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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/clap_lex
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/clap_lex')
-rw-r--r--third_party/rust/clap_lex/.cargo-checksum.json1
-rw-r--r--third_party/rust/clap_lex/Cargo.toml87
-rw-r--r--third_party/rust/clap_lex/LICENSE-APACHE201
-rw-r--r--third_party/rust/clap_lex/LICENSE-MIT21
-rw-r--r--third_party/rust/clap_lex/README.md19
-rw-r--r--third_party/rust/clap_lex/src/lib.rs484
6 files changed, 813 insertions, 0 deletions
diff --git a/third_party/rust/clap_lex/.cargo-checksum.json b/third_party/rust/clap_lex/.cargo-checksum.json
new file mode 100644
index 0000000000..4453c3b82e
--- /dev/null
+++ b/third_party/rust/clap_lex/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"28209fae40afbfad8cf97237f6b6c480b8842f59e78255775303af2bcc44f544","LICENSE-APACHE":"c71d239df91726fc519c6eb72d318ec65820627232b2f796219e87dcf35d0ab4","LICENSE-MIT":"0d687e1f07b58fe68bda74668ff6326125e5e5efa184cce755cd84ac535b7058","README.md":"7522c748cde98c28950cab79471109c8bc7bb5c121eb63bd28a2769559e4b77a","src/lib.rs":"d78b54dc0fe6bd1a3a0ae764d31616a83b1a3b596ec75ad8f182c119c8c30b74"},"package":"2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"} \ No newline at end of file
diff --git a/third_party/rust/clap_lex/Cargo.toml b/third_party/rust/clap_lex/Cargo.toml
new file mode 100644
index 0000000000..ef51210818
--- /dev/null
+++ b/third_party/rust/clap_lex/Cargo.toml
@@ -0,0 +1,87 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+rust-version = "1.56.1"
+name = "clap_lex"
+version = "0.2.4"
+include = [
+ "build.rs",
+ "src/**/*",
+ "Cargo.toml",
+ "LICENSE*",
+ "README.md",
+ "benches/**/*",
+ "examples/**/*",
+]
+description = "Minimal, flexible command line parser"
+keywords = [
+ "argument",
+ "cli",
+ "arg",
+ "parser",
+ "parse",
+]
+categories = ["command-line-interface"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/clap-rs/clap/tree/master/clap_lex"
+resolver = "2"
+
+[[package.metadata.release.pre-release-replacements]]
+file = "CHANGELOG.md"
+search = "Unreleased"
+replace = "{{version}}"
+min = 1
+
+[[package.metadata.release.pre-release-replacements]]
+file = "CHANGELOG.md"
+search = '\.\.\.HEAD'
+replace = "...{{tag_name}}"
+exactly = 1
+
+[[package.metadata.release.pre-release-replacements]]
+file = "CHANGELOG.md"
+search = "ReleaseDate"
+replace = "{{date}}"
+min = 1
+
+[[package.metadata.release.pre-release-replacements]]
+file = "CHANGELOG.md"
+search = "<!-- next-header -->"
+replace = """
+<!-- next-header -->
+## [Unreleased] - ReleaseDate
+"""
+exactly = 1
+
+[[package.metadata.release.pre-release-replacements]]
+file = "CHANGELOG.md"
+search = "<!-- next-url -->"
+replace = """
+<!-- next-url -->
+[Unreleased]: https://github.com/clap-rs/clap/compare/{{tag_name}}...HEAD"""
+exactly = 1
+
+[[package.metadata.release.pre-release-replacements]]
+file = "README.md"
+search = "github.com/clap-rs/clap/blob/[^/]+/"
+replace = "github.com/clap-rs/clap/blob/{{tag_name}}/"
+exactly = 4
+prerelease = true
+
+[lib]
+bench = false
+
+[dependencies.os_str_bytes]
+version = "6.0"
+features = ["raw_os_str"]
+default-features = false
diff --git a/third_party/rust/clap_lex/LICENSE-APACHE b/third_party/rust/clap_lex/LICENSE-APACHE
new file mode 100644
index 0000000000..261eeb9e9f
--- /dev/null
+++ b/third_party/rust/clap_lex/LICENSE-APACHE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
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diff --git a/third_party/rust/clap_lex/LICENSE-MIT b/third_party/rust/clap_lex/LICENSE-MIT
new file mode 100644
index 0000000000..7b05b8453e
--- /dev/null
+++ b/third_party/rust/clap_lex/LICENSE-MIT
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-2022 Kevin B. Knapp and Clap Contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/third_party/rust/clap_lex/README.md b/third_party/rust/clap_lex/README.md
new file mode 100644
index 0000000000..887b953759
--- /dev/null
+++ b/third_party/rust/clap_lex/README.md
@@ -0,0 +1,19 @@
+<!-- omit in TOC -->
+# clap_lex
+
+> **Minimal, flexible command line parser**
+
+[![Crates.io](https://img.shields.io/crates/v/clap_lex?style=flat-square)](https://crates.io/crates/clap_lex)
+[![Crates.io](https://img.shields.io/crates/d/clap_lex?style=flat-square)](https://crates.io/crates/clap_lex)
+[![License](https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.2.4/LICENSE-APACHE)
+[![License](https://img.shields.io/badge/license-MIT-blue?style=flat-square)](https://github.com/clap-rs/clap/blob/clap_lex-v0.2.4/LICENSE-MIT)
+
+Dual-licensed under [Apache 2.0](LICENSE-APACHE) or [MIT](LICENSE-MIT).
+
+1. [About](#about)
+2. [API Reference](https://docs.rs/clap_lex)
+3. [Questions & Discussions](https://github.com/clap-rs/clap/discussions)
+4. [CONTRIBUTING](https://github.com/clap-rs/clap/blob/clap_lex-v0.2.4/clap_lex/CONTRIBUTING.md)
+5. [Sponsors](https://github.com/clap-rs/clap/blob/clap_lex-v0.2.4/README.md#sponsors)
+
+## About
diff --git a/third_party/rust/clap_lex/src/lib.rs b/third_party/rust/clap_lex/src/lib.rs
new file mode 100644
index 0000000000..f205c3de01
--- /dev/null
+++ b/third_party/rust/clap_lex/src/lib.rs
@@ -0,0 +1,484 @@
+//! Minimal, flexible command-line parser
+//!
+//! As opposed to a declarative parser, this processes arguments as a stream of tokens. As lexing
+//! a command-line is not context-free, we rely on the caller to decide how to interpret the
+//! arguments.
+//!
+//! # Examples
+//!
+//! ```rust
+//! # use std::path::PathBuf;
+//! # type BoxedError = Box<dyn std::error::Error + Send + Sync>;
+//! #[derive(Debug)]
+//! struct Args {
+//! paths: Vec<PathBuf>,
+//! color: Color,
+//! verbosity: usize,
+//! }
+//!
+//! #[derive(Debug)]
+//! enum Color {
+//! Always,
+//! Auto,
+//! Never,
+//! }
+//!
+//! impl Color {
+//! fn parse(s: Option<&clap_lex::RawOsStr>) -> Result<Self, BoxedError> {
+//! let s = s.map(|s| s.to_str().ok_or(s));
+//! match s {
+//! Some(Ok("always")) | Some(Ok("")) | None => {
+//! Ok(Color::Always)
+//! }
+//! Some(Ok("auto")) => {
+//! Ok(Color::Auto)
+//! }
+//! Some(Ok("never")) => {
+//! Ok(Color::Never)
+//! }
+//! Some(invalid) => {
+//! Err(format!("Invalid value for `--color`, {:?}", invalid).into())
+//! }
+//! }
+//! }
+//! }
+//!
+//! fn parse_args(
+//! raw: impl IntoIterator<Item=impl Into<std::ffi::OsString>>
+//! ) -> Result<Args, BoxedError> {
+//! let mut args = Args {
+//! paths: Vec::new(),
+//! color: Color::Auto,
+//! verbosity: 0,
+//! };
+//!
+//! let raw = clap_lex::RawArgs::new(raw);
+//! let mut cursor = raw.cursor();
+//! raw.next(&mut cursor); // Skip the bin
+//! while let Some(arg) = raw.next(&mut cursor) {
+//! if arg.is_escape() {
+//! args.paths.extend(raw.remaining(&mut cursor).map(PathBuf::from));
+//! } else if arg.is_stdio() {
+//! args.paths.push(PathBuf::from("-"));
+//! } else if let Some((long, value)) = arg.to_long() {
+//! match long {
+//! Ok("verbose") => {
+//! if let Some(value) = value {
+//! return Err(format!("`--verbose` does not take a value, got `{:?}`", value).into());
+//! }
+//! args.verbosity += 1;
+//! }
+//! Ok("color") => {
+//! args.color = Color::parse(value)?;
+//! }
+//! _ => {
+//! return Err(
+//! format!("Unexpected flag: --{}", arg.display()).into()
+//! );
+//! }
+//! }
+//! } else if let Some(mut shorts) = arg.to_short() {
+//! while let Some(short) = shorts.next_flag() {
+//! match short {
+//! Ok('v') => {
+//! args.verbosity += 1;
+//! }
+//! Ok('c') => {
+//! let value = shorts.next_value_os();
+//! args.color = Color::parse(value)?;
+//! }
+//! Ok(c) => {
+//! return Err(format!("Unexpected flag: -{}", c).into());
+//! }
+//! Err(e) => {
+//! return Err(format!("Unexpected flag: -{}", e.to_str_lossy()).into());
+//! }
+//! }
+//! }
+//! } else {
+//! args.paths.push(PathBuf::from(arg.to_value_os().to_os_str().into_owned()));
+//! }
+//! }
+//!
+//! Ok(args)
+//! }
+//!
+//! let args = parse_args(["bin", "--hello", "world"]);
+//! println!("{:?}", args);
+//! ```
+
+use std::ffi::OsStr;
+use std::ffi::OsString;
+
+pub use std::io::SeekFrom;
+
+pub use os_str_bytes::RawOsStr;
+pub use os_str_bytes::RawOsString;
+
+/// Command-line arguments
+#[derive(Default, Clone, Debug, PartialEq, Eq)]
+pub struct RawArgs {
+ items: Vec<OsString>,
+}
+
+impl RawArgs {
+ //// Create an argument list to parse
+ ///
+ /// **NOTE:** The argument returned will be the current binary.
+ ///
+ /// # Example
+ ///
+ /// ```rust,no_run
+ /// # use std::path::PathBuf;
+ /// let raw = clap_lex::RawArgs::from_args();
+ /// let mut cursor = raw.cursor();
+ /// let _bin = raw.next_os(&mut cursor);
+ ///
+ /// let mut paths = raw.remaining(&mut cursor).map(PathBuf::from).collect::<Vec<_>>();
+ /// println!("{:?}", paths);
+ /// ```
+ pub fn from_args() -> Self {
+ Self::new(std::env::args_os())
+ }
+
+ //// Create an argument list to parse
+ ///
+ /// # Example
+ ///
+ /// ```rust,no_run
+ /// # use std::path::PathBuf;
+ /// let raw = clap_lex::RawArgs::new(["bin", "foo.txt"]);
+ /// let mut cursor = raw.cursor();
+ /// let _bin = raw.next_os(&mut cursor);
+ ///
+ /// let mut paths = raw.remaining(&mut cursor).map(PathBuf::from).collect::<Vec<_>>();
+ /// println!("{:?}", paths);
+ /// ```
+ pub fn new(iter: impl IntoIterator<Item = impl Into<std::ffi::OsString>>) -> Self {
+ let iter = iter.into_iter();
+ Self::from(iter)
+ }
+
+ /// Create a cursor for walking the arguments
+ ///
+ /// # Example
+ ///
+ /// ```rust,no_run
+ /// # use std::path::PathBuf;
+ /// let raw = clap_lex::RawArgs::new(["bin", "foo.txt"]);
+ /// let mut cursor = raw.cursor();
+ /// let _bin = raw.next_os(&mut cursor);
+ ///
+ /// let mut paths = raw.remaining(&mut cursor).map(PathBuf::from).collect::<Vec<_>>();
+ /// println!("{:?}", paths);
+ /// ```
+ pub fn cursor(&self) -> ArgCursor {
+ ArgCursor::new()
+ }
+
+ /// Advance the cursor, returning the next [`ParsedArg`]
+ pub fn next(&self, cursor: &mut ArgCursor) -> Option<ParsedArg<'_>> {
+ self.next_os(cursor).map(ParsedArg::new)
+ }
+
+ /// Advance the cursor, returning a raw argument value.
+ pub fn next_os(&self, cursor: &mut ArgCursor) -> Option<&OsStr> {
+ let next = self.items.get(cursor.cursor).map(|s| s.as_os_str());
+ cursor.cursor = cursor.cursor.saturating_add(1);
+ next
+ }
+
+ /// Return the next [`ParsedArg`]
+ pub fn peek(&self, cursor: &ArgCursor) -> Option<ParsedArg<'_>> {
+ self.peek_os(cursor).map(ParsedArg::new)
+ }
+
+ /// Return a raw argument value.
+ pub fn peek_os(&self, cursor: &ArgCursor) -> Option<&OsStr> {
+ self.items.get(cursor.cursor).map(|s| s.as_os_str())
+ }
+
+ /// Return all remaining raw arguments, advancing the cursor to the end
+ ///
+ /// # Example
+ ///
+ /// ```rust,no_run
+ /// # use std::path::PathBuf;
+ /// let raw = clap_lex::RawArgs::new(["bin", "foo.txt"]);
+ /// let mut cursor = raw.cursor();
+ /// let _bin = raw.next_os(&mut cursor);
+ ///
+ /// let mut paths = raw.remaining(&mut cursor).map(PathBuf::from).collect::<Vec<_>>();
+ /// println!("{:?}", paths);
+ /// ```
+ pub fn remaining(&self, cursor: &mut ArgCursor) -> impl Iterator<Item = &OsStr> {
+ let remaining = self.items[cursor.cursor..].iter().map(|s| s.as_os_str());
+ cursor.cursor = self.items.len();
+ remaining
+ }
+
+ /// Adjust the cursor's position
+ pub fn seek(&self, cursor: &mut ArgCursor, pos: SeekFrom) {
+ let pos = match pos {
+ SeekFrom::Start(pos) => pos,
+ SeekFrom::End(pos) => (self.items.len() as i64).saturating_add(pos).max(0) as u64,
+ SeekFrom::Current(pos) => (cursor.cursor as i64).saturating_add(pos).max(0) as u64,
+ };
+ let pos = (pos as usize).min(self.items.len());
+ cursor.cursor = pos;
+ }
+
+ /// Inject arguments before the [`RawArgs::next`]
+ pub fn insert(&mut self, cursor: &ArgCursor, insert_items: &[&str]) {
+ self.items.splice(
+ cursor.cursor..cursor.cursor,
+ insert_items.iter().map(OsString::from),
+ );
+ }
+
+ /// Any remaining args?
+ pub fn is_end(&self, cursor: &ArgCursor) -> bool {
+ self.peek_os(cursor).is_none()
+ }
+}
+
+impl<I, T> From<I> for RawArgs
+where
+ I: Iterator<Item = T>,
+ T: Into<OsString>,
+{
+ fn from(val: I) -> Self {
+ Self {
+ items: val.map(|x| x.into()).collect(),
+ }
+ }
+}
+
+/// Position within [`RawArgs`]
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub struct ArgCursor {
+ cursor: usize,
+}
+
+impl ArgCursor {
+ fn new() -> Self {
+ Self { cursor: 0 }
+ }
+}
+
+/// Command-line Argument
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct ParsedArg<'s> {
+ inner: std::borrow::Cow<'s, RawOsStr>,
+ utf8: Option<&'s str>,
+}
+
+impl<'s> ParsedArg<'s> {
+ fn new(inner: &'s OsStr) -> Self {
+ let utf8 = inner.to_str();
+ let inner = RawOsStr::new(inner);
+ Self { inner, utf8 }
+ }
+
+ /// Argument is length of 0
+ pub fn is_empty(&self) -> bool {
+ self.inner.as_ref().is_empty()
+ }
+
+ /// Does the argument look like a stdio argument (`-`)
+ pub fn is_stdio(&self) -> bool {
+ self.inner.as_ref() == "-"
+ }
+
+ /// Does the argument look like an argument escape (`--`)
+ pub fn is_escape(&self) -> bool {
+ self.inner.as_ref() == "--"
+ }
+
+ /// Does the argument look like a number
+ pub fn is_number(&self) -> bool {
+ self.to_value()
+ .map(|s| s.parse::<f64>().is_ok())
+ .unwrap_or_default()
+ }
+
+ /// Treat as a long-flag
+ pub fn to_long(&self) -> Option<(Result<&str, &RawOsStr>, Option<&RawOsStr>)> {
+ if let Some(raw) = self.utf8 {
+ let remainder = raw.strip_prefix("--")?;
+ if remainder.is_empty() {
+ debug_assert!(self.is_escape());
+ return None;
+ }
+
+ let (flag, value) = if let Some((p0, p1)) = remainder.split_once('=') {
+ (p0, Some(p1))
+ } else {
+ (remainder, None)
+ };
+ let flag = Ok(flag);
+ let value = value.map(RawOsStr::from_str);
+ Some((flag, value))
+ } else {
+ let raw = self.inner.as_ref();
+ let remainder = raw.strip_prefix("--")?;
+ if remainder.is_empty() {
+ debug_assert!(self.is_escape());
+ return None;
+ }
+
+ let (flag, value) = if let Some((p0, p1)) = remainder.split_once('=') {
+ (p0, Some(p1))
+ } else {
+ (remainder, None)
+ };
+ let flag = flag.to_str().ok_or(flag);
+ Some((flag, value))
+ }
+ }
+
+ /// Can treat as a long-flag
+ pub fn is_long(&self) -> bool {
+ self.inner.as_ref().starts_with("--") && !self.is_escape()
+ }
+
+ /// Treat as a short-flag
+ pub fn to_short(&self) -> Option<ShortFlags<'_>> {
+ if let Some(remainder_os) = self.inner.as_ref().strip_prefix('-') {
+ if remainder_os.starts_with('-') {
+ None
+ } else if remainder_os.is_empty() {
+ debug_assert!(self.is_stdio());
+ None
+ } else {
+ let remainder = self.utf8.map(|s| &s[1..]);
+ Some(ShortFlags::new(remainder_os, remainder))
+ }
+ } else {
+ None
+ }
+ }
+
+ /// Can treat as a short-flag
+ pub fn is_short(&self) -> bool {
+ self.inner.as_ref().starts_with('-')
+ && !self.is_stdio()
+ && !self.inner.as_ref().starts_with("--")
+ }
+
+ /// Treat as a value
+ ///
+ /// **NOTE:** May return a flag or an escape.
+ pub fn to_value_os(&self) -> &RawOsStr {
+ self.inner.as_ref()
+ }
+
+ /// Treat as a value
+ ///
+ /// **NOTE:** May return a flag or an escape.
+ pub fn to_value(&self) -> Result<&str, &RawOsStr> {
+ self.utf8.ok_or_else(|| self.inner.as_ref())
+ }
+
+ /// Safely print an argument that may contain non-UTF8 content
+ ///
+ /// This may perform lossy conversion, depending on the platform. If you would like an implementation which escapes the path please use Debug instead.
+ pub fn display(&self) -> impl std::fmt::Display + '_ {
+ self.inner.to_str_lossy()
+ }
+}
+
+/// Walk through short flags within a [`ParsedArg`]
+#[derive(Clone, Debug)]
+pub struct ShortFlags<'s> {
+ inner: &'s RawOsStr,
+ utf8_prefix: std::str::CharIndices<'s>,
+ invalid_suffix: Option<&'s RawOsStr>,
+}
+
+impl<'s> ShortFlags<'s> {
+ fn new(inner: &'s RawOsStr, utf8: Option<&'s str>) -> Self {
+ let (utf8_prefix, invalid_suffix) = if let Some(utf8) = utf8 {
+ (utf8, None)
+ } else {
+ split_nonutf8_once(inner)
+ };
+ let utf8_prefix = utf8_prefix.char_indices();
+ Self {
+ inner,
+ utf8_prefix,
+ invalid_suffix,
+ }
+ }
+
+ /// Move the iterator forward by `n` short flags
+ pub fn advance_by(&mut self, n: usize) -> Result<(), usize> {
+ for i in 0..n {
+ self.next().ok_or(i)?.map_err(|_| i)?;
+ }
+ Ok(())
+ }
+
+ /// No short flags left
+ pub fn is_empty(&self) -> bool {
+ self.invalid_suffix.is_none() && self.utf8_prefix.as_str().is_empty()
+ }
+
+ /// Does the short flag look like a number
+ ///
+ /// Ideally call this before doing any iterator
+ pub fn is_number(&self) -> bool {
+ self.invalid_suffix.is_none() && self.utf8_prefix.as_str().parse::<f64>().is_ok()
+ }
+
+ /// Advance the iterator, returning the next short flag on success
+ ///
+ /// On error, returns the invalid-UTF8 value
+ pub fn next_flag(&mut self) -> Option<Result<char, &'s RawOsStr>> {
+ if let Some((_, flag)) = self.utf8_prefix.next() {
+ return Some(Ok(flag));
+ }
+
+ if let Some(suffix) = self.invalid_suffix {
+ self.invalid_suffix = None;
+ return Some(Err(suffix));
+ }
+
+ None
+ }
+
+ /// Advance the iterator, returning everything left as a value
+ pub fn next_value_os(&mut self) -> Option<&'s RawOsStr> {
+ if let Some((index, _)) = self.utf8_prefix.next() {
+ self.utf8_prefix = "".char_indices();
+ self.invalid_suffix = None;
+ return Some(&self.inner[index..]);
+ }
+
+ if let Some(suffix) = self.invalid_suffix {
+ self.invalid_suffix = None;
+ return Some(suffix);
+ }
+
+ None
+ }
+}
+
+impl<'s> Iterator for ShortFlags<'s> {
+ type Item = Result<char, &'s RawOsStr>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.next_flag()
+ }
+}
+
+fn split_nonutf8_once(b: &RawOsStr) -> (&str, Option<&RawOsStr>) {
+ match std::str::from_utf8(b.as_raw_bytes()) {
+ Ok(s) => (s, None),
+ Err(err) => {
+ let (valid, after_valid) = b.split_at(err.valid_up_to());
+ let valid = std::str::from_utf8(valid.as_raw_bytes()).unwrap();
+ (valid, Some(after_valid))
+ }
+ }
+}