` will replace `install` with `module install` which will
- /// end up getting parsed as if the user typed the entire incantation.
- ///
- /// ```rust
- /// # use clap::Command;
- /// let m = Command::new("cmd")
- /// .subcommand(Command::new("module")
- /// .subcommand(Command::new("install")))
- /// .replace("install", &["module", "install"])
- /// .get_matches_from(vec!["cmd", "install"]);
- ///
- /// assert!(m.subcommand_matches("module").is_some());
- /// assert!(m.subcommand_matches("module").unwrap().subcommand_matches("install").is_some());
- /// ```
- ///
- /// Now let's show an argument example!
- ///
- /// Let's assume we have an application with two flags `--save-context` and
- /// `--save-runtime`. But often users end up needing to do *both* at the
- /// same time. We can add a third flag `--save-all` which semantically means
- /// the same thing as `cmd --save-context --save-runtime`. To implement that,
- /// we have several options.
- ///
- /// We could create this third argument and manually check if that argument
- /// and in our own consumer code handle the fact that both `--save-context`
- /// and `--save-runtime` *should* have been used. But again this is error
- /// prone and tedious. If we had code relying on checking `--save-context`
- /// and we forgot to update that code to *also* check `--save-all` it'd mean
- /// an error!
- ///
- /// Luckily we can use [`Command::replace`] so that when the user types
- /// `--save-all`, `clap` will replace that argument with `--save-context
- /// --save-runtime`, and parsing will continue like normal. Now all our code
- /// that was originally checking for things like `--save-context` doesn't
- /// need to change!
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("cmd")
- /// .arg(Arg::new("save-context")
- /// .long("save-context")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("save-runtime")
- /// .long("save-runtime")
- /// .action(ArgAction::SetTrue))
- /// .replace("--save-all", &["--save-context", "--save-runtime"])
- /// .get_matches_from(vec!["cmd", "--save-all"]);
- ///
- /// assert!(m.get_flag("save-context"));
- /// assert!(m.get_flag("save-runtime"));
- /// ```
- ///
- /// This can also be used with options, for example if our application with
- /// `--save-*` above also had a `--format=TYPE` option. Let's say it
- /// accepted `txt` or `json` values. However, when `--save-all` is used,
- /// only `--format=json` is allowed, or valid. We could change the example
- /// above to enforce this:
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let m = Command::new("cmd")
- /// .arg(Arg::new("save-context")
- /// .long("save-context")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("save-runtime")
- /// .long("save-runtime")
- /// .action(ArgAction::SetTrue))
- /// .arg(Arg::new("format")
- /// .long("format")
- /// .action(ArgAction::Set)
- /// .value_parser(["txt", "json"]))
- /// .replace("--save-all", &["--save-context", "--save-runtime", "--format=json"])
- /// .get_matches_from(vec!["cmd", "--save-all"]);
- ///
- /// assert!(m.get_flag("save-context"));
- /// assert!(m.get_flag("save-runtime"));
- /// assert_eq!(m.get_one::<String>("format").unwrap(), "json");
- /// ```
- ///
- /// [`Command::replace`]: Command::replace()
- #[inline]
- #[cfg(feature = "unstable-replace")]
- #[must_use]
- pub fn replace(
- mut self,
- name: impl Into<Str>,
- target: impl IntoIterator<Item = impl Into<Str>>,
- ) -> Self {
- self.replacers
- .insert(name.into(), target.into_iter().map(Into::into).collect());
- self
- }
-
- /// Exit gracefully if no arguments are present (e.g. `$ myprog`).
- ///
- /// **NOTE:** [`subcommands`] count as arguments
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command};
- /// Command::new("myprog")
- /// .arg_required_else_help(true);
- /// ```
- ///
- /// [`subcommands`]: crate::Command::subcommand()
- /// [`Arg::default_value`]: crate::Arg::default_value()
- #[inline]
- pub fn arg_required_else_help(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::ArgRequiredElseHelp)
- } else {
- self.unset_setting(AppSettings::ArgRequiredElseHelp)
- }
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::allow_hyphen_values`")
- )]
- pub fn allow_hyphen_values(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::AllowHyphenValues)
- } else {
- self.unset_setting(AppSettings::AllowHyphenValues)
- }
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::allow_negative_numbers`")
- )]
- pub fn allow_negative_numbers(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::AllowNegativeNumbers)
- } else {
- self.unset_setting(AppSettings::AllowNegativeNumbers)
- }
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::trailing_var_arg`")
- )]
- pub fn trailing_var_arg(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::TrailingVarArg)
- } else {
- self.unset_setting(AppSettings::TrailingVarArg)
- }
- }
-
- /// Allows one to implement two styles of CLIs where positionals can be used out of order.
- ///
- /// The first example is a CLI where the second to last positional argument is optional, but
- /// the final positional argument is required. Such as `$ prog [optional] <required>` where one
- /// of the two following usages is allowed:
- ///
- /// * `$ prog [optional] <required>`
- /// * `$ prog <required>`
- ///
- /// This would otherwise not be allowed. This is useful when `[optional]` has a default value.
- ///
- /// **Note:** when using this style of "missing positionals" the final positional *must* be
- /// [required] if `--` will not be used to skip to the final positional argument.
- ///
- /// **Note:** This style also only allows a single positional argument to be "skipped" without
- /// the use of `--`. To skip more than one, see the second example.
- ///
- /// The second example is when one wants to skip multiple optional positional arguments, and use
- /// of the `--` operator is OK (but not required if all arguments will be specified anyways).
- ///
- /// For example, imagine a CLI which has three positional arguments `[foo] [bar] [baz]...` where
- /// `baz` accepts multiple values (similar to man `ARGS...` style training arguments).
- ///
- /// With this setting the following invocations are posisble:
- ///
- /// * `$ prog foo bar baz1 baz2 baz3`
- /// * `$ prog foo -- baz1 baz2 baz3`
- /// * `$ prog -- baz1 baz2 baz3`
- ///
- /// # Examples
- ///
- /// Style number one from above:
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_missing_positional(true)
- /// .arg(Arg::new("arg1"))
- /// .arg(Arg::new("arg2")
- /// .required(true))
- /// .get_matches_from(vec![
- /// "prog", "other"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("arg1"), None);
- /// assert_eq!(m.get_one::<String>("arg2").unwrap(), "other");
- /// ```
- ///
- /// Now the same example, but using a default value for the first optional positional argument
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_missing_positional(true)
- /// .arg(Arg::new("arg1")
- /// .default_value("something"))
- /// .arg(Arg::new("arg2")
- /// .required(true))
- /// .get_matches_from(vec![
- /// "prog", "other"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("arg1").unwrap(), "something");
- /// assert_eq!(m.get_one::<String>("arg2").unwrap(), "other");
- /// ```
- ///
- /// Style number two from above:
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_missing_positional(true)
- /// .arg(Arg::new("foo"))
- /// .arg(Arg::new("bar"))
- /// .arg(Arg::new("baz").action(ArgAction::Set).num_args(1..))
- /// .get_matches_from(vec![
- /// "prog", "foo", "bar", "baz1", "baz2", "baz3"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("foo").unwrap(), "foo");
- /// assert_eq!(m.get_one::<String>("bar").unwrap(), "bar");
- /// assert_eq!(m.get_many::<String>("baz").unwrap().collect::<Vec<_>>(), &["baz1", "baz2", "baz3"]);
- /// ```
- ///
- /// Now nofice if we don't specify `foo` or `baz` but use the `--` operator.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_missing_positional(true)
- /// .arg(Arg::new("foo"))
- /// .arg(Arg::new("bar"))
- /// .arg(Arg::new("baz").action(ArgAction::Set).num_args(1..))
- /// .get_matches_from(vec![
- /// "prog", "--", "baz1", "baz2", "baz3"
- /// ]);
- ///
- /// assert_eq!(m.get_one::<String>("foo"), None);
- /// assert_eq!(m.get_one::<String>("bar"), None);
- /// assert_eq!(m.get_many::<String>("baz").unwrap().collect::<Vec<_>>(), &["baz1", "baz2", "baz3"]);
- /// ```
- ///
- /// [required]: crate::Arg::required()
- #[inline]
- pub fn allow_missing_positional(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::AllowMissingPositional)
- } else {
- self.unset_setting(AppSettings::AllowMissingPositional)
- }
- }
-}
-
-/// # Subcommand-specific Settings
-impl Command {
- /// Sets the short version of the subcommand flag without the preceding `-`.
- ///
- /// Allows the subcommand to be used as if it were an [`Arg::short`].
- ///
- /// # Examples
- ///
- /// ```
- /// # use clap::{Command, Arg, ArgAction};
- /// let matches = Command::new("pacman")
- /// .subcommand(
- /// Command::new("sync").short_flag('S').arg(
- /// Arg::new("search")
- /// .short('s')
- /// .long("search")
- /// .action(ArgAction::SetTrue)
- /// .help("search remote repositories for matching strings"),
- /// ),
- /// )
- /// .get_matches_from(vec!["pacman", "-Ss"]);
- ///
- /// assert_eq!(matches.subcommand_name().unwrap(), "sync");
- /// let sync_matches = matches.subcommand_matches("sync").unwrap();
- /// assert!(sync_matches.get_flag("search"));
- /// ```
- /// [`Arg::short`]: Arg::short()
- #[must_use]
- pub fn short_flag(mut self, short: impl IntoResettable<char>) -> Self {
- self.short_flag = short.into_resettable().into_option();
- self
- }
-
- /// Sets the long version of the subcommand flag without the preceding `--`.
- ///
- /// Allows the subcommand to be used as if it were an [`Arg::long`].
- ///
- /// **NOTE:** Any leading `-` characters will be stripped.
- ///
- /// # Examples
- ///
- /// To set `long_flag` use a word containing valid UTF-8 codepoints. If you supply a double leading
- /// `--` such as `--sync` they will be stripped. Hyphens in the middle of the word; however,
- /// will *not* be stripped (i.e. `sync-file` is allowed).
- ///
- /// ```
- /// # use clap::{Command, Arg, ArgAction};
- /// let matches = Command::new("pacman")
- /// .subcommand(
- /// Command::new("sync").long_flag("sync").arg(
- /// Arg::new("search")
- /// .short('s')
- /// .long("search")
- /// .action(ArgAction::SetTrue)
- /// .help("search remote repositories for matching strings"),
- /// ),
- /// )
- /// .get_matches_from(vec!["pacman", "--sync", "--search"]);
- ///
- /// assert_eq!(matches.subcommand_name().unwrap(), "sync");
- /// let sync_matches = matches.subcommand_matches("sync").unwrap();
- /// assert!(sync_matches.get_flag("search"));
- /// ```
- ///
- /// [`Arg::long`]: Arg::long()
- #[must_use]
- pub fn long_flag(mut self, long: impl Into<Str>) -> Self {
- self.long_flag = Some(long.into());
- self
- }
-
- /// Sets a hidden alias to this subcommand.
- ///
- /// This allows the subcommand to be accessed via *either* the original name, or this given
- /// alias. This is more efficient and easier than creating multiple hidden subcommands as one
- /// only needs to check for the existence of this command, and not all aliased variants.
- ///
- /// **NOTE:** Aliases defined with this method are *hidden* from the help
- /// message. If you're looking for aliases that will be displayed in the help
- /// message, see [`Command::visible_alias`].
- ///
- /// **NOTE:** When using aliases and checking for the existence of a
- /// particular subcommand within an [`ArgMatches`] struct, one only needs to
- /// search for the original name and not all aliases.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test")
- /// .alias("do-stuff"))
- /// .get_matches_from(vec!["myprog", "do-stuff"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::visible_alias`]: Command::visible_alias()
- #[must_use]
- pub fn alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.aliases.push((name, false));
- } else {
- self.aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as "hidden" short flag subcommand
- ///
- /// This will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").short_flag('t')
- /// .short_flag_alias('d'))
- /// .get_matches_from(vec!["myprog", "-d"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- #[must_use]
- pub fn short_flag_alias(mut self, name: impl IntoResettable<char>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- debug_assert!(name != '-', "short alias name cannot be `-`");
- self.short_flag_aliases.push((name, false));
- } else {
- self.short_flag_aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as a "hidden" long flag subcommand.
- ///
- /// This will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").long_flag("test")
- /// .long_flag_alias("testing"))
- /// .get_matches_from(vec!["myprog", "--testing"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- #[must_use]
- pub fn long_flag_alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.long_flag_aliases.push((name, false));
- } else {
- self.long_flag_aliases.clear();
- }
- self
- }
-
- /// Sets multiple hidden aliases to this subcommand.
- ///
- /// This allows the subcommand to be accessed via *either* the original name or any of the
- /// given aliases. This is more efficient, and easier than creating multiple hidden subcommands
- /// as one only needs to check for the existence of this command and not all aliased variants.
- ///
- /// **NOTE:** Aliases defined with this method are *hidden* from the help
- /// message. If looking for aliases that will be displayed in the help
- /// message, see [`Command::visible_aliases`].
- ///
- /// **NOTE:** When using aliases and checking for the existence of a
- /// particular subcommand within an [`ArgMatches`] struct, one only needs to
- /// search for the original name and not all aliases.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test")
- /// .aliases(["do-stuff", "do-tests", "tests"]))
- /// .arg(Arg::new("input")
- /// .help("the file to add")
- /// .required(false))
- /// .get_matches_from(vec!["myprog", "do-tests"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::visible_aliases`]: Command::visible_aliases()
- #[must_use]
- pub fn aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.aliases
- .extend(names.into_iter().map(|n| (n.into(), false)));
- self
- }
-
- /// Add aliases, which function as "hidden" short flag subcommands.
- ///
- /// These will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").short_flag('t')
- /// .short_flag_aliases(['a', 'b', 'c']))
- /// .arg(Arg::new("input")
- /// .help("the file to add")
- /// .required(false))
- /// .get_matches_from(vec!["myprog", "-a"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- #[must_use]
- pub fn short_flag_aliases(mut self, names: impl IntoIterator<Item = char>) -> Self {
- for s in names {
- debug_assert!(s != '-', "short alias name cannot be `-`");
- self.short_flag_aliases.push((s, false));
- }
- self
- }
-
- /// Add aliases, which function as "hidden" long flag subcommands.
- ///
- /// These will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").long_flag("test")
- /// .long_flag_aliases(["testing", "testall", "test_all"]))
- /// .arg(Arg::new("input")
- /// .help("the file to add")
- /// .required(false))
- /// .get_matches_from(vec!["myprog", "--testing"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- #[must_use]
- pub fn long_flag_aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- for s in names {
- self = self.long_flag_alias(s)
- }
- self
- }
-
- /// Sets a visible alias to this subcommand.
- ///
- /// This allows the subcommand to be accessed via *either* the
- /// original name or the given alias. This is more efficient and easier
- /// than creating hidden subcommands as one only needs to check for
- /// the existence of this command and not all aliased variants.
- ///
- /// **NOTE:** The alias defined with this method is *visible* from the help
- /// message and displayed as if it were just another regular subcommand. If
- /// looking for an alias that will not be displayed in the help message, see
- /// [`Command::alias`].
- ///
- /// **NOTE:** When using aliases and checking for the existence of a
- /// particular subcommand within an [`ArgMatches`] struct, one only needs to
- /// search for the original name and not all aliases.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test")
- /// .visible_alias("do-stuff"))
- /// .get_matches_from(vec!["myprog", "do-stuff"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::alias`]: Command::alias()
- #[must_use]
- pub fn visible_alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.aliases.push((name, true));
- } else {
- self.aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as "visible" short flag subcommand
- ///
- /// This will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// See also [`Command::short_flag_alias`].
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").short_flag('t')
- /// .visible_short_flag_alias('d'))
- /// .get_matches_from(vec!["myprog", "-d"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::short_flag_alias`]: Command::short_flag_alias()
- #[must_use]
- pub fn visible_short_flag_alias(mut self, name: impl IntoResettable<char>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- debug_assert!(name != '-', "short alias name cannot be `-`");
- self.short_flag_aliases.push((name, true));
- } else {
- self.short_flag_aliases.clear();
- }
- self
- }
-
- /// Add an alias, which functions as a "visible" long flag subcommand.
- ///
- /// This will automatically dispatch as if this subcommand was used. This is more efficient,
- /// and easier than creating multiple hidden subcommands as one only needs to check for the
- /// existence of this command, and not all variants.
- ///
- /// See also [`Command::long_flag_alias`].
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").long_flag("test")
- /// .visible_long_flag_alias("testing"))
- /// .get_matches_from(vec!["myprog", "--testing"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::long_flag_alias`]: Command::long_flag_alias()
- #[must_use]
- pub fn visible_long_flag_alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.long_flag_aliases.push((name, true));
- } else {
- self.long_flag_aliases.clear();
- }
- self
- }
-
- /// Sets multiple visible aliases to this subcommand.
- ///
- /// This allows the subcommand to be accessed via *either* the
- /// original name or any of the given aliases. This is more efficient and easier
- /// than creating multiple hidden subcommands as one only needs to check for
- /// the existence of this command and not all aliased variants.
- ///
- /// **NOTE:** The alias defined with this method is *visible* from the help
- /// message and displayed as if it were just another regular subcommand. If
- /// looking for an alias that will not be displayed in the help message, see
- /// [`Command::alias`].
- ///
- /// **NOTE:** When using aliases, and checking for the existence of a
- /// particular subcommand within an [`ArgMatches`] struct, one only needs to
- /// search for the original name and not all aliases.
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test")
- /// .visible_aliases(["do-stuff", "tests"]))
- /// .get_matches_from(vec!["myprog", "do-stuff"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::alias`]: Command::alias()
- #[must_use]
- pub fn visible_aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.aliases
- .extend(names.into_iter().map(|n| (n.into(), true)));
- self
- }
-
- /// Add aliases, which function as *visible* short flag subcommands.
- ///
- /// See [`Command::short_flag_aliases`].
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").short_flag('b')
- /// .visible_short_flag_aliases(['t']))
- /// .get_matches_from(vec!["myprog", "-t"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::short_flag_aliases`]: Command::short_flag_aliases()
- #[must_use]
- pub fn visible_short_flag_aliases(mut self, names: impl IntoIterator<Item = char>) -> Self {
- for s in names {
- debug_assert!(s != '-', "short alias name cannot be `-`");
- self.short_flag_aliases.push((s, true));
- }
- self
- }
-
- /// Add aliases, which function as *visible* long flag subcommands.
- ///
- /// See [`Command::long_flag_aliases`].
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg, };
- /// let m = Command::new("myprog")
- /// .subcommand(Command::new("test").long_flag("test")
- /// .visible_long_flag_aliases(["testing", "testall", "test_all"]))
- /// .get_matches_from(vec!["myprog", "--testing"]);
- /// assert_eq!(m.subcommand_name(), Some("test"));
- /// ```
- /// [`Command::long_flag_aliases`]: Command::long_flag_aliases()
- #[must_use]
- pub fn visible_long_flag_aliases(
- mut self,
- names: impl IntoIterator<Item = impl Into<Str>>,
- ) -> Self {
- for s in names {
- self = self.visible_long_flag_alias(s);
- }
- self
- }
-
- /// Set the placement of this subcommand within the help.
- ///
- /// Subcommands with a lower value will be displayed first in the help message. Subcommands
- /// with duplicate display orders will be displayed in alphabetical order.
- ///
- /// This is helpful when one would like to emphasize frequently used subcommands, or prioritize
- /// those towards the top of the list.
- ///
- /// **NOTE:** The default is 999 for all subcommands.
- ///
- /// # Examples
- ///
- #[cfg_attr(not(feature = "help"), doc = " ```ignore")]
- #[cfg_attr(feature = "help", doc = " ```")]
- /// # use clap::{Command, };
- /// let m = Command::new("cust-ord")
- /// .subcommand(Command::new("alpha") // typically subcommands are grouped
- /// // alphabetically by name. Subcommands
- /// // without a display_order have a value of
- /// // 999 and are displayed alphabetically with
- /// // all other 999 subcommands
- /// .about("Some help and text"))
- /// .subcommand(Command::new("beta")
- /// .display_order(1) // In order to force this subcommand to appear *first*
- /// // all we have to do is give it a value lower than 999.
- /// // Any other subcommands with a value of 1 will be displayed
- /// // alphabetically with this one...then 2 values, then 3, etc.
- /// .about("I should be first!"))
- /// .get_matches_from(vec![
- /// "cust-ord", "--help"
- /// ]);
- /// ```
- ///
- /// The above example displays the following help message
- ///
- /// ```text
- /// cust-ord
- ///
- /// Usage: cust-ord [OPTIONS]
- ///
- /// Commands:
- /// beta I should be first!
- /// alpha Some help and text
- ///
- /// Options:
- /// -h, --help Print help
- /// -V, --version Print version
- /// ```
- #[inline]
- #[must_use]
- pub fn display_order(mut self, ord: impl IntoResettable<usize>) -> Self {
- self.disp_ord = ord.into_resettable().into_option();
- self
- }
-
- /// Specifies that this [`subcommand`] should be hidden from help messages
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .subcommand(
- /// Command::new("test").hide(true)
- /// )
- /// # ;
- /// ```
- ///
- /// [`subcommand`]: crate::Command::subcommand()
- #[inline]
- pub fn hide(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::Hidden)
- } else {
- self.unset_setting(AppSettings::Hidden)
- }
- }
-
- /// If no [`subcommand`] is present at runtime, error and exit gracefully.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let err = Command::new("myprog")
- /// .subcommand_required(true)
- /// .subcommand(Command::new("test"))
- /// .try_get_matches_from(vec![
- /// "myprog",
- /// ]);
- /// assert!(err.is_err());
- /// assert_eq!(err.unwrap_err().kind(), ErrorKind::MissingSubcommand);
- /// # ;
- /// ```
- ///
- /// [`subcommand`]: crate::Command::subcommand()
- pub fn subcommand_required(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::SubcommandRequired)
- } else {
- self.unset_setting(AppSettings::SubcommandRequired)
- }
- }
-
- /// Assume unexpected positional arguments are a [`subcommand`].
- ///
- /// Arguments will be stored in the `""` argument in the [`ArgMatches`]
- ///
- /// **NOTE:** Use this setting with caution,
- /// as a truly unexpected argument (i.e. one that is *NOT* an external subcommand)
- /// will **not** cause an error and instead be treated as a potential subcommand.
- /// One should check for such cases manually and inform the user appropriately.
- ///
- /// **NOTE:** A built-in subcommand will be parsed as an external subcommand when escaped with
- /// `--`.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use std::ffi::OsString;
- /// # use clap::Command;
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_external_subcommands(true)
- /// .get_matches_from(vec![
- /// "myprog", "subcmd", "--option", "value", "-fff", "--flag"
- /// ]);
- ///
- /// // All trailing arguments will be stored under the subcommand's sub-matches using an empty
- /// // string argument name
- /// match m.subcommand() {
- /// Some((external, ext_m)) => {
- /// let ext_args: Vec<_> = ext_m.get_many::<OsString>("").unwrap().collect();
- /// assert_eq!(external, "subcmd");
- /// assert_eq!(ext_args, ["--option", "value", "-fff", "--flag"]);
- /// },
- /// _ => {},
- /// }
- /// ```
- ///
- /// [`subcommand`]: crate::Command::subcommand()
- /// [`ArgMatches`]: crate::ArgMatches
- /// [`ErrorKind::UnknownArgument`]: crate::error::ErrorKind::UnknownArgument
- pub fn allow_external_subcommands(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::AllowExternalSubcommands)
- } else {
- self.unset_setting(AppSettings::AllowExternalSubcommands)
- }
- }
-
- /// Specifies how to parse external subcommand arguments.
- ///
- /// The default parser is for `OsString`. This can be used to switch it to `String` or another
- /// type.
- ///
- /// **NOTE:** Setting this requires [`Command::allow_external_subcommands`]
- ///
- /// # Examples
- ///
- #[cfg_attr(not(unix), doc = " ```ignore")]
- #[cfg_attr(unix, doc = " ```")]
- /// # use std::ffi::OsString;
- /// # use clap::Command;
- /// # use clap::value_parser;
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .allow_external_subcommands(true)
- /// .get_matches_from(vec![
- /// "myprog", "subcmd", "--option", "value", "-fff", "--flag"
- /// ]);
- ///
- /// // All trailing arguments will be stored under the subcommand's sub-matches using an empty
- /// // string argument name
- /// match m.subcommand() {
- /// Some((external, ext_m)) => {
- /// let ext_args: Vec<_> = ext_m.get_many::<OsString>("").unwrap().collect();
- /// assert_eq!(external, "subcmd");
- /// assert_eq!(ext_args, ["--option", "value", "-fff", "--flag"]);
- /// },
- /// _ => {},
- /// }
- /// ```
- ///
- /// ```
- /// # use clap::Command;
- /// # use clap::value_parser;
- /// // Assume there is an external subcommand named "subcmd"
- /// let m = Command::new("myprog")
- /// .external_subcommand_value_parser(value_parser!(String))
- /// .get_matches_from(vec![
- /// "myprog", "subcmd", "--option", "value", "-fff", "--flag"
- /// ]);
- ///
- /// // All trailing arguments will be stored under the subcommand's sub-matches using an empty
- /// // string argument name
- /// match m.subcommand() {
- /// Some((external, ext_m)) => {
- /// let ext_args: Vec<_> = ext_m.get_many::<String>("").unwrap().collect();
- /// assert_eq!(external, "subcmd");
- /// assert_eq!(ext_args, ["--option", "value", "-fff", "--flag"]);
- /// },
- /// _ => {},
- /// }
- /// ```
- ///
- /// [`subcommands`]: crate::Command::subcommand()
- pub fn external_subcommand_value_parser(
- mut self,
- parser: impl IntoResettable<super::ValueParser>,
- ) -> Self {
- self.external_value_parser = parser.into_resettable().into_option();
- self
- }
-
- /// Specifies that use of an argument prevents the use of [`subcommands`].
- ///
- /// By default `clap` allows arguments between subcommands such
- /// as `<cmd> [cmd_args] <subcmd> [subcmd_args] <subsubcmd> [subsubcmd_args]`.
- ///
- /// This setting disables that functionality and says that arguments can
- /// only follow the *final* subcommand. For instance using this setting
- /// makes only the following invocations possible:
- ///
- /// * `<cmd> <subcmd> <subsubcmd> [subsubcmd_args]`
- /// * `<cmd> <subcmd> [subcmd_args]`
- /// * `<cmd> [cmd_args]`
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::Command;
- /// Command::new("myprog")
- /// .args_conflicts_with_subcommands(true);
- /// ```
- ///
- /// [`subcommands`]: crate::Command::subcommand()
- pub fn args_conflicts_with_subcommands(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::ArgsNegateSubcommands)
- } else {
- self.unset_setting(AppSettings::ArgsNegateSubcommands)
- }
- }
-
- /// Prevent subcommands from being consumed as an arguments value.
- ///
- /// By default, if an option taking multiple values is followed by a subcommand, the
- /// subcommand will be parsed as another value.
- ///
- /// ```text
- /// cmd --foo val1 val2 subcommand
- /// --------- ----------
- /// values another value
- /// ```
- ///
- /// This setting instructs the parser to stop when encountering a subcommand instead of
- /// greedily consuming arguments.
- ///
- /// ```text
- /// cmd --foo val1 val2 subcommand
- /// --------- ----------
- /// values subcommand
- /// ```
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::{Command, Arg, ArgAction};
- /// let cmd = Command::new("cmd").subcommand(Command::new("sub")).arg(
- /// Arg::new("arg")
- /// .long("arg")
- /// .num_args(1..)
- /// .action(ArgAction::Set),
- /// );
- ///
- /// let matches = cmd
- /// .clone()
- /// .try_get_matches_from(&["cmd", "--arg", "1", "2", "3", "sub"])
- /// .unwrap();
- /// assert_eq!(
- /// matches.get_many::<String>("arg").unwrap().collect::<Vec<_>>(),
- /// &["1", "2", "3", "sub"]
- /// );
- /// assert!(matches.subcommand_matches("sub").is_none());
- ///
- /// let matches = cmd
- /// .subcommand_precedence_over_arg(true)
- /// .try_get_matches_from(&["cmd", "--arg", "1", "2", "3", "sub"])
- /// .unwrap();
- /// assert_eq!(
- /// matches.get_many::<String>("arg").unwrap().collect::<Vec<_>>(),
- /// &["1", "2", "3"]
- /// );
- /// assert!(matches.subcommand_matches("sub").is_some());
- /// ```
- pub fn subcommand_precedence_over_arg(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::SubcommandPrecedenceOverArg)
- } else {
- self.unset_setting(AppSettings::SubcommandPrecedenceOverArg)
- }
- }
-
- /// Allows [`subcommands`] to override all requirements of the parent command.
- ///
- /// For example, if you had a subcommand or top level application with a required argument
- /// that is only required as long as there is no subcommand present,
- /// using this setting would allow you to set those arguments to [`Arg::required(true)`]
- /// and yet receive no error so long as the user uses a valid subcommand instead.
- ///
- /// **NOTE:** This defaults to false (using subcommand does *not* negate requirements)
- ///
- /// # Examples
- ///
- /// This first example shows that it is an error to not use a required argument
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind};
- /// let err = Command::new("myprog")
- /// .subcommand_negates_reqs(true)
- /// .arg(Arg::new("opt").required(true))
- /// .subcommand(Command::new("test"))
- /// .try_get_matches_from(vec![
- /// "myprog"
- /// ]);
- /// assert!(err.is_err());
- /// assert_eq!(err.unwrap_err().kind(), ErrorKind::MissingRequiredArgument);
- /// # ;
- /// ```
- ///
- /// This next example shows that it is no longer error to not use a required argument if a
- /// valid subcommand is used.
- ///
- /// ```rust
- /// # use clap::{Command, Arg, error::ErrorKind};
- /// let noerr = Command::new("myprog")
- /// .subcommand_negates_reqs(true)
- /// .arg(Arg::new("opt").required(true))
- /// .subcommand(Command::new("test"))
- /// .try_get_matches_from(vec![
- /// "myprog", "test"
- /// ]);
- /// assert!(noerr.is_ok());
- /// # ;
- /// ```
- ///
- /// [`Arg::required(true)`]: crate::Arg::required()
- /// [`subcommands`]: crate::Command::subcommand()
- pub fn subcommand_negates_reqs(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::SubcommandsNegateReqs)
- } else {
- self.unset_setting(AppSettings::SubcommandsNegateReqs)
- }
- }
-
- /// Multiple-personality program dispatched on the binary name (`argv[0]`)
- ///
- /// A "multicall" executable is a single executable
- /// that contains a variety of applets,
- /// and decides which applet to run based on the name of the file.
- /// The executable can be called from different names by creating hard links
- /// or symbolic links to it.
- ///
- /// This is desirable for:
- /// - Easy distribution, a single binary that can install hardlinks to access the different
- /// personalities.
- /// - Minimal binary size by sharing common code (e.g. standard library, clap)
- /// - Custom shells or REPLs where there isn't a single top-level command
- ///
- /// Setting `multicall` will cause
- /// - `argv[0]` to be stripped to the base name and parsed as the first argument, as if
- /// [`Command::no_binary_name`][Command::no_binary_name] was set.
- /// - Help and errors to report subcommands as if they were the top-level command
- ///
- /// When the subcommand is not present, there are several strategies you may employ, depending
- /// on your needs:
- /// - Let the error percolate up normally
- /// - Print a specialized error message using the
- /// [`Error::context`][crate::Error::context]
- /// - Print the [help][Command::write_help] but this might be ambiguous
- /// - Disable `multicall` and re-parse it
- /// - Disable `multicall` and re-parse it with a specific subcommand
- ///
- /// When detecting the error condition, the [`ErrorKind`] isn't sufficient as a sub-subcommand
- /// might report the same error. Enable
- /// [`allow_external_subcommands`][Command::allow_external_subcommands] if you want to specifically
- /// get the unrecognized binary name.
- ///
- /// **NOTE:** Multicall can't be used with [`no_binary_name`] since they interpret
- /// the command name in incompatible ways.
- ///
- /// **NOTE:** The multicall command cannot have arguments.
- ///
- /// **NOTE:** Applets are slightly semantically different from subcommands,
- /// so it's recommended to use [`Command::subcommand_help_heading`] and
- /// [`Command::subcommand_value_name`] to change the descriptive text as above.
- ///
- /// # Examples
- ///
- /// `hostname` is an example of a multicall executable.
- /// Both `hostname` and `dnsdomainname` are provided by the same executable
- /// and which behaviour to use is based on the executable file name.
- ///
- /// This is desirable when the executable has a primary purpose
- /// but there is related functionality that would be convenient to provide
- /// and implement it to be in the same executable.
- ///
- /// The name of the cmd is essentially unused
- /// and may be the same as the name of a subcommand.
- ///
- /// The names of the immediate subcommands of the Command
- /// are matched against the basename of the first argument,
- /// which is conventionally the path of the executable.
- ///
- /// This does not allow the subcommand to be passed as the first non-path argument.
- ///
- /// ```rust
- /// # use clap::{Command, error::ErrorKind};
- /// let mut cmd = Command::new("hostname")
- /// .multicall(true)
- /// .subcommand(Command::new("hostname"))
- /// .subcommand(Command::new("dnsdomainname"));
- /// let m = cmd.try_get_matches_from_mut(&["/usr/bin/hostname", "dnsdomainname"]);
- /// assert!(m.is_err());
- /// assert_eq!(m.unwrap_err().kind(), ErrorKind::UnknownArgument);
- /// let m = cmd.get_matches_from(&["/usr/bin/dnsdomainname"]);
- /// assert_eq!(m.subcommand_name(), Some("dnsdomainname"));
- /// ```
- ///
- /// Busybox is another common example of a multicall executable
- /// with a subcommmand for each applet that can be run directly,
- /// e.g. with the `cat` applet being run by running `busybox cat`,
- /// or with `cat` as a link to the `busybox` binary.
- ///
- /// This is desirable when the launcher program has additional options
- /// or it is useful to run the applet without installing a symlink
- /// e.g. to test the applet without installing it
- /// or there may already be a command of that name installed.
- ///
- /// To make an applet usable as both a multicall link and a subcommand
- /// the subcommands must be defined both in the top-level Command
- /// and as subcommands of the "main" applet.
- ///
- /// ```rust
- /// # use clap::Command;
- /// fn applet_commands() -> [Command; 2] {
- /// [Command::new("true"), Command::new("false")]
- /// }
- /// let mut cmd = Command::new("busybox")
- /// .multicall(true)
- /// .subcommand(
- /// Command::new("busybox")
- /// .subcommand_value_name("APPLET")
- /// .subcommand_help_heading("APPLETS")
- /// .subcommands(applet_commands()),
- /// )
- /// .subcommands(applet_commands());
- /// // When called from the executable's canonical name
- /// // its applets can be matched as subcommands.
- /// let m = cmd.try_get_matches_from_mut(&["/usr/bin/busybox", "true"]).unwrap();
- /// assert_eq!(m.subcommand_name(), Some("busybox"));
- /// assert_eq!(m.subcommand().unwrap().1.subcommand_name(), Some("true"));
- /// // When called from a link named after an applet that applet is matched.
- /// let m = cmd.get_matches_from(&["/usr/bin/true"]);
- /// assert_eq!(m.subcommand_name(), Some("true"));
- /// ```
- ///
- /// [`no_binary_name`]: crate::Command::no_binary_name
- /// [`Command::subcommand_value_name`]: crate::Command::subcommand_value_name
- /// [`Command::subcommand_help_heading`]: crate::Command::subcommand_help_heading
- #[inline]
- pub fn multicall(self, yes: bool) -> Self {
- if yes {
- self.setting(AppSettings::Multicall)
- } else {
- self.unset_setting(AppSettings::Multicall)
- }
- }
-
- /// Sets the value name used for subcommands when printing usage and help.
- ///
- /// By default, this is "COMMAND".
- ///
- /// See also [`Command::subcommand_help_heading`]
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .subcommand(Command::new("sub1"))
- /// .print_help()
- /// # ;
- /// ```
- ///
- /// will produce
- ///
- /// ```text
- /// myprog
- ///
- /// Usage: myprog [COMMAND]
- ///
- /// Commands:
- /// help Print this message or the help of the given subcommand(s)
- /// sub1
- ///
- /// Options:
- /// -h, --help Print help
- /// -V, --version Print version
- /// ```
- ///
- /// but usage of `subcommand_value_name`
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .subcommand(Command::new("sub1"))
- /// .subcommand_value_name("THING")
- /// .print_help()
- /// # ;
- /// ```
- ///
- /// will produce
- ///
- /// ```text
- /// myprog
- ///
- /// Usage: myprog [THING]
- ///
- /// Commands:
- /// help Print this message or the help of the given subcommand(s)
- /// sub1
- ///
- /// Options:
- /// -h, --help Print help
- /// -V, --version Print version
- /// ```
- #[must_use]
- pub fn subcommand_value_name(mut self, value_name: impl IntoResettable<Str>) -> Self {
- self.subcommand_value_name = value_name.into_resettable().into_option();
- self
- }
-
- /// Sets the help heading used for subcommands when printing usage and help.
- ///
- /// By default, this is "Commands".
- ///
- /// See also [`Command::subcommand_value_name`]
- ///
- /// # Examples
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .subcommand(Command::new("sub1"))
- /// .print_help()
- /// # ;
- /// ```
- ///
- /// will produce
- ///
- /// ```text
- /// myprog
- ///
- /// Usage: myprog [COMMAND]
- ///
- /// Commands:
- /// help Print this message or the help of the given subcommand(s)
- /// sub1
- ///
- /// Options:
- /// -h, --help Print help
- /// -V, --version Print version
- /// ```
- ///
- /// but usage of `subcommand_help_heading`
- ///
- /// ```no_run
- /// # use clap::{Command, Arg};
- /// Command::new("myprog")
- /// .subcommand(Command::new("sub1"))
- /// .subcommand_help_heading("Things")
- /// .print_help()
- /// # ;
- /// ```
- ///
- /// will produce
- ///
- /// ```text
- /// myprog
- ///
- /// Usage: myprog [COMMAND]
- ///
- /// Things:
- /// help Print this message or the help of the given subcommand(s)
- /// sub1
- ///
- /// Options:
- /// -h, --help Print help
- /// -V, --version Print version
- /// ```
- #[must_use]
- pub fn subcommand_help_heading(mut self, heading: impl IntoResettable<Str>) -> Self {
- self.subcommand_heading = heading.into_resettable().into_option();
- self
- }
-}
-
-/// # Reflection
-impl Command {
- #[inline]
- #[cfg(feature = "usage")]
- pub(crate) fn get_usage_name(&self) -> Option<&str> {
- self.usage_name.as_deref()
- }
-
- /// Get the name of the binary.
- #[inline]
- pub fn get_display_name(&self) -> Option<&str> {
- self.display_name.as_deref()
- }
-
- /// Get the name of the binary.
- #[inline]
- pub fn get_bin_name(&self) -> Option<&str> {
- self.bin_name.as_deref()
- }
-
- /// Set binary name. Uses `&mut self` instead of `self`.
- pub fn set_bin_name(&mut self, name: impl Into<String>) {
- self.bin_name = Some(name.into());
- }
-
- /// Get the name of the cmd.
- #[inline]
- pub fn get_name(&self) -> &str {
- self.name.as_str()
- }
-
- #[inline]
- #[cfg(debug_assertions)]
- pub(crate) fn get_name_str(&self) -> &Str {
- &self.name
- }
-
- /// Get the version of the cmd.
- #[inline]
- pub fn get_version(&self) -> Option<&str> {
- self.version.as_deref()
- }
-
- /// Get the long version of the cmd.
- #[inline]
- pub fn get_long_version(&self) -> Option<&str> {
- self.long_version.as_deref()
- }
-
- /// Get the authors of the cmd.
- #[inline]
- pub fn get_author(&self) -> Option<&str> {
- self.author.as_deref()
- }
-
- /// Get the short flag of the subcommand.
- #[inline]
- pub fn get_short_flag(&self) -> Option<char> {
- self.short_flag
- }
-
- /// Get the long flag of the subcommand.
- #[inline]
- pub fn get_long_flag(&self) -> Option<&str> {
- self.long_flag.as_deref()
- }
-
- /// Get the help message specified via [`Command::about`].
- ///
- /// [`Command::about`]: Command::about()
- #[inline]
- pub fn get_about(&self) -> Option<&StyledStr> {
- self.about.as_ref()
- }
-
- /// Get the help message specified via [`Command::long_about`].
- ///
- /// [`Command::long_about`]: Command::long_about()
- #[inline]
- pub fn get_long_about(&self) -> Option<&StyledStr> {
- self.long_about.as_ref()
- }
-
- /// Get the custom section heading specified via [`Command::next_help_heading`].
- ///
- /// [`Command::help_heading`]: Command::help_heading()
- #[inline]
- pub fn get_next_help_heading(&self) -> Option<&str> {
- self.current_help_heading.as_deref()
- }
-
- /// Iterate through the *visible* aliases for this subcommand.
- #[inline]
- pub fn get_visible_aliases(&self) -> impl Iterator<Item = &str> + '_ {
- self.aliases
- .iter()
- .filter(|(_, vis)| *vis)
- .map(|a| a.0.as_str())
- }
-
- /// Iterate through the *visible* short aliases for this subcommand.
- #[inline]
- pub fn get_visible_short_flag_aliases(&self) -> impl Iterator<Item = char> + '_ {
- self.short_flag_aliases
- .iter()
- .filter(|(_, vis)| *vis)
- .map(|a| a.0)
- }
-
- /// Iterate through the *visible* long aliases for this subcommand.
- #[inline]
- pub fn get_visible_long_flag_aliases(&self) -> impl Iterator<Item = &str> + '_ {
- self.long_flag_aliases
- .iter()
- .filter(|(_, vis)| *vis)
- .map(|a| a.0.as_str())
- }
-
- /// Iterate through the set of *all* the aliases for this subcommand, both visible and hidden.
- #[inline]
- pub fn get_all_aliases(&self) -> impl Iterator<Item = &str> + '_ {
- self.aliases.iter().map(|a| a.0.as_str())
- }
-
- /// Iterate through the set of *all* the short aliases for this subcommand, both visible and hidden.
- #[inline]
- pub fn get_all_short_flag_aliases(&self) -> impl Iterator<Item = char> + '_ {
- self.short_flag_aliases.iter().map(|a| a.0)
- }
-
- /// Iterate through the set of *all* the long aliases for this subcommand, both visible and hidden.
- #[inline]
- pub fn get_all_long_flag_aliases(&self) -> impl Iterator<Item = &str> + '_ {
- self.long_flag_aliases.iter().map(|a| a.0.as_str())
- }
-
- #[inline]
- pub(crate) fn is_set(&self, s: AppSettings) -> bool {
- self.settings.is_set(s) || self.g_settings.is_set(s)
- }
-
- /// Should we color the output?
- pub fn get_color(&self) -> ColorChoice {
- debug!("Command::color: Color setting...");
-
- if cfg!(feature = "color") {
- if self.is_set(AppSettings::ColorNever) {
- debug!("Never");
- ColorChoice::Never
- } else if self.is_set(AppSettings::ColorAlways) {
- debug!("Always");
- ColorChoice::Always
- } else {
- debug!("Auto");
- ColorChoice::Auto
- }
- } else {
- ColorChoice::Never
- }
- }
-
- /// Iterate through the set of subcommands, getting a reference to each.
- #[inline]
- pub fn get_subcommands(&self) -> impl Iterator<Item = &Command> {
- self.subcommands.iter()
- }
-
- /// Iterate through the set of subcommands, getting a mutable reference to each.
- #[inline]
- pub fn get_subcommands_mut(&mut self) -> impl Iterator<Item = &mut Command> {
- self.subcommands.iter_mut()
- }
-
- /// Returns `true` if this `Command` has subcommands.
- #[inline]
- pub fn has_subcommands(&self) -> bool {
- !self.subcommands.is_empty()
- }
-
- /// Returns the help heading for listing subcommands.
- #[inline]
- pub fn get_subcommand_help_heading(&self) -> Option<&str> {
- self.subcommand_heading.as_deref()
- }
-
- /// Returns the subcommand value name.
- #[inline]
- pub fn get_subcommand_value_name(&self) -> Option<&str> {
- self.subcommand_value_name.as_deref()
- }
-
- /// Returns the help heading for listing subcommands.
- #[inline]
- pub fn get_before_help(&self) -> Option<&StyledStr> {
- self.before_help.as_ref()
- }
-
- /// Returns the help heading for listing subcommands.
- #[inline]
- pub fn get_before_long_help(&self) -> Option<&StyledStr> {
- self.before_long_help.as_ref()
- }
-
- /// Returns the help heading for listing subcommands.
- #[inline]
- pub fn get_after_help(&self) -> Option<&StyledStr> {
- self.after_help.as_ref()
- }
-
- /// Returns the help heading for listing subcommands.
- #[inline]
- pub fn get_after_long_help(&self) -> Option<&StyledStr> {
- self.after_long_help.as_ref()
- }
-
- /// Find subcommand such that its name or one of aliases equals `name`.
- ///
- /// This does not recurse through subcommands of subcommands.
- #[inline]
- pub fn find_subcommand(&self, name: impl AsRef<std::ffi::OsStr>) -> Option<&Command> {
- let name = name.as_ref();
- self.get_subcommands().find(|s| s.aliases_to(name))
- }
-
- /// Find subcommand such that its name or one of aliases equals `name`, returning
- /// a mutable reference to the subcommand.
- ///
- /// This does not recurse through subcommands of subcommands.
- #[inline]
- pub fn find_subcommand_mut(
- &mut self,
- name: impl AsRef<std::ffi::OsStr>,
- ) -> Option<&mut Command> {
- let name = name.as_ref();
- self.get_subcommands_mut().find(|s| s.aliases_to(name))
- }
-
- /// Iterate through the set of groups.
- #[inline]
- pub fn get_groups(&self) -> impl Iterator<Item = &ArgGroup> {
- self.groups.iter()
- }
-
- /// Iterate through the set of arguments.
- #[inline]
- pub fn get_arguments(&self) -> impl Iterator<Item = &Arg> {
- self.args.args()
- }
-
- /// Iterate through the *positionals* arguments.
- #[inline]
- pub fn get_positionals(&self) -> impl Iterator<Item = &Arg> {
- self.get_arguments().filter(|a| a.is_positional())
- }
-
- /// Iterate through the *options*.
- pub fn get_opts(&self) -> impl Iterator<Item = &Arg> {
- self.get_arguments()
- .filter(|a| a.is_takes_value_set() && !a.is_positional())
- }
-
- /// Get a list of all arguments the given argument conflicts with.
- ///
- /// If the provided argument is declared as global, the conflicts will be determined
- /// based on the propagation rules of global arguments.
- ///
- /// ### Panics
- ///
- /// If the given arg contains a conflict with an argument that is unknown to
- /// this `Command`.
- pub fn get_arg_conflicts_with(&self, arg: &Arg) -> Vec<&Arg> // FIXME: This could probably have been an iterator
- {
- if arg.is_global_set() {
- self.get_global_arg_conflicts_with(arg)
- } else {
- let mut result = Vec::new();
- for id in arg.blacklist.iter() {
- if let Some(arg) = self.find(id) {
- result.push(arg);
- } else if let Some(group) = self.find_group(id) {
- result.extend(
- self.unroll_args_in_group(&group.id)
- .iter()
- .map(|id| self.find(id).expect(INTERNAL_ERROR_MSG)),
- );
- } else {
- panic!("Command::get_arg_conflicts_with: The passed arg conflicts with an arg unknown to the cmd");
- }
- }
- result
- }
- }
-
- // Get a unique list of all arguments of all commands and continuous subcommands the given argument conflicts with.
- //
- // This behavior follows the propagation rules of global arguments.
- // It is useful for finding conflicts for arguments declared as global.
- //
- // ### Panics
- //
- // If the given arg contains a conflict with an argument that is unknown to
- // this `Command`.
- fn get_global_arg_conflicts_with(&self, arg: &Arg) -> Vec<&Arg> // FIXME: This could probably have been an iterator
- {
- arg.blacklist
- .iter()
- .map(|id| {
- self.args
- .args()
- .chain(
- self.get_subcommands_containing(arg)
- .iter()
- .flat_map(|x| x.args.args()),
- )
- .find(|arg| arg.get_id() == id)
- .expect(
- "Command::get_arg_conflicts_with: \
- The passed arg conflicts with an arg unknown to the cmd",
- )
- })
- .collect()
- }
-
- // Get a list of subcommands which contain the provided Argument
- //
- // This command will only include subcommands in its list for which the subcommands
- // parent also contains the Argument.
- //
- // This search follows the propagation rules of global arguments.
- // It is useful to finding subcommands, that have inherited a global argument.
- //
- // **NOTE:** In this case only Sucommand_1 will be included
- // Subcommand_1 (contains Arg)
- // Subcommand_1.1 (doesn't contain Arg)
- // Subcommand_1.1.1 (contains Arg)
- //
- fn get_subcommands_containing(&self, arg: &Arg) -> Vec<&Self> {
- let mut vec = std::vec::Vec::new();
- for idx in 0..self.subcommands.len() {
- if self.subcommands[idx]
- .args
- .args()
- .any(|ar| ar.get_id() == arg.get_id())
- {
- vec.push(&self.subcommands[idx]);
- vec.append(&mut self.subcommands[idx].get_subcommands_containing(arg));
- }
- }
- vec
- }
-
- /// Report whether [`Command::no_binary_name`] is set
- pub fn is_no_binary_name_set(&self) -> bool {
- self.is_set(AppSettings::NoBinaryName)
- }
-
- /// Report whether [`Command::ignore_errors`] is set
- pub(crate) fn is_ignore_errors_set(&self) -> bool {
- self.is_set(AppSettings::IgnoreErrors)
- }
-
- /// Report whether [`Command::dont_delimit_trailing_values`] is set
- pub fn is_dont_delimit_trailing_values_set(&self) -> bool {
- self.is_set(AppSettings::DontDelimitTrailingValues)
- }
-
- /// Report whether [`Command::disable_version_flag`] is set
- pub fn is_disable_version_flag_set(&self) -> bool {
- self.is_set(AppSettings::DisableVersionFlag)
- || (self.version.is_none() && self.long_version.is_none())
- }
-
- /// Report whether [`Command::propagate_version`] is set
- pub fn is_propagate_version_set(&self) -> bool {
- self.is_set(AppSettings::PropagateVersion)
- }
-
- /// Report whether [`Command::next_line_help`] is set
- pub fn is_next_line_help_set(&self) -> bool {
- self.is_set(AppSettings::NextLineHelp)
- }
-
- /// Report whether [`Command::disable_help_flag`] is set
- pub fn is_disable_help_flag_set(&self) -> bool {
- self.is_set(AppSettings::DisableHelpFlag)
- }
-
- /// Report whether [`Command::disable_help_subcommand`] is set
- pub fn is_disable_help_subcommand_set(&self) -> bool {
- self.is_set(AppSettings::DisableHelpSubcommand)
- }
-
- /// Report whether [`Command::disable_colored_help`] is set
- pub fn is_disable_colored_help_set(&self) -> bool {
- self.is_set(AppSettings::DisableColoredHelp)
- }
-
- /// Report whether [`Command::help_expected`] is set
- #[cfg(debug_assertions)]
- pub(crate) fn is_help_expected_set(&self) -> bool {
- self.is_set(AppSettings::HelpExpected)
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "This is now the default")
- )]
- pub fn is_dont_collapse_args_in_usage_set(&self) -> bool {
- true
- }
-
- /// Report whether [`Command::infer_long_args`] is set
- pub(crate) fn is_infer_long_args_set(&self) -> bool {
- self.is_set(AppSettings::InferLongArgs)
- }
-
- /// Report whether [`Command::infer_subcommands`] is set
- pub(crate) fn is_infer_subcommands_set(&self) -> bool {
- self.is_set(AppSettings::InferSubcommands)
- }
-
- /// Report whether [`Command::arg_required_else_help`] is set
- pub fn is_arg_required_else_help_set(&self) -> bool {
- self.is_set(AppSettings::ArgRequiredElseHelp)
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(
- since = "4.0.0",
- note = "Replaced with `Arg::is_allow_hyphen_values_set`"
- )
- )]
- pub(crate) fn is_allow_hyphen_values_set(&self) -> bool {
- self.is_set(AppSettings::AllowHyphenValues)
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(
- since = "4.0.0",
- note = "Replaced with `Arg::is_allow_negative_numbers_set`"
- )
- )]
- pub fn is_allow_negative_numbers_set(&self) -> bool {
- self.is_set(AppSettings::AllowNegativeNumbers)
- }
-
- #[doc(hidden)]
- #[cfg_attr(
- feature = "deprecated",
- deprecated(since = "4.0.0", note = "Replaced with `Arg::is_trailing_var_arg_set`")
- )]
- pub fn is_trailing_var_arg_set(&self) -> bool {
- self.is_set(AppSettings::TrailingVarArg)
- }
-
- /// Report whether [`Command::allow_missing_positional`] is set
- pub fn is_allow_missing_positional_set(&self) -> bool {
- self.is_set(AppSettings::AllowMissingPositional)
- }
-
- /// Report whether [`Command::hide`] is set
- pub fn is_hide_set(&self) -> bool {
- self.is_set(AppSettings::Hidden)
- }
-
- /// Report whether [`Command::subcommand_required`] is set
- pub fn is_subcommand_required_set(&self) -> bool {
- self.is_set(AppSettings::SubcommandRequired)
- }
-
- /// Report whether [`Command::allow_external_subcommands`] is set
- pub fn is_allow_external_subcommands_set(&self) -> bool {
- self.is_set(AppSettings::AllowExternalSubcommands)
- }
-
- /// Configured parser for values passed to an external subcommand
- ///
- /// # Example
- ///
- /// ```rust
- /// let cmd = clap::Command::new("raw")
- /// .external_subcommand_value_parser(clap::value_parser!(String));
- /// let value_parser = cmd.get_external_subcommand_value_parser();
- /// println!("{:?}", value_parser);
- /// ```
- pub fn get_external_subcommand_value_parser(&self) -> Option<&super::ValueParser> {
- if !self.is_allow_external_subcommands_set() {
- None
- } else {
- static DEFAULT: super::ValueParser = super::ValueParser::os_string();
- Some(self.external_value_parser.as_ref().unwrap_or(&DEFAULT))
- }
- }
-
- /// Report whether [`Command::args_conflicts_with_subcommands`] is set
- pub fn is_args_conflicts_with_subcommands_set(&self) -> bool {
- self.is_set(AppSettings::ArgsNegateSubcommands)
- }
-
- #[doc(hidden)]
- pub fn is_args_override_self(&self) -> bool {
- self.is_set(AppSettings::AllArgsOverrideSelf)
- }
-
- /// Report whether [`Command::subcommand_precedence_over_arg`] is set
- pub fn is_subcommand_precedence_over_arg_set(&self) -> bool {
- self.is_set(AppSettings::SubcommandPrecedenceOverArg)
- }
-
- /// Report whether [`Command::subcommand_negates_reqs`] is set
- pub fn is_subcommand_negates_reqs_set(&self) -> bool {
- self.is_set(AppSettings::SubcommandsNegateReqs)
- }
-
- /// Report whether [`Command::multicall`] is set
- pub fn is_multicall_set(&self) -> bool {
- self.is_set(AppSettings::Multicall)
- }
-}
-
-// Internally used only
-impl Command {
- pub(crate) fn get_override_usage(&self) -> Option<&StyledStr> {
- self.usage_str.as_ref()
- }
-
- pub(crate) fn get_override_help(&self) -> Option<&StyledStr> {
- self.help_str.as_ref()
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn get_help_template(&self) -> Option<&StyledStr> {
- self.template.as_ref()
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn get_term_width(&self) -> Option<usize> {
- self.term_w
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn get_max_term_width(&self) -> Option<usize> {
- self.max_w
- }
-
- pub(crate) fn get_replacement(&self, key: &str) -> Option<&[Str]> {
- self.replacers.get(key).map(|v| v.as_slice())
- }
-
- pub(crate) fn get_keymap(&self) -> &MKeyMap {
- &self.args
- }
-
- fn get_used_global_args(&self, matches: &ArgMatches, global_arg_vec: &mut Vec<Id>) {
- global_arg_vec.extend(
- self.args
- .args()
- .filter(|a| a.is_global_set())
- .map(|ga| ga.id.clone()),
- );
- if let Some((id, matches)) = matches.subcommand() {
- if let Some(used_sub) = self.find_subcommand(id) {
- used_sub.get_used_global_args(matches, global_arg_vec);
- }
- }
- }
-
- fn _do_parse(
- &mut self,
- raw_args: &mut clap_lex::RawArgs,
- args_cursor: clap_lex::ArgCursor,
- ) -> ClapResult<ArgMatches> {
- debug!("Command::_do_parse");
-
- // If there are global arguments, or settings we need to propagate them down to subcommands
- // before parsing in case we run into a subcommand
- self._build_self(false);
-
- let mut matcher = ArgMatcher::new(self);
-
- // do the real parsing
- let mut parser = Parser::new(self);
- if let Err(error) = parser.get_matches_with(&mut matcher, raw_args, args_cursor) {
- if self.is_set(AppSettings::IgnoreErrors) {
- debug!("Command::_do_parse: ignoring error: {}", error);
- } else {
- return Err(error);
- }
- }
-
- let mut global_arg_vec = Default::default();
- self.get_used_global_args(&matcher, &mut global_arg_vec);
-
- matcher.propagate_globals(&global_arg_vec);
-
- Ok(matcher.into_inner())
- }
-
- /// Prepare for introspecting on all included [`Command`]s
- ///
- /// Call this on the top-level [`Command`] when done building and before reading state for
- /// cases like completions, custom help output, etc.
- pub fn build(&mut self) {
- self._build_recursive(true);
- self._build_bin_names_internal();
- }
-
- pub(crate) fn _build_recursive(&mut self, expand_help_tree: bool) {
- self._build_self(expand_help_tree);
- for subcmd in self.get_subcommands_mut() {
- subcmd._build_recursive(expand_help_tree);
- }
- }
-
- pub(crate) fn _build_self(&mut self, expand_help_tree: bool) {
- debug!("Command::_build: name={:?}", self.get_name());
- if !self.settings.is_set(AppSettings::Built) {
- // Make sure all the globally set flags apply to us as well
- self.settings = self.settings | self.g_settings;
-
- if self.is_multicall_set() {
- self.settings.insert(AppSettings::SubcommandRequired.into());
- self.settings.insert(AppSettings::DisableHelpFlag.into());
- self.settings.insert(AppSettings::DisableVersionFlag.into());
- }
- if !cfg!(feature = "help") && self.get_override_help().is_none() {
- self.settings.insert(AppSettings::DisableHelpFlag.into());
- self.settings
- .insert(AppSettings::DisableHelpSubcommand.into());
- }
- if self.is_set(AppSettings::ArgsNegateSubcommands) {
- self.settings
- .insert(AppSettings::SubcommandsNegateReqs.into());
- }
- if self.external_value_parser.is_some() {
- self.settings
- .insert(AppSettings::AllowExternalSubcommands.into());
- }
- if !self.has_subcommands() {
- self.settings
- .insert(AppSettings::DisableHelpSubcommand.into());
- }
-
- self._propagate();
- self._check_help_and_version(expand_help_tree);
- self._propagate_global_args();
-
- let mut pos_counter = 1;
- let hide_pv = self.is_set(AppSettings::HidePossibleValues);
- for a in self.args.args_mut() {
- // Fill in the groups
- for g in &a.groups {
- if let Some(ag) = self.groups.iter_mut().find(|grp| grp.id == *g) {
- ag.args.push(a.get_id().clone());
- } else {
- let mut ag = ArgGroup::new(g);
- ag.args.push(a.get_id().clone());
- self.groups.push(ag);
- }
- }
-
- // Figure out implied settings
- a._build();
- if hide_pv && a.is_takes_value_set() {
- a.settings.set(ArgSettings::HidePossibleValues);
- }
- if a.is_positional() && a.index.is_none() {
- a.index = Some(pos_counter);
- pos_counter += 1;
- }
- }
-
- self.args._build();
-
- #[allow(deprecated)]
- {
- let highest_idx = self
- .get_keymap()
- .keys()
- .filter_map(|x| {
- if let crate::mkeymap::KeyType::Position(n) = x {
- Some(*n)
- } else {
- None
- }
- })
- .max()
- .unwrap_or(0);
- let is_trailing_var_arg_set = self.is_trailing_var_arg_set();
- let is_allow_hyphen_values_set = self.is_allow_hyphen_values_set();
- let is_allow_negative_numbers_set = self.is_allow_negative_numbers_set();
- for arg in self.args.args_mut() {
- if is_allow_hyphen_values_set && arg.is_takes_value_set() {
- arg.settings.insert(ArgSettings::AllowHyphenValues.into());
- }
- if is_allow_negative_numbers_set && arg.is_takes_value_set() {
- arg.settings
- .insert(ArgSettings::AllowNegativeNumbers.into());
- }
- if is_trailing_var_arg_set && arg.get_index() == Some(highest_idx) {
- arg.settings.insert(ArgSettings::TrailingVarArg.into());
- }
- }
- }
-
- #[cfg(debug_assertions)]
- assert_app(self);
- self.settings.set(AppSettings::Built);
- } else {
- debug!("Command::_build: already built");
- }
- }
-
- pub(crate) fn _build_subcommand(&mut self, name: &str) -> Option<&mut Self> {
- use std::fmt::Write;
-
- let mut mid_string = String::from(" ");
- #[cfg(feature = "usage")]
- if !self.is_subcommand_negates_reqs_set() && !self.is_args_conflicts_with_subcommands_set()
- {
- let reqs = Usage::new(self).get_required_usage_from(&[], None, true); // maybe Some(m)
-
- for s in &reqs {
- mid_string.push_str(&s.to_string());
- mid_string.push(' ');
- }
- }
- let is_multicall_set = self.is_multicall_set();
-
- let sc = some!(self.subcommands.iter_mut().find(|s| s.name == name));
-
- // Display subcommand name, short and long in usage
- let mut sc_names = String::new();
- sc_names.push_str(sc.name.as_str());
- let mut flag_subcmd = false;
- if let Some(l) = sc.get_long_flag() {
- write!(sc_names, "|--{}", l).unwrap();
- flag_subcmd = true;
- }
- if let Some(s) = sc.get_short_flag() {
- write!(sc_names, "|-{}", s).unwrap();
- flag_subcmd = true;
- }
-
- if flag_subcmd {
- sc_names = format!("{{{}}}", sc_names);
- }
-
- let usage_name = self
- .bin_name
- .as_ref()
- .map(|bin_name| format!("{}{}{}", bin_name, mid_string, sc_names))
- .unwrap_or(sc_names);
- sc.usage_name = Some(usage_name);
-
- // bin_name should be parent's bin_name + [<reqs>] + the sc's name separated by
- // a space
- let bin_name = format!(
- "{}{}{}",
- self.bin_name.as_deref().unwrap_or_default(),
- if self.bin_name.is_some() { " " } else { "" },
- &*sc.name
- );
- debug!(
- "Command::_build_subcommand Setting bin_name of {} to {:?}",
- sc.name, bin_name
- );
- sc.bin_name = Some(bin_name);
-
- if sc.display_name.is_none() {
- let self_display_name = if is_multicall_set {
- self.display_name.as_deref().unwrap_or("")
- } else {
- self.display_name.as_deref().unwrap_or(&self.name)
- };
- let display_name = format!(
- "{}{}{}",
- self_display_name,
- if !self_display_name.is_empty() {
- "-"
- } else {
- ""
- },
- &*sc.name
- );
- debug!(
- "Command::_build_subcommand Setting display_name of {} to {:?}",
- sc.name, display_name
- );
- sc.display_name = Some(display_name);
- }
-
- // Ensure all args are built and ready to parse
- sc._build_self(false);
-
- Some(sc)
- }
-
- fn _build_bin_names_internal(&mut self) {
- debug!("Command::_build_bin_names");
-
- if !self.is_set(AppSettings::BinNameBuilt) {
- let mut mid_string = String::from(" ");
- #[cfg(feature = "usage")]
- if !self.is_subcommand_negates_reqs_set()
- && !self.is_args_conflicts_with_subcommands_set()
- {
- let reqs = Usage::new(self).get_required_usage_from(&[], None, true); // maybe Some(m)
-
- for s in &reqs {
- mid_string.push_str(&s.to_string());
- mid_string.push(' ');
- }
- }
- let is_multicall_set = self.is_multicall_set();
-
- let self_bin_name = if is_multicall_set {
- self.bin_name.as_deref().unwrap_or("")
- } else {
- self.bin_name.as_deref().unwrap_or(&self.name)
- }
- .to_owned();
-
- for mut sc in &mut self.subcommands {
- debug!("Command::_build_bin_names:iter: bin_name set...");
-
- if sc.usage_name.is_none() {
- use std::fmt::Write;
- // Display subcommand name, short and long in usage
- let mut sc_names = String::new();
- sc_names.push_str(sc.name.as_str());
- let mut flag_subcmd = false;
- if let Some(l) = sc.get_long_flag() {
- write!(sc_names, "|--{}", l).unwrap();
- flag_subcmd = true;
- }
- if let Some(s) = sc.get_short_flag() {
- write!(sc_names, "|-{}", s).unwrap();
- flag_subcmd = true;
- }
-
- if flag_subcmd {
- sc_names = format!("{{{}}}", sc_names);
- }
-
- let usage_name = format!("{}{}{}", self_bin_name, mid_string, sc_names);
- debug!(
- "Command::_build_bin_names:iter: Setting usage_name of {} to {:?}",
- sc.name, usage_name
- );
- sc.usage_name = Some(usage_name);
- } else {
- debug!(
- "Command::_build_bin_names::iter: Using existing usage_name of {} ({:?})",
- sc.name, sc.usage_name
- );
- }
-
- if sc.bin_name.is_none() {
- let bin_name = format!(
- "{}{}{}",
- self_bin_name,
- if !self_bin_name.is_empty() { " " } else { "" },
- &*sc.name
- );
- debug!(
- "Command::_build_bin_names:iter: Setting bin_name of {} to {:?}",
- sc.name, bin_name
- );
- sc.bin_name = Some(bin_name);
- } else {
- debug!(
- "Command::_build_bin_names::iter: Using existing bin_name of {} ({:?})",
- sc.name, sc.bin_name
- );
- }
-
- if sc.display_name.is_none() {
- let self_display_name = if is_multicall_set {
- self.display_name.as_deref().unwrap_or("")
- } else {
- self.display_name.as_deref().unwrap_or(&self.name)
- };
- let display_name = format!(
- "{}{}{}",
- self_display_name,
- if !self_display_name.is_empty() {
- "-"
- } else {
- ""
- },
- &*sc.name
- );
- debug!(
- "Command::_build_bin_names:iter: Setting display_name of {} to {:?}",
- sc.name, display_name
- );
- sc.display_name = Some(display_name);
- } else {
- debug!(
- "Command::_build_bin_names::iter: Using existing display_name of {} ({:?})",
- sc.name, sc.display_name
- );
- }
-
- sc._build_bin_names_internal();
- }
- self.set(AppSettings::BinNameBuilt);
- } else {
- debug!("Command::_build_bin_names: already built");
- }
- }
-
- pub(crate) fn _panic_on_missing_help(&self, help_required_globally: bool) {
- if self.is_set(AppSettings::HelpExpected) || help_required_globally {
- let args_missing_help: Vec<Id> = self
- .args
- .args()
- .filter(|arg| arg.get_help().is_none() && arg.get_long_help().is_none())
- .map(|arg| arg.get_id().clone())
- .collect();
-
- debug_assert!(args_missing_help.is_empty(),
- "Command::help_expected is enabled for the Command {}, but at least one of its arguments does not have either `help` or `long_help` set. List of such arguments: {}",
- self.name,
- args_missing_help.join(", ")
- );
- }
-
- for sub_app in &self.subcommands {
- sub_app._panic_on_missing_help(help_required_globally);
- }
- }
-
- #[cfg(debug_assertions)]
- pub(crate) fn two_args_of<F>(&self, condition: F) -> Option<(&Arg, &Arg)>
- where
- F: Fn(&Arg) -> bool,
- {
- two_elements_of(self.args.args().filter(|a: &&Arg| condition(a)))
- }
-
- // just in case
- #[allow(unused)]
- fn two_groups_of<F>(&self, condition: F) -> Option<(&ArgGroup, &ArgGroup)>
- where
- F: Fn(&ArgGroup) -> bool,
- {
- two_elements_of(self.groups.iter().filter(|a| condition(a)))
- }
-
- /// Propagate global args
- pub(crate) fn _propagate_global_args(&mut self) {
- debug!("Command::_propagate_global_args:{}", self.name);
-
- let autogenerated_help_subcommand = !self.is_disable_help_subcommand_set();
-
- for sc in &mut self.subcommands {
- if sc.get_name() == "help" && autogenerated_help_subcommand {
- // Avoid propagating args to the autogenerated help subtrees used in completion.
- // This prevents args from showing up during help completions like
- // `myapp help subcmd <TAB>`, which should only suggest subcommands and not args,
- // while still allowing args to show up properly on the generated help message.
- continue;
- }
-
- for a in self.args.args().filter(|a| a.is_global_set()) {
- if sc.find(&a.id).is_some() {
- debug!(
- "Command::_propagate skipping {:?} to {}, already exists",
- a.id,
- sc.get_name(),
- );
- continue;
- }
-
- debug!(
- "Command::_propagate pushing {:?} to {}",
- a.id,
- sc.get_name(),
- );
- sc.args.push(a.clone());
- }
- }
- }
-
- /// Propagate settings
- pub(crate) fn _propagate(&mut self) {
- debug!("Command::_propagate:{}", self.name);
- let mut subcommands = std::mem::take(&mut self.subcommands);
- for sc in &mut subcommands {
- self._propagate_subcommand(sc);
- }
- self.subcommands = subcommands;
- }
-
- fn _propagate_subcommand(&self, sc: &mut Self) {
- // We have to create a new scope in order to tell rustc the borrow of `sc` is
- // done and to recursively call this method
- {
- if self.settings.is_set(AppSettings::PropagateVersion) {
- if let Some(version) = self.version.as_ref() {
- sc.version.get_or_insert_with(|| version.clone());
- }
- if let Some(long_version) = self.long_version.as_ref() {
- sc.long_version.get_or_insert_with(|| long_version.clone());
- }
- }
-
- sc.settings = sc.settings | self.g_settings;
- sc.g_settings = sc.g_settings | self.g_settings;
- sc.term_w = self.term_w;
- sc.max_w = self.max_w;
- }
- }
-
- pub(crate) fn _check_help_and_version(&mut self, expand_help_tree: bool) {
- debug!(
- "Command::_check_help_and_version:{} expand_help_tree={}",
- self.name, expand_help_tree
- );
-
- self.long_help_exists = self.long_help_exists_();
-
- if !self.is_disable_help_flag_set() {
- debug!("Command::_check_help_and_version: Building default --help");
- let mut arg = Arg::new(Id::HELP)
- .short('h')
- .long("help")
- .action(ArgAction::Help);
- if self.long_help_exists {
- arg = arg
- .help("Print help (see more with '--help')")
- .long_help("Print help (see a summary with '-h')");
- } else {
- arg = arg.help("Print help");
- }
- // Avoiding `arg_internal` to not be sensitive to `next_help_heading` /
- // `next_display_order`
- self.args.push(arg);
- }
- if !self.is_disable_version_flag_set() {
- debug!("Command::_check_help_and_version: Building default --version");
- let arg = Arg::new(Id::VERSION)
- .short('V')
- .long("version")
- .action(ArgAction::Version)
- .help("Print version");
- // Avoiding `arg_internal` to not be sensitive to `next_help_heading` /
- // `next_display_order`
- self.args.push(arg);
- }
-
- if !self.is_set(AppSettings::DisableHelpSubcommand) {
- debug!("Command::_check_help_and_version: Building help subcommand");
- let help_about = "Print this message or the help of the given subcommand(s)";
-
- let mut help_subcmd = if expand_help_tree {
- // Slow code path to recursively clone all other subcommand subtrees under help
- let help_subcmd = Command::new("help")
- .about(help_about)
- .global_setting(AppSettings::DisableHelpSubcommand)
- .subcommands(self.get_subcommands().map(Command::_copy_subtree_for_help));
-
- let mut help_help_subcmd = Command::new("help").about(help_about);
- help_help_subcmd.version = None;
- help_help_subcmd.long_version = None;
- help_help_subcmd = help_help_subcmd
- .setting(AppSettings::DisableHelpFlag)
- .setting(AppSettings::DisableVersionFlag);
-
- help_subcmd.subcommand(help_help_subcmd)
- } else {
- Command::new("help").about(help_about).arg(
- Arg::new("subcommand")
- .action(ArgAction::Append)
- .num_args(..)
- .value_name("COMMAND")
- .help("Print help for the subcommand(s)"),
- )
- };
- self._propagate_subcommand(&mut help_subcmd);
-
- // The parser acts like this is set, so let's set it so we don't falsely
- // advertise it to the user
- help_subcmd.version = None;
- help_subcmd.long_version = None;
- help_subcmd = help_subcmd
- .setting(AppSettings::DisableHelpFlag)
- .setting(AppSettings::DisableVersionFlag)
- .unset_global_setting(AppSettings::PropagateVersion);
-
- self.subcommands.push(help_subcmd);
- }
- }
-
- fn _copy_subtree_for_help(&self) -> Command {
- let mut cmd = Command::new(self.name.clone())
- .hide(self.is_hide_set())
- .global_setting(AppSettings::DisableHelpFlag)
- .global_setting(AppSettings::DisableVersionFlag)
- .subcommands(self.get_subcommands().map(Command::_copy_subtree_for_help));
- if self.get_about().is_some() {
- cmd = cmd.about(self.get_about().unwrap().clone());
- }
- cmd
- }
-
- pub(crate) fn _render_version(&self, use_long: bool) -> String {
- debug!("Command::_render_version");
-
- let ver = if use_long {
- self.long_version
- .as_deref()
- .or(self.version.as_deref())
- .unwrap_or_default()
- } else {
- self.version
- .as_deref()
- .or(self.long_version.as_deref())
- .unwrap_or_default()
- };
- let display_name = self.get_display_name().unwrap_or_else(|| self.get_name());
- format!("{} {}\n", display_name, ver)
- }
-
- pub(crate) fn format_group(&self, g: &Id) -> StyledStr {
- let g_string = self
- .unroll_args_in_group(g)
- .iter()
- .filter_map(|x| self.find(x))
- .map(|x| {
- if x.is_positional() {
- // Print val_name for positional arguments. e.g. <file_name>
- x.name_no_brackets()
- } else {
- // Print usage string for flags arguments, e.g. <--help>
- x.to_string()
- }
- })
- .collect::<Vec<_>>()
- .join("|");
- let mut styled = StyledStr::new();
- styled.none("<");
- styled.none(g_string);
- styled.none(">");
- styled
- }
-}
-
-/// A workaround:
-/// <https://github.com/rust-lang/rust/issues/34511#issuecomment-373423999>
-pub(crate) trait Captures<'a> {}
-impl<'a, T> Captures<'a> for T {}
-
-// Internal Query Methods
-impl Command {
- /// Iterate through the *flags* & *options* arguments.
- #[cfg(any(feature = "usage", feature = "help"))]
- pub(crate) fn get_non_positionals(&self) -> impl Iterator<Item = &Arg> {
- self.get_arguments().filter(|a| !a.is_positional())
- }
-
- pub(crate) fn find(&self, arg_id: &Id) -> Option<&Arg> {
- self.args.args().find(|a| a.get_id() == arg_id)
- }
-
- #[inline]
- pub(crate) fn contains_short(&self, s: char) -> bool {
- debug_assert!(
- self.is_set(AppSettings::Built),
- "If Command::_build hasn't been called, manually search through Arg shorts"
- );
-
- self.args.contains(s)
- }
-
- #[inline]
- pub(crate) fn set(&mut self, s: AppSettings) {
- self.settings.set(s)
- }
-
- #[inline]
- pub(crate) fn has_positionals(&self) -> bool {
- self.get_positionals().next().is_some()
- }
-
- #[cfg(any(feature = "usage", feature = "help"))]
- pub(crate) fn has_visible_subcommands(&self) -> bool {
- self.subcommands
- .iter()
- .any(|sc| sc.name != "help" && !sc.is_set(AppSettings::Hidden))
- }
-
- /// Check if this subcommand can be referred to as `name`. In other words,
- /// check if `name` is the name of this subcommand or is one of its aliases.
- #[inline]
- pub(crate) fn aliases_to(&self, name: impl AsRef<std::ffi::OsStr>) -> bool {
- let name = name.as_ref();
- self.get_name() == name || self.get_all_aliases().any(|alias| alias == name)
- }
-
- /// Check if this subcommand can be referred to as `name`. In other words,
- /// check if `name` is the name of this short flag subcommand or is one of its short flag aliases.
- #[inline]
- pub(crate) fn short_flag_aliases_to(&self, flag: char) -> bool {
- Some(flag) == self.short_flag
- || self.get_all_short_flag_aliases().any(|alias| flag == alias)
- }
-
- /// Check if this subcommand can be referred to as `name`. In other words,
- /// check if `name` is the name of this long flag subcommand or is one of its long flag aliases.
- #[inline]
- pub(crate) fn long_flag_aliases_to(&self, flag: &str) -> bool {
- match self.long_flag.as_ref() {
- Some(long_flag) => {
- long_flag == flag || self.get_all_long_flag_aliases().any(|alias| alias == flag)
- }
- None => self.get_all_long_flag_aliases().any(|alias| alias == flag),
- }
- }
-
- #[cfg(debug_assertions)]
- pub(crate) fn id_exists(&self, id: &Id) -> bool {
- self.args.args().any(|x| x.get_id() == id) || self.groups.iter().any(|x| x.id == *id)
- }
-
- /// Iterate through the groups this arg is member of.
- pub(crate) fn groups_for_arg<'a>(&'a self, arg: &Id) -> impl Iterator<Item = Id> + 'a {
- debug!("Command::groups_for_arg: id={:?}", arg);
- let arg = arg.clone();
- self.groups
- .iter()
- .filter(move |grp| grp.args.iter().any(|a| a == &arg))
- .map(|grp| grp.id.clone())
- }
-
- pub(crate) fn find_group(&self, group_id: &Id) -> Option<&ArgGroup> {
- self.groups.iter().find(|g| g.id == *group_id)
- }
-
- /// Iterate through all the names of all subcommands (not recursively), including aliases.
- /// Used for suggestions.
- pub(crate) fn all_subcommand_names(&self) -> impl Iterator<Item = &str> + Captures {
- self.get_subcommands().flat_map(|sc| {
- let name = sc.get_name();
- let aliases = sc.get_all_aliases();
- std::iter::once(name).chain(aliases)
- })
- }
-
- pub(crate) fn required_graph(&self) -> ChildGraph<Id> {
- let mut reqs = ChildGraph::with_capacity(5);
- for a in self.args.args().filter(|a| a.is_required_set()) {
- reqs.insert(a.get_id().clone());
- }
- for group in &self.groups {
- if group.required {
- let idx = reqs.insert(group.id.clone());
- for a in &group.requires {
- reqs.insert_child(idx, a.clone());
- }
- }
- }
-
- reqs
- }
-
- pub(crate) fn unroll_args_in_group(&self, group: &Id) -> Vec<Id> {
- debug!("Command::unroll_args_in_group: group={:?}", group);
- let mut g_vec = vec![group];
- let mut args = vec![];
-
- while let Some(g) = g_vec.pop() {
- for n in self
- .groups
- .iter()
- .find(|grp| grp.id == *g)
- .expect(INTERNAL_ERROR_MSG)
- .args
- .iter()
- {
- debug!("Command::unroll_args_in_group:iter: entity={:?}", n);
- if !args.contains(n) {
- if self.find(n).is_some() {
- debug!("Command::unroll_args_in_group:iter: this is an arg");
- args.push(n.clone())
- } else {
- debug!("Command::unroll_args_in_group:iter: this is a group");
- g_vec.push(n);
- }
- }
- }
- }
-
- args
- }
-
- pub(crate) fn unroll_arg_requires<F>(&self, func: F, arg: &Id) -> Vec<Id>
- where
- F: Fn(&(ArgPredicate, Id)) -> Option<Id>,
- {
- let mut processed = vec![];
- let mut r_vec = vec![arg];
- let mut args = vec![];
-
- while let Some(a) = r_vec.pop() {
- if processed.contains(&a) {
- continue;
- }
-
- processed.push(a);
-
- if let Some(arg) = self.find(a) {
- for r in arg.requires.iter().filter_map(&func) {
- if let Some(req) = self.find(&r) {
- if !req.requires.is_empty() {
- r_vec.push(req.get_id())
- }
- }
- args.push(r);
- }
- }
- }
-
- args
- }
-
- /// Find a flag subcommand name by short flag or an alias
- pub(crate) fn find_short_subcmd(&self, c: char) -> Option<&str> {
- self.get_subcommands()
- .find(|sc| sc.short_flag_aliases_to(c))
- .map(|sc| sc.get_name())
- }
-
- /// Find a flag subcommand name by long flag or an alias
- pub(crate) fn find_long_subcmd(&self, long: &str) -> Option<&str> {
- self.get_subcommands()
- .find(|sc| sc.long_flag_aliases_to(long))
- .map(|sc| sc.get_name())
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn get_display_order(&self) -> usize {
- self.disp_ord.unwrap_or(999)
- }
-
- pub(crate) fn write_help_err(&self, mut use_long: bool) -> StyledStr {
- debug!(
- "Command::write_help_err: {}, use_long={:?}",
- self.get_display_name().unwrap_or_else(|| self.get_name()),
- use_long && self.long_help_exists(),
- );
-
- use_long = use_long && self.long_help_exists();
- let usage = Usage::new(self);
-
- let mut styled = StyledStr::new();
- write_help(&mut styled, self, &usage, use_long);
-
- styled
- }
-
- pub(crate) fn write_version_err(&self, use_long: bool) -> StyledStr {
- let msg = self._render_version(use_long);
- let mut styled = StyledStr::new();
- styled.none(msg);
- styled
- }
-
- pub(crate) fn long_help_exists(&self) -> bool {
- debug!("Command::long_help_exists: {}", self.long_help_exists);
- self.long_help_exists
- }
-
- fn long_help_exists_(&self) -> bool {
- debug!("Command::long_help_exists");
- // In this case, both must be checked. This allows the retention of
- // original formatting, but also ensures that the actual -h or --help
- // specified by the user is sent through. If hide_short_help is not included,
- // then items specified with hidden_short_help will also be hidden.
- let should_long = |v: &Arg| {
- v.get_long_help().is_some()
- || v.is_hide_long_help_set()
- || v.is_hide_short_help_set()
- || v.get_possible_values()
- .iter()
- .any(PossibleValue::should_show_help)
- };
-
- // Subcommands aren't checked because we prefer short help for them, deferring to
- // `cmd subcmd --help` for more.
- self.get_long_about().is_some()
- || self.get_before_long_help().is_some()
- || self.get_after_long_help().is_some()
- || self.get_arguments().any(should_long)
- }
-
- // Should we color the help?
- pub(crate) fn color_help(&self) -> ColorChoice {
- #[cfg(feature = "color")]
- if self.is_disable_colored_help_set() {
- return ColorChoice::Never;
- }
-
- self.get_color()
- }
-}
-
-impl Default for Command {
- fn default() -> Self {
- Self {
- name: Default::default(),
- long_flag: Default::default(),
- short_flag: Default::default(),
- display_name: Default::default(),
- bin_name: Default::default(),
- author: Default::default(),
- version: Default::default(),
- long_version: Default::default(),
- about: Default::default(),
- long_about: Default::default(),
- before_help: Default::default(),
- before_long_help: Default::default(),
- after_help: Default::default(),
- after_long_help: Default::default(),
- aliases: Default::default(),
- short_flag_aliases: Default::default(),
- long_flag_aliases: Default::default(),
- usage_str: Default::default(),
- usage_name: Default::default(),
- help_str: Default::default(),
- disp_ord: Default::default(),
- term_w: Default::default(),
- max_w: Default::default(),
- #[cfg(feature = "help")]
- template: Default::default(),
- settings: Default::default(),
- g_settings: Default::default(),
- args: Default::default(),
- subcommands: Default::default(),
- replacers: Default::default(),
- groups: Default::default(),
- current_help_heading: Default::default(),
- current_disp_ord: Some(0),
- subcommand_value_name: Default::default(),
- subcommand_heading: Default::default(),
- external_value_parser: Default::default(),
- long_help_exists: false,
- }
- }
-}
-
-impl Index<&'_ Id> for Command {
- type Output = Arg;
-
- fn index(&self, key: &Id) -> &Self::Output {
- self.find(key).expect(INTERNAL_ERROR_MSG)
- }
-}
-
-impl From<&'_ Command> for Command {
- fn from(cmd: &'_ Command) -> Self {
- cmd.clone()
- }
-}
-
-impl fmt::Display for Command {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- write!(f, "{}", self.name)
- }
-}
-
-fn two_elements_of<I, T>(mut iter: I) -> Option<(T, T)>
-where
- I: Iterator<Item = T>,
-{
- let first = iter.next();
- let second = iter.next();
-
- match (first, second) {
- (Some(first), Some(second)) => Some((first, second)),
- _ => None,
- }
-}
-
-#[test]
-fn check_auto_traits() {
- static_assertions::assert_impl_all!(Command: Send, Sync, Unpin);
-}
diff --git a/vendor/clap/src/builder/debug_asserts.rs b/vendor/clap/src/builder/debug_asserts.rs
deleted file mode 100644
index bfebbb4c4..000000000
--- a/vendor/clap/src/builder/debug_asserts.rs
+++ /dev/null
@@ -1,887 +0,0 @@
-use std::cmp::Ordering;
-
-use clap_lex::RawOsStr;
-
-use crate::builder::OsStr;
-use crate::builder::ValueRange;
-use crate::mkeymap::KeyType;
-use crate::util::FlatSet;
-use crate::util::Id;
-use crate::ArgAction;
-use crate::INTERNAL_ERROR_MSG;
-use crate::{Arg, Command, ValueHint};
-
-pub(crate) fn assert_app(cmd: &Command) {
- debug!("Command::_debug_asserts");
-
- let mut short_flags = vec![];
- let mut long_flags = vec![];
-
- // Invalid version flag settings
- if cmd.get_version().is_none() && cmd.get_long_version().is_none() {
- // PropagateVersion is meaningless if there is no version
- assert!(
- !cmd.is_propagate_version_set(),
- "Command {}: No version information via Command::version or Command::long_version to propagate",
- cmd.get_name(),
- );
-
- // Used `Command::mut_arg("version", ..) but did not provide any version information to display
- let version_needed = cmd
- .get_arguments()
- .filter(|x| matches!(x.get_action(), ArgAction::Version))
- .map(|x| x.get_id())
- .collect::<Vec<_>>();
-
- assert_eq!(version_needed, Vec::<&str>::new(), "Command {}: `ArgAction::Version` used without providing Command::version or Command::long_version"
- ,cmd.get_name()
- );
- }
-
- for sc in cmd.get_subcommands() {
- if let Some(s) = sc.get_short_flag().as_ref() {
- short_flags.push(Flag::Command(format!("-{}", s), sc.get_name()));
- }
-
- for short_alias in sc.get_all_short_flag_aliases() {
- short_flags.push(Flag::Command(format!("-{}", short_alias), sc.get_name()));
- }
-
- if let Some(l) = sc.get_long_flag().as_ref() {
- assert!(!l.starts_with('-'), "Command {}: long_flag {:?} must not start with a `-`, that will be handled by the parser", sc.get_name(), l);
- long_flags.push(Flag::Command(format!("--{}", l), sc.get_name()));
- }
-
- for long_alias in sc.get_all_long_flag_aliases() {
- long_flags.push(Flag::Command(format!("--{}", long_alias), sc.get_name()));
- }
- }
-
- for arg in cmd.get_arguments() {
- assert_arg(arg);
-
- assert!(
- !cmd.is_multicall_set(),
- "Command {}: Arguments like {} cannot be set on a multicall command",
- cmd.get_name(),
- arg.get_id()
- );
-
- if let Some(s) = arg.get_short() {
- short_flags.push(Flag::Arg(format!("-{}", s), arg.get_id().as_str()));
- }
-
- for (short_alias, _) in &arg.short_aliases {
- short_flags.push(Flag::Arg(
- format!("-{}", short_alias),
- arg.get_id().as_str(),
- ));
- }
-
- if let Some(l) = arg.get_long() {
- assert!(!l.starts_with('-'), "Argument {}: long {:?} must not start with a `-`, that will be handled by the parser", arg.get_id(), l);
- long_flags.push(Flag::Arg(format!("--{}", l), arg.get_id().as_str()));
- }
-
- for (long_alias, _) in &arg.aliases {
- long_flags.push(Flag::Arg(
- format!("--{}", long_alias),
- arg.get_id().as_str(),
- ));
- }
-
- // Name conflicts
- if let Some((first, second)) = cmd.two_args_of(|x| x.get_id() == arg.get_id()) {
- panic!(
- "Command {}: Argument names must be unique, but '{}' is in use by more than one argument or group{}",
- cmd.get_name(),
- arg.get_id(),
- duplicate_tip(cmd, first, second),
- );
- }
-
- // Long conflicts
- if let Some(l) = arg.get_long() {
- if let Some((first, second)) = cmd.two_args_of(|x| x.get_long() == Some(l)) {
- panic!(
- "Command {}: Long option names must be unique for each argument, \
- but '--{}' is in use by both '{}' and '{}'{}",
- cmd.get_name(),
- l,
- first.get_id(),
- second.get_id(),
- duplicate_tip(cmd, first, second)
- )
- }
- }
-
- // Short conflicts
- if let Some(s) = arg.get_short() {
- if let Some((first, second)) = cmd.two_args_of(|x| x.get_short() == Some(s)) {
- panic!(
- "Command {}: Short option names must be unique for each argument, \
- but '-{}' is in use by both '{}' and '{}'{}",
- cmd.get_name(),
- s,
- first.get_id(),
- second.get_id(),
- duplicate_tip(cmd, first, second),
- )
- }
- }
-
- // Index conflicts
- if let Some(idx) = arg.index {
- if let Some((first, second)) =
- cmd.two_args_of(|x| x.is_positional() && x.get_index() == Some(idx))
- {
- panic!(
- "Command {}: Argument '{}' has the same index as '{}' \
- and they are both positional arguments\n\n\t \
- Use `Arg::num_args(1..)` to allow one \
- positional argument to take multiple values",
- cmd.get_name(),
- first.get_id(),
- second.get_id()
- )
- }
- }
-
- // requires, r_if, r_unless
- for req in &arg.requires {
- assert!(
- cmd.id_exists(&req.1),
- "Command {}: Argument or group '{}' specified in 'requires*' for '{}' does not exist",
- cmd.get_name(),
- req.1,
- arg.get_id(),
- );
- }
-
- for req in &arg.r_ifs {
- assert!(
- !arg.is_required_set(),
- "Argument {}: `required` conflicts with `required_if_eq*`",
- arg.get_id()
- );
- assert!(
- cmd.id_exists(&req.0),
- "Command {}: Argument or group '{}' specified in 'required_if_eq*' for '{}' does not exist",
- cmd.get_name(),
- req.0,
- arg.get_id()
- );
- }
-
- for req in &arg.r_ifs_all {
- assert!(
- !arg.is_required_set(),
- "Argument {}: `required` conflicts with `required_if_eq_all`",
- arg.get_id()
- );
- assert!(
- cmd.id_exists(&req.0),
- "Command {}: Argument or group '{}' specified in 'required_if_eq_all' for '{}' does not exist",
- cmd.get_name(),
- req.0,
- arg.get_id()
- );
- }
-
- for req in &arg.r_unless {
- assert!(
- !arg.is_required_set(),
- "Argument {}: `required` conflicts with `required_unless*`",
- arg.get_id()
- );
- assert!(
- cmd.id_exists(req),
- "Command {}: Argument or group '{}' specified in 'required_unless*' for '{}' does not exist",
- cmd.get_name(),
- req,
- arg.get_id(),
- );
- }
-
- for req in &arg.r_unless_all {
- assert!(
- !arg.is_required_set(),
- "Argument {}: `required` conflicts with `required_unless*`",
- arg.get_id()
- );
- assert!(
- cmd.id_exists(req),
- "Command {}: Argument or group '{}' specified in 'required_unless*' for '{}' does not exist",
- cmd.get_name(),
- req,
- arg.get_id(),
- );
- }
-
- // blacklist
- for req in &arg.blacklist {
- assert!(
- cmd.id_exists(req),
- "Command {}: Argument or group '{}' specified in 'conflicts_with*' for '{}' does not exist",
- cmd.get_name(),
- req,
- arg.get_id(),
- );
- }
-
- // overrides
- for req in &arg.overrides {
- assert!(
- cmd.id_exists(req),
- "Command {}: Argument or group '{}' specified in 'overrides_with*' for '{}' does not exist",
- cmd.get_name(),
- req,
- arg.get_id(),
- );
- }
-
- if arg.is_last_set() {
- assert!(
- arg.get_long().is_none(),
- "Command {}: Flags or Options cannot have last(true) set. '{}' has both a long and last(true) set.",
- cmd.get_name(),
- arg.get_id()
- );
- assert!(
- arg.get_short().is_none(),
- "Command {}: Flags or Options cannot have last(true) set. '{}' has both a short and last(true) set.",
- cmd.get_name(),
- arg.get_id()
- );
- }
-
- assert!(
- !(arg.is_required_set() && arg.is_global_set()),
- "Command {}: Global arguments cannot be required.\n\n\t'{}' is marked as both global and required",
- cmd.get_name(),
- arg.get_id()
- );
-
- if arg.get_value_hint() == ValueHint::CommandWithArguments {
- assert!(
- arg.is_positional(),
- "Command {}: Argument '{}' has hint CommandWithArguments and must be positional.",
- cmd.get_name(),
- arg.get_id()
- );
-
- assert!(
- arg.is_trailing_var_arg_set() || arg.is_last_set(),
- "Command {}: Positional argument '{}' has hint CommandWithArguments, so Command must have `trailing_var_arg(true)` or `last(true)` set.",
- cmd.get_name(),
- arg.get_id()
- );
- }
- }
-
- for group in cmd.get_groups() {
- let derive_hint = if cfg!(feature = "derive") {
- " (note: `Args` implicitly creates `ArgGroup`s; disable with `#[group(skip)]`"
- } else {
- ""
- };
-
- // Name conflicts
- assert!(
- cmd.get_groups().filter(|x| x.id == group.id).count() < 2,
- "Command {}: Argument group name must be unique\n\n\t'{}' is already in use{}",
- cmd.get_name(),
- group.get_id(),
- derive_hint
- );
-
- // Groups should not have naming conflicts with Args
- assert!(
- !cmd.get_arguments().any(|x| x.get_id() == group.get_id()),
- "Command {}: Argument group name '{}' must not conflict with argument name{}",
- cmd.get_name(),
- group.get_id(),
- derive_hint
- );
-
- for arg in &group.args {
- // Args listed inside groups should exist
- assert!(
- cmd.get_arguments().any(|x| x.get_id() == arg),
- "Command {}: Argument group '{}' contains non-existent argument '{}'",
- cmd.get_name(),
- group.get_id(),
- arg
- );
- }
- }
-
- // Conflicts between flags and subcommands
-
- long_flags.sort_unstable();
- short_flags.sort_unstable();
-
- detect_duplicate_flags(&long_flags, "long");
- detect_duplicate_flags(&short_flags, "short");
-
- let mut subs = FlatSet::new();
- for sc in cmd.get_subcommands() {
- assert!(
- subs.insert(sc.get_name()),
- "Command {}: command name `{}` is duplicated",
- cmd.get_name(),
- sc.get_name()
- );
- for alias in sc.get_all_aliases() {
- assert!(
- subs.insert(alias),
- "Command {}: command `{}` alias `{}` is duplicated",
- cmd.get_name(),
- sc.get_name(),
- alias
- );
- }
- }
-
- _verify_positionals(cmd);
-
- #[cfg(feature = "help")]
- if let Some(help_template) = cmd.get_help_template() {
- assert!(
- !help_template.to_string().contains("{flags}"),
- "Command {}: {}",
- cmd.get_name(),
- "`{flags}` template variable was removed in clap3, they are now included in `{options}`",
- );
- assert!(
- !help_template.to_string().contains("{unified}"),
- "Command {}: {}",
- cmd.get_name(),
- "`{unified}` template variable was removed in clap3, use `{options}` instead"
- );
- #[cfg(feature = "unstable-v5")]
- assert!(
- !help_template.to_string().contains("{bin}"),
- "Command {}: {}",
- cmd.get_name(),
- "`{bin}` template variable was removed in clap5, use `{name}` instead"
- )
- }
-
- cmd._panic_on_missing_help(cmd.is_help_expected_set());
- assert_app_flags(cmd);
-}
-
-fn duplicate_tip(cmd: &Command, first: &Arg, second: &Arg) -> &'static str {
- if !cmd.is_disable_help_flag_set()
- && (first.get_id() == Id::HELP || second.get_id() == Id::HELP)
- {
- " (call `cmd.disable_help_flag(true)` to remove the auto-generated `--help`)"
- } else if !cmd.is_disable_version_flag_set()
- && (first.get_id() == Id::VERSION || second.get_id() == Id::VERSION)
- {
- " (call `cmd.disable_version_flag(true)` to remove the auto-generated `--version`)"
- } else {
- ""
- }
-}
-
-#[derive(Eq)]
-enum Flag<'a> {
- Command(String, &'a str),
- Arg(String, &'a str),
-}
-
-impl PartialEq for Flag<'_> {
- fn eq(&self, other: &Flag) -> bool {
- self.cmp(other) == Ordering::Equal
- }
-}
-
-impl PartialOrd for Flag<'_> {
- fn partial_cmp(&self, other: &Flag) -> Option<Ordering> {
- use Flag::*;
-
- match (self, other) {
- (Command(s1, _), Command(s2, _))
- | (Arg(s1, _), Arg(s2, _))
- | (Command(s1, _), Arg(s2, _))
- | (Arg(s1, _), Command(s2, _)) => {
- if s1 == s2 {
- Some(Ordering::Equal)
- } else {
- s1.partial_cmp(s2)
- }
- }
- }
- }
-}
-
-impl Ord for Flag<'_> {
- fn cmp(&self, other: &Self) -> Ordering {
- self.partial_cmp(other).unwrap()
- }
-}
-
-fn detect_duplicate_flags(flags: &[Flag], short_or_long: &str) {
- use Flag::*;
-
- for (one, two) in find_duplicates(flags) {
- match (one, two) {
- (Command(flag, one), Command(_, another)) if one != another => panic!(
- "the '{}' {} flag is specified for both '{}' and '{}' subcommands",
- flag, short_or_long, one, another
- ),
-
- (Arg(flag, one), Arg(_, another)) if one != another => panic!(
- "{} option names must be unique, but '{}' is in use by both '{}' and '{}'",
- short_or_long, flag, one, another
- ),
-
- (Arg(flag, arg), Command(_, sub)) | (Command(flag, sub), Arg(_, arg)) => panic!(
- "the '{}' {} flag for the '{}' argument conflicts with the short flag \
- for '{}' subcommand",
- flag, short_or_long, arg, sub
- ),
-
- _ => {}
- }
- }
-}
-
-/// Find duplicates in a sorted array.
-///
-/// The algorithm is simple: the array is sorted, duplicates
-/// must be placed next to each other, we can check only adjacent elements.
-fn find_duplicates<T: PartialEq>(slice: &[T]) -> impl Iterator<Item = (&T, &T)> {
- slice.windows(2).filter_map(|w| {
- if w[0] == w[1] {
- Some((&w[0], &w[1]))
- } else {
- None
- }
- })
-}
-
-fn assert_app_flags(cmd: &Command) {
- macro_rules! checker {
- ($a:ident requires $($b:ident)|+) => {
- if cmd.$a() {
- let mut s = String::new();
-
- $(
- if !cmd.$b() {
- use std::fmt::Write;
- write!(&mut s, " AppSettings::{} is required when AppSettings::{} is set.\n", std::stringify!($b), std::stringify!($a)).unwrap();
- }
- )+
-
- if !s.is_empty() {
- panic!("{}", s)
- }
- }
- };
- ($a:ident conflicts $($b:ident)|+) => {
- if cmd.$a() {
- let mut s = String::new();
-
- $(
- if cmd.$b() {
- use std::fmt::Write;
- write!(&mut s, " AppSettings::{} conflicts with AppSettings::{}.\n", std::stringify!($b), std::stringify!($a)).unwrap();
- }
- )+
-
- if !s.is_empty() {
- panic!("{}\n{}", cmd.get_name(), s)
- }
- }
- };
- }
-
- checker!(is_multicall_set conflicts is_no_binary_name_set);
-}
-
-#[cfg(debug_assertions)]
-fn _verify_positionals(cmd: &Command) -> bool {
- debug!("Command::_verify_positionals");
- // Because you must wait until all arguments have been supplied, this is the first chance
- // to make assertions on positional argument indexes
- //
- // First we verify that the index highest supplied index, is equal to the number of
- // positional arguments to verify there are no gaps (i.e. supplying an index of 1 and 3
- // but no 2)
-
- let highest_idx = cmd
- .get_keymap()
- .keys()
- .filter_map(|x| {
- if let KeyType::Position(n) = x {
- Some(*n)
- } else {
- None
- }
- })
- .max()
- .unwrap_or(0);
-
- let num_p = cmd.get_keymap().keys().filter(|x| x.is_position()).count();
-
- assert!(
- highest_idx == num_p,
- "Found positional argument whose index is {} but there \
- are only {} positional arguments defined",
- highest_idx,
- num_p
- );
-
- for arg in cmd.get_arguments() {
- if arg.index.unwrap_or(0) == highest_idx {
- assert!(
- !arg.is_trailing_var_arg_set() || !arg.is_last_set(),
- "{}:{}: `Arg::trailing_var_arg` and `Arg::last` cannot be used together",
- cmd.get_name(),
- arg.get_id()
- );
-
- if arg.is_trailing_var_arg_set() {
- assert!(
- arg.is_multiple(),
- "{}:{}: `Arg::trailing_var_arg` must accept multiple values",
- cmd.get_name(),
- arg.get_id()
- );
- }
- } else {
- assert!(
- !arg.is_trailing_var_arg_set(),
- "{}:{}: `Arg::trailing_var_arg` can only apply to last positional",
- cmd.get_name(),
- arg.get_id()
- );
- }
- }
-
- // Next we verify that only the highest index has takes multiple arguments (if any)
- let only_highest = |a: &Arg| a.is_multiple() && (a.get_index().unwrap_or(0) != highest_idx);
- if cmd.get_positionals().any(only_highest) {
- // First we make sure if there is a positional that allows multiple values
- // the one before it (second to last) has one of these:
- // * a value terminator
- // * ArgSettings::Last
- // * The last arg is Required
-
- // We can't pass the closure (it.next()) to the macro directly because each call to
- // find() (iterator, not macro) gets called repeatedly.
- let last = &cmd.get_keymap()[&KeyType::Position(highest_idx)];
- let second_to_last = &cmd.get_keymap()[&KeyType::Position(highest_idx - 1)];
-
- // Either the final positional is required
- // Or the second to last has a terminator or .last(true) set
- let ok = last.is_required_set()
- || (second_to_last.terminator.is_some() || second_to_last.is_last_set())
- || last.is_last_set();
- assert!(
- ok,
- "When using a positional argument with `.num_args(1..)` that is *not the \
- last* positional argument, the last positional argument (i.e. the one \
- with the highest index) *must* have .required(true) or .last(true) set."
- );
-
- // We make sure if the second to last is Multiple the last is ArgSettings::Last
- let ok = second_to_last.is_multiple() || last.is_last_set();
- assert!(
- ok,
- "Only the last positional argument, or second to last positional \
- argument may be set to `.num_args(1..)`"
- );
-
- // Next we check how many have both Multiple and not a specific number of values set
- let count = cmd
- .get_positionals()
- .filter(|p| {
- p.is_multiple_values_set()
- && !p.get_num_args().expect(INTERNAL_ERROR_MSG).is_fixed()
- })
- .count();
- let ok = count <= 1
- || (last.is_last_set()
- && last.is_multiple()
- && second_to_last.is_multiple()
- && count == 2);
- assert!(
- ok,
- "Only one positional argument with `.num_args(1..)` set is allowed per \
- command, unless the second one also has .last(true) set"
- );
- }
-
- let mut found = false;
-
- if cmd.is_allow_missing_positional_set() {
- // Check that if a required positional argument is found, all positions with a lower
- // index are also required.
- let mut foundx2 = false;
-
- for p in cmd.get_positionals() {
- if foundx2 && !p.is_required_set() {
- assert!(
- p.is_required_set(),
- "Found non-required positional argument with a lower \
- index than a required positional argument by two or more: {:?} \
- index {:?}",
- p.get_id(),
- p.get_index()
- );
- } else if p.is_required_set() && !p.is_last_set() {
- // Args that .last(true) don't count since they can be required and have
- // positionals with a lower index that aren't required
- // Imagine: prog <req1> [opt1] -- <req2>
- // Both of these are valid invocations:
- // $ prog r1 -- r2
- // $ prog r1 o1 -- r2
- if found {
- foundx2 = true;
- continue;
- }
- found = true;
- continue;
- } else {
- found = false;
- }
- }
- } else {
- // Check that if a required positional argument is found, all positions with a lower
- // index are also required
- for p in (1..=num_p).rev().filter_map(|n| cmd.get_keymap().get(&n)) {
- if found {
- assert!(
- p.is_required_set(),
- "Found non-required positional argument with a lower \
- index than a required positional argument: {:?} index {:?}",
- p.get_id(),
- p.get_index()
- );
- } else if p.is_required_set() && !p.is_last_set() {
- // Args that .last(true) don't count since they can be required and have
- // positionals with a lower index that aren't required
- // Imagine: prog <req1> [opt1] -- <req2>
- // Both of these are valid invocations:
- // $ prog r1 -- r2
- // $ prog r1 o1 -- r2
- found = true;
- continue;
- }
- }
- }
- assert!(
- cmd.get_positionals().filter(|p| p.is_last_set()).count() < 2,
- "Only one positional argument may have last(true) set. Found two."
- );
- if cmd
- .get_positionals()
- .any(|p| p.is_last_set() && p.is_required_set())
- && cmd.has_subcommands()
- && !cmd.is_subcommand_negates_reqs_set()
- {
- panic!(
- "Having a required positional argument with .last(true) set *and* child \
- subcommands without setting SubcommandsNegateReqs isn't compatible."
- );
- }
-
- true
-}
-
-fn assert_arg(arg: &Arg) {
- debug!("Arg::_debug_asserts:{}", arg.get_id());
-
- // Self conflict
- // TODO: this check should be recursive
- assert!(
- !arg.blacklist.iter().any(|x| x == arg.get_id()),
- "Argument '{}' cannot conflict with itself",
- arg.get_id(),
- );
-
- assert_eq!(
- arg.get_action().takes_values(),
- arg.is_takes_value_set(),
- "Argument `{}`'s selected action {:?} contradicts `takes_value`",
- arg.get_id(),
- arg.get_action()
- );
- if let Some(action_type_id) = arg.get_action().value_type_id() {
- assert_eq!(
- action_type_id,
- arg.get_value_parser().type_id(),
- "Argument `{}`'s selected action {:?} contradicts `value_parser` ({:?})",
- arg.get_id(),
- arg.get_action(),
- arg.get_value_parser()
- );
- }
-
- if arg.get_value_hint() != ValueHint::Unknown {
- assert!(
- arg.is_takes_value_set(),
- "Argument '{}' has value hint but takes no value",
- arg.get_id()
- );
-
- if arg.get_value_hint() == ValueHint::CommandWithArguments {
- assert!(
- arg.is_multiple_values_set(),
- "Argument '{}' uses hint CommandWithArguments and must accept multiple values",
- arg.get_id()
- )
- }
- }
-
- if arg.index.is_some() {
- assert!(
- arg.is_positional(),
- "Argument '{}' is a positional argument and can't have short or long name versions",
- arg.get_id()
- );
- assert!(
- arg.is_takes_value_set(),
- "Argument '{}` is positional, it must take a value{}",
- arg.get_id(),
- if arg.get_id() == Id::HELP {
- " (`mut_arg` no longer works with implicit `--help`)"
- } else if arg.get_id() == Id::VERSION {
- " (`mut_arg` no longer works with implicit `--version`)"
- } else {
- ""
- }
- );
- }
-
- let num_vals = arg.get_num_args().expect(INTERNAL_ERROR_MSG);
- // This can be the cause of later asserts, so put this first
- if num_vals != ValueRange::EMPTY {
- // HACK: Don't check for flags to make the derive easier
- let num_val_names = arg.get_value_names().unwrap_or(&[]).len();
- if num_vals.max_values() < num_val_names {
- panic!(
- "Argument {}: Too many value names ({}) compared to `num_args` ({})",
- arg.get_id(),
- num_val_names,
- num_vals
- );
- }
- }
-
- assert_eq!(
- num_vals.takes_values(),
- arg.is_takes_value_set(),
- "Argument {}: mismatch between `num_args` ({}) and `takes_value`",
- arg.get_id(),
- num_vals,
- );
- assert_eq!(
- num_vals.is_multiple(),
- arg.is_multiple_values_set(),
- "Argument {}: mismatch between `num_args` ({}) and `multiple_values`",
- arg.get_id(),
- num_vals,
- );
-
- if 1 < num_vals.min_values() {
- assert!(
- !arg.is_require_equals_set(),
- "Argument {}: cannot accept more than 1 arg (num_args={}) with require_equals",
- arg.get_id(),
- num_vals
- );
- }
-
- if num_vals == ValueRange::SINGLE {
- assert!(
- !arg.is_multiple_values_set(),
- "Argument {}: mismatch between `num_args` and `multiple_values`",
- arg.get_id()
- );
- }
-
- assert_arg_flags(arg);
-
- assert_defaults(arg, "default_value", arg.default_vals.iter());
- assert_defaults(
- arg,
- "default_missing_value",
- arg.default_missing_vals.iter(),
- );
- assert_defaults(
- arg,
- "default_value_if",
- arg.default_vals_ifs
- .iter()
- .filter_map(|(_, _, default)| default.as_ref()),
- );
-}
-
-fn assert_arg_flags(arg: &Arg) {
- macro_rules! checker {
- ($a:ident requires $($b:ident)|+) => {
- if arg.$a() {
- let mut s = String::new();
-
- $(
- if !arg.$b() {
- use std::fmt::Write;
- write!(&mut s, " Arg::{} is required when Arg::{} is set.\n", std::stringify!($b), std::stringify!($a)).unwrap();
- }
- )+
-
- if !s.is_empty() {
- panic!("Argument {:?}\n{}", arg.get_id(), s)
- }
- }
- }
- }
-
- checker!(is_hide_possible_values_set requires is_takes_value_set);
- checker!(is_allow_hyphen_values_set requires is_takes_value_set);
- checker!(is_allow_negative_numbers_set requires is_takes_value_set);
- checker!(is_require_equals_set requires is_takes_value_set);
- checker!(is_last_set requires is_takes_value_set);
- checker!(is_hide_default_value_set requires is_takes_value_set);
- checker!(is_multiple_values_set requires is_takes_value_set);
- checker!(is_ignore_case_set requires is_takes_value_set);
-}
-
-fn assert_defaults<'d>(
- arg: &Arg,
- field: &'static str,
- defaults: impl IntoIterator<Item = &'d OsStr>,
-) {
- for default_os in defaults {
- let value_parser = arg.get_value_parser();
- let assert_cmd = Command::new("assert");
- if let Some(delim) = arg.get_value_delimiter() {
- let default_os = RawOsStr::new(default_os);
- for part in default_os.split(delim) {
- if let Err(err) = value_parser.parse_ref(&assert_cmd, Some(arg), &part.to_os_str())
- {
- panic!(
- "Argument `{}`'s {}={:?} failed validation: {}",
- arg.get_id(),
- field,
- part.to_str_lossy(),
- err
- );
- }
- }
- } else if let Err(err) = value_parser.parse_ref(&assert_cmd, Some(arg), default_os) {
- panic!(
- "Argument `{}`'s {}={:?} failed validation: {}",
- arg.get_id(),
- field,
- default_os,
- err
- );
- }
- }
-}
diff --git a/vendor/clap/src/builder/mod.rs b/vendor/clap/src/builder/mod.rs
deleted file mode 100644
index 098ad576e..000000000
--- a/vendor/clap/src/builder/mod.rs
+++ /dev/null
@@ -1,60 +0,0 @@
-//! Define [`Command`] line [arguments][`Arg`]
-
-mod action;
-mod app_settings;
-mod arg;
-mod arg_group;
-mod arg_predicate;
-mod arg_settings;
-mod command;
-mod os_str;
-mod possible_value;
-mod range;
-mod resettable;
-mod str;
-mod styled_str;
-mod value_hint;
-mod value_parser;
-
-#[cfg(debug_assertions)]
-mod debug_asserts;
-
-#[cfg(test)]
-mod tests;
-
-pub use self::str::Str;
-pub use action::ArgAction;
-pub use arg::Arg;
-pub use arg_group::ArgGroup;
-pub use arg_predicate::ArgPredicate;
-pub use command::Command;
-pub use os_str::OsStr;
-pub use possible_value::PossibleValue;
-pub use range::ValueRange;
-pub use resettable::IntoResettable;
-pub use resettable::Resettable;
-pub use styled_str::StyledStr;
-pub use value_hint::ValueHint;
-pub use value_parser::_AutoValueParser;
-pub use value_parser::via_prelude;
-pub use value_parser::BoolValueParser;
-pub use value_parser::BoolishValueParser;
-pub use value_parser::EnumValueParser;
-pub use value_parser::FalseyValueParser;
-pub use value_parser::MapValueParser;
-pub use value_parser::NonEmptyStringValueParser;
-pub use value_parser::OsStringValueParser;
-pub use value_parser::PathBufValueParser;
-pub use value_parser::PossibleValuesParser;
-pub use value_parser::RangedI64ValueParser;
-pub use value_parser::RangedU64ValueParser;
-pub use value_parser::StringValueParser;
-pub use value_parser::TypedValueParser;
-pub use value_parser::ValueParser;
-pub use value_parser::ValueParserFactory;
-pub use value_parser::_AnonymousValueParser;
-
-#[allow(unused_imports)]
-pub(crate) use self::str::Inner as StrInner;
-pub(crate) use action::CountType;
-pub(crate) use arg_settings::{ArgFlags, ArgSettings};
diff --git a/vendor/clap/src/builder/os_str.rs b/vendor/clap/src/builder/os_str.rs
deleted file mode 100644
index bb2370deb..000000000
--- a/vendor/clap/src/builder/os_str.rs
+++ /dev/null
@@ -1,336 +0,0 @@
-use crate::builder::Str;
-
-/// A UTF-8-encoded fixed string
-///
-/// **NOTE:** To support dynamic values (i.e. `OsString`), enable the [`string`
-/// feature][crate::_features]
-#[derive(Default, Clone, Eq, PartialEq, PartialOrd, Ord, Hash)]
-pub struct OsStr {
- name: Inner,
-}
-
-impl OsStr {
- #[cfg(feature = "string")]
- pub(crate) fn from_string(name: std::ffi::OsString) -> Self {
- Self {
- name: Inner::from_string(name),
- }
- }
-
- #[cfg(feature = "string")]
- pub(crate) fn from_ref(name: &std::ffi::OsStr) -> Self {
- Self {
- name: Inner::from_ref(name),
- }
- }
-
- pub(crate) fn from_static_ref(name: &'static std::ffi::OsStr) -> Self {
- Self {
- name: Inner::from_static_ref(name),
- }
- }
-
- /// Get the raw string as an `std::ffi::OsStr`
- pub fn as_os_str(&self) -> &std::ffi::OsStr {
- self.name.as_os_str()
- }
-
- /// Get the raw string as an `OsString`
- pub fn to_os_string(&self) -> std::ffi::OsString {
- self.as_os_str().to_owned()
- }
-}
-
-impl From<&'_ OsStr> for OsStr {
- fn from(id: &'_ OsStr) -> Self {
- id.clone()
- }
-}
-
-#[cfg(feature = "string")]
-impl From<Str> for OsStr {
- fn from(id: Str) -> Self {
- match id.into_inner() {
- crate::builder::StrInner::Static(s) => Self::from_static_ref(std::ffi::OsStr::new(s)),
- crate::builder::StrInner::Owned(s) => Self::from_ref(std::ffi::OsStr::new(s.as_ref())),
- }
- }
-}
-
-#[cfg(not(feature = "string"))]
-impl From<Str> for OsStr {
- fn from(id: Str) -> Self {
- Self::from_static_ref(std::ffi::OsStr::new(id.into_inner().0))
- }
-}
-
-#[cfg(feature = "perf")]
-impl From<&'_ Str> for OsStr {
- fn from(id: &'_ Str) -> Self {
- match id.clone().into_inner() {
- crate::builder::StrInner::Static(s) => Self::from_static_ref(std::ffi::OsStr::new(s)),
- crate::builder::StrInner::Owned(s) => Self::from_ref(std::ffi::OsStr::new(s.as_ref())),
- }
- }
-}
-
-impl From<&'_ Str> for OsStr {
- fn from(id: &'_ Str) -> Self {
- id.clone().into()
- }
-}
-
-#[cfg(feature = "string")]
-impl From<std::ffi::OsString> for OsStr {
- fn from(name: std::ffi::OsString) -> Self {
- Self::from_string(name)
- }
-}
-
-#[cfg(feature = "string")]
-impl From<&'_ std::ffi::OsString> for OsStr {
- fn from(name: &'_ std::ffi::OsString) -> Self {
- Self::from_ref(name.as_os_str())
- }
-}
-
-#[cfg(feature = "string")]
-impl From<std::string::String> for OsStr {
- fn from(name: std::string::String) -> Self {
- Self::from_string(name.into())
- }
-}
-
-#[cfg(feature = "string")]
-impl From<&'_ std::string::String> for OsStr {
- fn from(name: &'_ std::string::String) -> Self {
- Self::from_ref(name.as_str().as_ref())
- }
-}
-
-impl From<&'static std::ffi::OsStr> for OsStr {
- fn from(name: &'static std::ffi::OsStr) -> Self {
- Self::from_static_ref(name)
- }
-}
-
-impl From<&'_ &'static std::ffi::OsStr> for OsStr {
- fn from(name: &'_ &'static std::ffi::OsStr) -> Self {
- Self::from_static_ref(name)
- }
-}
-
-impl From<&'static str> for OsStr {
- fn from(name: &'static str) -> Self {
- Self::from_static_ref(name.as_ref())
- }
-}
-
-impl From<&'_ &'static str> for OsStr {
- fn from(name: &'_ &'static str) -> Self {
- Self::from_static_ref((*name).as_ref())
- }
-}
-
-impl From<OsStr> for std::ffi::OsString {
- fn from(name: OsStr) -> Self {
- name.name.into_os_string()
- }
-}
-
-impl From<OsStr> for std::path::PathBuf {
- fn from(name: OsStr) -> Self {
- std::ffi::OsString::from(name).into()
- }
-}
-
-impl std::fmt::Debug for OsStr {
- #[inline]
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- std::fmt::Debug::fmt(self.as_os_str(), f)
- }
-}
-
-impl std::ops::Deref for OsStr {
- type Target = std::ffi::OsStr;
-
- #[inline]
- fn deref(&self) -> &std::ffi::OsStr {
- self.as_os_str()
- }
-}
-
-impl AsRef<std::ffi::OsStr> for OsStr {
- #[inline]
- fn as_ref(&self) -> &std::ffi::OsStr {
- self.as_os_str()
- }
-}
-
-impl AsRef<std::path::Path> for OsStr {
- #[inline]
- fn as_ref(&self) -> &std::path::Path {
- std::path::Path::new(self)
- }
-}
-
-impl std::borrow::Borrow<std::ffi::OsStr> for OsStr {
- #[inline]
- fn borrow(&self) -> &std::ffi::OsStr {
- self.as_os_str()
- }
-}
-
-impl PartialEq<str> for OsStr {
- #[inline]
- fn eq(&self, other: &str) -> bool {
- PartialEq::eq(self.as_os_str(), other)
- }
-}
-impl PartialEq<OsStr> for str {
- #[inline]
- fn eq(&self, other: &OsStr) -> bool {
- PartialEq::eq(self, other.as_os_str())
- }
-}
-
-impl PartialEq<&'_ str> for OsStr {
- #[inline]
- fn eq(&self, other: &&str) -> bool {
- PartialEq::eq(self.as_os_str(), *other)
- }
-}
-impl PartialEq<OsStr> for &'_ str {
- #[inline]
- fn eq(&self, other: &OsStr) -> bool {
- PartialEq::eq(*self, other.as_os_str())
- }
-}
-
-impl PartialEq<&'_ std::ffi::OsStr> for OsStr {
- #[inline]
- fn eq(&self, other: &&std::ffi::OsStr) -> bool {
- PartialEq::eq(self.as_os_str(), *other)
- }
-}
-impl PartialEq<OsStr> for &'_ std::ffi::OsStr {
- #[inline]
- fn eq(&self, other: &OsStr) -> bool {
- PartialEq::eq(*self, other.as_os_str())
- }
-}
-
-impl PartialEq<std::string::String> for OsStr {
- #[inline]
- fn eq(&self, other: &std::string::String) -> bool {
- PartialEq::eq(self.as_os_str(), other.as_str())
- }
-}
-impl PartialEq<OsStr> for std::string::String {
- #[inline]
- fn eq(&self, other: &OsStr) -> bool {
- PartialEq::eq(self.as_str(), other.as_os_str())
- }
-}
-
-impl PartialEq<std::ffi::OsString> for OsStr {
- #[inline]
- fn eq(&self, other: &std::ffi::OsString) -> bool {
- PartialEq::eq(self.as_os_str(), other.as_os_str())
- }
-}
-impl PartialEq<OsStr> for std::ffi::OsString {
- #[inline]
- fn eq(&self, other: &OsStr) -> bool {
- PartialEq::eq(self.as_os_str(), other.as_os_str())
- }
-}
-
-#[cfg(feature = "string")]
-pub(crate) mod inner {
- #[derive(Clone)]
- pub(crate) enum Inner {
- Static(&'static std::ffi::OsStr),
- Owned(Box<std::ffi::OsStr>),
- }
-
- impl Inner {
- pub(crate) fn from_string(name: std::ffi::OsString) -> Self {
- Self::Owned(name.into_boxed_os_str())
- }
-
- pub(crate) fn from_ref(name: &std::ffi::OsStr) -> Self {
- Self::Owned(Box::from(name))
- }
-
- pub(crate) fn from_static_ref(name: &'static std::ffi::OsStr) -> Self {
- Self::Static(name)
- }
-
- pub(crate) fn as_os_str(&self) -> &std::ffi::OsStr {
- match self {
- Self::Static(s) => s,
- Self::Owned(s) => s.as_ref(),
- }
- }
-
- pub(crate) fn into_os_string(self) -> std::ffi::OsString {
- self.as_os_str().to_owned()
- }
- }
-}
-
-#[cfg(not(feature = "string"))]
-pub(crate) mod inner {
- #[derive(Clone)]
- pub(crate) struct Inner(&'static std::ffi::OsStr);
-
- impl Inner {
- pub(crate) fn from_static_ref(name: &'static std::ffi::OsStr) -> Self {
- Self(name)
- }
-
- pub(crate) fn as_os_str(&self) -> &std::ffi::OsStr {
- self.0
- }
-
- pub(crate) fn into_os_string(self) -> std::ffi::OsString {
- self.as_os_str().to_owned()
- }
- }
-}
-
-pub(crate) use inner::Inner;
-
-impl Default for Inner {
- fn default() -> Self {
- Self::from_static_ref(std::ffi::OsStr::new(""))
- }
-}
-
-impl PartialEq for Inner {
- fn eq(&self, other: &Inner) -> bool {
- self.as_os_str() == other.as_os_str()
- }
-}
-
-impl PartialOrd for Inner {
- fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
- self.as_os_str().partial_cmp(other.as_os_str())
- }
-}
-
-impl Ord for Inner {
- fn cmp(&self, other: &Inner) -> std::cmp::Ordering {
- self.as_os_str().cmp(other.as_os_str())
- }
-}
-
-impl Eq for Inner {}
-
-impl std::hash::Hash for Inner {
- #[inline]
- fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
- self.as_os_str().hash(state);
- }
-}
diff --git a/vendor/clap/src/builder/possible_value.rs b/vendor/clap/src/builder/possible_value.rs
deleted file mode 100644
index 7a313ad25..000000000
--- a/vendor/clap/src/builder/possible_value.rs
+++ /dev/null
@@ -1,234 +0,0 @@
-use crate::builder::IntoResettable;
-use crate::builder::Str;
-use crate::builder::StyledStr;
-use crate::util::eq_ignore_case;
-
-/// A possible value of an argument.
-///
-/// This is used for specifying [possible values] of [Args].
-///
-/// See also [`PossibleValuesParser`][crate::builder::PossibleValuesParser]
-///
-/// **NOTE:** Most likely you can use strings, rather than `PossibleValue` as it is only required
-/// to [hide] single values from help messages and shell completions or to attach [help] to
-/// possible values.
-///
-/// # Examples
-///
-/// ```rust
-/// # use clap::{Arg, builder::PossibleValue, ArgAction};
-/// let cfg = Arg::new("config")
-/// .action(ArgAction::Set)
-/// .value_name("FILE")
-/// .value_parser([
-/// PossibleValue::new("fast"),
-/// PossibleValue::new("slow").help("slower than fast"),
-/// PossibleValue::new("secret speed").hide(true)
-/// ]);
-/// ```
-///
-/// [Args]: crate::Arg
-/// [possible values]: crate::builder::ValueParser::possible_values
-/// [hide]: PossibleValue::hide()
-/// [help]: PossibleValue::help()
-#[derive(Debug, Default, Clone, PartialEq, Eq)]
-pub struct PossibleValue {
- name: Str,
- help: Option<StyledStr>,
- aliases: Vec<Str>, // (name, visible)
- hide: bool,
-}
-
-impl PossibleValue {
- /// Create a [`PossibleValue`] with its name.
- ///
- /// The name will be used to decide whether this value was provided by the user to an argument.
- ///
- /// **NOTE:** In case it is not [hidden] it will also be shown in help messages for arguments
- /// that use it as a [possible value] and have not hidden them through [`Arg::hide_possible_values(true)`].
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// PossibleValue::new("fast")
- /// # ;
- /// ```
- /// [hidden]: PossibleValue::hide
- /// [possible value]: crate::builder::PossibleValuesParser
- /// [`Arg::hide_possible_values(true)`]: crate::Arg::hide_possible_values()
- pub fn new(name: impl Into<Str>) -> Self {
- PossibleValue {
- name: name.into(),
- ..Default::default()
- }
- }
-
- /// Sets the help description of the value.
- ///
- /// This is typically displayed in completions (where supported) and should be a short, one-line
- /// description.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// PossibleValue::new("slow")
- /// .help("not fast")
- /// # ;
- /// ```
- #[inline]
- #[must_use]
- pub fn help(mut self, help: impl IntoResettable<StyledStr>) -> Self {
- self.help = help.into_resettable().into_option();
- self
- }
-
- /// Hides this value from help and shell completions.
- ///
- /// This is an alternative to hiding through [`Arg::hide_possible_values(true)`], if you only
- /// want to hide some values.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// PossibleValue::new("secret")
- /// .hide(true)
- /// # ;
- /// ```
- /// [`Arg::hide_possible_values(true)`]: crate::Arg::hide_possible_values()
- #[inline]
- #[must_use]
- pub fn hide(mut self, yes: bool) -> Self {
- self.hide = yes;
- self
- }
-
- /// Sets a *hidden* alias for this argument value.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// PossibleValue::new("slow")
- /// .alias("not-fast")
- /// # ;
- /// ```
- #[must_use]
- pub fn alias(mut self, name: impl IntoResettable<Str>) -> Self {
- if let Some(name) = name.into_resettable().into_option() {
- self.aliases.push(name);
- } else {
- self.aliases.clear();
- }
- self
- }
-
- /// Sets multiple *hidden* aliases for this argument value.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// PossibleValue::new("slow")
- /// .aliases(["not-fast", "snake-like"])
- /// # ;
- /// ```
- #[must_use]
- pub fn aliases(mut self, names: impl IntoIterator<Item = impl Into<Str>>) -> Self {
- self.aliases.extend(names.into_iter().map(|a| a.into()));
- self
- }
-}
-
-/// Reflection
-impl PossibleValue {
- /// Get the name of the argument value
- #[inline]
- pub fn get_name(&self) -> &str {
- self.name.as_str()
- }
-
- /// Get the help specified for this argument, if any
- #[inline]
- pub fn get_help(&self) -> Option<&StyledStr> {
- self.help.as_ref()
- }
-
- /// Get the help specified for this argument, if any and the argument
- /// value is not hidden
- #[inline]
- #[cfg(feature = "help")]
- pub(crate) fn get_visible_help(&self) -> Option<&StyledStr> {
- if !self.hide {
- self.get_help()
- } else {
- None
- }
- }
-
- /// Report if [`PossibleValue::hide`] is set
- #[inline]
- pub fn is_hide_set(&self) -> bool {
- self.hide
- }
-
- /// Report if PossibleValue is not hidden and has a help message
- pub(crate) fn should_show_help(&self) -> bool {
- !self.hide && self.help.is_some()
- }
-
- /// Get the name if argument value is not hidden, `None` otherwise,
- /// but wrapped in quotes if it contains whitespace
- #[cfg(feature = "help")]
- pub(crate) fn get_visible_quoted_name(&self) -> Option<std::borrow::Cow<'_, str>> {
- if !self.hide {
- Some(if self.name.contains(char::is_whitespace) {
- format!("{:?}", self.name).into()
- } else {
- self.name.as_str().into()
- })
- } else {
- None
- }
- }
-
- /// Returns all valid values of the argument value.
- ///
- /// Namely the name and all aliases.
- pub fn get_name_and_aliases(&self) -> impl Iterator<Item = &str> + '_ {
- std::iter::once(self.get_name()).chain(self.aliases.iter().map(|s| s.as_str()))
- }
-
- /// Tests if the value is valid for this argument value
- ///
- /// The value is valid if it is either the name or one of the aliases.
- ///
- /// # Examples
- ///
- /// ```rust
- /// # use clap::builder::PossibleValue;
- /// let arg_value = PossibleValue::new("fast").alias("not-slow");
- ///
- /// assert!(arg_value.matches("fast", false));
- /// assert!(arg_value.matches("not-slow", false));
- ///
- /// assert!(arg_value.matches("FAST", true));
- /// assert!(!arg_value.matches("FAST", false));
- /// ```
- pub fn matches(&self, value: &str, ignore_case: bool) -> bool {
- if ignore_case {
- self.get_name_and_aliases()
- .any(|name| eq_ignore_case(name, value))
- } else {
- self.get_name_and_aliases().any(|name| name == value)
- }
- }
-}
-
-impl<S: Into<Str>> From<S> for PossibleValue {
- fn from(s: S) -> Self {
- Self::new(s)
- }
-}
diff --git a/vendor/clap/src/builder/range.rs b/vendor/clap/src/builder/range.rs
deleted file mode 100644
index 3f077bd86..000000000
--- a/vendor/clap/src/builder/range.rs
+++ /dev/null
@@ -1,283 +0,0 @@
-/// Values per occurrence for an argument
-#[derive(Copy, Clone, PartialEq, Eq, Hash)]
-pub struct ValueRange {
- start_inclusive: usize,
- end_inclusive: usize,
-}
-
-impl ValueRange {
- /// Nor argument values, or a flag
- pub const EMPTY: Self = Self {
- start_inclusive: 0,
- end_inclusive: 0,
- };
-
- /// A single argument value, the most common case for options
- pub const SINGLE: Self = Self {
- start_inclusive: 1,
- end_inclusive: 1,
- };
-
- /// Create a range
- ///
- /// # Panics
- ///
- /// If the end is less than the start
- ///
- /// # Examples
- ///
- /// ```
- /// # use clap::builder::ValueRange;
- /// let range = ValueRange::new(5);
- /// let range = ValueRange::new(5..10);
- /// let range = ValueRange::new(5..=10);
- /// let range = ValueRange::new(5..);
- /// let range = ValueRange::new(..10);
- /// let range = ValueRange::new(..=10);
- /// ```
- ///
- /// While this will panic:
- /// ```should_panic
- /// # use clap::builder::ValueRange;
- /// let range = ValueRange::new(10..5); // Panics!
- /// ```
- pub fn new(range: impl Into<Self>) -> Self {
- range.into()
- }
-
- pub(crate) fn raw(start_inclusive: usize, end_inclusive: usize) -> Self {
- debug_assert!(start_inclusive <= end_inclusive);
- Self {
- start_inclusive,
- end_inclusive,
- }
- }
-
- /// Fewest number of values the argument accepts
- pub fn min_values(&self) -> usize {
- self.start_inclusive
- }
-
- /// Most number of values the argument accepts
- pub fn max_values(&self) -> usize {
- self.end_inclusive
- }
-
- /// Report whether the argument takes any values (ie is a flag)
- ///
- /// # Examples
- ///
- /// ```
- /// # use clap::builder::ValueRange;
- /// let range = ValueRange::new(5);
- /// assert!(range.takes_values());
- ///
- /// let range = ValueRange::new(0);
- /// assert!(!range.takes_values());
- /// ```
- pub fn takes_values(&self) -> bool {
- self.end_inclusive != 0
- }
-
- pub(crate) fn is_unbounded(&self) -> bool {
- self.end_inclusive == usize::MAX
- }
-
- pub(crate) fn is_fixed(&self) -> bool {
- self.start_inclusive == self.end_inclusive
- }
-
- pub(crate) fn is_multiple(&self) -> bool {
- self.start_inclusive != self.end_inclusive || 1 < self.start_inclusive
- }
-
- pub(crate) fn num_values(&self) -> Option<usize> {
- self.is_fixed().then_some(self.start_inclusive)
- }
-
- pub(crate) fn accepts_more(&self, current: usize) -> bool {
- current < self.end_inclusive
- }
-}
-
-impl std::ops::RangeBounds<usize> for ValueRange {
- fn start_bound(&self) -> std::ops::Bound<&usize> {
- std::ops::Bound::Included(&self.start_inclusive)
- }
-
- fn end_bound(&self) -> std::ops::Bound<&usize> {
- std::ops::Bound::Included(&self.end_inclusive)
- }
-}
-
-impl Default for ValueRange {
- fn default() -> Self {
- Self::SINGLE
- }
-}
-
-impl From<usize> for ValueRange {
- fn from(fixed: usize) -> Self {
- (fixed..=fixed).into()
- }
-}
-
-impl From<std::ops::Range<usize>> for ValueRange {
- fn from(range: std::ops::Range<usize>) -> Self {
- let start_inclusive = range.start;
- let end_inclusive = range.end.saturating_sub(1);
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl From<std::ops::RangeFull> for ValueRange {
- fn from(_: std::ops::RangeFull) -> Self {
- let start_inclusive = 0;
- let end_inclusive = usize::MAX;
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl From<std::ops::RangeFrom<usize>> for ValueRange {
- fn from(range: std::ops::RangeFrom<usize>) -> Self {
- let start_inclusive = range.start;
- let end_inclusive = usize::MAX;
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl From<std::ops::RangeTo<usize>> for ValueRange {
- fn from(range: std::ops::RangeTo<usize>) -> Self {
- let start_inclusive = 0;
- let end_inclusive = range.end.saturating_sub(1);
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl From<std::ops::RangeInclusive<usize>> for ValueRange {
- fn from(range: std::ops::RangeInclusive<usize>) -> Self {
- let start_inclusive = *range.start();
- let end_inclusive = *range.end();
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl From<std::ops::RangeToInclusive<usize>> for ValueRange {
- fn from(range: std::ops::RangeToInclusive<usize>) -> Self {
- let start_inclusive = 0;
- let end_inclusive = range.end;
- Self::raw(start_inclusive, end_inclusive)
- }
-}
-
-impl std::fmt::Display for ValueRange {
- fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
- ok!(self.start_inclusive.fmt(f));
- if !self.is_fixed() {
- ok!("..=".fmt(f));
- ok!(self.end_inclusive.fmt(f));
- }
- Ok(())
- }
-}
-
-impl std::fmt::Debug for ValueRange {
- fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
- write!(f, "{}", self)
- }
-}
-
-#[cfg(test)]
-mod test {
- use super::*;
-
- use std::ops::RangeBounds;
-
- #[test]
- fn from_fixed() {
- let range: ValueRange = 5.into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&5));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&5));
- assert!(range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), Some(5));
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_fixed_empty() {
- let range: ValueRange = 0.into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&0));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&0));
- assert!(range.is_fixed());
- assert!(!range.is_multiple());
- assert_eq!(range.num_values(), Some(0));
- assert!(!range.takes_values());
- }
-
- #[test]
- fn from_range() {
- let range: ValueRange = (5..10).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&5));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&9));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_range_inclusive() {
- let range: ValueRange = (5..=10).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&5));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&10));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_range_full() {
- let range: ValueRange = (..).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&0));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&usize::MAX));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_range_from() {
- let range: ValueRange = (5..).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&5));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&usize::MAX));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_range_to() {
- let range: ValueRange = (..10).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&0));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&9));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-
- #[test]
- fn from_range_to_inclusive() {
- let range: ValueRange = (..=10).into();
- assert_eq!(range.start_bound(), std::ops::Bound::Included(&0));
- assert_eq!(range.end_bound(), std::ops::Bound::Included(&10));
- assert!(!range.is_fixed());
- assert!(range.is_multiple());
- assert_eq!(range.num_values(), None);
- assert!(range.takes_values());
- }
-}
diff --git a/vendor/clap/src/builder/resettable.rs b/vendor/clap/src/builder/resettable.rs
deleted file mode 100644
index e0b82b11b..000000000
--- a/vendor/clap/src/builder/resettable.rs
+++ /dev/null
@@ -1,211 +0,0 @@
-// Unlike `impl Into<Option<T>>` or `Option<impl Into<T>>`, this isn't ambiguous for the `None`
-// case.
-
-use crate::builder::ArgAction;
-use crate::builder::OsStr;
-use crate::builder::Str;
-use crate::builder::StyledStr;
-use crate::builder::ValueHint;
-use crate::builder::ValueParser;
-use crate::builder::ValueRange;
-
-/// Clearable builder value
-///
-/// This allows a builder function to both accept any value that can [`Into::into`] `T` (like
-/// `&str` into `OsStr`) as well as `None` to reset it to the default. This is needed to
-/// workaround a limitation where you can't have a function argument that is `impl Into<Option<T>>`
-/// where `T` is `impl Into<S>` accept `None` as its type is ambiguous.
-///
-/// # Example
-///
-/// ```rust
-/// # use clap::Command;
-/// # use clap::Arg;
-/// fn common() -> Command {
-/// Command::new("cli")
-/// .arg(Arg::new("input").short('i').long("input"))
-/// }
-/// let mut command = common();
-/// command.mut_arg("input", |arg| arg.short(None));
-/// ```
-#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub enum Resettable<T> {
- /// Overwrite builder value
- Value(T),
- /// Reset builder value
- Reset,
-}
-
-impl<T> Resettable<T> {
- pub(crate) fn into_option(self) -> Option<T> {
- match self {
- Self::Value(t) => Some(t),
- Self::Reset => None,
- }
- }
-}
-
-impl<T> From<T> for Resettable<T> {
- fn from(other: T) -> Self {
- Self::Value(other)
- }
-}
-
-impl<T> From<Option<T>> for Resettable<T> {
- fn from(other: Option<T>) -> Self {
- match other {
- Some(inner) => Self::Value(inner),
- None => Self::Reset,
- }
- }
-}
-
-/// Convert to the intended resettable type
-pub trait IntoResettable<T> {
- /// Convert to the intended resettable type
- fn into_resettable(self) -> Resettable<T>;
-}
-
-impl IntoResettable<char> for Option<char> {
- fn into_resettable(self) -> Resettable<char> {
- match self {
- Some(s) => Resettable::Value(s),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<usize> for Option<usize> {
- fn into_resettable(self) -> Resettable<usize> {
- match self {
- Some(s) => Resettable::Value(s),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<ArgAction> for Option<ArgAction> {
- fn into_resettable(self) -> Resettable<ArgAction> {
- match self {
- Some(s) => Resettable::Value(s),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<ValueHint> for Option<ValueHint> {
- fn into_resettable(self) -> Resettable<ValueHint> {
- match self {
- Some(s) => Resettable::Value(s),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<ValueParser> for Option<ValueParser> {
- fn into_resettable(self) -> Resettable<ValueParser> {
- match self {
- Some(s) => Resettable::Value(s),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<StyledStr> for Option<&'static str> {
- fn into_resettable(self) -> Resettable<StyledStr> {
- match self {
- Some(s) => Resettable::Value(s.into()),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<OsStr> for Option<&'static str> {
- fn into_resettable(self) -> Resettable<OsStr> {
- match self {
- Some(s) => Resettable::Value(s.into()),
- None => Resettable::Reset,
- }
- }
-}
-
-impl IntoResettable<Str> for Option<&'static str> {
- fn into_resettable(self) -> Resettable<Str> {
- match self {
- Some(s) => Resettable::Value(s.into()),
- None => Resettable::Reset,
- }
- }
-}
-
-impl<T> IntoResettable<T> for Resettable<T> {
- fn into_resettable(self) -> Resettable<T> {
- self
- }
-}
-
-impl IntoResettable<char> for char {
- fn into_resettable(self) -> Resettable<char> {
- Resettable::Value(self)
- }
-}
-
-impl IntoResettable<usize> for usize {
- fn into_resettable(self) -> Resettable<usize> {
- Resettable::Value(self)
- }
-}
-
-impl IntoResettable<ArgAction> for ArgAction {
- fn into_resettable(self) -> Resettable<ArgAction> {
- Resettable::Value(self)
- }
-}
-
-impl IntoResettable<ValueHint> for ValueHint {
- fn into_resettable(self) -> Resettable<ValueHint> {
- Resettable::Value(self)
- }
-}
-
-impl<I: Into<ValueRange>> IntoResettable<ValueRange> for I {
- fn into_resettable(self) -> Resettable<ValueRange> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<ValueParser>> IntoResettable<ValueParser> for I {
- fn into_resettable(self) -> Resettable<ValueParser> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<String>> IntoResettable<String> for I {
- fn into_resettable(self) -> Resettable<String> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<StyledStr>> IntoResettable<StyledStr> for I {
- fn into_resettable(self) -> Resettable<StyledStr> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<OsStr>> IntoResettable<OsStr> for I {
- fn into_resettable(self) -> Resettable<OsStr> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<Str>> IntoResettable<Str> for I {
- fn into_resettable(self) -> Resettable<Str> {
- Resettable::Value(self.into())
- }
-}
-
-impl<I: Into<crate::Id>> IntoResettable<crate::Id> for I {
- fn into_resettable(self) -> Resettable<crate::Id> {
- Resettable::Value(self.into())
- }
-}
diff --git a/vendor/clap/src/builder/str.rs b/vendor/clap/src/builder/str.rs
deleted file mode 100644
index c6689d310..000000000
--- a/vendor/clap/src/builder/str.rs
+++ /dev/null
@@ -1,307 +0,0 @@
-/// A UTF-8-encoded fixed string
-///
-/// **NOTE:** To support dynamic values (i.e. `String`), enable the [`string`
-/// feature][crate::_features]
-#[derive(Default, Clone, Eq, PartialEq, PartialOrd, Ord, Hash)]
-pub struct Str {
- name: Inner,
-}
-
-impl Str {
- #[cfg(feature = "string")]
- pub(crate) fn from_string(name: std::string::String) -> Self {
- Self {
- name: Inner::from_string(name),
- }
- }
-
- #[cfg(feature = "string")]
- pub(crate) fn from_ref(name: &str) -> Self {
- Self {
- name: Inner::from_ref(name),
- }
- }
-
- pub(crate) fn from_static_ref(name: &'static str) -> Self {
- Self {
- name: Inner::from_static_ref(name),
- }
- }
-
- pub(crate) fn into_inner(self) -> Inner {
- self.name
- }
-
- /// Get the raw string of the `Str`
- pub fn as_str(&self) -> &str {
- self.name.as_str()
- }
-}
-
-impl From<&'_ Str> for Str {
- fn from(id: &'_ Str) -> Self {
- id.clone()
- }
-}
-
-#[cfg(feature = "string")]
-impl From<std::string::String> for Str {
- fn from(name: std::string::String) -> Self {
- Self::from_string(name)
- }
-}
-
-#[cfg(feature = "string")]
-impl From<&'_ std::string::String> for Str {
- fn from(name: &'_ std::string::String) -> Self {
- Self::from_ref(name.as_str())
- }
-}
-
-impl From<&'static str> for Str {
- fn from(name: &'static str) -> Self {
- Self::from_static_ref(name)
- }
-}
-
-impl From<&'_ &'static str> for Str {
- fn from(name: &'_ &'static str) -> Self {
- Self::from_static_ref(name)
- }
-}
-
-impl From<Str> for String {
- fn from(name: Str) -> Self {
- name.name.into_string()
- }
-}
-
-impl From<Str> for Vec<u8> {
- fn from(name: Str) -> Self {
- String::from(name).into()
- }
-}
-
-impl From<Str> for std::ffi::OsString {
- fn from(name: Str) -> Self {
- String::from(name).into()
- }
-}
-
-impl From<Str> for std::path::PathBuf {
- fn from(name: Str) -> Self {
- String::from(name).into()
- }
-}
-
-impl std::fmt::Display for Str {
- #[inline]
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- std::fmt::Display::fmt(self.as_str(), f)
- }
-}
-
-impl std::fmt::Debug for Str {
- #[inline]
- fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- std::fmt::Debug::fmt(self.as_str(), f)
- }
-}
-
-impl std::ops::Deref for Str {
- type Target = str;
-
- #[inline]
- fn deref(&self) -> &str {
- self.as_str()
- }
-}
-
-impl AsRef<str> for Str {
- #[inline]
- fn as_ref(&self) -> &str {
- self.as_str()
- }
-}
-
-impl AsRef<[u8]> for Str {
- #[inline]
- fn as_ref(&self) -> &[u8] {
- self.as_bytes()
- }
-}
-
-impl AsRef<std::ffi::OsStr> for Str {
- #[inline]
- fn as_ref(&self) -> &std::ffi::OsStr {
- (**self).as_ref()
- }
-}
-
-impl AsRef<std::path::Path> for Str {
- #[inline]
- fn as_ref(&self) -> &std::path::Path {
- std::path::Path::new(self)
- }
-}
-
-impl std::borrow::Borrow<str> for Str {
- #[inline]
- fn borrow(&self) -> &str {
- self.as_str()
- }
-}
-
-impl PartialEq<str> for Str {
- #[inline]
- fn eq(&self, other: &str) -> bool {
- PartialEq::eq(self.as_str(), other)
- }
-}
-impl PartialEq<Str> for str {
- #[inline]
- fn eq(&self, other: &Str) -> bool {
- PartialEq::eq(self, other.as_str())
- }
-}
-
-impl PartialEq<&'_ str> for Str {
- #[inline]
- fn eq(&self, other: &&str) -> bool {
- PartialEq::eq(self.as_str(), *other)
- }
-}
-impl PartialEq<Str> for &'_ str {
- #[inline]
- fn eq(&self, other: &Str) -> bool {
- PartialEq::eq(*self, other.as_str())
- }
-}
-
-impl PartialEq<std::ffi::OsStr> for Str {
- #[inline]
- fn eq(&self, other: &std::ffi::OsStr) -> bool {
- PartialEq::eq(self.as_str(), other)
- }
-}
-impl PartialEq<Str> for std::ffi::OsStr {
- #[inline]
- fn eq(&self, other: &Str) -> bool {
- PartialEq::eq(self, other.as_str())
- }
-}
-
-impl PartialEq<&'_ std::ffi::OsStr> for Str {
- #[inline]
- fn eq(&self, other: &&std::ffi::OsStr) -> bool {
- PartialEq::eq(self.as_str(), *other)
- }
-}
-impl PartialEq<Str> for &'_ std::ffi::OsStr {
- #[inline]
- fn eq(&self, other: &Str) -> bool {
- PartialEq::eq(*self, other.as_str())
- }
-}
-
-impl PartialEq<std::string::String> for Str {
- #[inline]
- fn eq(&self, other: &std::string::String) -> bool {
- PartialEq::eq(self.as_str(), other.as_str())
- }
-}
-impl PartialEq<Str> for std::string::String {
- #[inline]
- fn eq(&self, other: &Str) -> bool {
- PartialEq::eq(self.as_str(), other.as_str())
- }
-}
-
-#[cfg(feature = "string")]
-pub(crate) mod inner {
- #[derive(Clone)]
- pub(crate) enum Inner {
- Static(&'static str),
- Owned(Box<str>),
- }
-
- impl Inner {
- pub(crate) fn from_string(name: std::string::String) -> Self {
- Self::Owned(name.into_boxed_str())
- }
-
- pub(crate) fn from_ref(name: &str) -> Self {
- Self::Owned(Box::from(name))
- }
-
- pub(crate) fn from_static_ref(name: &'static str) -> Self {
- Self::Static(name)
- }
-
- pub(crate) fn as_str(&self) -> &str {
- match self {
- Self::Static(s) => s,
- Self::Owned(s) => s.as_ref(),
- }
- }
-
- pub(crate) fn into_string(self) -> String {
- self.as_str().to_owned()
- }
- }
-}
-
-#[cfg(not(feature = "string"))]
-pub(crate) mod inner {
- #[derive(Clone)]
- pub(crate) struct Inner(pub(crate) &'static str);
-
- impl Inner {
- pub(crate) fn from_static_ref(name: &'static str) -> Self {
- Self(name)
- }
-
- pub(crate) fn as_str(&self) -> &str {
- self.0
- }
-
- pub(crate) fn into_string(self) -> String {
- self.as_str().to_owned()
- }
- }
-}
-
-pub(crate) use inner::Inner;
-
-impl Default for Inner {
- fn default() -> Self {
- Self::from_static_ref("")
- }
-}
-
-impl PartialEq for Inner {
- fn eq(&self, other: &Inner) -> bool {
- self.as_str() == other.as_str()
- }
-}
-
-impl PartialOrd for Inner {
- fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
- self.as_str().partial_cmp(other.as_str())
- }
-}
-
-impl Ord for Inner {
- fn cmp(&self, other: &Inner) -> std::cmp::Ordering {
- self.as_str().cmp(other.as_str())
- }
-}
-
-impl Eq for Inner {}
-
-impl std::hash::Hash for Inner {
- #[inline]
- fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
- self.as_str().hash(state);
- }
-}
diff --git a/vendor/clap/src/builder/styled_str.rs b/vendor/clap/src/builder/styled_str.rs
deleted file mode 100644
index d36329dee..000000000
--- a/vendor/clap/src/builder/styled_str.rs
+++ /dev/null
@@ -1,349 +0,0 @@
-/// Terminal-styling container
-///
-/// For now, this is the same as a [`Str`][crate::builder::Str]. This exists to reserve space in
-/// the API for exposing terminal styling.
-#[derive(Clone, Default, Debug, PartialEq, Eq)]
-pub struct StyledStr {
- #[cfg(feature = "color")]
- pieces: Vec<(Option<Style>, String)>,
- #[cfg(not(feature = "color"))]
- pieces: String,
-}
-
-impl StyledStr {
- /// Create an empty buffer
- #[cfg(feature = "color")]
- pub const fn new() -> Self {
- Self { pieces: Vec::new() }
- }
-
- /// Create an empty buffer
- #[cfg(not(feature = "color"))]
- pub const fn new() -> Self {
- Self {
- pieces: String::new(),
- }
- }
-
- /// Display using [ANSI Escape Code](https://en.wikipedia.org/wiki/ANSI_escape_code) styling
- #[cfg(feature = "color")]
- pub fn ansi(&self) -> impl std::fmt::Display + '_ {
- AnsiDisplay { styled: self }
- }
-
- pub(crate) fn header(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Header), msg.into());
- }
-
- pub(crate) fn literal(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Literal), msg.into());
- }
-
- pub(crate) fn placeholder(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Placeholder), msg.into());
- }
-
- #[cfg_attr(not(feature = "error-context"), allow(dead_code))]
- pub(crate) fn good(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Good), msg.into());
- }
-
- #[cfg_attr(not(feature = "error-context"), allow(dead_code))]
- pub(crate) fn warning(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Warning), msg.into());
- }
-
- pub(crate) fn error(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Error), msg.into());
- }
-
- #[allow(dead_code)]
- pub(crate) fn hint(&mut self, msg: impl Into<String>) {
- self.stylize_(Some(Style::Hint), msg.into());
- }
-
- pub(crate) fn none(&mut self, msg: impl Into<String>) {
- self.stylize_(None, msg.into());
- }
-
- pub(crate) fn stylize(&mut self, style: impl Into<Option<Style>>, msg: impl Into<String>) {
- self.stylize_(style.into(), msg.into());
- }
-
- pub(crate) fn trim(&mut self) {
- self.trim_start();
- self.trim_end();
- }
-
- pub(crate) fn trim_start(&mut self) {
- if let Some((_, item)) = self.iter_mut().next() {
- *item = item.trim_start().to_owned();
- }
- }
-
- #[cfg(feature = "color")]
- pub(crate) fn trim_end(&mut self) {
- if let Some((_, item)) = self.pieces.last_mut() {
- *item = item.trim_end().to_owned();
- }
- }
-
- #[cfg(not(feature = "color"))]
- pub(crate) fn trim_end(&mut self) {
- self.pieces = self.pieces.trim_end().to_owned();
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn indent(&mut self, initial: &str, trailing: &str) {
- if let Some((_, first)) = self.iter_mut().next() {
- first.insert_str(0, initial);
- }
- let mut line_sep = "\n".to_owned();
- line_sep.push_str(trailing);
- for (_, content) in self.iter_mut() {
- *content = content.replace('\n', &line_sep);
- }
- }
-
- #[cfg(all(not(feature = "wrap_help"), feature = "help"))]
- pub(crate) fn wrap(&mut self, _hard_width: usize) {}
-
- #[cfg(feature = "wrap_help")]
- pub(crate) fn wrap(&mut self, hard_width: usize) {
- let mut wrapper = crate::output::textwrap::wrap_algorithms::LineWrapper::new(hard_width);
- for (_, content) in self.iter_mut() {
- let mut total = Vec::new();
- for (i, line) in content.split_inclusive('\n').enumerate() {
- if 0 < i {
- // start of a section does not imply newline
- wrapper.reset();
- }
- let line = crate::output::textwrap::word_separators::find_words_ascii_space(line)
- .collect::<Vec<_>>();
- total.extend(wrapper.wrap(line));
- }
- let total = total.join("");
- *content = total;
- }
-
- self.trim_end();
- }
-
- #[cfg(feature = "color")]
- fn stylize_(&mut self, style: Option<Style>, msg: String) {
- if !msg.is_empty() {
- self.pieces.push((style, msg));
- }
- }
-
- #[cfg(not(feature = "color"))]
- fn stylize_(&mut self, _style: Option<Style>, msg: String) {
- self.pieces.push_str(&msg);
- }
-
- #[inline(never)]
- #[cfg(feature = "help")]
- pub(crate) fn display_width(&self) -> usize {
- let mut width = 0;
- for (_, c) in self.iter() {
- width += crate::output::display_width(c);
- }
- width
- }
-
- #[cfg(feature = "help")]
- pub(crate) fn is_empty(&self) -> bool {
- self.pieces.is_empty()
- }
-
- #[cfg(feature = "color")]
- pub(crate) fn iter(&self) -> impl Iterator<Item = (Option<Style>, &str)> {
- self.pieces.iter().map(|(s, c)| (*s, c.as_str()))
- }
-
- #[cfg(not(feature = "color"))]
- pub(crate) fn iter(&self) -> impl Iterator<Item = (Option<Style>, &str)> {
- [(None, self.pieces.as_str())].into_iter()
- }
-
- #[cfg(feature = "color")]
- pub(crate) fn iter_mut(&mut self) -> impl Iterator<Item = (Option<Style>, &mut String)> {
- self.pieces.iter_mut().map(|(s, c)| (*s, c))
- }
-
- #[cfg(not(feature = "color"))]
- pub(crate) fn iter_mut(&mut self) -> impl Iterator<Item = (Option<Style>, &mut String)> {
- [(None, &mut self.pieces)].into_iter()
- }
-
- #[cfg(feature = "color")]
- pub(crate) fn into_iter(self) -> impl Iterator<Item = (Option<Style>, String)> {
- self.pieces.into_iter()
- }
-
- #[cfg(not(feature = "color"))]
- pub(crate) fn into_iter(self) -> impl Iterator<Item = (Option<Style>, String)> {
- [(None, self.pieces)].into_iter()
- }
-
- pub(crate) fn extend(
- &mut self,
- other: impl IntoIterator<Item = (impl Into<Option<Style>>, impl Into<String>)>,
- ) {
- for (style, content) in other {
- self.stylize(style.into(), content.into());
- }
- }
-
- #[cfg(feature = "color")]
- pub(crate) fn write_colored(&self, buffer: &mut termcolor::Buffer) -> std::io::Result<()> {
- use std::io::Write;
- use termcolor::WriteColor;
-
- for (style, content) in &self.pieces {
- let mut color = termcolor::ColorSpec::new();
- match style {
- Some(Style::Header) => {
- color.set_bold(true);
- color.set_underline(true);
- }
- Some(Style::Literal) => {
- color.set_bold(true);
- }
- Some(Style::Placeholder) => {}
- Some(Style::Good) => {
- color.set_fg(Some(termcolor::Color::Green));
- }
- Some(Style::Warning) => {
- color.set_fg(Some(termcolor::Color::Yellow));
- }
- Some(Style::Error) => {
- color.set_fg(Some(termcolor::Color::Red));
- color.set_bold(true);
- }
- Some(Style::Hint) => {
- color.set_dimmed(true);
- }
- None => {}
- }
-
- ok!(buffer.set_color(&color));
- ok!(buffer.write_all(content.as_bytes()));
- ok!(buffer.reset());
- }
-
- Ok(())
- }
-}
-
-impl Default for &'_ StyledStr {
- fn default() -> Self {
- static DEFAULT: StyledStr = StyledStr::new();
- &DEFAULT
- }
-}
-
-impl From<std::string::String> for StyledStr {
- fn from(name: std::string::String) -> Self {
- let mut styled = StyledStr::new();
- styled.none(name);
- styled
- }
-}
-
-impl From<&'_ std::string::String> for StyledStr {
- fn from(name: &'_ std::string::String) -> Self {
- let mut styled = StyledStr::new();
- styled.none(name);
- styled
- }
-}
-
-impl From<&'static str> for StyledStr {
- fn from(name: &'static str) -> Self {
- let mut styled = StyledStr::new();
- styled.none(name);
- styled
- }
-}
-
-impl From<&'_ &'static str> for StyledStr {
- fn from(name: &'_ &'static str) -> Self {
- StyledStr::from(*name)
- }
-}
-
-impl PartialOrd for StyledStr {
- fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
- Some(self.cmp(other))
- }
-}
-
-impl Ord for StyledStr {
- fn cmp(&self, other: &Self) -> std::cmp::Ordering {
- self.iter().map(cmp_key).cmp(other.iter().map(cmp_key))
- }
-}
-
-fn cmp_key(c: (Option<Style>, &str)) -> (Option<usize>, &str) {
- let style = c.0.map(|s| s.as_usize());
- let content = c.1;
- (style, content)
-}
-
-/// Color-unaware printing. Never uses coloring.
-impl std::fmt::Display for StyledStr {
- fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
- for (_, content) in self.iter() {
- ok!(std::fmt::Display::fmt(content, f));
- }
-
- Ok(())
- }
-}
-
-#[cfg(feature = "color")]
-struct AnsiDisplay<'s> {
- styled: &'s StyledStr,
-}
-
-#[cfg(feature = "color")]
-impl std::fmt::Display for AnsiDisplay<'_> {
- fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
- let mut buffer = termcolor::Buffer::ansi();
- ok!(self
- .styled
- .write_colored(&mut buffer)
- .map_err(|_| std::fmt::Error));
- let buffer = buffer.into_inner();
- let buffer = ok!(String::from_utf8(buffer).map_err(|_| std::fmt::Error));
- ok!(std::fmt::Display::fmt(&buffer, f));
-
- Ok(())
- }
-}
-
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
-pub(crate) enum Style {
- Header,
- Literal,
- Placeholder,
- Good,
- Warning,
- Error,
- Hint,
-}
-
-impl Style {
- fn as_usize(&self) -> usize {
- match self {
- Self::Header => 0,
- Self::Literal => 1,
- Self::Placeholder => 2,
- Self::Good => 3,
- Self::Warning => 4,
- Self::Error => 5,
- Self::Hint => 6,
- }
- }
-}
diff --git a/vendor/clap/src/builder/tests.rs b/vendor/clap/src/builder/tests.rs
deleted file mode 100644
index 15cb8c4f4..000000000
--- a/vendor/clap/src/builder/tests.rs
+++ /dev/null
@@ -1,56 +0,0 @@
-use crate::Arg;
-use crate::Command;
-
-#[test]
-fn propagate_version() {
- let mut cmd = Command::new("test")
- .propagate_version(true)
- .version("1.1")
- .subcommand(Command::new("sub1"));
- cmd._propagate();
- assert_eq!(
- cmd.get_subcommands().next().unwrap().get_version(),
- Some("1.1")
- );
-}
-
-#[test]
-fn global_setting() {
- let mut cmd = Command::new("test")
- .disable_version_flag(true)
- .subcommand(Command::new("subcmd"));
- cmd._propagate();
- assert!(cmd
- .get_subcommands()
- .find(|s| s.get_name() == "subcmd")
- .unwrap()
- .is_disable_version_flag_set());
-}
-
-// This test will *fail to compile* if Command is not Send + Sync
-#[test]
-fn app_send_sync() {
- fn foo<T: Send + Sync>(_: T) {}
- foo(Command::new("test"))
-}
-
-#[test]
-fn issue_2090() {
- let mut cmd = Command::new("cmd")
- .disable_version_flag(true)
- .subcommand(Command::new("sub"));
- cmd._build_self(false);
-
- assert!(cmd
- .get_subcommands()
- .next()
- .unwrap()
- .is_disable_version_flag_set());
-}
-
-// This test will *fail to compile* if Arg is not Send + Sync
-#[test]
-fn arg_send_sync() {
- fn foo<T: Send + Sync>(_: T) {}
- foo(Arg::new("test"))
-}
diff --git a/vendor/clap/src/builder/value_hint.rs b/vendor/clap/src/builder/value_hint.rs
deleted file mode 100644
index 812d5d866..000000000
--- a/vendor/clap/src/builder/value_hint.rs
+++ /dev/null
@@ -1,95 +0,0 @@
-use std::str::FromStr;
-
-/// Provide shell with hint on how to complete an argument.
-///
-/// See [Arg::value_hint][crate::Arg::value_hint] to set this on an argument.
-///
-/// See the `clap_complete` crate for completion script generation.
-///
-/// Overview of which hints are supported by which shell:
-///
-/// | Hint | zsh | fish[^1]|
-/// | ---------------------- | --- | ------- |
-/// | `AnyPath` | Yes | Yes |
-/// | `FilePath` | Yes | Yes |
-/// | `DirPath` | Yes | Yes |
-/// | `ExecutablePath` | Yes | Partial |
-/// | `CommandName` | Yes | Yes |
-/// | `CommandString` | Yes | Partial |
-/// | `CommandWithArguments` | Yes | |
-/// | `Username` | Yes | Yes |
-/// | `Hostname` | Yes | Yes |
-/// | `Url` | Yes | |
-/// | `EmailAddress` | Yes | |
-///
-/// [^1]: fish completions currently only support named arguments (e.g. -o or --opt), not
-/// positional arguments.
-#[derive(Debug, PartialEq, Eq, Hash, Copy, Clone)]
-#[non_exhaustive]
-pub enum ValueHint {
- /// Default value if hint is not specified. Follows shell default behavior, which is usually
- /// auto-completing filenames.
- Unknown,
- /// None of the hints below apply. Disables shell completion for this argument.
- Other,
- /// Any existing path.
- AnyPath,
- /// Path to a file.
- FilePath,
- /// Path to a directory.
- DirPath,
- /// Path to an executable file.
- ExecutablePath,
- /// Name of a command, without arguments. May be relative to PATH, or full path to executable.
- CommandName,
- /// A single string containing a command and its arguments.
- CommandString,
- /// Capture the remaining arguments as a command name and arguments for that command. This is
- /// common when writing shell wrappers that execute anther command, for example `sudo` or `env`.
- ///
- /// This hint is special, the argument must be a positional argument and have
- /// [`.num_args(1..)`] and Command must use [`Command::trailing_var_arg(true)`]. The result is that the
- /// command line `my_app ls -la /` will be parsed as `["ls", "-la", "/"]` and clap won't try to
- /// parse the `-la` argument itself.
- ///
- /// [`Command::trailing_var_arg(true)`]: crate::Command::trailing_var_arg
- /// [`.num_args(1..)`]: crate::Arg::num_args()
- CommandWithArguments,
- /// Name of a local operating system user.
- Username,
- /// Host name of a computer.
- /// Shells usually parse `/etc/hosts` and `.ssh/known_hosts` to complete hostnames.
- Hostname,
- /// Complete web address.
- Url,
- /// Email address.
- EmailAddress,
-}
-
-impl Default for ValueHint {
- fn default() -> Self {
- ValueHint::Unknown
- }
-}
-
-impl FromStr for ValueHint {
- type Err = String;
- fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err> {
- Ok(match &*s.to_ascii_lowercase() {
- "unknown" => ValueHint::Unknown,
- "other" => ValueHint::Other,
- "anypath" => ValueHint::AnyPath,
- "filepath" => ValueHint::FilePath,
- "dirpath" => ValueHint::DirPath,
- "executablepath" => ValueHint::ExecutablePath,
- "commandname" => ValueHint::CommandName,
- "commandstring" => ValueHint::CommandString,
- "commandwitharguments" => ValueHint::CommandWithArguments,
- "username" => ValueHint::Username,
- "hostname" => ValueHint::Hostname,
- "url" => ValueHint::Url,
- "emailaddress" => ValueHint::EmailAddress,
- _ => return Err(format!("unknown ValueHint: `{}`", s)),
- })
- }
-}
diff --git a/vendor/clap/src/builder/value_parser.rs b/vendor/clap/src/builder/value_parser.rs
deleted file mode 100644
index 191e8ae76..000000000
--- a/vendor/clap/src/builder/value_parser.rs
+++ /dev/null
@@ -1,2435 +0,0 @@
-use std::convert::TryInto;
-use std::ops::RangeBounds;
-
-use crate::parser::AnyValue;
-use crate::parser::AnyValueId;
-
-/// Parse/validate argument values
-///
-/// Specified with [`Arg::value_parser`][crate::Arg::value_parser].
-///
-/// `ValueParser` defines how to convert a raw argument value into a validated and typed value for
-/// use within an application.
-///
-/// See
-/// - [`value_parser!`][crate::value_parser] for automatically selecting an implementation for a given type
-/// - [`ValueParser::new`] for additional [`TypedValueParser`] that can be used
-///
-/// # Example
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("color")
-/// .long("color")
-/// .value_parser(["always", "auto", "never"])
-/// .default_value("auto")
-/// )
-/// .arg(
-/// clap::Arg::new("hostname")
-/// .long("hostname")
-/// .value_parser(clap::builder::NonEmptyStringValueParser::new())
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// )
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(clap::value_parser!(u16).range(3000..))
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(
-/// ["cmd", "--hostname", "rust-lang.org", "--port", "3001"]
-/// ).unwrap();
-///
-/// let color: &String = m.get_one("color")
-/// .expect("default");
-/// assert_eq!(color, "auto");
-///
-/// let hostname: &String = m.get_one("hostname")
-/// .expect("required");
-/// assert_eq!(hostname, "rust-lang.org");
-///
-/// let port: u16 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-pub struct ValueParser(ValueParserInner);
-
-enum ValueParserInner {
- // Common enough to optimize and for possible values
- Bool,
- // Common enough to optimize
- String,
- // Common enough to optimize
- OsString,
- // Common enough to optimize
- PathBuf,
- Other(Box<dyn AnyValueParser>),
-}
-
-impl ValueParser {
- /// Custom parser for argument values
- ///
- /// Pre-existing [`TypedValueParser`] implementations include:
- /// - `Fn(&str) -> Result<T, E>`
- /// - [`EnumValueParser`] and [`PossibleValuesParser`] for static enumerated values
- /// - [`BoolishValueParser`] and [`FalseyValueParser`] for alternative `bool` implementations
- /// - [`RangedI64ValueParser`] and [`RangedU64ValueParser`]
- /// - [`NonEmptyStringValueParser`]
- ///
- /// # Example
- ///
- /// ```rust
- /// type EnvVar = (String, Option<String>);
- /// fn parse_env_var(env: &str) -> Result<EnvVar, std::io::Error> {
- /// if let Some((var, value)) = env.split_once('=') {
- /// Ok((var.to_owned(), Some(value.to_owned())))
- /// } else {
- /// Ok((env.to_owned(), None))
- /// }
- /// }
- ///
- /// let mut cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("env")
- /// .value_parser(clap::builder::ValueParser::new(parse_env_var))
- /// .required(true)
- /// );
- ///
- /// let m = cmd.try_get_matches_from_mut(["cmd", "key=value"]).unwrap();
- /// let port: &EnvVar = m.get_one("env")
- /// .expect("required");
- /// assert_eq!(*port, ("key".into(), Some("value".into())));
- /// ```
- pub fn new<P>(other: P) -> Self
- where
- P: TypedValueParser,
- {
- Self(ValueParserInner::Other(Box::new(other)))
- }
-
- /// [`bool`] parser for argument values
- ///
- /// See also:
- /// - [`BoolishValueParser`] for different human readable bool representations
- /// - [`FalseyValueParser`] for assuming non-false is true
- ///
- /// # Example
- ///
- /// ```rust
- /// let mut cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("download")
- /// .value_parser(clap::value_parser!(bool))
- /// .required(true)
- /// );
- ///
- /// let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
- /// let port: bool = *m.get_one("download")
- /// .expect("required");
- /// assert_eq!(port, true);
- ///
- /// assert!(cmd.try_get_matches_from_mut(["cmd", "forever"]).is_err());
- /// ```
- pub const fn bool() -> Self {
- Self(ValueParserInner::Bool)
- }
-
- /// [`String`] parser for argument values
- ///
- /// See also:
- /// - [`NonEmptyStringValueParser`]
- ///
- /// # Example
- ///
- /// ```rust
- /// let mut cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("port")
- /// .value_parser(clap::value_parser!(String))
- /// .required(true)
- /// );
- ///
- /// let m = cmd.try_get_matches_from_mut(["cmd", "80"]).unwrap();
- /// let port: &String = m.get_one("port")
- /// .expect("required");
- /// assert_eq!(port, "80");
- /// ```
- pub const fn string() -> Self {
- Self(ValueParserInner::String)
- }
-
- /// [`OsString`][std::ffi::OsString] parser for argument values
- ///
- /// # Example
- ///
- #[cfg_attr(not(unix), doc = " ```ignore")]
- #[cfg_attr(unix, doc = " ```rust")]
- /// # use clap::{Command, Arg, builder::ValueParser};
- /// use std::ffi::OsString;
- /// use std::os::unix::ffi::{OsStrExt,OsStringExt};
- /// let r = Command::new("myprog")
- /// .arg(
- /// Arg::new("arg")
- /// .required(true)
- /// .value_parser(ValueParser::os_string())
- /// )
- /// .try_get_matches_from(vec![
- /// OsString::from("myprog"),
- /// OsString::from_vec(vec![0xe9])
- /// ]);
- ///
- /// assert!(r.is_ok());
- /// let m = r.unwrap();
- /// let arg: &OsString = m.get_one("arg")
- /// .expect("required");
- /// assert_eq!(arg.as_bytes(), &[0xe9]);
- /// ```
- pub const fn os_string() -> Self {
- Self(ValueParserInner::OsString)
- }
-
- /// [`PathBuf`][std::path::PathBuf] parser for argument values
- ///
- /// # Example
- ///
- /// ```rust
- /// # use std::path::PathBuf;
- /// # use std::path::Path;
- /// let mut cmd = clap::Command::new("raw")
- /// .arg(
- /// clap::Arg::new("output")
- /// .value_parser(clap::value_parser!(PathBuf))
- /// .required(true)
- /// );
- ///
- /// let m = cmd.try_get_matches_from_mut(["cmd", "hello.txt"]).unwrap();
- /// let port: &PathBuf = m.get_one("output")
- /// .expect("required");
- /// assert_eq!(port, Path::new("hello.txt"));
- ///
- /// assert!(cmd.try_get_matches_from_mut(["cmd", ""]).is_err());
- /// ```
- pub const fn path_buf() -> Self {
- Self(ValueParserInner::PathBuf)
- }
-}
-
-impl ValueParser {
- /// Parse into a `AnyValue`
- ///
- /// When `arg` is `None`, an external subcommand value is being parsed.
- pub(crate) fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<AnyValue, crate::Error> {
- self.any_value_parser().parse_ref(cmd, arg, value)
- }
-
- /// Describes the content of `AnyValue`
- pub fn type_id(&self) -> AnyValueId {
- self.any_value_parser().type_id()
- }
-
- /// Reflect on enumerated value properties
- ///
- /// Error checking should not be done with this; it is mostly targeted at user-facing
- /// applications like errors and completion.
- pub fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- self.any_value_parser().possible_values()
- }
-
- fn any_value_parser(&self) -> &dyn AnyValueParser {
- match &self.0 {
- ValueParserInner::Bool => &BoolValueParser {},
- ValueParserInner::String => &StringValueParser {},
- ValueParserInner::OsString => &OsStringValueParser {},
- ValueParserInner::PathBuf => &PathBufValueParser {},
- ValueParserInner::Other(o) => o.as_ref(),
- }
- }
-}
-
-/// Convert a [`TypedValueParser`] to [`ValueParser`]
-///
-/// # Example
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("hostname")
-/// .long("hostname")
-/// .value_parser(clap::builder::NonEmptyStringValueParser::new())
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(
-/// ["cmd", "--hostname", "rust-lang.org"]
-/// ).unwrap();
-///
-/// let hostname: &String = m.get_one("hostname")
-/// .expect("required");
-/// assert_eq!(hostname, "rust-lang.org");
-/// ```
-impl<P> From<P> for ValueParser
-where
- P: TypedValueParser + Send + Sync + 'static,
-{
- fn from(p: P) -> Self {
- Self::new(p)
- }
-}
-
-impl From<_AnonymousValueParser> for ValueParser {
- fn from(p: _AnonymousValueParser) -> Self {
- p.0
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `N..M` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(3000..4000)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-impl From<std::ops::Range<i64>> for ValueParser {
- fn from(value: std::ops::Range<i64>) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(value.start..value.end);
- Self::from(inner)
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `N..=M` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(3000..=4000)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-impl From<std::ops::RangeInclusive<i64>> for ValueParser {
- fn from(value: std::ops::RangeInclusive<i64>) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(value.start()..=value.end());
- Self::from(inner)
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `N..` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(3000..)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-impl From<std::ops::RangeFrom<i64>> for ValueParser {
- fn from(value: std::ops::RangeFrom<i64>) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(value.start..);
- Self::from(inner)
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `..M` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(..3000)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "80"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 80);
-/// ```
-impl From<std::ops::RangeTo<i64>> for ValueParser {
- fn from(value: std::ops::RangeTo<i64>) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(..value.end);
- Self::from(inner)
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `..=M` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(..=3000)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "80"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 80);
-/// ```
-impl From<std::ops::RangeToInclusive<i64>> for ValueParser {
- fn from(value: std::ops::RangeToInclusive<i64>) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(..=value.end);
- Self::from(inner)
- }
-}
-
-/// Create an `i64` [`ValueParser`] from a `..` range
-///
-/// See [`RangedI64ValueParser`] for more control over the output type.
-///
-/// See also [`RangedU64ValueParser`]
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(..)
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: i64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-impl From<std::ops::RangeFull> for ValueParser {
- fn from(value: std::ops::RangeFull) -> Self {
- let inner = RangedI64ValueParser::<i64>::new().range(value);
- Self::from(inner)
- }
-}
-
-/// Create a [`ValueParser`] with [`PossibleValuesParser`]
-///
-/// See [`PossibleValuesParser`] for more flexibility in creating the
-/// [`PossibleValue`][crate::builder::PossibleValue]s.
-///
-/// # Examples
-///
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("color")
-/// .long("color")
-/// .value_parser(["always", "auto", "never"])
-/// .default_value("auto")
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(
-/// ["cmd", "--color", "never"]
-/// ).unwrap();
-///
-/// let color: &String = m.get_one("color")
-/// .expect("default");
-/// assert_eq!(color, "never");
-/// ```
-impl<P, const C: usize> From<[P; C]> for ValueParser
-where
- P: Into<super::PossibleValue>,
-{
- fn from(values: [P; C]) -> Self {
- let inner = PossibleValuesParser::from(values);
- Self::from(inner)
- }
-}
-
-/// Create a [`ValueParser`] with [`PossibleValuesParser`]
-///
-/// See [`PossibleValuesParser`] for more flexibility in creating the
-/// [`PossibleValue`][crate::builder::PossibleValue]s.
-///
-/// # Examples
-///
-/// ```rust
-/// let possible = vec!["always", "auto", "never"];
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("color")
-/// .long("color")
-/// .value_parser(possible)
-/// .default_value("auto")
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(
-/// ["cmd", "--color", "never"]
-/// ).unwrap();
-///
-/// let color: &String = m.get_one("color")
-/// .expect("default");
-/// assert_eq!(color, "never");
-/// ```
-impl<P> From<Vec<P>> for ValueParser
-where
- P: Into<super::PossibleValue>,
-{
- fn from(values: Vec<P>) -> Self {
- let inner = PossibleValuesParser::from(values);
- Self::from(inner)
- }
-}
-
-impl std::fmt::Debug for ValueParser {
- fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
- match &self.0 {
- ValueParserInner::Bool => f.debug_struct("ValueParser::bool").finish(),
- ValueParserInner::String => f.debug_struct("ValueParser::string").finish(),
- ValueParserInner::OsString => f.debug_struct("ValueParser::os_string").finish(),
- ValueParserInner::PathBuf => f.debug_struct("ValueParser::path_buf").finish(),
- ValueParserInner::Other(o) => write!(f, "ValueParser::other({:?})", o.type_id()),
- }
- }
-}
-
-impl Clone for ValueParser {
- fn clone(&self) -> Self {
- Self(match &self.0 {
- ValueParserInner::Bool => ValueParserInner::Bool,
- ValueParserInner::String => ValueParserInner::String,
- ValueParserInner::OsString => ValueParserInner::OsString,
- ValueParserInner::PathBuf => ValueParserInner::PathBuf,
- ValueParserInner::Other(o) => ValueParserInner::Other(o.clone_any()),
- })
- }
-}
-
-/// A type-erased wrapper for [`TypedValueParser`].
-trait AnyValueParser: Send + Sync + 'static {
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<AnyValue, crate::Error>;
-
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<AnyValue, crate::Error>;
-
- /// Describes the content of `AnyValue`
- fn type_id(&self) -> AnyValueId;
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>>;
-
- fn clone_any(&self) -> Box<dyn AnyValueParser>;
-}
-
-impl<T, P> AnyValueParser for P
-where
- T: std::any::Any + Clone + Send + Sync + 'static,
- P: TypedValueParser<Value = T>,
-{
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<AnyValue, crate::Error> {
- let value = ok!(TypedValueParser::parse_ref(self, cmd, arg, value));
- Ok(AnyValue::new(value))
- }
-
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<AnyValue, crate::Error> {
- let value = ok!(TypedValueParser::parse(self, cmd, arg, value));
- Ok(AnyValue::new(value))
- }
-
- fn type_id(&self) -> AnyValueId {
- AnyValueId::of::<T>()
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- P::possible_values(self)
- }
-
- fn clone_any(&self) -> Box<dyn AnyValueParser> {
- Box::new(self.clone())
- }
-}
-
-/// Parse/validate argument values
-///
-/// As alternatives to implementing `TypedValueParser`,
-/// - Use `Fn(&str) -> Result<T, E>` which implements `TypedValueParser`
-/// - [`TypedValueParser::map`] or [`TypedValueParser::try_map`] to adapt an existing `TypedValueParser`
-///
-/// See `ValueParserFactory` to register `TypedValueParser::Value` with
-/// [`value_parser!`][crate::value_parser].
-///
-/// # Example
-///
-#[cfg_attr(not(feature = "error-context"), doc = " ```ignore")]
-#[cfg_attr(feature = "error-context", doc = " ```")]
-/// # use clap::error::ErrorKind;
-/// # use clap::error::ContextKind;
-/// # use clap::error::ContextValue;
-/// #[derive(Clone)]
-/// struct Custom(u32);
-///
-/// #[derive(Clone)]
-/// struct CustomValueParser;
-///
-/// impl clap::builder::TypedValueParser for CustomValueParser {
-/// type Value = Custom;
-///
-/// fn parse_ref(
-/// &self,
-/// cmd: &clap::Command,
-/// arg: Option<&clap::Arg>,
-/// value: &std::ffi::OsStr,
-/// ) -> Result<Self::Value, clap::Error> {
-/// let inner = clap::value_parser!(u32);
-/// let val = inner.parse_ref(cmd, arg, value)?;
-///
-/// const INVALID_VALUE: u32 = 10;
-/// if val == INVALID_VALUE {
-/// let mut err = clap::Error::new(ErrorKind::ValueValidation)
-/// .with_cmd(cmd);
-/// if let Some(arg) = arg {
-/// err.insert(ContextKind::InvalidArg, ContextValue::String(arg.to_string()));
-/// }
-/// err.insert(ContextKind::InvalidValue, ContextValue::String(INVALID_VALUE.to_string()));
-/// return Err(err);
-/// }
-///
-/// Ok(Custom(val))
-/// }
-/// }
-/// ```
-pub trait TypedValueParser: Clone + Send + Sync + 'static {
- /// Argument's value type
- type Value: Send + Sync + Clone;
-
- /// Parse the argument value
- ///
- /// When `arg` is `None`, an external subcommand value is being parsed.
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error>;
-
- /// Parse the argument value
- ///
- /// When `arg` is `None`, an external subcommand value is being parsed.
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<Self::Value, crate::Error> {
- self.parse_ref(cmd, arg, &value)
- }
-
- /// Reflect on enumerated value properties
- ///
- /// Error checking should not be done with this; it is mostly targeted at user-facing
- /// applications like errors and completion.
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- None
- }
-
- /// Adapt a `TypedValueParser` from one value to another
- ///
- /// # Example
- ///
- /// ```rust
- /// # use clap::Command;
- /// # use clap::Arg;
- /// # use clap::builder::TypedValueParser as _;
- /// # use clap::builder::BoolishValueParser;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .action(clap::ArgAction::SetTrue)
- /// .value_parser(
- /// BoolishValueParser::new()
- /// .map(|b| -> usize {
- /// if b { 10 } else { 5 }
- /// })
- /// )
- /// );
- ///
- /// let matches = cmd.clone().try_get_matches_from(["mycmd", "--flag"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_one::<usize>("flag").copied(),
- /// Some(10)
- /// );
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_one::<usize>("flag").copied(),
- /// Some(5)
- /// );
- /// ```
- fn map<T, F>(self, func: F) -> MapValueParser<Self, F>
- where
- T: Send + Sync + Clone,
- F: Fn(Self::Value) -> T + Clone,
- {
- MapValueParser::new(self, func)
- }
-
- /// Adapt a `TypedValueParser` from one value to another
- ///
- /// # Example
- ///
- /// ```rust
- /// # use std::ffi::OsString;
- /// # use std::ffi::OsStr;
- /// # use std::path::PathBuf;
- /// # use std::path::Path;
- /// # use clap::Command;
- /// # use clap::Arg;
- /// # use clap::builder::TypedValueParser as _;
- /// # use clap::builder::OsStringValueParser;
- /// let cmd = Command::new("mycmd")
- /// .arg(
- /// Arg::new("flag")
- /// .long("flag")
- /// .value_parser(
- /// OsStringValueParser::new()
- /// .try_map(verify_ext)
- /// )
- /// );
- ///
- /// fn verify_ext(os: OsString) -> Result<PathBuf, &'static str> {
- /// let path = PathBuf::from(os);
- /// if path.extension() != Some(OsStr::new("rs")) {
- /// return Err("only Rust files are supported");
- /// }
- /// Ok(path)
- /// }
- ///
- /// let error = cmd.clone().try_get_matches_from(["mycmd", "--flag", "foo.txt"]).unwrap_err();
- /// error.print();
- ///
- /// let matches = cmd.try_get_matches_from(["mycmd", "--flag", "foo.rs"]).unwrap();
- /// assert!(matches.contains_id("flag"));
- /// assert_eq!(
- /// matches.get_one::<PathBuf>("flag").map(|s| s.as_path()),
- /// Some(Path::new("foo.rs"))
- /// );
- /// ```
- fn try_map<T, E, F>(self, func: F) -> TryMapValueParser<Self, F>
- where
- F: Fn(Self::Value) -> Result<T, E> + Clone + Send + Sync + 'static,
- T: Send + Sync + Clone,
- E: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
- {
- TryMapValueParser::new(self, func)
- }
-}
-
-impl<F, T, E> TypedValueParser for F
-where
- F: Fn(&str) -> Result<T, E> + Clone + Send + Sync + 'static,
- E: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
- T: Send + Sync + Clone,
-{
- type Value = T;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- let value = ok!((self)(value).map_err(|e| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(arg, value.to_owned(), e.into()).with_cmd(cmd)
- }));
- Ok(value)
- }
-}
-
-/// Implementation for [`ValueParser::string`]
-///
-/// Useful for composing new [`TypedValueParser`]s
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct StringValueParser {}
-
-impl StringValueParser {
- /// Implementation for [`ValueParser::string`]
- pub fn new() -> Self {
- Self {}
- }
-}
-
-impl TypedValueParser for StringValueParser {
- type Value = String;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- TypedValueParser::parse(self, cmd, arg, value.to_owned())
- }
-
- fn parse(
- &self,
- cmd: &crate::Command,
- _arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(value.into_string().map_err(|_| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- Ok(value)
- }
-}
-
-impl Default for StringValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Implementation for [`ValueParser::os_string`]
-///
-/// Useful for composing new [`TypedValueParser`]s
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct OsStringValueParser {}
-
-impl OsStringValueParser {
- /// Implementation for [`ValueParser::os_string`]
- pub fn new() -> Self {
- Self {}
- }
-}
-
-impl TypedValueParser for OsStringValueParser {
- type Value = std::ffi::OsString;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- TypedValueParser::parse(self, cmd, arg, value.to_owned())
- }
-
- fn parse(
- &self,
- _cmd: &crate::Command,
- _arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<Self::Value, crate::Error> {
- Ok(value)
- }
-}
-
-impl Default for OsStringValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Implementation for [`ValueParser::path_buf`]
-///
-/// Useful for composing new [`TypedValueParser`]s
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct PathBufValueParser {}
-
-impl PathBufValueParser {
- /// Implementation for [`ValueParser::path_buf`]
- pub fn new() -> Self {
- Self {}
- }
-}
-
-impl TypedValueParser for PathBufValueParser {
- type Value = std::path::PathBuf;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- TypedValueParser::parse(self, cmd, arg, value.to_owned())
- }
-
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<Self::Value, crate::Error> {
- if value.is_empty() {
- return Err(crate::Error::empty_value(
- cmd,
- &[],
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- ));
- }
- Ok(Self::Value::from(value))
- }
-}
-
-impl Default for PathBufValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Parse an [`ValueEnum`][crate::ValueEnum] value.
-///
-/// See also:
-/// - [`PossibleValuesParser`]
-///
-/// # Example
-///
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::ColorChoice;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-///
-/// // Usage
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("color")
-/// .value_parser(clap::builder::EnumValueParser::<ColorChoice>::new())
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "always"]).unwrap();
-/// let port: ColorChoice = *m.get_one("color")
-/// .expect("required");
-/// assert_eq!(port, ColorChoice::Always);
-///
-/// // Semantics
-/// let value_parser = clap::builder::EnumValueParser::<ColorChoice>::new();
-/// // or
-/// let value_parser = clap::value_parser!(ColorChoice);
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("always")).unwrap(), ColorChoice::Always);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("auto")).unwrap(), ColorChoice::Auto);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("never")).unwrap(), ColorChoice::Never);
-/// ```
-#[derive(Clone, Debug)]
-pub struct EnumValueParser<E: crate::ValueEnum + Clone + Send + Sync + 'static>(
- std::marker::PhantomData<E>,
-);
-
-impl<E: crate::ValueEnum + Clone + Send + Sync + 'static> EnumValueParser<E> {
- /// Parse an [`ValueEnum`][crate::ValueEnum]
- pub fn new() -> Self {
- let phantom: std::marker::PhantomData<E> = Default::default();
- Self(phantom)
- }
-}
-
-impl<E: crate::ValueEnum + Clone + Send + Sync + 'static> TypedValueParser for EnumValueParser<E> {
- type Value = E;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let ignore_case = arg.map(|a| a.is_ignore_case_set()).unwrap_or(false);
- let possible_vals = || {
- E::value_variants()
- .iter()
- .filter_map(|v| v.to_possible_value())
- .filter(|v| !v.is_hide_set())
- .map(|v| v.get_name().to_owned())
- .collect::<Vec<_>>()
- };
-
- let value = ok!(value.to_str().ok_or_else(|| {
- crate::Error::invalid_value(
- cmd,
- value.to_string_lossy().into_owned(),
- &possible_vals(),
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- )
- }));
- let value = ok!(E::value_variants()
- .iter()
- .find(|v| {
- v.to_possible_value()
- .expect("ValueEnum::value_variants contains only values with a corresponding ValueEnum::to_possible_value")
- .matches(value, ignore_case)
- })
- .ok_or_else(|| {
- crate::Error::invalid_value(
- cmd,
- value.to_owned(),
- &possible_vals(),
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- )
- }))
- .clone();
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- Some(Box::new(
- E::value_variants()
- .iter()
- .filter_map(|v| v.to_possible_value()),
- ))
- }
-}
-
-impl<E: crate::ValueEnum + Clone + Send + Sync + 'static> Default for EnumValueParser<E> {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Verify the value is from an enumerated set of [`PossibleValue`][crate::builder::PossibleValue].
-///
-/// See also:
-/// - [`EnumValueParser`] for directly supporting [`ValueEnum`][crate::ValueEnum] types
-/// - [`TypedValueParser::map`] for adapting values to a more specialized type, like an external
-/// enums that can't implement [`ValueEnum`][crate::ValueEnum]
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("color")
-/// .value_parser(clap::builder::PossibleValuesParser::new(["always", "auto", "never"]))
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "always"]).unwrap();
-/// let port: &String = m.get_one("color")
-/// .expect("required");
-/// assert_eq!(port, "always");
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::PossibleValuesParser::new(["always", "auto", "never"]);
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("always")).unwrap(), "always");
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("auto")).unwrap(), "auto");
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("never")).unwrap(), "never");
-/// ```
-#[derive(Clone, Debug)]
-pub struct PossibleValuesParser(Vec<super::PossibleValue>);
-
-impl PossibleValuesParser {
- /// Verify the value is from an enumerated set pf [`PossibleValue`][crate::builder::PossibleValue].
- pub fn new(values: impl Into<PossibleValuesParser>) -> Self {
- values.into()
- }
-}
-
-impl TypedValueParser for PossibleValuesParser {
- type Value = String;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- TypedValueParser::parse(self, cmd, arg, value.to_owned())
- }
-
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<String, crate::Error> {
- let value = ok!(value.into_string().map_err(|_| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
-
- let ignore_case = arg.map(|a| a.is_ignore_case_set()).unwrap_or(false);
- if self.0.iter().any(|v| v.matches(&value, ignore_case)) {
- Ok(value)
- } else {
- let possible_vals = self
- .0
- .iter()
- .filter(|v| !v.is_hide_set())
- .map(|v| v.get_name().to_owned())
- .collect::<Vec<_>>();
-
- Err(crate::Error::invalid_value(
- cmd,
- value,
- &possible_vals,
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- ))
- }
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- Some(Box::new(self.0.iter().cloned()))
- }
-}
-
-impl<I, T> From<I> for PossibleValuesParser
-where
- I: IntoIterator<Item = T>,
- T: Into<super::PossibleValue>,
-{
- fn from(values: I) -> Self {
- Self(values.into_iter().map(|t| t.into()).collect())
- }
-}
-
-/// Parse number that fall within a range of values
-///
-/// **NOTE:** To capture negative values, you will also need to set
-/// [`Arg::allow_negative_numbers`][crate::Arg::allow_negative_numbers] or
-/// [`Arg::allow_hyphen_values`][crate::Arg::allow_hyphen_values].
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(clap::value_parser!(u16).range(3000..))
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: u16 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::RangedI64ValueParser::<i32>::new().range(-1..200);
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("-200")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("300")).is_err());
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("-1")).unwrap(), -1);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("0")).unwrap(), 0);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("50")).unwrap(), 50);
-/// ```
-#[derive(Copy, Clone, Debug)]
-pub struct RangedI64ValueParser<T: std::convert::TryFrom<i64> + Clone + Send + Sync = i64> {
- bounds: (std::ops::Bound<i64>, std::ops::Bound<i64>),
- target: std::marker::PhantomData<T>,
-}
-
-impl<T: std::convert::TryFrom<i64> + Clone + Send + Sync> RangedI64ValueParser<T> {
- /// Select full range of `i64`
- pub fn new() -> Self {
- Self::from(..)
- }
-
- /// Narrow the supported range
- pub fn range<B: RangeBounds<i64>>(mut self, range: B) -> Self {
- // Consideration: when the user does `value_parser!(u8).range()`
- // - Avoid programming mistakes by accidentally expanding the range
- // - Make it convenient to limit the range like with `..10`
- let start = match range.start_bound() {
- l @ std::ops::Bound::Included(i) => {
- debug_assert!(
- self.bounds.contains(i),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- l @ std::ops::Bound::Excluded(i) => {
- debug_assert!(
- self.bounds.contains(&i.saturating_add(1)),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- std::ops::Bound::Unbounded => self.bounds.start_bound().cloned(),
- };
- let end = match range.end_bound() {
- l @ std::ops::Bound::Included(i) => {
- debug_assert!(
- self.bounds.contains(i),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- l @ std::ops::Bound::Excluded(i) => {
- debug_assert!(
- self.bounds.contains(&i.saturating_sub(1)),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- std::ops::Bound::Unbounded => self.bounds.end_bound().cloned(),
- };
- self.bounds = (start, end);
- self
- }
-
- fn format_bounds(&self) -> String {
- let mut result = match self.bounds.0 {
- std::ops::Bound::Included(i) => i.to_string(),
- std::ops::Bound::Excluded(i) => i.saturating_add(1).to_string(),
- std::ops::Bound::Unbounded => i64::MIN.to_string(),
- };
- result.push_str("..");
- match self.bounds.1 {
- std::ops::Bound::Included(i) => {
- result.push('=');
- result.push_str(&i.to_string());
- }
- std::ops::Bound::Excluded(i) => {
- result.push_str(&i.to_string());
- }
- std::ops::Bound::Unbounded => {
- result.push_str(&i64::MAX.to_string());
- }
- }
- result
- }
-}
-
-impl<T: std::convert::TryFrom<i64> + Clone + Send + Sync + 'static> TypedValueParser
- for RangedI64ValueParser<T>
-where
- <T as std::convert::TryFrom<i64>>::Error: Send + Sync + 'static + std::error::Error + ToString,
-{
- type Value = T;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- raw_value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(raw_value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- let value = ok!(value.parse::<i64>().map_err(|err| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- err.into(),
- )
- .with_cmd(cmd)
- }));
- if !self.bounds.contains(&value) {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- return Err(crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- format!("{} is not in {}", value, self.format_bounds()).into(),
- )
- .with_cmd(cmd));
- }
-
- let value: Result<Self::Value, _> = value.try_into();
- let value = ok!(value.map_err(|err| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- err.into(),
- )
- .with_cmd(cmd)
- }));
-
- Ok(value)
- }
-}
-
-impl<T: std::convert::TryFrom<i64> + Clone + Send + Sync, B: RangeBounds<i64>> From<B>
- for RangedI64ValueParser<T>
-{
- fn from(range: B) -> Self {
- Self {
- bounds: (range.start_bound().cloned(), range.end_bound().cloned()),
- target: Default::default(),
- }
- }
-}
-
-impl<T: std::convert::TryFrom<i64> + Clone + Send + Sync> Default for RangedI64ValueParser<T> {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Parse number that fall within a range of values
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("port")
-/// .long("port")
-/// .value_parser(clap::value_parser!(u64).range(3000..))
-/// .action(clap::ArgAction::Set)
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "--port", "3001"]).unwrap();
-/// let port: u64 = *m.get_one("port")
-/// .expect("required");
-/// assert_eq!(port, 3001);
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::RangedU64ValueParser::<u32>::new().range(0..200);
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("-200")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("300")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("-1")).is_err());
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("0")).unwrap(), 0);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("50")).unwrap(), 50);
-/// ```
-#[derive(Copy, Clone, Debug)]
-pub struct RangedU64ValueParser<T: std::convert::TryFrom<u64> = u64> {
- bounds: (std::ops::Bound<u64>, std::ops::Bound<u64>),
- target: std::marker::PhantomData<T>,
-}
-
-impl<T: std::convert::TryFrom<u64>> RangedU64ValueParser<T> {
- /// Select full range of `u64`
- pub fn new() -> Self {
- Self::from(..)
- }
-
- /// Narrow the supported range
- pub fn range<B: RangeBounds<u64>>(mut self, range: B) -> Self {
- // Consideration: when the user does `value_parser!(u8).range()`
- // - Avoid programming mistakes by accidentally expanding the range
- // - Make it convenient to limit the range like with `..10`
- let start = match range.start_bound() {
- l @ std::ops::Bound::Included(i) => {
- debug_assert!(
- self.bounds.contains(i),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- l @ std::ops::Bound::Excluded(i) => {
- debug_assert!(
- self.bounds.contains(&i.saturating_add(1)),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- std::ops::Bound::Unbounded => self.bounds.start_bound().cloned(),
- };
- let end = match range.end_bound() {
- l @ std::ops::Bound::Included(i) => {
- debug_assert!(
- self.bounds.contains(i),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- l @ std::ops::Bound::Excluded(i) => {
- debug_assert!(
- self.bounds.contains(&i.saturating_sub(1)),
- "{} must be in {:?}",
- i,
- self.bounds
- );
- l.cloned()
- }
- std::ops::Bound::Unbounded => self.bounds.end_bound().cloned(),
- };
- self.bounds = (start, end);
- self
- }
-
- fn format_bounds(&self) -> String {
- let mut result = match self.bounds.0 {
- std::ops::Bound::Included(i) => i.to_string(),
- std::ops::Bound::Excluded(i) => i.saturating_add(1).to_string(),
- std::ops::Bound::Unbounded => u64::MIN.to_string(),
- };
- result.push_str("..");
- match self.bounds.1 {
- std::ops::Bound::Included(i) => {
- result.push('=');
- result.push_str(&i.to_string());
- }
- std::ops::Bound::Excluded(i) => {
- result.push_str(&i.to_string());
- }
- std::ops::Bound::Unbounded => {
- result.push_str(&u64::MAX.to_string());
- }
- }
- result
- }
-}
-
-impl<T: std::convert::TryFrom<u64> + Clone + Send + Sync + 'static> TypedValueParser
- for RangedU64ValueParser<T>
-where
- <T as std::convert::TryFrom<u64>>::Error: Send + Sync + 'static + std::error::Error + ToString,
-{
- type Value = T;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- raw_value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(raw_value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- let value = ok!(value.parse::<u64>().map_err(|err| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- err.into(),
- )
- .with_cmd(cmd)
- }));
- if !self.bounds.contains(&value) {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- return Err(crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- format!("{} is not in {}", value, self.format_bounds()).into(),
- )
- .with_cmd(cmd));
- }
-
- let value: Result<Self::Value, _> = value.try_into();
- let value = ok!(value.map_err(|err| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(
- arg,
- raw_value.to_string_lossy().into_owned(),
- err.into(),
- )
- .with_cmd(cmd)
- }));
-
- Ok(value)
- }
-}
-
-impl<T: std::convert::TryFrom<u64>, B: RangeBounds<u64>> From<B> for RangedU64ValueParser<T> {
- fn from(range: B) -> Self {
- Self {
- bounds: (range.start_bound().cloned(), range.end_bound().cloned()),
- target: Default::default(),
- }
- }
-}
-
-impl<T: std::convert::TryFrom<u64>> Default for RangedU64ValueParser<T> {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Implementation for [`ValueParser::bool`]
-///
-/// Useful for composing new [`TypedValueParser`]s
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct BoolValueParser {}
-
-impl BoolValueParser {
- /// Implementation for [`ValueParser::bool`]
- pub fn new() -> Self {
- Self {}
- }
-
- fn possible_values() -> impl Iterator<Item = crate::builder::PossibleValue> {
- ["true", "false"]
- .iter()
- .copied()
- .map(crate::builder::PossibleValue::new)
- }
-}
-
-impl TypedValueParser for BoolValueParser {
- type Value = bool;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = if value == std::ffi::OsStr::new("true") {
- true
- } else if value == std::ffi::OsStr::new("false") {
- false
- } else {
- // Intentionally showing hidden as we hide all of them
- let possible_vals = Self::possible_values()
- .map(|v| v.get_name().to_owned())
- .collect::<Vec<_>>();
-
- return Err(crate::Error::invalid_value(
- cmd,
- value.to_string_lossy().into_owned(),
- &possible_vals,
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- ));
- };
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- Some(Box::new(Self::possible_values()))
- }
-}
-
-impl Default for BoolValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Parse false-like string values, everything else is `true`
-///
-/// See also:
-/// - [`ValueParser::bool`] for assuming non-false is true
-/// - [`BoolishValueParser`] for different human readable bool representations
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("append")
-/// .value_parser(clap::builder::FalseyValueParser::new())
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
-/// let port: bool = *m.get_one("append")
-/// .expect("required");
-/// assert_eq!(port, true);
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::FalseyValueParser::new();
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("100")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("false")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("No")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("oFF")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("0")).unwrap(), false);
-/// ```
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct FalseyValueParser {}
-
-impl FalseyValueParser {
- /// Parse false-like string values, everything else is `true`
- pub fn new() -> Self {
- Self {}
- }
-
- fn possible_values() -> impl Iterator<Item = crate::builder::PossibleValue> {
- crate::util::TRUE_LITERALS
- .iter()
- .chain(crate::util::FALSE_LITERALS.iter())
- .copied()
- .map(|l| crate::builder::PossibleValue::new(l).hide(l != "true" && l != "false"))
- }
-}
-
-impl TypedValueParser for FalseyValueParser {
- type Value = bool;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- _arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- let value = if value.is_empty() {
- false
- } else {
- crate::util::str_to_bool(value).unwrap_or(true)
- };
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- Some(Box::new(Self::possible_values()))
- }
-}
-
-impl Default for FalseyValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Parse bool-like string values, everything else is `true`
-///
-/// See also:
-/// - [`ValueParser::bool`] for different human readable bool representations
-/// - [`FalseyValueParser`] for assuming non-false is true
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("append")
-/// .value_parser(clap::builder::BoolishValueParser::new())
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
-/// let port: bool = *m.get_one("append")
-/// .expect("required");
-/// assert_eq!(port, true);
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::BoolishValueParser::new();
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("100")).is_err());
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("true")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("Yes")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("oN")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("1")).unwrap(), true);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("false")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("No")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("oFF")).unwrap(), false);
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("0")).unwrap(), false);
-/// ```
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct BoolishValueParser {}
-
-impl BoolishValueParser {
- /// Parse bool-like string values, everything else is `true`
- pub fn new() -> Self {
- Self {}
- }
-
- fn possible_values() -> impl Iterator<Item = crate::builder::PossibleValue> {
- crate::util::TRUE_LITERALS
- .iter()
- .chain(crate::util::FALSE_LITERALS.iter())
- .copied()
- .map(|l| crate::builder::PossibleValue::new(l).hide(l != "true" && l != "false"))
- }
-}
-
-impl TypedValueParser for BoolishValueParser {
- type Value = bool;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- let value = ok!(crate::util::str_to_bool(value).ok_or_else(|| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(arg, value.to_owned(), "value was not a boolean".into())
- .with_cmd(cmd)
- }));
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- Some(Box::new(Self::possible_values()))
- }
-}
-
-impl Default for BoolishValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Parse non-empty string values
-///
-/// See also:
-/// - [`ValueParser::string`]
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("append")
-/// .value_parser(clap::builder::NonEmptyStringValueParser::new())
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
-/// let port: &String = m.get_one("append")
-/// .expect("required");
-/// assert_eq!(port, "true");
-/// ```
-///
-/// Semantics:
-/// ```rust
-/// # use std::ffi::OsStr;
-/// # use clap::builder::TypedValueParser;
-/// # let cmd = clap::Command::new("test");
-/// # let arg = None;
-/// let value_parser = clap::builder::NonEmptyStringValueParser::new();
-/// assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).unwrap(), "random");
-/// assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
-/// ```
-#[derive(Copy, Clone, Debug)]
-#[non_exhaustive]
-pub struct NonEmptyStringValueParser {}
-
-impl NonEmptyStringValueParser {
- /// Parse non-empty string values
- pub fn new() -> Self {
- Self {}
- }
-}
-
-impl TypedValueParser for NonEmptyStringValueParser {
- type Value = String;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- if value.is_empty() {
- return Err(crate::Error::empty_value(
- cmd,
- &[],
- arg.map(ToString::to_string)
- .unwrap_or_else(|| "...".to_owned()),
- ));
- }
- let value = ok!(value.to_str().ok_or_else(|| {
- crate::Error::invalid_utf8(
- cmd,
- crate::output::Usage::new(cmd).create_usage_with_title(&[]),
- )
- }));
- Ok(value.to_owned())
- }
-}
-
-impl Default for NonEmptyStringValueParser {
- fn default() -> Self {
- Self::new()
- }
-}
-
-/// Adapt a `TypedValueParser` from one value to another
-///
-/// See [`TypedValueParser::map`]
-#[derive(Clone, Debug)]
-pub struct MapValueParser<P, F> {
- parser: P,
- func: F,
-}
-
-impl<P, F, T> MapValueParser<P, F>
-where
- P: TypedValueParser,
- P::Value: Send + Sync + Clone,
- F: Fn(P::Value) -> T + Clone,
- T: Send + Sync + Clone,
-{
- fn new(parser: P, func: F) -> Self {
- Self { parser, func }
- }
-}
-
-impl<P, F, T> TypedValueParser for MapValueParser<P, F>
-where
- P: TypedValueParser,
- P::Value: Send + Sync + Clone,
- F: Fn(P::Value) -> T + Clone + Send + Sync + 'static,
- T: Send + Sync + Clone,
-{
- type Value = T;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(self.parser.parse_ref(cmd, arg, value));
- let value = (self.func)(value);
- Ok(value)
- }
-
- fn parse(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: std::ffi::OsString,
- ) -> Result<Self::Value, crate::Error> {
- let value = ok!(self.parser.parse(cmd, arg, value));
- let value = (self.func)(value);
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- self.parser.possible_values()
- }
-}
-
-/// Adapt a `TypedValueParser` from one value to another
-///
-/// See [`TypedValueParser::try_map`]
-#[derive(Clone, Debug)]
-pub struct TryMapValueParser<P, F> {
- parser: P,
- func: F,
-}
-
-impl<P, F, T, E> TryMapValueParser<P, F>
-where
- P: TypedValueParser,
- P::Value: Send + Sync + Clone,
- F: Fn(P::Value) -> Result<T, E> + Clone + Send + Sync + 'static,
- T: Send + Sync + Clone,
- E: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
-{
- fn new(parser: P, func: F) -> Self {
- Self { parser, func }
- }
-}
-
-impl<P, F, T, E> TypedValueParser for TryMapValueParser<P, F>
-where
- P: TypedValueParser,
- P::Value: Send + Sync + Clone,
- F: Fn(P::Value) -> Result<T, E> + Clone + Send + Sync + 'static,
- T: Send + Sync + Clone,
- E: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
-{
- type Value = T;
-
- fn parse_ref(
- &self,
- cmd: &crate::Command,
- arg: Option<&crate::Arg>,
- value: &std::ffi::OsStr,
- ) -> Result<Self::Value, crate::Error> {
- let mid_value = ok!(self.parser.parse_ref(cmd, arg, value));
- let value = ok!((self.func)(mid_value).map_err(|e| {
- let arg = arg
- .map(|a| a.to_string())
- .unwrap_or_else(|| "...".to_owned());
- crate::Error::value_validation(arg, value.to_string_lossy().into_owned(), e.into())
- .with_cmd(cmd)
- }));
- Ok(value)
- }
-
- fn possible_values(
- &self,
- ) -> Option<Box<dyn Iterator<Item = crate::builder::PossibleValue> + '_>> {
- self.parser.possible_values()
- }
-}
-
-/// Register a type with [value_parser!][crate::value_parser!]
-///
-/// # Example
-///
-/// ```rust
-/// #[derive(Copy, Clone, Debug)]
-/// pub struct Custom(u32);
-///
-/// impl clap::builder::ValueParserFactory for Custom {
-/// type Parser = CustomValueParser;
-/// fn value_parser() -> Self::Parser {
-/// CustomValueParser
-/// }
-/// }
-///
-/// #[derive(Clone, Debug)]
-/// pub struct CustomValueParser;
-/// impl clap::builder::TypedValueParser for CustomValueParser {
-/// type Value = Custom;
-///
-/// fn parse_ref(
-/// &self,
-/// cmd: &clap::Command,
-/// arg: Option<&clap::Arg>,
-/// value: &std::ffi::OsStr,
-/// ) -> Result<Self::Value, clap::Error> {
-/// let inner = clap::value_parser!(u32);
-/// let val = inner.parse_ref(cmd, arg, value)?;
-/// Ok(Custom(val))
-/// }
-/// }
-///
-/// let parser: CustomValueParser = clap::value_parser!(Custom);
-/// ```
-pub trait ValueParserFactory {
- /// Generated parser, usually [`ValueParser`].
- ///
- /// It should at least be a type that supports `Into<ValueParser>`. A non-`ValueParser` type
- /// allows the caller to do further initialization on the parser.
- type Parser;
-
- /// Create the specified [`Self::Parser`]
- fn value_parser() -> Self::Parser;
-}
-impl ValueParserFactory for String {
- type Parser = ValueParser;
- fn value_parser() -> Self::Parser {
- ValueParser::string() // Default `clap_derive` to optimized implementation
- }
-}
-impl ValueParserFactory for std::ffi::OsString {
- type Parser = ValueParser;
- fn value_parser() -> Self::Parser {
- ValueParser::os_string() // Default `clap_derive` to optimized implementation
- }
-}
-impl ValueParserFactory for std::path::PathBuf {
- type Parser = ValueParser;
- fn value_parser() -> Self::Parser {
- ValueParser::path_buf() // Default `clap_derive` to optimized implementation
- }
-}
-impl ValueParserFactory for bool {
- type Parser = ValueParser;
- fn value_parser() -> Self::Parser {
- ValueParser::bool() // Default `clap_derive` to optimized implementation
- }
-}
-impl ValueParserFactory for u8 {
- type Parser = RangedI64ValueParser<u8>;
- fn value_parser() -> Self::Parser {
- let start: i64 = u8::MIN.into();
- let end: i64 = u8::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for i8 {
- type Parser = RangedI64ValueParser<i8>;
- fn value_parser() -> Self::Parser {
- let start: i64 = i8::MIN.into();
- let end: i64 = i8::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for u16 {
- type Parser = RangedI64ValueParser<u16>;
- fn value_parser() -> Self::Parser {
- let start: i64 = u16::MIN.into();
- let end: i64 = u16::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for i16 {
- type Parser = RangedI64ValueParser<i16>;
- fn value_parser() -> Self::Parser {
- let start: i64 = i16::MIN.into();
- let end: i64 = i16::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for u32 {
- type Parser = RangedI64ValueParser<u32>;
- fn value_parser() -> Self::Parser {
- let start: i64 = u32::MIN.into();
- let end: i64 = u32::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for i32 {
- type Parser = RangedI64ValueParser<i32>;
- fn value_parser() -> Self::Parser {
- let start: i64 = i32::MIN.into();
- let end: i64 = i32::MAX.into();
- RangedI64ValueParser::new().range(start..=end)
- }
-}
-impl ValueParserFactory for i64 {
- type Parser = RangedI64ValueParser<i64>;
- fn value_parser() -> Self::Parser {
- RangedI64ValueParser::new()
- }
-}
-impl ValueParserFactory for u64 {
- type Parser = RangedU64ValueParser<u64>;
- fn value_parser() -> Self::Parser {
- RangedU64ValueParser::new()
- }
-}
-
-#[doc(hidden)]
-#[derive(Debug)]
-pub struct _AutoValueParser<T>(std::marker::PhantomData<T>);
-
-impl<T> _AutoValueParser<T> {
- #[doc(hidden)]
- #[allow(clippy::new_without_default)]
- pub fn new() -> Self {
- Self(Default::default())
- }
-}
-
-/// Unstable [`ValueParser`]
-///
-/// Implementation may change to more specific instance in the future
-#[doc(hidden)]
-#[derive(Debug)]
-pub struct _AnonymousValueParser(ValueParser);
-
-#[doc(hidden)]
-pub mod via_prelude {
- use super::*;
-
- #[doc(hidden)]
- pub trait _ValueParserViaFactory: private::_ValueParserViaFactorySealed {
- type Parser;
- fn value_parser(&self) -> Self::Parser;
- }
- impl<P: ValueParserFactory> _ValueParserViaFactory for &&&&&&_AutoValueParser<P> {
- type Parser = P::Parser;
- fn value_parser(&self) -> Self::Parser {
- P::value_parser()
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaValueEnum: private::_ValueParserViaValueEnumSealed {
- type Output;
-
- fn value_parser(&self) -> Self::Output;
- }
- impl<E: crate::ValueEnum + Clone + Send + Sync + 'static> _ValueParserViaValueEnum
- for &&&&&_AutoValueParser<E>
- {
- type Output = EnumValueParser<E>;
-
- fn value_parser(&self) -> Self::Output {
- EnumValueParser::<E>::new()
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaFromOsString: private::_ValueParserViaFromOsStringSealed {
- fn value_parser(&self) -> _AnonymousValueParser;
- }
- impl<FromOsString> _ValueParserViaFromOsString for &&&&_AutoValueParser<FromOsString>
- where
- FromOsString: From<std::ffi::OsString> + std::any::Any + Clone + Send + Sync + 'static,
- {
- fn value_parser(&self) -> _AnonymousValueParser {
- _AnonymousValueParser(
- OsStringValueParser::new()
- .map(|s| FromOsString::from(s))
- .into(),
- )
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaFromOsStr: private::_ValueParserViaFromOsStrSealed {
- fn value_parser(&self) -> _AnonymousValueParser;
- }
- impl<FromOsStr> _ValueParserViaFromOsStr for &&&_AutoValueParser<FromOsStr>
- where
- FromOsStr:
- for<'s> From<&'s std::ffi::OsStr> + std::any::Any + Clone + Send + Sync + 'static,
- {
- fn value_parser(&self) -> _AnonymousValueParser {
- _AnonymousValueParser(
- OsStringValueParser::new()
- .map(|s| FromOsStr::from(&s))
- .into(),
- )
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaFromString: private::_ValueParserViaFromStringSealed {
- fn value_parser(&self) -> _AnonymousValueParser;
- }
- impl<FromString> _ValueParserViaFromString for &&_AutoValueParser<FromString>
- where
- FromString: From<String> + std::any::Any + Clone + Send + Sync + 'static,
- {
- fn value_parser(&self) -> _AnonymousValueParser {
- _AnonymousValueParser(StringValueParser::new().map(|s| FromString::from(s)).into())
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaFromStr: private::_ValueParserViaFromStrSealed {
- fn value_parser(&self) -> _AnonymousValueParser;
- }
- impl<FromStr> _ValueParserViaFromStr for &_AutoValueParser<FromStr>
- where
- FromStr: for<'s> From<&'s str> + std::any::Any + Clone + Send + Sync + 'static,
- {
- fn value_parser(&self) -> _AnonymousValueParser {
- _AnonymousValueParser(StringValueParser::new().map(|s| FromStr::from(&s)).into())
- }
- }
-
- #[doc(hidden)]
- pub trait _ValueParserViaParse: private::_ValueParserViaParseSealed {
- fn value_parser(&self) -> _AnonymousValueParser;
- }
- impl<Parse> _ValueParserViaParse for _AutoValueParser<Parse>
- where
- Parse: std::str::FromStr + std::any::Any + Clone + Send + Sync + 'static,
- <Parse as std::str::FromStr>::Err: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
- {
- fn value_parser(&self) -> _AnonymousValueParser {
- let func: fn(&str) -> Result<Parse, <Parse as std::str::FromStr>::Err> =
- Parse::from_str;
- _AnonymousValueParser(ValueParser::new(func))
- }
- }
-}
-
-/// Select a [`ValueParser`] implementation from the intended type
-///
-/// Supported types
-/// - [`ValueParserFactory` types][ValueParserFactory], including
-/// - [Native types][ValueParser]: `bool`, `String`, `OsString`, `PathBuf`
-/// - [Ranged numeric types][RangedI64ValueParser]: `u8`, `i8`, `u16`, `i16`, `u32`, `i32`, `u64`, `i64`
-/// - [`ValueEnum` types][crate::ValueEnum]
-/// - [`From<OsString>` types][std::convert::From] and [`From<&OsStr>` types][std::convert::From]
-/// - [`From<String>` types][std::convert::From] and [`From<&str>` types][std::convert::From]
-/// - [`FromStr` types][std::str::FromStr], including usize, isize
-///
-/// # Example
-///
-/// Usage:
-/// ```rust
-/// # use std::path::PathBuf;
-/// # use std::path::Path;
-/// let mut cmd = clap::Command::new("raw")
-/// .arg(
-/// clap::Arg::new("output")
-/// .value_parser(clap::value_parser!(PathBuf))
-/// .required(true)
-/// );
-///
-/// let m = cmd.try_get_matches_from_mut(["cmd", "file.txt"]).unwrap();
-/// let port: &PathBuf = m.get_one("output")
-/// .expect("required");
-/// assert_eq!(port, Path::new("file.txt"));
-/// ```
-///
-/// Example mappings:
-/// ```rust
-/// # use clap::ColorChoice;
-/// // Built-in types
-/// let parser = clap::value_parser!(String);
-/// assert_eq!(format!("{:?}", parser), "ValueParser::string");
-/// let parser = clap::value_parser!(std::ffi::OsString);
-/// assert_eq!(format!("{:?}", parser), "ValueParser::os_string");
-/// let parser = clap::value_parser!(std::path::PathBuf);
-/// assert_eq!(format!("{:?}", parser), "ValueParser::path_buf");
-/// clap::value_parser!(u16).range(3000..);
-/// clap::value_parser!(u64).range(3000..);
-///
-/// // FromStr types
-/// let parser = clap::value_parser!(usize);
-/// assert_eq!(format!("{:?}", parser), "_AnonymousValueParser(ValueParser::other(usize))");
-///
-/// // ValueEnum types
-/// clap::value_parser!(ColorChoice);
-/// ```
-#[macro_export]
-macro_rules! value_parser {
- ($name:ty) => {{
- use $crate::builder::via_prelude::*;
- let auto = $crate::builder::_AutoValueParser::<$name>::new();
- (&&&&&&auto).value_parser()
- }};
-}
-
-mod private {
- use super::*;
-
- // Prefer these so `clap_derive` defaults to optimized implementations
- pub trait _ValueParserViaSelfSealed {}
- impl<P: Into<ValueParser>> _ValueParserViaSelfSealed for &&&&&&&_AutoValueParser<P> {}
-
- pub trait _ValueParserViaFactorySealed {}
- impl<P: ValueParserFactory> _ValueParserViaFactorySealed for &&&&&&_AutoValueParser<P> {}
-
- pub trait _ValueParserViaValueEnumSealed {}
- impl<E: crate::ValueEnum> _ValueParserViaValueEnumSealed for &&&&&_AutoValueParser<E> {}
-
- pub trait _ValueParserViaFromOsStringSealed {}
- impl<FromOsString> _ValueParserViaFromOsStringSealed for &&&&_AutoValueParser<FromOsString> where
- FromOsString: From<std::ffi::OsString> + std::any::Any + Send + Sync + 'static
- {
- }
-
- pub trait _ValueParserViaFromOsStrSealed {}
- impl<FromOsStr> _ValueParserViaFromOsStrSealed for &&&_AutoValueParser<FromOsStr> where
- FromOsStr: for<'s> From<&'s std::ffi::OsStr> + std::any::Any + Send + Sync + 'static
- {
- }
-
- pub trait _ValueParserViaFromStringSealed {}
- impl<FromString> _ValueParserViaFromStringSealed for &&_AutoValueParser<FromString> where
- FromString: From<String> + std::any::Any + Send + Sync + 'static
- {
- }
-
- pub trait _ValueParserViaFromStrSealed {}
- impl<FromStr> _ValueParserViaFromStrSealed for &_AutoValueParser<FromStr> where
- FromStr: for<'s> From<&'s str> + std::any::Any + Send + Sync + 'static
- {
- }
-
- pub trait _ValueParserViaParseSealed {}
- impl<Parse> _ValueParserViaParseSealed for _AutoValueParser<Parse>
- where
- Parse: std::str::FromStr + std::any::Any + Send + Sync + 'static,
- <Parse as std::str::FromStr>::Err: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
- {
- }
-}
-
-#[cfg(test)]
-mod test {
- use super::*;
-
- #[test]
- fn ensure_typed_applies_to_parse() {
- fn parse(_: &str) -> Result<usize, std::io::Error> {
- Ok(10)
- }
- let cmd = crate::Command::new("cmd");
- let arg = None;
- assert_eq!(
- TypedValueParser::parse_ref(&parse, &cmd, arg, std::ffi::OsStr::new("foo")).unwrap(),
- 10
- );
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-10 16:29:43 +0000