diff options
Diffstat (limited to 'vendor/clap-3.2.20/examples/derive_ref')
7 files changed, 545 insertions, 0 deletions
diff --git a/vendor/clap-3.2.20/examples/derive_ref/augment_args.rs b/vendor/clap-3.2.20/examples/derive_ref/augment_args.rs new file mode 100644 index 000000000..310556914 --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/augment_args.rs @@ -0,0 +1,27 @@ +use clap::{arg, Args, Command, FromArgMatches as _}; + +#[derive(Args, Debug)] +struct DerivedArgs { + #[clap(short, long, action)] + derived: bool, +} + +fn main() { + let cli = Command::new("CLI").arg(arg!(-b - -built).action(clap::ArgAction::SetTrue)); + // Augment built args with derived args + let cli = DerivedArgs::augment_args(cli); + + let matches = cli.get_matches(); + println!("Value of built: {:?}", matches.get_flag("built")); + println!( + "Value of derived via ArgMatches: {:?}", + matches.get_flag("derived") + ); + + // Since DerivedArgs implements FromArgMatches, we can extract it from the unstructured ArgMatches. + // This is the main benefit of using derived arguments. + let derived_matches = DerivedArgs::from_arg_matches(&matches) + .map_err(|err| err.exit()) + .unwrap(); + println!("Value of derived: {:#?}", derived_matches); +} diff --git a/vendor/clap-3.2.20/examples/derive_ref/augment_subcommands.rs b/vendor/clap-3.2.20/examples/derive_ref/augment_subcommands.rs new file mode 100644 index 000000000..199da98b4 --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/augment_subcommands.rs @@ -0,0 +1,21 @@ +use clap::{Command, FromArgMatches as _, Parser, Subcommand as _}; + +#[derive(Parser, Debug)] +enum Subcommands { + Derived { + #[clap(short, long, action)] + derived_flag: bool, + }, +} + +fn main() { + let cli = Command::new("Built CLI"); + // Augment with derived subcommands + let cli = Subcommands::augment_subcommands(cli); + + let matches = cli.get_matches(); + let derived_subcommands = Subcommands::from_arg_matches(&matches) + .map_err(|err| err.exit()) + .unwrap(); + println!("Derived subcommands: {:#?}", derived_subcommands); +} diff --git a/vendor/clap-3.2.20/examples/derive_ref/custom-bool.md b/vendor/clap-3.2.20/examples/derive_ref/custom-bool.md new file mode 100644 index 000000000..619f9ba8e --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/custom-bool.md @@ -0,0 +1,47 @@ +*Jump to [source](custom-bool.rs)* + +Example of overriding the magic `bool` behavior + +```console +$ custom-bool --help +clap [..] +A simple to use, efficient, and full-featured Command Line Argument Parser + +USAGE: + custom-bool[EXE] [OPTIONS] --foo <FOO> <BOOM> + +ARGS: + <BOOM> [possible values: true, false] + +OPTIONS: + --bar <BAR> [default: false] + --foo <FOO> [possible values: true, false] + -h, --help Print help information + -V, --version Print version information + +$ custom-bool +? failed +error: The following required arguments were not provided: + --foo <FOO> + <BOOM> + +USAGE: + custom-bool[EXE] [OPTIONS] --foo <FOO> <BOOM> + +For more information try --help + +$ custom-bool --foo true false +[examples/derive_ref/custom-bool.rs:31] opt = Opt { + foo: true, + bar: false, + boom: false, +} + +$ custom-bool --foo true --bar true false +[examples/derive_ref/custom-bool.rs:31] opt = Opt { + foo: true, + bar: true, + boom: false, +} + +``` diff --git a/vendor/clap-3.2.20/examples/derive_ref/custom-bool.rs b/vendor/clap-3.2.20/examples/derive_ref/custom-bool.rs new file mode 100644 index 000000000..d3c321e72 --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/custom-bool.rs @@ -0,0 +1,32 @@ +use clap::Parser; + +#[derive(Parser, Debug, PartialEq)] +#[clap(author, version, about, long_about = None)] +struct Opt { + // Default parser for `Set` is FromStr::from_str. + // `impl FromStr for bool` parses `true` or `false` so this + // works as expected. + #[clap(long, action = clap::ArgAction::Set)] + foo: bool, + + // Of course, this could be done with an explicit parser function. + #[clap(long, action = clap::ArgAction::Set, value_parser = true_or_false, default_value_t)] + bar: bool, + + // `bool` can be positional only with explicit `action` annotation + #[clap(action = clap::ArgAction::Set)] + boom: bool, +} + +fn true_or_false(s: &str) -> Result<bool, &'static str> { + match s { + "true" => Ok(true), + "false" => Ok(false), + _ => Err("expected `true` or `false`"), + } +} + +fn main() { + let opt = Opt::parse(); + dbg!(opt); +} diff --git a/vendor/clap-3.2.20/examples/derive_ref/flatten_hand_args.rs b/vendor/clap-3.2.20/examples/derive_ref/flatten_hand_args.rs new file mode 100644 index 000000000..c10e0b29f --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/flatten_hand_args.rs @@ -0,0 +1,81 @@ +use clap::error::Error; +use clap::{Arg, ArgAction, ArgMatches, Args, Command, FromArgMatches, Parser}; + +#[derive(Debug)] +struct CliArgs { + foo: bool, + bar: bool, + quuz: Option<String>, +} + +impl FromArgMatches for CliArgs { + fn from_arg_matches(matches: &ArgMatches) -> Result<Self, Error> { + let mut matches = matches.clone(); + Self::from_arg_matches_mut(&mut matches) + } + fn from_arg_matches_mut(matches: &mut ArgMatches) -> Result<Self, Error> { + Ok(Self { + foo: matches.get_flag("foo"), + bar: matches.get_flag("bar"), + quuz: matches.remove_one::<String>("quuz"), + }) + } + fn update_from_arg_matches(&mut self, matches: &ArgMatches) -> Result<(), Error> { + let mut matches = matches.clone(); + self.update_from_arg_matches_mut(&mut matches) + } + fn update_from_arg_matches_mut(&mut self, matches: &mut ArgMatches) -> Result<(), Error> { + self.foo |= matches.get_flag("foo"); + self.bar |= matches.get_flag("bar"); + if let Some(quuz) = matches.remove_one::<String>("quuz") { + self.quuz = Some(quuz); + } + Ok(()) + } +} + +impl Args for CliArgs { + fn augment_args(cmd: Command<'_>) -> Command<'_> { + cmd.arg( + Arg::new("foo") + .short('f') + .long("foo") + .action(ArgAction::SetTrue), + ) + .arg( + Arg::new("bar") + .short('b') + .long("bar") + .action(ArgAction::SetTrue), + ) + .arg(Arg::new("quuz").short('q').long("quuz").takes_value(true)) + } + fn augment_args_for_update(cmd: Command<'_>) -> Command<'_> { + cmd.arg( + Arg::new("foo") + .short('f') + .long("foo") + .action(ArgAction::SetTrue), + ) + .arg( + Arg::new("bar") + .short('b') + .long("bar") + .action(ArgAction::SetTrue), + ) + .arg(Arg::new("quuz").short('q').long("quuz").takes_value(true)) + } +} + +#[derive(Parser, Debug)] +struct Cli { + #[clap(short, long, action)] + top_level: bool, + #[clap(flatten)] + more_args: CliArgs, +} + +fn main() { + let args = Cli::parse(); + println!("{:#?}", args); +} diff --git a/vendor/clap-3.2.20/examples/derive_ref/hand_subcommand.rs b/vendor/clap-3.2.20/examples/derive_ref/hand_subcommand.rs new file mode 100644 index 000000000..e9423bdc0 --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/hand_subcommand.rs @@ -0,0 +1,81 @@ +use clap::error::{Error, ErrorKind}; +use clap::{ArgMatches, Args as _, Command, FromArgMatches, Parser, Subcommand}; + +#[derive(Parser, Debug)] +struct AddArgs { + #[clap(value_parser)] + name: Vec<String>, +} +#[derive(Parser, Debug)] +struct RemoveArgs { + #[clap(short, long, action)] + force: bool, + #[clap(value_parser)] + name: Vec<String>, +} + +#[derive(Debug)] +enum CliSub { + Add(AddArgs), + Remove(RemoveArgs), +} + +impl FromArgMatches for CliSub { + fn from_arg_matches(matches: &ArgMatches) -> Result<Self, Error> { + match matches.subcommand() { + Some(("add", args)) => Ok(Self::Add(AddArgs::from_arg_matches(args)?)), + Some(("remove", args)) => Ok(Self::Remove(RemoveArgs::from_arg_matches(args)?)), + Some((_, _)) => Err(Error::raw( + ErrorKind::UnrecognizedSubcommand, + "Valid subcommands are `add` and `remove`", + )), + None => Err(Error::raw( + ErrorKind::MissingSubcommand, + "Valid subcommands are `add` and `remove`", + )), + } + } + fn update_from_arg_matches(&mut self, matches: &ArgMatches) -> Result<(), Error> { + match matches.subcommand() { + Some(("add", args)) => *self = Self::Add(AddArgs::from_arg_matches(args)?), + Some(("remove", args)) => *self = Self::Remove(RemoveArgs::from_arg_matches(args)?), + Some((_, _)) => { + return Err(Error::raw( + ErrorKind::UnrecognizedSubcommand, + "Valid subcommands are `add` and `remove`", + )) + } + None => (), + }; + Ok(()) + } +} + +impl Subcommand for CliSub { + fn augment_subcommands(cmd: Command<'_>) -> Command<'_> { + cmd.subcommand(AddArgs::augment_args(Command::new("add"))) + .subcommand(RemoveArgs::augment_args(Command::new("remove"))) + .subcommand_required(true) + } + fn augment_subcommands_for_update(cmd: Command<'_>) -> Command<'_> { + cmd.subcommand(AddArgs::augment_args(Command::new("add"))) + .subcommand(RemoveArgs::augment_args(Command::new("remove"))) + .subcommand_required(true) + } + fn has_subcommand(name: &str) -> bool { + matches!(name, "add" | "remove") + } +} + +#[derive(Parser, Debug)] +struct Cli { + #[clap(short, long, action)] + top_level: bool, + #[clap(subcommand)] + subcommand: CliSub, +} + +fn main() { + let args = Cli::parse(); + println!("{:#?}", args); +} diff --git a/vendor/clap-3.2.20/examples/derive_ref/interop_tests.md b/vendor/clap-3.2.20/examples/derive_ref/interop_tests.md new file mode 100644 index 000000000..746fe1878 --- /dev/null +++ b/vendor/clap-3.2.20/examples/derive_ref/interop_tests.md @@ -0,0 +1,256 @@ +Following are tests for the interop examples in this directory. + +## Augment Args + +```console +$ interop_augment_args +Value of built: false +Value of derived via ArgMatches: false +Value of derived: DerivedArgs { + derived: false, +} + +``` + +```console +$ interop_augment_args -b --derived +Value of built: true +Value of derived via ArgMatches: true +Value of derived: DerivedArgs { + derived: true, +} + +``` + +```console +$ interop_augment_args -d --built +Value of built: true +Value of derived via ArgMatches: true +Value of derived: DerivedArgs { + derived: true, +} + +``` + +```console +$ interop_augment_args --unknown +? failed +error: Found argument '--unknown' which wasn't expected, or isn't valid in this context + + If you tried to supply `--unknown` as a value rather than a flag, use `-- --unknown` + +USAGE: + interop_augment_args[EXE] [OPTIONS] + +For more information try --help + +``` + +## Augment Subcommands + +```console +$ interop_augment_subcommands +? failed +error: A subcommand is required but one was not provided. +``` + +```console +$ interop_augment_subcommands derived +Derived subcommands: Derived { + derived_flag: false, +} + +``` + +```console +$ interop_augment_subcommands derived --derived-flag +Derived subcommands: Derived { + derived_flag: true, +} + +``` + +```console +$ interop_augment_subcommands derived --unknown +? failed +error: Found argument '--unknown' which wasn't expected, or isn't valid in this context + + If you tried to supply `--unknown` as a value rather than a flag, use `-- --unknown` + +USAGE: + interop_augment_subcommands[EXE] derived [OPTIONS] + +For more information try --help + +``` + +```console +$ interop_augment_subcommands unknown +? failed +error: Found argument 'unknown' which wasn't expected, or isn't valid in this context + +USAGE: + interop_augment_subcommands[EXE] [SUBCOMMAND] + +For more information try --help + +``` + +## Hand-Implemented Subcommand + +```console +$ interop_hand_subcommand +? failed +error: 'interop_hand_subcommand[EXE]' requires a subcommand but one was not provided + +USAGE: + interop_hand_subcommand[EXE] [OPTIONS] <SUBCOMMAND> + +For more information try --help + +``` + +```console +$ interop_hand_subcommand add +Cli { + top_level: false, + subcommand: Add( + AddArgs { + name: [], + }, + ), +} + +``` + +```console +$ interop_hand_subcommand add a b c +Cli { + top_level: false, + subcommand: Add( + AddArgs { + name: [ + "a", + "b", + "c", + ], + }, + ), +} + +``` + +```console +$ interop_hand_subcommand add --unknown +? failed +error: Found argument '--unknown' which wasn't expected, or isn't valid in this context + + If you tried to supply `--unknown` as a value rather than a flag, use `-- --unknown` + +USAGE: + interop_hand_subcommand[EXE] add [NAME]... + +For more information try --help + +``` + +```console +$ interop_hand_subcommand remove +Cli { + top_level: false, + subcommand: Remove( + RemoveArgs { + force: false, + name: [], + }, + ), +} + +``` + +```console +$ interop_hand_subcommand remove --force a b c +Cli { + top_level: false, + subcommand: Remove( + RemoveArgs { + force: true, + name: [ + "a", + "b", + "c", + ], + }, + ), +} + +``` + +```console +$ interop_hand_subcommand unknown +? failed +error: Found argument 'unknown' which wasn't expected, or isn't valid in this context + +USAGE: + interop_hand_subcommand[EXE] [OPTIONS] <SUBCOMMAND> + +For more information try --help + +``` + +## Flatten Hand-Implemented Args + +```console +$ interop_flatten_hand_args +Cli { + top_level: false, + more_args: CliArgs { + foo: false, + bar: false, + quuz: None, + }, +} + +``` + +```console +$ interop_flatten_hand_args -f --bar +Cli { + top_level: false, + more_args: CliArgs { + foo: true, + bar: true, + quuz: None, + }, +} + +``` + +```console +$ interop_flatten_hand_args --quuz abc +Cli { + top_level: false, + more_args: CliArgs { + foo: false, + bar: false, + quuz: Some( + "abc", + ), + }, +} + +``` + +```console +$ interop_flatten_hand_args --unknown +? failed +error: Found argument '--unknown' which wasn't expected, or isn't valid in this context + + If you tried to supply `--unknown` as a value rather than a flag, use `-- --unknown` + +USAGE: + interop_flatten_hand_args[EXE] [OPTIONS] + +For more information try --help + +``` |