| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-2.34.0/src/errors.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>errors.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../clap/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../clap/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="933">933</span> |
| </pre><pre class="rust"><code><span class="comment">// Std |
| </span><span class="kw">use </span>std::{ |
| convert::From, |
| error::Error <span class="kw">as </span>StdError, |
| fmt <span class="kw">as </span>std_fmt, |
| fmt::Display, |
| io::{<span class="self">self</span>, Write}, |
| process, |
| result::Result <span class="kw">as </span>StdResult, |
| }; |
| |
| <span class="comment">// Internal |
| </span><span class="kw">use crate</span>::{ |
| args::AnyArg, |
| fmt::{ColorWhen, Colorizer, ColorizerOption}, |
| suggestions, |
| }; |
| |
| <span class="doccomment">/// Short hand for [`Result`] type |
| /// |
| /// [`Result`]: https://doc.rust-lang.org/std/result/enum.Result.html |
| </span><span class="kw">pub type </span><span class="prelude-ty">Result</span><T> = StdResult<T, Error>; |
| |
| <span class="doccomment">/// Command line argument parser kind of error |
| </span><span class="attribute">#[derive(Debug, Copy, Clone, PartialEq)] |
| </span><span class="kw">pub enum </span>ErrorKind { |
| <span class="doccomment">/// Occurs when an [`Arg`] has a set of possible values, |
| /// and the user provides a value which isn't in that set. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("speed") |
| /// .possible_value("fast") |
| /// .possible_value("slow")) |
| /// .get_matches_from_safe(vec!["prog", "other"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::InvalidValue); |
| /// ``` |
| /// [`Arg`]: ./struct.Arg.html |
| </span>InvalidValue, |
| |
| <span class="doccomment">/// Occurs when a user provides a flag, option, argument or subcommand which isn't defined. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::from_usage("--flag 'some flag'")) |
| /// .get_matches_from_safe(vec!["prog", "--other"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::UnknownArgument); |
| /// ``` |
| </span>UnknownArgument, |
| |
| <span class="doccomment">/// Occurs when the user provides an unrecognized [`SubCommand`] which meets the threshold for |
| /// being similar enough to an existing subcommand. |
| /// If it doesn't meet the threshold, or the 'suggestions' feature is disabled, |
| /// the more general [`UnknownArgument`] error is returned. |
| /// |
| /// # Examples |
| /// |
| </span><span class="attribute">#[cfg_attr(not(feature = <span class="string">"suggestions"</span>), doc = <span class="string">" ```no_run"</span>)] |
| #[cfg_attr(feature = <span class="string">"suggestions"</span>, doc = <span class="string">" ```"</span>)] |
| </span><span class="doccomment">/// # use clap::{App, Arg, ErrorKind, SubCommand}; |
| /// let result = App::new("prog") |
| /// .subcommand(SubCommand::with_name("config") |
| /// .about("Used for configuration") |
| /// .arg(Arg::with_name("config_file") |
| /// .help("The configuration file to use") |
| /// .index(1))) |
| /// .get_matches_from_safe(vec!["prog", "confi"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::InvalidSubcommand); |
| /// ``` |
| /// [`SubCommand`]: ./struct.SubCommand.html |
| /// [`UnknownArgument`]: ./enum.ErrorKind.html#variant.UnknownArgument |
| </span>InvalidSubcommand, |
| |
| <span class="doccomment">/// Occurs when the user provides an unrecognized [`SubCommand`] which either |
| /// doesn't meet the threshold for being similar enough to an existing subcommand, |
| /// or the 'suggestions' feature is disabled. |
| /// Otherwise the more detailed [`InvalidSubcommand`] error is returned. |
| /// |
| /// This error typically happens when passing additional subcommand names to the `help` |
| /// subcommand. Otherwise, the more general [`UnknownArgument`] error is used. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind, SubCommand}; |
| /// let result = App::new("prog") |
| /// .subcommand(SubCommand::with_name("config") |
| /// .about("Used for configuration") |
| /// .arg(Arg::with_name("config_file") |
| /// .help("The configuration file to use") |
| /// .index(1))) |
| /// .get_matches_from_safe(vec!["prog", "help", "nothing"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::UnrecognizedSubcommand); |
| /// ``` |
| /// [`SubCommand`]: ./struct.SubCommand.html |
| /// [`InvalidSubcommand`]: ./enum.ErrorKind.html#variant.InvalidSubcommand |
| /// [`UnknownArgument`]: ./enum.ErrorKind.html#variant.UnknownArgument |
| </span>UnrecognizedSubcommand, |
| |
| <span class="doccomment">/// Occurs when the user provides an empty value for an option that does not allow empty |
| /// values. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let res = App::new("prog") |
| /// .arg(Arg::with_name("color") |
| /// .long("color") |
| /// .empty_values(false)) |
| /// .get_matches_from_safe(vec!["prog", "--color="]); |
| /// assert!(res.is_err()); |
| /// assert_eq!(res.unwrap_err().kind, ErrorKind::EmptyValue); |
| /// ``` |
| </span>EmptyValue, |
| |
| <span class="doccomment">/// Occurs when the user provides a value for an argument with a custom validation and the |
| /// value fails that validation. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// fn is_numeric(val: String) -> Result<(), String> { |
| /// match val.parse::<i64>() { |
| /// Ok(..) => Ok(()), |
| /// Err(..) => Err(String::from("Value wasn't a number!")), |
| /// } |
| /// } |
| /// |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("num") |
| /// .validator(is_numeric)) |
| /// .get_matches_from_safe(vec!["prog", "NotANumber"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::ValueValidation); |
| /// ``` |
| </span>ValueValidation, |
| |
| <span class="doccomment">/// Occurs when a user provides more values for an argument than were defined by setting |
| /// [`Arg::max_values`]. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("arg") |
| /// .multiple(true) |
| /// .max_values(2)) |
| /// .get_matches_from_safe(vec!["prog", "too", "many", "values"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::TooManyValues); |
| /// ``` |
| /// [`Arg::max_values`]: ./struct.Arg.html#method.max_values |
| </span>TooManyValues, |
| |
| <span class="doccomment">/// Occurs when the user provides fewer values for an argument than were defined by setting |
| /// [`Arg::min_values`]. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("some_opt") |
| /// .long("opt") |
| /// .min_values(3)) |
| /// .get_matches_from_safe(vec!["prog", "--opt", "too", "few"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::TooFewValues); |
| /// ``` |
| /// [`Arg::min_values`]: ./struct.Arg.html#method.min_values |
| </span>TooFewValues, |
| |
| <span class="doccomment">/// Occurs when the user provides a different number of values for an argument than what's |
| /// been defined by setting [`Arg::number_of_values`] or than was implicitly set by |
| /// [`Arg::value_names`]. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("some_opt") |
| /// .long("opt") |
| /// .takes_value(true) |
| /// .number_of_values(2)) |
| /// .get_matches_from_safe(vec!["prog", "--opt", "wrong"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::WrongNumberOfValues); |
| /// ``` |
| /// |
| /// [`Arg::number_of_values`]: ./struct.Arg.html#method.number_of_values |
| /// [`Arg::value_names`]: ./struct.Arg.html#method.value_names |
| </span>WrongNumberOfValues, |
| |
| <span class="doccomment">/// Occurs when the user provides two values which conflict with each other and can't be used |
| /// together. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("debug") |
| /// .long("debug") |
| /// .conflicts_with("color")) |
| /// .arg(Arg::with_name("color") |
| /// .long("color")) |
| /// .get_matches_from_safe(vec!["prog", "--debug", "--color"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::ArgumentConflict); |
| /// ``` |
| </span>ArgumentConflict, |
| |
| <span class="doccomment">/// Occurs when the user does not provide one or more required arguments. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("debug") |
| /// .required(true)) |
| /// .get_matches_from_safe(vec!["prog"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::MissingRequiredArgument); |
| /// ``` |
| </span>MissingRequiredArgument, |
| |
| <span class="doccomment">/// Occurs when a subcommand is required (as defined by [`AppSettings::SubcommandRequired`]), |
| /// but the user does not provide one. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, AppSettings, SubCommand, ErrorKind}; |
| /// let err = App::new("prog") |
| /// .setting(AppSettings::SubcommandRequired) |
| /// .subcommand(SubCommand::with_name("test")) |
| /// .get_matches_from_safe(vec![ |
| /// "myprog", |
| /// ]); |
| /// assert!(err.is_err()); |
| /// assert_eq!(err.unwrap_err().kind, ErrorKind::MissingSubcommand); |
| /// # ; |
| /// ``` |
| /// [`AppSettings::SubcommandRequired`]: ./enum.AppSettings.html#variant.SubcommandRequired |
| </span>MissingSubcommand, |
| |
| <span class="doccomment">/// Occurs when either an argument or [`SubCommand`] is required, as defined by |
| /// [`AppSettings::ArgRequiredElseHelp`], but the user did not provide one. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, AppSettings, ErrorKind, SubCommand}; |
| /// let result = App::new("prog") |
| /// .setting(AppSettings::ArgRequiredElseHelp) |
| /// .subcommand(SubCommand::with_name("config") |
| /// .about("Used for configuration") |
| /// .arg(Arg::with_name("config_file") |
| /// .help("The configuration file to use"))) |
| /// .get_matches_from_safe(vec!["prog"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::MissingArgumentOrSubcommand); |
| /// ``` |
| /// [`SubCommand`]: ./struct.SubCommand.html |
| /// [`AppSettings::ArgRequiredElseHelp`]: ./enum.AppSettings.html#variant.ArgRequiredElseHelp |
| </span>MissingArgumentOrSubcommand, |
| |
| <span class="doccomment">/// Occurs when the user provides multiple values to an argument which doesn't allow that. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .arg(Arg::with_name("debug") |
| /// .long("debug") |
| /// .multiple(false)) |
| /// .get_matches_from_safe(vec!["prog", "--debug", "--debug"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::UnexpectedMultipleUsage); |
| /// ``` |
| </span>UnexpectedMultipleUsage, |
| |
| <span class="doccomment">/// Occurs when the user provides a value containing invalid UTF-8 for an argument and |
| /// [`AppSettings::StrictUtf8`] is set. |
| /// |
| /// # Platform Specific |
| /// |
| /// Non-Windows platforms only (such as Linux, Unix, macOS, etc.) |
| /// |
| /// # Examples |
| /// |
| </span><span class="attribute">#[cfg_attr(not(unix), doc = <span class="string">" ```ignore"</span>)] |
| #[cfg_attr(unix, doc = <span class="string">" ```"</span>)] |
| </span><span class="doccomment">/// # use clap::{App, Arg, ErrorKind, AppSettings}; |
| /// # use std::os::unix::ffi::OsStringExt; |
| /// # use std::ffi::OsString; |
| /// let result = App::new("prog") |
| /// .setting(AppSettings::StrictUtf8) |
| /// .arg(Arg::with_name("utf8") |
| /// .short("u") |
| /// .takes_value(true)) |
| /// .get_matches_from_safe(vec![OsString::from("myprog"), |
| /// OsString::from("-u"), |
| /// OsString::from_vec(vec![0xE9])]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::InvalidUtf8); |
| /// ``` |
| /// [`AppSettings::StrictUtf8`]: ./enum.AppSettings.html#variant.StrictUtf8 |
| </span>InvalidUtf8, |
| |
| <span class="doccomment">/// Not a true "error" as it means `--help` or similar was used. |
| /// The help message will be sent to `stdout`. |
| /// |
| /// **Note**: If the help is displayed due to an error (such as missing subcommands) it will |
| /// be sent to `stderr` instead of `stdout`. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .get_matches_from_safe(vec!["prog", "--help"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::HelpDisplayed); |
| /// ``` |
| </span>HelpDisplayed, |
| |
| <span class="doccomment">/// Not a true "error" as it means `--version` or similar was used. |
| /// The message will be sent to `stdout`. |
| /// |
| /// # Examples |
| /// |
| /// ```rust |
| /// # use clap::{App, Arg, ErrorKind}; |
| /// let result = App::new("prog") |
| /// .get_matches_from_safe(vec!["prog", "--version"]); |
| /// assert!(result.is_err()); |
| /// assert_eq!(result.unwrap_err().kind, ErrorKind::VersionDisplayed); |
| /// ``` |
| </span>VersionDisplayed, |
| |
| <span class="doccomment">/// Occurs when using the [`value_t!`] and [`values_t!`] macros to convert an argument value |
| /// into type `T`, but the argument you requested wasn't used. I.e. you asked for an argument |
| /// with name `config` to be converted, but `config` wasn't used by the user. |
| /// [`value_t!`]: ./macro.value_t!.html |
| /// [`values_t!`]: ./macro.values_t!.html |
| </span>ArgumentNotFound, |
| |
| <span class="doccomment">/// Represents an [I/O error]. |
| /// Can occur when writing to `stderr` or `stdout` or reading a configuration file. |
| /// [I/O error]: https://doc.rust-lang.org/std/io/struct.Error.html |
| </span>Io, |
| |
| <span class="doccomment">/// Represents a [Format error] (which is a part of [`Display`]). |
| /// Typically caused by writing to `stderr` or `stdout`. |
| /// |
| /// [`Display`]: https://doc.rust-lang.org/std/fmt/trait.Display.html |
| /// [Format error]: https://doc.rust-lang.org/std/fmt/struct.Error.html |
| </span>Format, |
| } |
| |
| <span class="doccomment">/// Command Line Argument Parser Error |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>Error { |
| <span class="doccomment">/// Formatted error message |
| </span><span class="kw">pub </span>message: String, |
| <span class="doccomment">/// The type of error |
| </span><span class="kw">pub </span>kind: ErrorKind, |
| <span class="doccomment">/// Any additional information passed along, such as the argument name that caused the error |
| </span><span class="kw">pub </span>info: <span class="prelude-ty">Option</span><Vec<String>>, |
| } |
| |
| <span class="kw">impl </span>Error { |
| <span class="doccomment">/// Should the message be written to `stdout` or not |
| </span><span class="kw">pub fn </span>use_stderr(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| !<span class="macro">matches!</span>( |
| <span class="self">self</span>.kind, |
| ErrorKind::HelpDisplayed | ErrorKind::VersionDisplayed |
| ) |
| } |
| |
| <span class="doccomment">/// Prints the error message and exits. If `Error::use_stderr` evaluates to `true`, the message |
| /// will be written to `stderr` and exits with a status of `1`. Otherwise, `stdout` is used |
| /// with a status of `0`. |
| </span><span class="kw">pub fn </span>exit(<span class="kw-2">&</span><span class="self">self</span>) -> ! { |
| <span class="kw">if </span><span class="self">self</span>.use_stderr() { |
| <span class="macro">wlnerr!</span>(@nopanic <span class="string">"{}"</span>, <span class="self">self</span>.message); |
| process::exit(<span class="number">1</span>); |
| } |
| <span class="comment">// We are deliberately dropping errors here. We could match on the error kind, and only |
| // drop things such as `std::io::ErrorKind::BrokenPipe`, however nothing is being bubbled |
| // up or reported back to the caller and we will be exit'ing the process anyways. |
| // Additionally, changing this API to bubble up the result would be a breaking change. |
| // |
| // Another approach could be to try and write to stdout, if that fails due to a broken pipe |
| // then use stderr. However, that would change the semantics in what could be argued is a |
| // breaking change. Simply dropping the error, can always be changed to this "use stderr if |
| // stdout is closed" approach later if desired. |
| // |
| // A good explanation of the types of errors are SIGPIPE where the read side of the pipe |
| // closes before the write side. See the README in `calm_io` for a good explanation: |
| // |
| // https://github.com/myrrlyn/calm_io/blob/a42845575a04cd8b65e92c19d104627f5fcad3d7/README.md |
| </span><span class="kw">let _ </span>= <span class="macro">writeln!</span>(<span class="kw-2">&mut </span>io::stdout().lock(), <span class="string">"{}"</span>, <span class="self">self</span>.message); |
| process::exit(<span class="number">0</span>); |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>write_to<W: Write>(<span class="kw-2">&</span><span class="self">self</span>, w: <span class="kw-2">&mut </span>W) -> io::Result<()> { |
| <span class="macro">write!</span>(w, <span class="string">"{}"</span>, <span class="self">self</span>.message) |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>argument_conflict<O, U>( |
| arg: <span class="kw-2">&</span>AnyArg, |
| other: <span class="prelude-ty">Option</span><O>, |
| usage: U, |
| color: ColorWhen, |
| ) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>O: Into<String>, |
| U: Display, |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>v = <span class="macro">vec!</span>[arg.name().to_owned()]; |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The argument '{}' cannot be used with {}\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(<span class="kw-2">&*</span>arg.to_string()), |
| <span class="kw">match </span>other { |
| <span class="prelude-val">Some</span>(name) => { |
| <span class="kw">let </span>n = name.into(); |
| v.push(n.clone()); |
| c.warning(<span class="macro">format!</span>(<span class="string">"'{}'"</span>, n)) |
| } |
| <span class="prelude-val">None </span>=> c.none(<span class="string">"one or more of the other specified arguments"</span>.to_owned()), |
| }, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::ArgumentConflict, |
| info: <span class="prelude-val">Some</span>(v), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>empty_value<U>(arg: <span class="kw-2">&</span>AnyArg, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The argument '{}' requires a value but none was supplied\ |
| \n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(arg.to_string()), |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::EmptyValue, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>invalid_value<B, G, U>( |
| bad_val: B, |
| good_vals: <span class="kw-2">&</span>[G], |
| arg: <span class="kw-2">&</span>AnyArg, |
| usage: U, |
| color: ColorWhen, |
| ) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>B: AsRef<str>, |
| G: AsRef<str> + Display, |
| U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| <span class="kw">let </span>suffix = suggestions::did_you_mean_value_suffix(bad_val.as_ref(), good_vals.iter()); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>sorted = <span class="macro">vec!</span>[]; |
| <span class="kw">for </span>v <span class="kw">in </span>good_vals { |
| <span class="kw">let </span>val = <span class="macro">format!</span>(<span class="string">"{}"</span>, c.good(v)); |
| sorted.push(val); |
| } |
| sorted.sort(); |
| <span class="kw">let </span>valid_values = sorted.join(<span class="string">", "</span>); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} '{}' isn't a valid value for '{}'\n\t\ |
| [possible values: {}]\n\ |
| {}\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(bad_val.as_ref()), |
| c.warning(arg.to_string()), |
| valid_values, |
| suffix.<span class="number">0</span>, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::InvalidValue, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned(), bad_val.as_ref().to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>invalid_subcommand<S, D, N, U>( |
| subcmd: S, |
| did_you_mean: D, |
| name: N, |
| usage: U, |
| color: ColorWhen, |
| ) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>S: Into<String>, |
| D: AsRef<str> + Display, |
| N: Display, |
| U: Display, |
| { |
| <span class="kw">let </span>s = subcmd.into(); |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The subcommand '{}' wasn't recognized\n\t\ |
| Did you mean '{}'?\n\n\ |
| If you believe you received this message in error, try \ |
| re-running with '{} {} {}'\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(<span class="kw-2">&*</span>s), |
| c.good(did_you_mean.as_ref()), |
| name, |
| c.good(<span class="string">"--"</span>), |
| <span class="kw-2">&*</span>s, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::InvalidSubcommand, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[s]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>unrecognized_subcommand<S, N>(subcmd: S, name: N, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>S: Into<String>, |
| N: Display, |
| { |
| <span class="kw">let </span>s = subcmd.into(); |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The subcommand '{}' wasn't recognized\n\n\ |
| {}\n\t\ |
| {} help <subcommands>...\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(<span class="kw-2">&*</span>s), |
| c.warning(<span class="string">"USAGE:"</span>), |
| name, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::UnrecognizedSubcommand, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[s]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>missing_required_argument<R, U>(required: R, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>R: Display, |
| U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The following required arguments were not provided:{}\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| required, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::MissingRequiredArgument, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>missing_subcommand<N, U>(name: N, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>N: AsRef<str> + Display, |
| U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} '{}' requires a subcommand, but one was not provided\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(name), |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::MissingSubcommand, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>invalid_utf8<U>(usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} Invalid UTF-8 was detected in one or more arguments\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::InvalidUtf8, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>too_many_values<V, U>(val: V, arg: <span class="kw-2">&</span>AnyArg, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>V: AsRef<str> + Display + ToOwned, |
| U: Display, |
| { |
| <span class="kw">let </span>v = val.as_ref(); |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The value '{}' was provided to '{}', but it wasn't expecting \ |
| any more values\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(v), |
| c.warning(arg.to_string()), |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::TooManyValues, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned(), v.to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>too_few_values<U>( |
| arg: <span class="kw-2">&</span>AnyArg, |
| min_vals: u64, |
| curr_vals: usize, |
| usage: U, |
| color: ColorWhen, |
| ) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The argument '{}' requires at least {} values, but only {} w{} \ |
| provided\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(arg.to_string()), |
| c.warning(min_vals.to_string()), |
| c.warning(curr_vals.to_string()), |
| <span class="kw">if </span>curr_vals > <span class="number">1 </span>{ <span class="string">"ere" </span>} <span class="kw">else </span>{ <span class="string">"as" </span>}, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::TooFewValues, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>value_validation(arg: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>AnyArg>, err: String, color: ColorWhen) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} Invalid value{}: {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(a) = arg { |
| <span class="macro">format!</span>(<span class="string">" for '{}'"</span>, c.warning(a.to_string())) |
| } <span class="kw">else </span>{ |
| <span class="string">""</span>.to_string() |
| }, |
| err |
| ), |
| kind: ErrorKind::ValueValidation, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>value_validation_auto(err: String) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>n: <span class="prelude-ty">Option</span><<span class="kw-2">&</span>AnyArg> = <span class="prelude-val">None</span>; |
| Error::value_validation(n, err, ColorWhen::Auto) |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>wrong_number_of_values<S, U>( |
| arg: <span class="kw-2">&</span>AnyArg, |
| num_vals: u64, |
| curr_vals: usize, |
| suffix: S, |
| usage: U, |
| color: ColorWhen, |
| ) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>S: Display, |
| U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The argument '{}' requires {} values, but {} w{} \ |
| provided\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(arg.to_string()), |
| c.warning(num_vals.to_string()), |
| c.warning(curr_vals.to_string()), |
| suffix, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::WrongNumberOfValues, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>unexpected_multiple_usage<U>(arg: <span class="kw-2">&</span>AnyArg, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>U: Display, |
| { |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} The argument '{}' was provided more than once, but cannot \ |
| be used multiple times\n\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(arg.to_string()), |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::UnexpectedMultipleUsage, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[arg.name().to_owned()]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>unknown_argument<A, U>(arg: A, did_you_mean: <span class="kw-2">&</span>str, usage: U, color: ColorWhen) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>A: Into<String>, |
| U: Display, |
| { |
| <span class="kw">let </span>a = arg.into(); |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>( |
| <span class="string">"{} Found argument '{}' which wasn't expected, or isn't valid in \ |
| this context{}\n\ |
| {}\n\n\ |
| For more information try {}"</span>, |
| c.error(<span class="string">"error:"</span>), |
| c.warning(<span class="kw-2">&*</span>a), |
| <span class="kw">if </span>did_you_mean.is_empty() { |
| <span class="string">"\n"</span>.to_owned() |
| } <span class="kw">else </span>{ |
| <span class="macro">format!</span>(<span class="string">"{}\n"</span>, did_you_mean) |
| }, |
| usage, |
| c.good(<span class="string">"--help"</span>) |
| ), |
| kind: ErrorKind::UnknownArgument, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[a]), |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>io_error(e: <span class="kw-2">&</span>Error, color: ColorWhen) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: color, |
| }); |
| Error { |
| message: <span class="macro">format!</span>(<span class="string">"{} {}"</span>, c.error(<span class="string">"error:"</span>), e.description()), |
| kind: ErrorKind::Io, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>argument_not_found_auto<A>(arg: A) -> <span class="self">Self |
| </span><span class="kw">where |
| </span>A: Into<String>, |
| { |
| <span class="kw">let </span>a = arg.into(); |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: ColorWhen::Auto, |
| }); |
| Error { |
| message: <span class="macro">format!</span>(<span class="string">"{} The argument '{}' wasn't found"</span>, c.error(<span class="string">"error:"</span>), a), |
| kind: ErrorKind::ArgumentNotFound, |
| info: <span class="prelude-val">Some</span>(<span class="macro">vec!</span>[a]), |
| } |
| } |
| |
| <span class="doccomment">/// Create an error with a custom description. |
| /// |
| /// This can be used in combination with `Error::exit` to exit your program |
| /// with a custom error message. |
| </span><span class="kw">pub fn </span>with_description(description: <span class="kw-2">&</span>str, kind: ErrorKind) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>c = Colorizer::new(ColorizerOption { |
| use_stderr: <span class="bool-val">true</span>, |
| when: ColorWhen::Auto, |
| }); |
| Error { |
| message: <span class="macro">format!</span>(<span class="string">"{} {}"</span>, c.error(<span class="string">"error:"</span>), description), |
| kind, |
| info: <span class="prelude-val">None</span>, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>StdError <span class="kw">for </span>Error { |
| <span class="kw">fn </span>description(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw-2">&*</span><span class="self">self</span>.message |
| } |
| } |
| |
| <span class="kw">impl </span>Display <span class="kw">for </span>Error { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>std_fmt::Formatter) -> std_fmt::Result { |
| <span class="macro">writeln!</span>(f, <span class="string">"{}"</span>, <span class="self">self</span>.message) |
| } |
| } |
| |
| <span class="kw">impl </span>From<io::Error> <span class="kw">for </span>Error { |
| <span class="kw">fn </span>from(e: io::Error) -> <span class="self">Self </span>{ |
| Error::with_description(e.description(), ErrorKind::Io) |
| } |
| } |
| |
| <span class="kw">impl </span>From<std_fmt::Error> <span class="kw">for </span>Error { |
| <span class="kw">fn </span>from(e: std_fmt::Error) -> <span class="self">Self </span>{ |
| Error::with_description(e.description(), ErrorKind::Format) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="clap" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |