1569 lines
50 KiB
Rust
1569 lines
50 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Simple getopt alternative.
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//!
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//! Construct a vector of options, either by using `reqopt`, `optopt`, and `optflag`
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//! or by building them from components yourself, and pass them to `getopts`,
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//! along with a vector of actual arguments (not including `argv[0]`). You'll
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//! either get a failure code back, or a match. You'll have to verify whether
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//! the amount of 'free' arguments in the match is what you expect. Use `opt_*`
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//! accessors to get argument values out of the matches object.
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//!
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//! Single-character options are expected to appear on the command line with a
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//! single preceding dash; multiple-character options are expected to be
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//! proceeded by two dashes. Options that expect an argument accept their
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//! argument following either a space or an equals sign. Single-character
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//! options don't require the space.
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//!
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//! # Example
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//!
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//! The following example shows simple command line parsing for an application
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//! that requires an input file to be specified, accepts an optional output
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//! file name following `-o`, and accepts both `-h` and `--help` as optional flags.
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//!
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//! ~~~{.rust}
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//! extern crate getopts;
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//! use getopts::{optopt,optflag,getopts,OptGroup};
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//! use std::os;
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//!
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//! fn do_work(inp: &str, out: Option<String>) {
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//! println!("{}", inp);
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//! match out {
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//! Some(x) => println!("{}", x),
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//! None => println!("No Output"),
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//! }
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//! }
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//!
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//! fn print_usage(program: &str, _opts: &[OptGroup]) {
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//! println!("Usage: {} [options]", program);
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//! println!("-o\t\tOutput");
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//! println!("-h --help\tUsage");
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//! }
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//!
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//! fn main() {
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//! let args: Vec<String> = os::args();
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//!
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//! let program = args.get(0).clone();
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//!
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//! let opts = [
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//! optopt("o", "", "set output file name", "NAME"),
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//! optflag("h", "help", "print this help menu")
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//! ];
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//! let matches = match getopts(args.tail(), opts) {
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//! Ok(m) => { m }
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//! Err(f) => { fail!(f.to_string()) }
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//! };
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//! if matches.opt_present("h") {
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//! print_usage(program.as_slice(), opts);
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//! return;
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//! }
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//! let output = matches.opt_str("o");
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//! let input = if !matches.free.is_empty() {
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//! (*matches.free.get(0)).clone()
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//! } else {
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//! print_usage(program.as_slice(), opts);
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//! return;
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//! };
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//! do_work(input.as_slice(), output);
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//! }
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//! ~~~
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#![crate_id = "getopts#0.11.0"] // NOTE: remove after stage0
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#![crate_name = "getopts"]
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#![experimental]
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#![crate_type = "rlib"]
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#![crate_type = "dylib"]
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#![license = "MIT/ASL2"]
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#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
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html_favicon_url = "http://www.rust-lang.org/favicon.ico",
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html_root_url = "http://doc.rust-lang.org/0.11.0/",
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html_playground_url = "http://play.rust-lang.org/")]
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#![feature(globs, phase)]
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#![deny(missing_doc)]
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#![allow(unused_attribute)] // NOTE: remove after stage0
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#[cfg(test)] extern crate debug;
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#[cfg(test)] #[phase(plugin, link)] extern crate log;
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use std::cmp::PartialEq;
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use std::fmt;
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use std::result::{Err, Ok};
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use std::result;
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use std::string::String;
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/// Name of an option. Either a string or a single char.
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#[deriving(Clone, PartialEq, Eq)]
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pub enum Name {
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/// A string representing the long name of an option.
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/// For example: "help"
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Long(String),
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/// A char representing the short name of an option.
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/// For example: 'h'
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Short(char),
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}
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/// Describes whether an option has an argument.
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#[deriving(Clone, PartialEq, Eq)]
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pub enum HasArg {
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/// The option requires an argument.
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Yes,
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/// The option is just a flag, therefore no argument.
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No,
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/// The option argument is optional and it could or not exist.
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Maybe,
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}
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/// Describes how often an option may occur.
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#[deriving(Clone, PartialEq, Eq)]
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pub enum Occur {
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/// The option occurs once.
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Req,
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/// The option could or not occur.
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Optional,
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/// The option occurs once or multiple times.
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Multi,
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}
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/// A description of a possible option.
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#[deriving(Clone, PartialEq, Eq)]
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pub struct Opt {
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/// Name of the option
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pub name: Name,
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/// Whether it has an argument
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pub hasarg: HasArg,
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/// How often it can occur
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pub occur: Occur,
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/// Which options it aliases
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pub aliases: Vec<Opt>,
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}
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/// One group of options, e.g., both -h and --help, along with
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/// their shared description and properties.
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#[deriving(Clone, PartialEq, Eq)]
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pub struct OptGroup {
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/// Short Name of the `OptGroup`
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pub short_name: String,
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/// Long Name of the `OptGroup`
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pub long_name: String,
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/// Hint
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pub hint: String,
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/// Description
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pub desc: String,
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/// Whether it has an argument
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pub hasarg: HasArg,
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/// How often it can occur
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pub occur: Occur
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}
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/// Describes whether an option is given at all or has a value.
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#[deriving(Clone, PartialEq, Eq)]
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enum Optval {
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Val(String),
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Given,
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}
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/// The result of checking command line arguments. Contains a vector
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/// of matches and a vector of free strings.
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#[deriving(Clone, PartialEq, Eq)]
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pub struct Matches {
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/// Options that matched
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opts: Vec<Opt>,
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/// Values of the Options that matched
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vals: Vec<Vec<Optval>>,
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/// Free string fragments
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pub free: Vec<String>,
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}
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/// The type returned when the command line does not conform to the
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/// expected format. Use the `Show` implementation to output detailed
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/// information.
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#[deriving(Clone, PartialEq, Eq)]
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pub enum Fail_ {
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/// The option requires an argument but none was passed.
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ArgumentMissing(String),
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/// The passed option is not declared among the possible options.
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UnrecognizedOption(String),
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/// A required option is not present.
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OptionMissing(String),
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/// A single occurrence option is being used multiple times.
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OptionDuplicated(String),
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/// There's an argument being passed to a non-argument option.
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UnexpectedArgument(String),
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}
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/// The type of failure that occurred.
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#[deriving(PartialEq, Eq)]
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#[allow(missing_doc)]
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pub enum FailType {
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ArgumentMissing_,
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UnrecognizedOption_,
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OptionMissing_,
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OptionDuplicated_,
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UnexpectedArgument_,
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}
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/// The result of parsing a command line with a set of options.
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pub type Result = result::Result<Matches, Fail_>;
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impl Name {
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fn from_str(nm: &str) -> Name {
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if nm.len() == 1u {
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Short(nm.char_at(0u))
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} else {
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Long(nm.to_string())
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}
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}
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fn to_string(&self) -> String {
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match *self {
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Short(ch) => ch.to_string(),
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Long(ref s) => s.to_string()
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}
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}
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}
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impl OptGroup {
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/// Translate OptGroup into Opt.
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/// (Both short and long names correspond to different Opts).
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pub fn long_to_short(&self) -> Opt {
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let OptGroup {
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short_name: short_name,
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long_name: long_name,
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hasarg: hasarg,
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occur: occur,
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..
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} = (*self).clone();
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match (short_name.len(), long_name.len()) {
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(0,0) => fail!("this long-format option was given no name"),
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(0,_) => Opt {
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name: Long((long_name)),
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hasarg: hasarg,
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occur: occur,
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aliases: Vec::new()
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},
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(1,0) => Opt {
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name: Short(short_name.as_slice().char_at(0)),
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hasarg: hasarg,
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occur: occur,
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aliases: Vec::new()
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},
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(1,_) => Opt {
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name: Long((long_name)),
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hasarg: hasarg,
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occur: occur,
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aliases: vec!(
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Opt {
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name: Short(short_name.as_slice().char_at(0)),
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hasarg: hasarg,
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occur: occur,
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aliases: Vec::new()
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}
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)
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},
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(_,_) => fail!("something is wrong with the long-form opt")
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}
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}
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}
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impl Matches {
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fn opt_vals(&self, nm: &str) -> Vec<Optval> {
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match find_opt(self.opts.as_slice(), Name::from_str(nm)) {
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Some(id) => (*self.vals.get(id)).clone(),
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None => fail!("No option '{}' defined", nm)
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}
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}
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fn opt_val(&self, nm: &str) -> Option<Optval> {
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let vals = self.opt_vals(nm);
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if vals.is_empty() {
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None
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} else {
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Some((*vals.get(0)).clone())
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}
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}
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/// Returns true if an option was matched.
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pub fn opt_present(&self, nm: &str) -> bool {
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!self.opt_vals(nm).is_empty()
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}
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/// Returns the number of times an option was matched.
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pub fn opt_count(&self, nm: &str) -> uint {
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self.opt_vals(nm).len()
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}
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/// Returns true if any of several options were matched.
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pub fn opts_present(&self, names: &[String]) -> bool {
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for nm in names.iter() {
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match find_opt(self.opts.as_slice(),
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Name::from_str(nm.as_slice())) {
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Some(id) if !self.vals.get(id).is_empty() => return true,
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_ => (),
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};
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}
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false
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}
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/// Returns the string argument supplied to one of several matching options or `None`.
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pub fn opts_str(&self, names: &[String]) -> Option<String> {
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for nm in names.iter() {
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match self.opt_val(nm.as_slice()) {
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Some(Val(ref s)) => return Some(s.clone()),
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_ => ()
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}
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}
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None
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}
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/// Returns a vector of the arguments provided to all matches of the given
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/// option.
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///
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/// Used when an option accepts multiple values.
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pub fn opt_strs(&self, nm: &str) -> Vec<String> {
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let mut acc: Vec<String> = Vec::new();
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let r = self.opt_vals(nm);
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for v in r.iter() {
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match *v {
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Val(ref s) => acc.push((*s).clone()),
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_ => ()
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}
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}
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acc
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}
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/// Returns the string argument supplied to a matching option or `None`.
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pub fn opt_str(&self, nm: &str) -> Option<String> {
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let vals = self.opt_vals(nm);
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if vals.is_empty() {
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return None::<String>;
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}
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match vals.get(0) {
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&Val(ref s) => Some((*s).clone()),
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_ => None
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}
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}
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/// Returns the matching string, a default, or none.
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///
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/// Returns none if the option was not present, `def` if the option was
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/// present but no argument was provided, and the argument if the option was
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/// present and an argument was provided.
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pub fn opt_default(&self, nm: &str, def: &str) -> Option<String> {
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let vals = self.opt_vals(nm);
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if vals.is_empty() {
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return None;
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}
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match vals.get(0) {
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&Val(ref s) => Some((*s).clone()),
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_ => Some(def.to_string())
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}
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}
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}
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fn is_arg(arg: &str) -> bool {
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arg.len() > 1 && arg.as_bytes()[0] == '-' as u8
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}
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fn find_opt(opts: &[Opt], nm: Name) -> Option<uint> {
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// Search main options.
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let pos = opts.iter().position(|opt| opt.name == nm);
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if pos.is_some() {
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return pos
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||
}
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// Search in aliases.
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for candidate in opts.iter() {
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if candidate.aliases.iter().position(|opt| opt.name == nm).is_some() {
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return opts.iter().position(|opt| opt.name == candidate.name);
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}
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}
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None
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}
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/// Create a long option that is required and takes an argument.
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pub fn reqopt(short_name: &str, long_name: &str, desc: &str, hint: &str) -> OptGroup {
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let len = short_name.len();
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assert!(len == 1 || len == 0);
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OptGroup {
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short_name: short_name.to_string(),
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long_name: long_name.to_string(),
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hint: hint.to_string(),
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desc: desc.to_string(),
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hasarg: Yes,
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occur: Req
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}
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}
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/// Create a long option that is optional and takes an argument.
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pub fn optopt(short_name: &str, long_name: &str, desc: &str, hint: &str) -> OptGroup {
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let len = short_name.len();
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assert!(len == 1 || len == 0);
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OptGroup {
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short_name: short_name.to_string(),
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long_name: long_name.to_string(),
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hint: hint.to_string(),
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desc: desc.to_string(),
|
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hasarg: Yes,
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occur: Optional
|
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}
|
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}
|
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|
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/// Create a long option that is optional and does not take an argument.
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pub fn optflag(short_name: &str, long_name: &str, desc: &str) -> OptGroup {
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let len = short_name.len();
|
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assert!(len == 1 || len == 0);
|
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OptGroup {
|
||
short_name: short_name.to_string(),
|
||
long_name: long_name.to_string(),
|
||
hint: "".to_string(),
|
||
desc: desc.to_string(),
|
||
hasarg: No,
|
||
occur: Optional
|
||
}
|
||
}
|
||
|
||
/// Create a long option that can occur more than once and does not
|
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/// take an argument.
|
||
pub fn optflagmulti(short_name: &str, long_name: &str, desc: &str) -> OptGroup {
|
||
let len = short_name.len();
|
||
assert!(len == 1 || len == 0);
|
||
OptGroup {
|
||
short_name: short_name.to_string(),
|
||
long_name: long_name.to_string(),
|
||
hint: "".to_string(),
|
||
desc: desc.to_string(),
|
||
hasarg: No,
|
||
occur: Multi
|
||
}
|
||
}
|
||
|
||
/// Create a long option that is optional and takes an optional argument.
|
||
pub fn optflagopt(short_name: &str, long_name: &str, desc: &str, hint: &str) -> OptGroup {
|
||
let len = short_name.len();
|
||
assert!(len == 1 || len == 0);
|
||
OptGroup {
|
||
short_name: short_name.to_string(),
|
||
long_name: long_name.to_string(),
|
||
hint: hint.to_string(),
|
||
desc: desc.to_string(),
|
||
hasarg: Maybe,
|
||
occur: Optional
|
||
}
|
||
}
|
||
|
||
/// Create a long option that is optional, takes an argument, and may occur
|
||
/// multiple times.
|
||
pub fn optmulti(short_name: &str, long_name: &str, desc: &str, hint: &str) -> OptGroup {
|
||
let len = short_name.len();
|
||
assert!(len == 1 || len == 0);
|
||
OptGroup {
|
||
short_name: short_name.to_string(),
|
||
long_name: long_name.to_string(),
|
||
hint: hint.to_string(),
|
||
desc: desc.to_string(),
|
||
hasarg: Yes,
|
||
occur: Multi
|
||
}
|
||
}
|
||
|
||
/// Create a generic option group, stating all parameters explicitly
|
||
pub fn opt(short_name: &str,
|
||
long_name: &str,
|
||
desc: &str,
|
||
hint: &str,
|
||
hasarg: HasArg,
|
||
occur: Occur) -> OptGroup {
|
||
let len = short_name.len();
|
||
assert!(len == 1 || len == 0);
|
||
OptGroup {
|
||
short_name: short_name.to_string(),
|
||
long_name: long_name.to_string(),
|
||
hint: hint.to_string(),
|
||
desc: desc.to_string(),
|
||
hasarg: hasarg,
|
||
occur: occur
|
||
}
|
||
}
|
||
|
||
impl Fail_ {
|
||
/// Convert a `Fail_` enum into an error string.
|
||
#[deprecated="use `Show` (`{}` format specifier)"]
|
||
pub fn to_err_msg(self) -> String {
|
||
self.to_string()
|
||
}
|
||
}
|
||
|
||
impl fmt::Show for Fail_ {
|
||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||
match *self {
|
||
ArgumentMissing(ref nm) => {
|
||
write!(f, "Argument to option '{}' missing.", *nm)
|
||
}
|
||
UnrecognizedOption(ref nm) => {
|
||
write!(f, "Unrecognized option: '{}'.", *nm)
|
||
}
|
||
OptionMissing(ref nm) => {
|
||
write!(f, "Required option '{}' missing.", *nm)
|
||
}
|
||
OptionDuplicated(ref nm) => {
|
||
write!(f, "Option '{}' given more than once.", *nm)
|
||
}
|
||
UnexpectedArgument(ref nm) => {
|
||
write!(f, "Option '{}' does not take an argument.", *nm)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Parse command line arguments according to the provided options.
|
||
///
|
||
/// On success returns `Ok(Opt)`. Use methods such as `opt_present`
|
||
/// `opt_str`, etc. to interrogate results. Returns `Err(Fail_)` on
|
||
/// failure: use the `Show` implementation of `Fail_` to display
|
||
/// information about it.
|
||
pub fn getopts(args: &[String], optgrps: &[OptGroup]) -> Result {
|
||
let opts: Vec<Opt> = optgrps.iter().map(|x| x.long_to_short()).collect();
|
||
let n_opts = opts.len();
|
||
|
||
fn f(_x: uint) -> Vec<Optval> { return Vec::new(); }
|
||
|
||
let mut vals = Vec::from_fn(n_opts, f);
|
||
let mut free: Vec<String> = Vec::new();
|
||
let l = args.len();
|
||
let mut i = 0;
|
||
while i < l {
|
||
let cur = args[i].clone();
|
||
let curlen = cur.len();
|
||
if !is_arg(cur.as_slice()) {
|
||
free.push(cur);
|
||
} else if cur.as_slice() == "--" {
|
||
let mut j = i + 1;
|
||
while j < l { free.push(args[j].clone()); j += 1; }
|
||
break;
|
||
} else {
|
||
let mut names;
|
||
let mut i_arg = None;
|
||
if cur.as_bytes()[1] == '-' as u8 {
|
||
let tail = cur.as_slice().slice(2, curlen);
|
||
let tail_eq: Vec<&str> = tail.split('=').collect();
|
||
if tail_eq.len() <= 1 {
|
||
names = vec!(Long(tail.to_string()));
|
||
} else {
|
||
names =
|
||
vec!(Long((*tail_eq.get(0)).to_string()));
|
||
i_arg = Some((*tail_eq.get(1)).to_string());
|
||
}
|
||
} else {
|
||
let mut j = 1;
|
||
let mut last_valid_opt_id = None;
|
||
names = Vec::new();
|
||
while j < curlen {
|
||
let range = cur.as_slice().char_range_at(j);
|
||
let opt = Short(range.ch);
|
||
|
||
/* In a series of potential options (eg. -aheJ), if we
|
||
see one which takes an argument, we assume all
|
||
subsequent characters make up the argument. This
|
||
allows options such as -L/usr/local/lib/foo to be
|
||
interpreted correctly
|
||
*/
|
||
|
||
match find_opt(opts.as_slice(), opt.clone()) {
|
||
Some(id) => last_valid_opt_id = Some(id),
|
||
None => {
|
||
let arg_follows =
|
||
last_valid_opt_id.is_some() &&
|
||
match opts.get(last_valid_opt_id.unwrap())
|
||
.hasarg {
|
||
|
||
Yes | Maybe => true,
|
||
No => false
|
||
};
|
||
if arg_follows && j < curlen {
|
||
i_arg = Some(cur.as_slice()
|
||
.slice(j, curlen).to_string());
|
||
break;
|
||
} else {
|
||
last_valid_opt_id = None;
|
||
}
|
||
}
|
||
}
|
||
names.push(opt);
|
||
j = range.next;
|
||
}
|
||
}
|
||
let mut name_pos = 0;
|
||
for nm in names.iter() {
|
||
name_pos += 1;
|
||
let optid = match find_opt(opts.as_slice(), (*nm).clone()) {
|
||
Some(id) => id,
|
||
None => return Err(UnrecognizedOption(nm.to_string()))
|
||
};
|
||
match opts.get(optid).hasarg {
|
||
No => {
|
||
if !i_arg.is_none() {
|
||
return Err(UnexpectedArgument(nm.to_string()));
|
||
}
|
||
vals.get_mut(optid).push(Given);
|
||
}
|
||
Maybe => {
|
||
if !i_arg.is_none() {
|
||
vals.get_mut(optid)
|
||
.push(Val((i_arg.clone())
|
||
.unwrap()));
|
||
} else if name_pos < names.len() || i + 1 == l ||
|
||
is_arg(args[i + 1].as_slice()) {
|
||
vals.get_mut(optid).push(Given);
|
||
} else {
|
||
i += 1;
|
||
vals.get_mut(optid).push(Val(args[i].clone()));
|
||
}
|
||
}
|
||
Yes => {
|
||
if !i_arg.is_none() {
|
||
vals.get_mut(optid).push(Val(i_arg.clone().unwrap()));
|
||
} else if i + 1 == l {
|
||
return Err(ArgumentMissing(nm.to_string()));
|
||
} else {
|
||
i += 1;
|
||
vals.get_mut(optid).push(Val(args[i].clone()));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
i += 1;
|
||
}
|
||
i = 0u;
|
||
while i < n_opts {
|
||
let n = vals.get(i).len();
|
||
let occ = opts.get(i).occur;
|
||
if occ == Req {
|
||
if n == 0 {
|
||
return Err(OptionMissing(opts.get(i).name.to_string()));
|
||
}
|
||
}
|
||
if occ != Multi {
|
||
if n > 1 {
|
||
return Err(OptionDuplicated(opts.get(i).name.to_string()));
|
||
}
|
||
}
|
||
i += 1;
|
||
}
|
||
Ok(Matches {
|
||
opts: opts,
|
||
vals: vals,
|
||
free: free
|
||
})
|
||
}
|
||
|
||
/// Derive a usage message from a set of long options.
|
||
pub fn usage(brief: &str, opts: &[OptGroup]) -> String {
|
||
|
||
let desc_sep = format!("\n{}", " ".repeat(24));
|
||
|
||
let mut rows = opts.iter().map(|optref| {
|
||
let OptGroup{short_name: short_name,
|
||
long_name: long_name,
|
||
hint: hint,
|
||
desc: desc,
|
||
hasarg: hasarg,
|
||
..} = (*optref).clone();
|
||
|
||
let mut row = " ".repeat(4);
|
||
|
||
// short option
|
||
match short_name.len() {
|
||
0 => {}
|
||
1 => {
|
||
row.push_char('-');
|
||
row.push_str(short_name.as_slice());
|
||
row.push_char(' ');
|
||
}
|
||
_ => fail!("the short name should only be 1 ascii char long"),
|
||
}
|
||
|
||
// long option
|
||
match long_name.len() {
|
||
0 => {}
|
||
_ => {
|
||
row.push_str("--");
|
||
row.push_str(long_name.as_slice());
|
||
row.push_char(' ');
|
||
}
|
||
}
|
||
|
||
// arg
|
||
match hasarg {
|
||
No => {}
|
||
Yes => row.push_str(hint.as_slice()),
|
||
Maybe => {
|
||
row.push_char('[');
|
||
row.push_str(hint.as_slice());
|
||
row.push_char(']');
|
||
}
|
||
}
|
||
|
||
// FIXME: #5516 should be graphemes not codepoints
|
||
// here we just need to indent the start of the description
|
||
let rowlen = row.as_slice().char_len();
|
||
if rowlen < 24 {
|
||
for _ in range(0, 24 - rowlen) {
|
||
row.push_char(' ');
|
||
}
|
||
} else {
|
||
row.push_str(desc_sep.as_slice())
|
||
}
|
||
|
||
// Normalize desc to contain words separated by one space character
|
||
let mut desc_normalized_whitespace = String::new();
|
||
for word in desc.as_slice().words() {
|
||
desc_normalized_whitespace.push_str(word);
|
||
desc_normalized_whitespace.push_char(' ');
|
||
}
|
||
|
||
// FIXME: #5516 should be graphemes not codepoints
|
||
let mut desc_rows = Vec::new();
|
||
each_split_within(desc_normalized_whitespace.as_slice(),
|
||
54,
|
||
|substr| {
|
||
desc_rows.push(substr.to_string());
|
||
true
|
||
});
|
||
|
||
// FIXME: #5516 should be graphemes not codepoints
|
||
// wrapped description
|
||
row.push_str(desc_rows.connect(desc_sep.as_slice()).as_slice());
|
||
|
||
row
|
||
});
|
||
|
||
format!("{}\n\nOptions:\n{}\n", brief,
|
||
rows.collect::<Vec<String>>().connect("\n"))
|
||
}
|
||
|
||
fn format_option(opt: &OptGroup) -> String {
|
||
let mut line = String::new();
|
||
|
||
if opt.occur != Req {
|
||
line.push_char('[');
|
||
}
|
||
|
||
// Use short_name is possible, but fallback to long_name.
|
||
if opt.short_name.len() > 0 {
|
||
line.push_char('-');
|
||
line.push_str(opt.short_name.as_slice());
|
||
} else {
|
||
line.push_str("--");
|
||
line.push_str(opt.long_name.as_slice());
|
||
}
|
||
|
||
if opt.hasarg != No {
|
||
line.push_char(' ');
|
||
if opt.hasarg == Maybe {
|
||
line.push_char('[');
|
||
}
|
||
line.push_str(opt.hint.as_slice());
|
||
if opt.hasarg == Maybe {
|
||
line.push_char(']');
|
||
}
|
||
}
|
||
|
||
if opt.occur != Req {
|
||
line.push_char(']');
|
||
}
|
||
if opt.occur == Multi {
|
||
line.push_str("..");
|
||
}
|
||
|
||
line
|
||
}
|
||
|
||
/// Derive a short one-line usage summary from a set of long options.
|
||
pub fn short_usage(program_name: &str, opts: &[OptGroup]) -> String {
|
||
let mut line = format!("Usage: {} ", program_name);
|
||
line.push_str(opts.iter()
|
||
.map(format_option)
|
||
.collect::<Vec<String>>()
|
||
.connect(" ")
|
||
.as_slice());
|
||
line
|
||
}
|
||
|
||
|
||
/// Splits a string into substrings with possibly internal whitespace,
|
||
/// each of them at most `lim` bytes long. The substrings have leading and trailing
|
||
/// whitespace removed, and are only cut at whitespace boundaries.
|
||
///
|
||
/// Note: Function was moved here from `std::str` because this module is the only place that
|
||
/// uses it, and because it was to specific for a general string function.
|
||
///
|
||
/// #Failure:
|
||
///
|
||
/// Fails during iteration if the string contains a non-whitespace
|
||
/// sequence longer than the limit.
|
||
fn each_split_within<'a>(ss: &'a str, lim: uint, it: |&'a str| -> bool)
|
||
-> bool {
|
||
// Just for fun, let's write this as a state machine:
|
||
|
||
enum SplitWithinState {
|
||
A, // leading whitespace, initial state
|
||
B, // words
|
||
C, // internal and trailing whitespace
|
||
}
|
||
enum Whitespace {
|
||
Ws, // current char is whitespace
|
||
Cr // current char is not whitespace
|
||
}
|
||
enum LengthLimit {
|
||
UnderLim, // current char makes current substring still fit in limit
|
||
OverLim // current char makes current substring no longer fit in limit
|
||
}
|
||
|
||
let mut slice_start = 0;
|
||
let mut last_start = 0;
|
||
let mut last_end = 0;
|
||
let mut state = A;
|
||
let mut fake_i = ss.len();
|
||
let mut lim = lim;
|
||
|
||
let mut cont = true;
|
||
|
||
// if the limit is larger than the string, lower it to save cycles
|
||
if lim >= fake_i {
|
||
lim = fake_i;
|
||
}
|
||
|
||
let machine: |&mut bool, (uint, char)| -> bool = |cont, (i, c)| {
|
||
let whitespace = if ::std::char::is_whitespace(c) { Ws } else { Cr };
|
||
let limit = if (i - slice_start + 1) <= lim { UnderLim } else { OverLim };
|
||
|
||
state = match (state, whitespace, limit) {
|
||
(A, Ws, _) => { A }
|
||
(A, Cr, _) => { slice_start = i; last_start = i; B }
|
||
|
||
(B, Cr, UnderLim) => { B }
|
||
(B, Cr, OverLim) if (i - last_start + 1) > lim
|
||
=> fail!("word starting with {} longer than limit!",
|
||
ss.slice(last_start, i + 1)),
|
||
(B, Cr, OverLim) => {
|
||
*cont = it(ss.slice(slice_start, last_end));
|
||
slice_start = last_start;
|
||
B
|
||
}
|
||
(B, Ws, UnderLim) => {
|
||
last_end = i;
|
||
C
|
||
}
|
||
(B, Ws, OverLim) => {
|
||
last_end = i;
|
||
*cont = it(ss.slice(slice_start, last_end));
|
||
A
|
||
}
|
||
|
||
(C, Cr, UnderLim) => {
|
||
last_start = i;
|
||
B
|
||
}
|
||
(C, Cr, OverLim) => {
|
||
*cont = it(ss.slice(slice_start, last_end));
|
||
slice_start = i;
|
||
last_start = i;
|
||
last_end = i;
|
||
B
|
||
}
|
||
(C, Ws, OverLim) => {
|
||
*cont = it(ss.slice(slice_start, last_end));
|
||
A
|
||
}
|
||
(C, Ws, UnderLim) => {
|
||
C
|
||
}
|
||
};
|
||
|
||
*cont
|
||
};
|
||
|
||
ss.char_indices().advance(|x| machine(&mut cont, x));
|
||
|
||
// Let the automaton 'run out' by supplying trailing whitespace
|
||
while cont && match state { B | C => true, A => false } {
|
||
machine(&mut cont, (fake_i, ' '));
|
||
fake_i += 1;
|
||
}
|
||
return cont;
|
||
}
|
||
|
||
#[test]
|
||
fn test_split_within() {
|
||
fn t(s: &str, i: uint, u: &[String]) {
|
||
let mut v = Vec::new();
|
||
each_split_within(s, i, |s| { v.push(s.to_string()); true });
|
||
assert!(v.iter().zip(u.iter()).all(|(a,b)| a == b));
|
||
}
|
||
t("", 0, []);
|
||
t("", 15, []);
|
||
t("hello", 15, ["hello".to_string()]);
|
||
t("\nMary had a little lamb\nLittle lamb\n", 15, [
|
||
"Mary had a".to_string(),
|
||
"little lamb".to_string(),
|
||
"Little lamb".to_string()
|
||
]);
|
||
t("\nMary had a little lamb\nLittle lamb\n", ::std::uint::MAX,
|
||
["Mary had a little lamb\nLittle lamb".to_string()]);
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
|
||
use std::result::{Err, Ok};
|
||
use std::result;
|
||
|
||
fn check_fail_type(f: Fail_, ft: FailType) {
|
||
match f {
|
||
ArgumentMissing(_) => assert!(ft == ArgumentMissing_),
|
||
UnrecognizedOption(_) => assert!(ft == UnrecognizedOption_),
|
||
OptionMissing(_) => assert!(ft == OptionMissing_),
|
||
OptionDuplicated(_) => assert!(ft == OptionDuplicated_),
|
||
UnexpectedArgument(_) => assert!(ft == UnexpectedArgument_)
|
||
}
|
||
}
|
||
|
||
// Tests for reqopt
|
||
#[test]
|
||
fn test_reqopt() {
|
||
let long_args = vec!("--test=20".to_string());
|
||
let opts = vec!(reqopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!(m.opt_present("t"));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => { fail!("test_reqopt failed (long arg)"); }
|
||
}
|
||
let short_args = vec!("-t".to_string(), "20".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Ok(ref m) => {
|
||
assert!((m.opt_present("test")));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => { fail!("test_reqopt failed (short arg)"); }
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_reqopt_missing() {
|
||
let args = vec!("blah".to_string());
|
||
let opts = vec!(reqopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, OptionMissing_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_reqopt_no_arg() {
|
||
let long_args = vec!("--test".to_string());
|
||
let opts = vec!(reqopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_reqopt_multi() {
|
||
let args = vec!("--test=20".to_string(), "-t".to_string(), "30".to_string());
|
||
let opts = vec!(reqopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, OptionDuplicated_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
// Tests for optopt
|
||
#[test]
|
||
fn test_optopt() {
|
||
let long_args = vec!("--test=20".to_string());
|
||
let opts = vec!(optopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string(), "20".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Ok(ref m) => {
|
||
assert!((m.opt_present("test")));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optopt_missing() {
|
||
let args = vec!("blah".to_string());
|
||
let opts = vec!(optopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(!m.opt_present("test"));
|
||
assert!(!m.opt_present("t"));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optopt_no_arg() {
|
||
let long_args = vec!("--test".to_string());
|
||
let opts = vec!(optopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optopt_multi() {
|
||
let args = vec!("--test=20".to_string(), "-t".to_string(), "30".to_string());
|
||
let opts = vec!(optopt("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, OptionDuplicated_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
// Tests for optflag
|
||
#[test]
|
||
fn test_optflag() {
|
||
let long_args = vec!("--test".to_string());
|
||
let opts = vec!(optflag("t", "test", "testing"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(m.opt_present("test"));
|
||
assert!(m.opt_present("t"));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Ok(ref m) => {
|
||
assert!(m.opt_present("test"));
|
||
assert!(m.opt_present("t"));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflag_missing() {
|
||
let args = vec!("blah".to_string());
|
||
let opts = vec!(optflag("t", "test", "testing"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(!m.opt_present("test"));
|
||
assert!(!m.opt_present("t"));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflag_long_arg() {
|
||
let args = vec!("--test=20".to_string());
|
||
let opts = vec!(optflag("t", "test", "testing"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => {
|
||
check_fail_type(f, UnexpectedArgument_);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflag_multi() {
|
||
let args = vec!("--test".to_string(), "-t".to_string());
|
||
let opts = vec!(optflag("t", "test", "testing"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, OptionDuplicated_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflag_short_arg() {
|
||
let args = vec!("-t".to_string(), "20".to_string());
|
||
let opts = vec!(optflag("t", "test", "testing"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
// The next variable after the flag is just a free argument
|
||
|
||
assert!(*m.free.get(0) == "20".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
// Tests for optflagmulti
|
||
#[test]
|
||
fn test_optflagmulti_short1() {
|
||
let args = vec!("-v".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("v"), 1);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflagmulti_short2a() {
|
||
let args = vec!("-v".to_string(), "-v".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("v"), 2);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflagmulti_short2b() {
|
||
let args = vec!("-vv".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("v"), 2);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflagmulti_long1() {
|
||
let args = vec!("--verbose".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("verbose"), 1);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflagmulti_long2() {
|
||
let args = vec!("--verbose".to_string(), "--verbose".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("verbose"), 2);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optflagmulti_mix() {
|
||
let args = vec!("--verbose".to_string(), "-v".to_string(),
|
||
"-vv".to_string(), "verbose".to_string());
|
||
let opts = vec!(optflagmulti("v", "verbose", "verbosity"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert_eq!(m.opt_count("verbose"), 4);
|
||
assert_eq!(m.opt_count("v"), 4);
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
// Tests for optmulti
|
||
#[test]
|
||
fn test_optmulti() {
|
||
let long_args = vec!("--test=20".to_string());
|
||
let opts = vec!(optmulti("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!((m.opt_present("test")));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string(), "20".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Ok(ref m) => {
|
||
assert!((m.opt_present("test")));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optmulti_missing() {
|
||
let args = vec!("blah".to_string());
|
||
let opts = vec!(optmulti("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(!m.opt_present("test"));
|
||
assert!(!m.opt_present("t"));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optmulti_no_arg() {
|
||
let long_args = vec!("--test".to_string());
|
||
let opts = vec!(optmulti("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-t".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Err(f) => check_fail_type(f, ArgumentMissing_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_optmulti_multi() {
|
||
let args = vec!("--test=20".to_string(), "-t".to_string(), "30".to_string());
|
||
let opts = vec!(optmulti("t", "test", "testing", "TEST"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), "20".to_string());
|
||
assert!(m.opt_present("t"));
|
||
assert_eq!(m.opt_str("t").unwrap(), "20".to_string());
|
||
let pair = m.opt_strs("test");
|
||
assert!(*pair.get(0) == "20".to_string());
|
||
assert!(*pair.get(1) == "30".to_string());
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_unrecognized_option() {
|
||
let long_args = vec!("--untest".to_string());
|
||
let opts = vec!(optmulti("t", "test", "testing", "TEST"));
|
||
let rs = getopts(long_args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Err(f) => check_fail_type(f, UnrecognizedOption_),
|
||
_ => fail!()
|
||
}
|
||
let short_args = vec!("-u".to_string());
|
||
match getopts(short_args.as_slice(), opts.as_slice()) {
|
||
Err(f) => check_fail_type(f, UnrecognizedOption_),
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_combined() {
|
||
let args =
|
||
vec!("prog".to_string(),
|
||
"free1".to_string(),
|
||
"-s".to_string(),
|
||
"20".to_string(),
|
||
"free2".to_string(),
|
||
"--flag".to_string(),
|
||
"--long=30".to_string(),
|
||
"-f".to_string(),
|
||
"-m".to_string(),
|
||
"40".to_string(),
|
||
"-m".to_string(),
|
||
"50".to_string(),
|
||
"-n".to_string(),
|
||
"-A B".to_string(),
|
||
"-n".to_string(),
|
||
"-60 70".to_string());
|
||
let opts =
|
||
vec!(optopt("s", "something", "something", "SOMETHING"),
|
||
optflag("", "flag", "a flag"),
|
||
reqopt("", "long", "hi", "LONG"),
|
||
optflag("f", "", "another flag"),
|
||
optmulti("m", "", "mmmmmm", "YUM"),
|
||
optmulti("n", "", "nothing", "NOTHING"),
|
||
optopt("", "notpresent", "nothing to see here", "NOPE"));
|
||
let rs = getopts(args.as_slice(), opts.as_slice());
|
||
match rs {
|
||
Ok(ref m) => {
|
||
assert!(*m.free.get(0) == "prog".to_string());
|
||
assert!(*m.free.get(1) == "free1".to_string());
|
||
assert_eq!(m.opt_str("s").unwrap(), "20".to_string());
|
||
assert!(*m.free.get(2) == "free2".to_string());
|
||
assert!((m.opt_present("flag")));
|
||
assert_eq!(m.opt_str("long").unwrap(), "30".to_string());
|
||
assert!((m.opt_present("f")));
|
||
let pair = m.opt_strs("m");
|
||
assert!(*pair.get(0) == "40".to_string());
|
||
assert!(*pair.get(1) == "50".to_string());
|
||
let pair = m.opt_strs("n");
|
||
assert!(*pair.get(0) == "-A B".to_string());
|
||
assert!(*pair.get(1) == "-60 70".to_string());
|
||
assert!((!m.opt_present("notpresent")));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_multi() {
|
||
let opts = vec!(optopt("e", "", "encrypt", "ENCRYPT"),
|
||
optopt("", "encrypt", "encrypt", "ENCRYPT"),
|
||
optopt("f", "", "flag", "FLAG"));
|
||
|
||
let args_single = vec!("-e".to_string(), "foo".to_string());
|
||
let matches_single = &match getopts(args_single.as_slice(),
|
||
opts.as_slice()) {
|
||
result::Ok(m) => m,
|
||
result::Err(_) => fail!()
|
||
};
|
||
assert!(matches_single.opts_present(["e".to_string()]));
|
||
assert!(matches_single.opts_present(["encrypt".to_string(), "e".to_string()]));
|
||
assert!(matches_single.opts_present(["e".to_string(), "encrypt".to_string()]));
|
||
assert!(!matches_single.opts_present(["encrypt".to_string()]));
|
||
assert!(!matches_single.opts_present(["thing".to_string()]));
|
||
assert!(!matches_single.opts_present([]));
|
||
|
||
assert_eq!(matches_single.opts_str(["e".to_string()]).unwrap(), "foo".to_string());
|
||
assert_eq!(matches_single.opts_str(["e".to_string(), "encrypt".to_string()]).unwrap(),
|
||
"foo".to_string());
|
||
assert_eq!(matches_single.opts_str(["encrypt".to_string(), "e".to_string()]).unwrap(),
|
||
"foo".to_string());
|
||
|
||
let args_both = vec!("-e".to_string(), "foo".to_string(), "--encrypt".to_string(),
|
||
"foo".to_string());
|
||
let matches_both = &match getopts(args_both.as_slice(),
|
||
opts.as_slice()) {
|
||
result::Ok(m) => m,
|
||
result::Err(_) => fail!()
|
||
};
|
||
assert!(matches_both.opts_present(["e".to_string()]));
|
||
assert!(matches_both.opts_present(["encrypt".to_string()]));
|
||
assert!(matches_both.opts_present(["encrypt".to_string(), "e".to_string()]));
|
||
assert!(matches_both.opts_present(["e".to_string(), "encrypt".to_string()]));
|
||
assert!(!matches_both.opts_present(["f".to_string()]));
|
||
assert!(!matches_both.opts_present(["thing".to_string()]));
|
||
assert!(!matches_both.opts_present([]));
|
||
|
||
assert_eq!(matches_both.opts_str(["e".to_string()]).unwrap(), "foo".to_string());
|
||
assert_eq!(matches_both.opts_str(["encrypt".to_string()]).unwrap(), "foo".to_string());
|
||
assert_eq!(matches_both.opts_str(["e".to_string(), "encrypt".to_string()]).unwrap(),
|
||
"foo".to_string());
|
||
assert_eq!(matches_both.opts_str(["encrypt".to_string(), "e".to_string()]).unwrap(),
|
||
"foo".to_string());
|
||
}
|
||
|
||
#[test]
|
||
fn test_nospace() {
|
||
let args = vec!("-Lfoo".to_string(), "-M.".to_string());
|
||
let opts = vec!(optmulti("L", "", "library directory", "LIB"),
|
||
optmulti("M", "", "something", "MMMM"));
|
||
let matches = &match getopts(args.as_slice(), opts.as_slice()) {
|
||
result::Ok(m) => m,
|
||
result::Err(_) => fail!()
|
||
};
|
||
assert!(matches.opts_present(["L".to_string()]));
|
||
assert_eq!(matches.opts_str(["L".to_string()]).unwrap(), "foo".to_string());
|
||
assert!(matches.opts_present(["M".to_string()]));
|
||
assert_eq!(matches.opts_str(["M".to_string()]).unwrap(), ".".to_string());
|
||
|
||
}
|
||
|
||
#[test]
|
||
fn test_long_to_short() {
|
||
let mut short = Opt {
|
||
name: Long("banana".to_string()),
|
||
hasarg: Yes,
|
||
occur: Req,
|
||
aliases: Vec::new(),
|
||
};
|
||
short.aliases = vec!(Opt { name: Short('b'),
|
||
hasarg: Yes,
|
||
occur: Req,
|
||
aliases: Vec::new() });
|
||
let verbose = reqopt("b", "banana", "some bananas", "VAL");
|
||
|
||
assert!(verbose.long_to_short() == short);
|
||
}
|
||
|
||
#[test]
|
||
fn test_aliases_long_and_short() {
|
||
let opts = vec!(
|
||
optflagmulti("a", "apple", "Desc"));
|
||
|
||
let args = vec!("-a".to_string(), "--apple".to_string(), "-a".to_string());
|
||
|
||
let matches = getopts(args.as_slice(), opts.as_slice()).unwrap();
|
||
assert_eq!(3, matches.opt_count("a"));
|
||
assert_eq!(3, matches.opt_count("apple"));
|
||
}
|
||
|
||
#[test]
|
||
fn test_usage() {
|
||
let optgroups = vec!(
|
||
reqopt("b", "banana", "Desc", "VAL"),
|
||
optopt("a", "012345678901234567890123456789",
|
||
"Desc", "VAL"),
|
||
optflag("k", "kiwi", "Desc"),
|
||
optflagopt("p", "", "Desc", "VAL"),
|
||
optmulti("l", "", "Desc", "VAL"));
|
||
|
||
let expected =
|
||
"Usage: fruits
|
||
|
||
Options:
|
||
-b --banana VAL Desc
|
||
-a --012345678901234567890123456789 VAL
|
||
Desc
|
||
-k --kiwi Desc
|
||
-p [VAL] Desc
|
||
-l VAL Desc
|
||
".to_string();
|
||
|
||
let generated_usage = usage("Usage: fruits", optgroups.as_slice());
|
||
|
||
debug!("expected: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", generated_usage);
|
||
assert_eq!(generated_usage, expected);
|
||
}
|
||
|
||
#[test]
|
||
fn test_usage_description_wrapping() {
|
||
// indentation should be 24 spaces
|
||
// lines wrap after 78: or rather descriptions wrap after 54
|
||
|
||
let optgroups = vec!(
|
||
optflag("k", "kiwi",
|
||
"This is a long description which won't be wrapped..+.."), // 54
|
||
optflag("a", "apple",
|
||
"This is a long description which _will_ be wrapped..+.."));
|
||
|
||
let expected =
|
||
"Usage: fruits
|
||
|
||
Options:
|
||
-k --kiwi This is a long description which won't be wrapped..+..
|
||
-a --apple This is a long description which _will_ be
|
||
wrapped..+..
|
||
".to_string();
|
||
|
||
let usage = usage("Usage: fruits", optgroups.as_slice());
|
||
|
||
debug!("expected: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", usage);
|
||
assert!(usage == expected)
|
||
}
|
||
|
||
#[test]
|
||
fn test_usage_description_multibyte_handling() {
|
||
let optgroups = vec!(
|
||
optflag("k", "k\u2013w\u2013",
|
||
"The word kiwi is normally spelled with two i's"),
|
||
optflag("a", "apple",
|
||
"This \u201Cdescription\u201D has some characters that could \
|
||
confuse the line wrapping; an apple costs 0.51€ in some parts of Europe."));
|
||
|
||
let expected =
|
||
"Usage: fruits
|
||
|
||
Options:
|
||
-k --k–w– The word kiwi is normally spelled with two i's
|
||
-a --apple This “description” has some characters that could
|
||
confuse the line wrapping; an apple costs 0.51€ in
|
||
some parts of Europe.
|
||
".to_string();
|
||
|
||
let usage = usage("Usage: fruits", optgroups.as_slice());
|
||
|
||
debug!("expected: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", usage);
|
||
assert!(usage == expected)
|
||
}
|
||
|
||
#[test]
|
||
fn test_short_usage() {
|
||
let optgroups = vec!(
|
||
reqopt("b", "banana", "Desc", "VAL"),
|
||
optopt("a", "012345678901234567890123456789",
|
||
"Desc", "VAL"),
|
||
optflag("k", "kiwi", "Desc"),
|
||
optflagopt("p", "", "Desc", "VAL"),
|
||
optmulti("l", "", "Desc", "VAL"));
|
||
|
||
let expected = "Usage: fruits -b VAL [-a VAL] [-k] [-p [VAL]] [-l VAL]..".to_string();
|
||
let generated_usage = short_usage("fruits", optgroups.as_slice());
|
||
|
||
debug!("expected: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", generated_usage);
|
||
assert_eq!(generated_usage, expected);
|
||
}
|
||
}
|