1398 lines
40 KiB
Rust
1398 lines
40 KiB
Rust
// Copyright 2012-2013 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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/*!
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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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* ```
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* extern mod extra;
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* use extra::getopts::*;
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* use std::os;
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*
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* fn do_work(in: &str, out: Option<~str>) {
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* println(in);
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* println(match out {
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* Some(x) => x,
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* None => ~"No Output"
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* });
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* }
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*
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* fn print_usage(program: &str, _opts: &[Opt]) {
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* println(fmt!("Usage: %s [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 = os::args();
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*
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* let program = copy args[0];
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*
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* let opts = ~[
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* optopt("o"),
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* optflag("h"),
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* optflag("help")
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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!(fail_str(f)) }
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* };
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* if opt_present(&matches, "h") || opt_present(&matches, "help") {
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* print_usage(program, opts);
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* return;
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* }
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* let output = opt_maybe_str(&matches, "o");
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* let input: &str = if !matches.free.is_empty() {
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* copy matches.free[0]
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* } else {
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* print_usage(program, opts);
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* return;
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* };
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* do_work(input, output);
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* }
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* ```
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*/
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#[allow(missing_doc)];
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use std::cmp::Eq;
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use std::result::{Err, Ok};
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use std::result;
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use std::option::{Some, None};
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use std::str;
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use std::vec;
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#[deriving(Eq)]
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pub enum Name {
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Long(~str),
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Short(char),
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}
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#[deriving(Eq)]
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pub enum HasArg { Yes, No, Maybe, }
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#[deriving(Eq)]
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pub enum Occur { Req, Optional, Multi, }
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/// A description of a possible option
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#[deriving(Eq)]
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pub struct Opt {
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name: Name,
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hasarg: HasArg,
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occur: Occur
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}
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fn mkname(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_owned())
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}
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}
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/// Create an option that is required and takes an argument
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pub fn reqopt(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: Yes, occur: Req};
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}
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/// Create an option that is optional and takes an argument
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pub fn optopt(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: Yes, occur: Optional};
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}
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/// Create an option that is optional and does not take an argument
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pub fn optflag(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: No, occur: Optional};
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}
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/// Create an option that is optional and does not take an argument
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pub fn optflagmulti(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: No, occur: Multi};
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}
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/// Create an option that is optional and takes an optional argument
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pub fn optflagopt(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: Maybe, occur: Optional};
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}
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/**
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* Create an option that is optional, takes an argument, and may occur
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* multiple times
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*/
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pub fn optmulti(name: &str) -> Opt {
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return Opt {name: mkname(name), hasarg: Yes, occur: Multi};
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}
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#[deriving(Eq)]
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enum Optval { Val(~str), 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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*/
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#[deriving(Eq)]
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pub struct Matches {
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opts: ~[Opt],
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vals: ~[~[Optval]],
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free: ~[~str]
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}
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fn is_arg(arg: &str) -> bool {
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return arg.len() > 1 && arg[0] == '-' as u8;
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}
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fn name_str(nm: &Name) -> ~str {
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return match *nm {
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Short(ch) => str::from_char(ch),
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Long(ref s) => copy *s
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};
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}
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fn find_opt(opts: &[Opt], nm: Name) -> Option<uint> {
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opts.iter().position_(|opt| opt.name == nm)
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}
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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. Pass this value to <fail_str> to get an error message.
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*/
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#[deriving(Eq)]
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pub enum Fail_ {
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ArgumentMissing(~str),
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UnrecognizedOption(~str),
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OptionMissing(~str),
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OptionDuplicated(~str),
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UnexpectedArgument(~str),
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}
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/// Convert a `fail_` enum into an error string
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pub fn fail_str(f: Fail_) -> ~str {
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return match f {
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ArgumentMissing(ref nm) => {
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fmt!("Argument to option '%s' missing.", *nm)
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}
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UnrecognizedOption(ref nm) => {
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fmt!("Unrecognized option: '%s'.", *nm)
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}
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OptionMissing(ref nm) => {
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fmt!("Required option '%s' missing.", *nm)
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}
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OptionDuplicated(ref nm) => {
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fmt!("Option '%s' given more than once.", *nm)
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}
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UnexpectedArgument(ref nm) => {
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fmt!("Option '%s' does not take an argument.", *nm)
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}
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};
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}
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/**
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* The result of parsing a command line with a set of options
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* (result::t<Matches, Fail_>)
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*/
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pub type Result = result::Result<Matches, Fail_>;
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/**
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* Parse command line arguments according to the provided options
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*
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* On success returns `ok(Opt)`. Use functions such as `opt_present`
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* `opt_str`, etc. to interrogate results. Returns `err(Fail_)` on failure.
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* Use <fail_str> to get an error message.
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*/
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pub fn getopts(args: &[~str], opts: &[Opt]) -> Result {
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let n_opts = opts.len();
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fn f(_x: uint) -> ~[Optval] { return ~[]; }
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let mut vals = vec::from_fn(n_opts, f);
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let mut free: ~[~str] = ~[];
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let l = args.len();
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let mut i = 0;
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while i < l {
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let cur = copy args[i];
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let curlen = cur.len();
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if !is_arg(cur) {
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free.push(cur);
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} else if cur == ~"--" {
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let mut j = i + 1;
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while j < l { free.push(copy args[j]); j += 1; }
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break;
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} else {
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let mut names;
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let mut i_arg = None;
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if cur[1] == '-' as u8 {
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let tail = cur.slice(2, curlen);
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let tail_eq: ~[&str] = tail.split_iter('=').collect();
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if tail_eq.len() <= 1 {
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names = ~[Long(tail.to_owned())];
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} else {
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names =
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~[Long(tail_eq[0].to_owned())];
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i_arg = Some(tail_eq[1].to_owned());
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}
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} else {
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let mut j = 1;
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let mut last_valid_opt_id = None;
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names = ~[];
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while j < curlen {
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let range = cur.char_range_at(j);
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let opt = Short(range.ch);
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/* In a series of potential options (eg. -aheJ), if we
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see one which takes an argument, we assume all
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subsequent characters make up the argument. This
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allows options such as -L/usr/local/lib/foo to be
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interpreted correctly
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*/
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match find_opt(opts, copy opt) {
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Some(id) => last_valid_opt_id = Some(id),
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None => {
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let arg_follows =
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last_valid_opt_id.is_some() &&
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match opts[last_valid_opt_id.get()]
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.hasarg {
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Yes | Maybe => true,
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No => false
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};
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if arg_follows && j < curlen {
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i_arg = Some(cur.slice(j, curlen).to_owned());
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break;
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} else {
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last_valid_opt_id = None;
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}
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}
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}
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names.push(opt);
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j = range.next;
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}
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}
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let mut name_pos = 0;
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for names.iter().advance() |nm| {
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name_pos += 1;
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let optid = match find_opt(opts, copy *nm) {
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Some(id) => id,
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None => return Err(UnrecognizedOption(name_str(nm)))
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};
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match opts[optid].hasarg {
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No => {
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if !i_arg.is_none() {
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return Err(UnexpectedArgument(name_str(nm)));
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}
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vals[optid].push(Given);
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}
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Maybe => {
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if !i_arg.is_none() {
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vals[optid].push(Val((copy i_arg).get()));
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} else if name_pos < names.len() ||
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i + 1 == l || is_arg(args[i + 1]) {
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vals[optid].push(Given);
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} else { i += 1; vals[optid].push(Val(copy args[i])); }
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}
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Yes => {
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if !i_arg.is_none() {
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vals[optid].push(Val((copy i_arg).get()));
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} else if i + 1 == l {
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return Err(ArgumentMissing(name_str(nm)));
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} else { i += 1; vals[optid].push(Val(copy args[i])); }
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}
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}
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}
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}
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i += 1;
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}
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i = 0u;
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while i < n_opts {
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let n = vals[i].len();
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let occ = opts[i].occur;
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if occ == Req {
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if n == 0 {
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return Err(OptionMissing(name_str(&(opts[i].name))));
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}
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}
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if occ != Multi {
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if n > 1 {
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return Err(OptionDuplicated(name_str(&(opts[i].name))));
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}
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}
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i += 1;
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}
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return Ok(Matches {opts: vec::to_owned(opts),
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vals: vals,
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free: free});
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}
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fn opt_vals(mm: &Matches, nm: &str) -> ~[Optval] {
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return match find_opt(mm.opts, mkname(nm)) {
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Some(id) => copy mm.vals[id],
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None => {
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error!("No option '%s' defined", nm);
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fail!()
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}
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};
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}
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fn opt_val(mm: &Matches, nm: &str) -> Optval { copy opt_vals(mm, nm)[0] }
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/// Returns true if an option was matched
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pub fn opt_present(mm: &Matches, nm: &str) -> bool {
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!opt_vals(mm, 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(mm: &Matches, nm: &str) -> uint {
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opt_vals(mm, 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(mm: &Matches, names: &[~str]) -> bool {
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for names.iter().advance |nm| {
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match find_opt(mm.opts, mkname(*nm)) {
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Some(id) if !mm.vals[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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/**
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* Returns the string argument supplied to a matching option
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*
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* Fails if the option was not matched or if the match did not take an
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* argument
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*/
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pub fn opt_str(mm: &Matches, nm: &str) -> ~str {
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return match opt_val(mm, nm) { Val(s) => s, _ => fail!() };
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}
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/**
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* Returns the string argument supplied to one of several matching options
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*
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* Fails if the no option was provided from the given list, or if the no such
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* option took an argument
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*/
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pub fn opts_str(mm: &Matches, names: &[~str]) -> ~str {
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for names.iter().advance |nm| {
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match opt_val(mm, *nm) {
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Val(ref s) => return copy *s,
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_ => ()
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}
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}
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fail!();
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}
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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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*/
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pub fn opt_strs(mm: &Matches, nm: &str) -> ~[~str] {
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let mut acc: ~[~str] = ~[];
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let r = opt_vals(mm, nm);
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for r.iter().advance |v| {
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match *v { Val(ref s) => acc.push(copy *s), _ => () }
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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_maybe_str(mm: &Matches, nm: &str) -> Option<~str> {
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let vals = opt_vals(mm, nm);
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if vals.is_empty() { return None::<~str>; }
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return match vals[0] {
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Val(ref s) => Some(copy *s),
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_ => None
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};
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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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*/
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pub fn opt_default(mm: &Matches, nm: &str, def: &str) -> Option<~str> {
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let vals = opt_vals(mm, nm);
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if vals.is_empty() { return None::<~str>; }
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return match vals[0] { Val(ref s) => Some::<~str>(copy *s),
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_ => Some::<~str>(str::to_owned(def)) }
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}
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#[deriving(Eq)]
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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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/** A module which provides a way to specify descriptions and
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* groups of short and long option names, together.
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*/
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pub mod groups {
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use getopts::{HasArg, Long, Maybe, Multi, No, Occur, Opt, Optional, Req};
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use getopts::{Short, Yes};
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use std::str;
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use std::vec;
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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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*/
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#[deriving(Eq)]
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pub struct OptGroup {
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short_name: ~str,
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long_name: ~str,
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hint: ~str,
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desc: ~str,
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hasarg: HasArg,
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occur: Occur
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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,
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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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return OptGroup { short_name: str::to_owned(short_name),
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long_name: str::to_owned(long_name),
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hint: str::to_owned(hint),
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desc: str::to_owned(desc),
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hasarg: Yes,
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occur: Req};
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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,
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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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return OptGroup {short_name: str::to_owned(short_name),
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long_name: str::to_owned(long_name),
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hint: str::to_owned(hint),
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desc: str::to_owned(desc),
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hasarg: Yes,
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occur: Optional};
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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,
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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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return OptGroup {short_name: str::to_owned(short_name),
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long_name: str::to_owned(long_name),
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hint: ~"",
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desc: str::to_owned(desc),
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hasarg: No,
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occur: Optional};
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}
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|
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/// Create a long option that is optional and takes an optional argument
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pub fn optflagopt(short_name: &str, long_name: &str,
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desc: &str, hint: &str) -> OptGroup {
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let len = short_name.len();
|
|
assert!(len == 1 || len == 0);
|
|
return OptGroup {short_name: str::to_owned(short_name),
|
|
long_name: str::to_owned(long_name),
|
|
hint: str::to_owned(hint),
|
|
desc: str::to_owned(desc),
|
|
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);
|
|
return OptGroup {short_name: str::to_owned(short_name),
|
|
long_name: str::to_owned(long_name),
|
|
hint: str::to_owned(hint),
|
|
desc: str::to_owned(desc),
|
|
hasarg: Yes,
|
|
occur: Multi};
|
|
}
|
|
|
|
// translate OptGroup into Opt
|
|
// (both short and long names correspond to different Opts)
|
|
pub fn long_to_short(lopt: &OptGroup) -> ~[Opt] {
|
|
let OptGroup{short_name: short_name,
|
|
long_name: long_name,
|
|
hasarg: hasarg,
|
|
occur: occur,
|
|
_} = copy *lopt;
|
|
|
|
match (short_name.len(), long_name.len()) {
|
|
(0,0) => fail!("this long-format option was given no name"),
|
|
|
|
(0,_) => ~[Opt {name: Long((long_name)),
|
|
hasarg: hasarg,
|
|
occur: occur}],
|
|
|
|
(1,0) => ~[Opt {name: Short(short_name.char_at(0)),
|
|
hasarg: hasarg,
|
|
occur: occur}],
|
|
|
|
(1,_) => ~[Opt {name: Short(short_name.char_at(0)),
|
|
hasarg: hasarg,
|
|
occur: occur},
|
|
Opt {name: Long((long_name)),
|
|
hasarg: hasarg,
|
|
occur: occur}],
|
|
|
|
(_,_) => fail!("something is wrong with the long-form opt")
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse command line args with the provided long format options
|
|
*/
|
|
pub fn getopts(args: &[~str], opts: &[OptGroup]) -> ::getopts::Result {
|
|
::getopts::getopts(args, vec::flat_map(opts, long_to_short))
|
|
}
|
|
|
|
/**
|
|
* Derive a usage message from a set of long options
|
|
*/
|
|
pub fn usage(brief: &str, opts: &[OptGroup]) -> ~str {
|
|
|
|
let desc_sep = ~"\n" + " ".repeat(24);
|
|
|
|
let rows = vec::map(opts, |optref| {
|
|
let OptGroup{short_name: short_name,
|
|
long_name: long_name,
|
|
hint: hint,
|
|
desc: desc,
|
|
hasarg: hasarg,
|
|
_} = copy *optref;
|
|
|
|
let mut row = " ".repeat(4);
|
|
|
|
// short option
|
|
match short_name.len() {
|
|
0 => {}
|
|
1 => {
|
|
row.push_char('-');
|
|
row.push_str(short_name);
|
|
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);
|
|
row.push_char(' ');
|
|
}
|
|
}
|
|
|
|
// arg
|
|
match hasarg {
|
|
No => {}
|
|
Yes => row.push_str(hint),
|
|
Maybe => {
|
|
row.push_char('[');
|
|
row.push_str(hint);
|
|
row.push_char(']');
|
|
}
|
|
}
|
|
|
|
// FIXME: #5516
|
|
// here we just need to indent the start of the description
|
|
let rowlen = row.len();
|
|
if rowlen < 24 {
|
|
for (24 - rowlen).times {
|
|
row.push_char(' ')
|
|
}
|
|
} else {
|
|
row.push_str(desc_sep)
|
|
}
|
|
|
|
// Normalize desc to contain words separated by one space character
|
|
let mut desc_normalized_whitespace = ~"";
|
|
for desc.word_iter().advance |word| {
|
|
desc_normalized_whitespace.push_str(word);
|
|
desc_normalized_whitespace.push_char(' ');
|
|
}
|
|
|
|
// FIXME: #5516
|
|
let mut desc_rows = ~[];
|
|
for str::each_split_within(desc_normalized_whitespace, 54) |substr| {
|
|
desc_rows.push(substr.to_owned());
|
|
}
|
|
|
|
// FIXME: #5516
|
|
// wrapped description
|
|
row.push_str(desc_rows.connect(desc_sep));
|
|
|
|
row
|
|
});
|
|
|
|
return str::to_owned(brief) +
|
|
"\n\nOptions:\n" +
|
|
rows.connect("\n") +
|
|
"\n\n";
|
|
}
|
|
} // end groups module
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
|
|
use getopts::groups::OptGroup;
|
|
use getopts::*;
|
|
|
|
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_long() {
|
|
let args = ~[~"--test=20"];
|
|
let opts = ~[reqopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "test")));
|
|
assert_eq!(opt_str(m, "test"), ~"20");
|
|
}
|
|
_ => { fail!("test_reqopt_long failed"); }
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_long_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[reqopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_long_no_arg() {
|
|
let args = ~[~"--test"];
|
|
let opts = ~[reqopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_long_multi() {
|
|
let args = ~[~"--test=20", ~"--test=30"];
|
|
let opts = ~[reqopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_short() {
|
|
let args = ~[~"-t", ~"20"];
|
|
let opts = ~[reqopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "t")));
|
|
assert_eq!(opt_str(m, "t"), ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_short_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[reqopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_short_no_arg() {
|
|
let args = ~[~"-t"];
|
|
let opts = ~[reqopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_reqopt_short_multi() {
|
|
let args = ~[~"-t", ~"20", ~"-t", ~"30"];
|
|
let opts = ~[reqopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
|
|
// Tests for optopt
|
|
#[test]
|
|
fn test_optopt_long() {
|
|
let args = ~[~"--test=20"];
|
|
let opts = ~[optopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "test")));
|
|
assert_eq!(opt_str(m, "test"), ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_long_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "test")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_long_no_arg() {
|
|
let args = ~[~"--test"];
|
|
let opts = ~[optopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_long_multi() {
|
|
let args = ~[~"--test=20", ~"--test=30"];
|
|
let opts = ~[optopt("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_short() {
|
|
let args = ~[~"-t", ~"20"];
|
|
let opts = ~[optopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "t")));
|
|
assert_eq!(opt_str(m, "t"), ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_short_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "t")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_short_no_arg() {
|
|
let args = ~[~"-t"];
|
|
let opts = ~[optopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optopt_short_multi() {
|
|
let args = ~[~"-t", ~"20", ~"-t", ~"30"];
|
|
let opts = ~[optopt("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
|
|
// Tests for optflag
|
|
#[test]
|
|
fn test_optflag_long() {
|
|
let args = ~[~"--test"];
|
|
let opts = ~[optflag("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(opt_present(m, "test")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_long_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optflag("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "test")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_long_arg() {
|
|
let args = ~[~"--test=20"];
|
|
let opts = ~[optflag("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => {
|
|
error!(fail_str(copy f));
|
|
check_fail_type(f, UnexpectedArgument_);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_long_multi() {
|
|
let args = ~[~"--test", ~"--test"];
|
|
let opts = ~[optflag("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_short() {
|
|
let args = ~[~"-t"];
|
|
let opts = ~[optflag("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(opt_present(m, "t")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_short_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optflag("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "t")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_short_arg() {
|
|
let args = ~[~"-t", ~"20"];
|
|
let opts = ~[optflag("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
// The next variable after the flag is just a free argument
|
|
|
|
assert!(m.free[0] == ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflag_short_multi() {
|
|
let args = ~[~"-t", ~"-t"];
|
|
let opts = ~[optflag("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, OptionDuplicated_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
// Tests for optflagmulti
|
|
#[test]
|
|
fn test_optflagmulti_short1() {
|
|
let args = ~[~"-v"];
|
|
let opts = ~[optflagmulti("v")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert_eq!(opt_count(m, "v"), 1);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflagmulti_short2a() {
|
|
let args = ~[~"-v", ~"-v"];
|
|
let opts = ~[optflagmulti("v")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert_eq!(opt_count(m, "v"), 2);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflagmulti_short2b() {
|
|
let args = ~[~"-vv"];
|
|
let opts = ~[optflagmulti("v")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert_eq!(opt_count(m, "v"), 2);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflagmulti_long1() {
|
|
let args = ~[~"--verbose"];
|
|
let opts = ~[optflagmulti("verbose")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert_eq!(opt_count(m, "verbose"), 1);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optflagmulti_long2() {
|
|
let args = ~[~"--verbose", ~"--verbose"];
|
|
let opts = ~[optflagmulti("verbose")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert_eq!(opt_count(m, "verbose"), 2);
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
// Tests for optmulti
|
|
#[test]
|
|
fn test_optmulti_long() {
|
|
let args = ~[~"--test=20"];
|
|
let opts = ~[optmulti("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "test")));
|
|
assert_eq!(opt_str(m, "test"), ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_long_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optmulti("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "test")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_long_no_arg() {
|
|
let args = ~[~"--test"];
|
|
let opts = ~[optmulti("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_long_multi() {
|
|
let args = ~[~"--test=20", ~"--test=30"];
|
|
let opts = ~[optmulti("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!(opt_present(m, "test"));
|
|
assert_eq!(opt_str(m, "test"), ~"20");
|
|
let pair = opt_strs(m, "test");
|
|
assert!(pair[0] == ~"20");
|
|
assert!(pair[1] == ~"30");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_short() {
|
|
let args = ~[~"-t", ~"20"];
|
|
let opts = ~[optmulti("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "t")));
|
|
assert_eq!(opt_str(m, "t"), ~"20");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_short_missing() {
|
|
let args = ~[~"blah"];
|
|
let opts = ~[optmulti("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => assert!(!opt_present(m, "t")),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_short_no_arg() {
|
|
let args = ~[~"-t"];
|
|
let opts = ~[optmulti("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, ArgumentMissing_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_optmulti_short_multi() {
|
|
let args = ~[~"-t", ~"20", ~"-t", ~"30"];
|
|
let opts = ~[optmulti("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!((opt_present(m, "t")));
|
|
assert_eq!(opt_str(m, "t"), ~"20");
|
|
let pair = opt_strs(m, "t");
|
|
assert!(pair[0] == ~"20");
|
|
assert!(pair[1] == ~"30");
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_unrecognized_option_long() {
|
|
let args = ~[~"--untest"];
|
|
let opts = ~[optmulti("t")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, UnrecognizedOption_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_unrecognized_option_short() {
|
|
let args = ~[~"-t"];
|
|
let opts = ~[optmulti("test")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Err(f) => check_fail_type(f, UnrecognizedOption_),
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_combined() {
|
|
let args =
|
|
~[~"prog", ~"free1", ~"-s", ~"20", ~"free2",
|
|
~"--flag", ~"--long=30", ~"-f", ~"-m", ~"40",
|
|
~"-m", ~"50", ~"-n", ~"-A B", ~"-n", ~"-60 70"];
|
|
let opts =
|
|
~[optopt("s"), optflag("flag"), reqopt("long"),
|
|
optflag("f"), optmulti("m"), optmulti("n"),
|
|
optopt("notpresent")];
|
|
let rs = getopts(args, opts);
|
|
match rs {
|
|
Ok(ref m) => {
|
|
assert!(m.free[0] == ~"prog");
|
|
assert!(m.free[1] == ~"free1");
|
|
assert_eq!(opt_str(m, "s"), ~"20");
|
|
assert!(m.free[2] == ~"free2");
|
|
assert!((opt_present(m, "flag")));
|
|
assert_eq!(opt_str(m, "long"), ~"30");
|
|
assert!((opt_present(m, "f")));
|
|
let pair = opt_strs(m, "m");
|
|
assert!(pair[0] == ~"40");
|
|
assert!(pair[1] == ~"50");
|
|
let pair = opt_strs(m, "n");
|
|
assert!(pair[0] == ~"-A B");
|
|
assert!(pair[1] == ~"-60 70");
|
|
assert!((!opt_present(m, "notpresent")));
|
|
}
|
|
_ => fail!()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_multi() {
|
|
let args = ~[~"-e", ~"foo", ~"--encrypt", ~"foo"];
|
|
let opts = ~[optopt("e"), optopt("encrypt"), optopt("f")];
|
|
let matches = &match getopts(args, opts) {
|
|
result::Ok(m) => m,
|
|
result::Err(_) => fail!()
|
|
};
|
|
assert!(opts_present(matches, [~"e"]));
|
|
assert!(opts_present(matches, [~"encrypt"]));
|
|
assert!(opts_present(matches, [~"encrypt", ~"e"]));
|
|
assert!(opts_present(matches, [~"e", ~"encrypt"]));
|
|
assert!(!opts_present(matches, [~"f"]));
|
|
assert!(!opts_present(matches, [~"thing"]));
|
|
assert!(!opts_present(matches, []));
|
|
|
|
assert_eq!(opts_str(matches, [~"e"]), ~"foo");
|
|
assert_eq!(opts_str(matches, [~"encrypt"]), ~"foo");
|
|
assert_eq!(opts_str(matches, [~"e", ~"encrypt"]), ~"foo");
|
|
assert_eq!(opts_str(matches, [~"encrypt", ~"e"]), ~"foo");
|
|
}
|
|
|
|
#[test]
|
|
fn test_nospace() {
|
|
let args = ~[~"-Lfoo", ~"-M."];
|
|
let opts = ~[optmulti("L"), optmulti("M")];
|
|
let matches = &match getopts(args, opts) {
|
|
result::Ok(m) => m,
|
|
result::Err(_) => fail!()
|
|
};
|
|
assert!(opts_present(matches, [~"L"]));
|
|
assert_eq!(opts_str(matches, [~"L"]), ~"foo");
|
|
assert!(opts_present(matches, [~"M"]));
|
|
assert_eq!(opts_str(matches, [~"M"]), ~".");
|
|
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_reqopt() {
|
|
let opt = groups::reqopt("b", "banana", "some bananas", "VAL");
|
|
assert!(opt == OptGroup { short_name: ~"b",
|
|
long_name: ~"banana",
|
|
hint: ~"VAL",
|
|
desc: ~"some bananas",
|
|
hasarg: Yes,
|
|
occur: Req })
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_optopt() {
|
|
let opt = groups::optopt("a", "apple", "some apples", "VAL");
|
|
assert!(opt == OptGroup { short_name: ~"a",
|
|
long_name: ~"apple",
|
|
hint: ~"VAL",
|
|
desc: ~"some apples",
|
|
hasarg: Yes,
|
|
occur: Optional })
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_optflag() {
|
|
let opt = groups::optflag("k", "kiwi", "some kiwis");
|
|
assert!(opt == OptGroup { short_name: ~"k",
|
|
long_name: ~"kiwi",
|
|
hint: ~"",
|
|
desc: ~"some kiwis",
|
|
hasarg: No,
|
|
occur: Optional })
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_optflagopt() {
|
|
let opt = groups::optflagopt("p", "pineapple", "some pineapples", "VAL");
|
|
assert!(opt == OptGroup { short_name: ~"p",
|
|
long_name: ~"pineapple",
|
|
hint: ~"VAL",
|
|
desc: ~"some pineapples",
|
|
hasarg: Maybe,
|
|
occur: Optional })
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_optmulti() {
|
|
let opt = groups::optmulti("l", "lime", "some limes", "VAL");
|
|
assert!(opt == OptGroup { short_name: ~"l",
|
|
long_name: ~"lime",
|
|
hint: ~"VAL",
|
|
desc: ~"some limes",
|
|
hasarg: Yes,
|
|
occur: Multi })
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_long_to_short() {
|
|
let short = ~[reqopt("b"), reqopt("banana")];
|
|
let verbose = groups::reqopt("b", "banana", "some bananas", "VAL");
|
|
|
|
assert_eq!(groups::long_to_short(&verbose), short);
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_getopts() {
|
|
let short = ~[
|
|
reqopt("b"), reqopt("banana"),
|
|
optopt("a"), optopt("apple"),
|
|
optflag("k"), optflagopt("kiwi"),
|
|
optflagopt("p"),
|
|
optmulti("l")
|
|
];
|
|
|
|
let verbose = ~[
|
|
groups::reqopt("b", "banana", "Desc", "VAL"),
|
|
groups::optopt("a", "apple", "Desc", "VAL"),
|
|
groups::optflag("k", "kiwi", "Desc"),
|
|
groups::optflagopt("p", "", "Desc", "VAL"),
|
|
groups::optmulti("l", "", "Desc", "VAL"),
|
|
];
|
|
|
|
let sample_args = ~[~"-k", ~"15", ~"--apple", ~"1", ~"k",
|
|
~"-p", ~"16", ~"l", ~"35"];
|
|
|
|
// FIXME #4681: sort options here?
|
|
assert!(getopts(sample_args, short)
|
|
== groups::getopts(sample_args, verbose));
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_usage() {
|
|
let optgroups = ~[
|
|
groups::reqopt("b", "banana", "Desc", "VAL"),
|
|
groups::optopt("a", "012345678901234567890123456789",
|
|
"Desc", "VAL"),
|
|
groups::optflag("k", "kiwi", "Desc"),
|
|
groups::optflagopt("p", "", "Desc", "VAL"),
|
|
groups::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
|
|
|
|
";
|
|
|
|
let generated_usage = groups::usage("Usage: fruits", optgroups);
|
|
|
|
debug!("expected: <<%s>>", expected);
|
|
debug!("generated: <<%s>>", generated_usage);
|
|
assert_eq!(generated_usage, expected);
|
|
}
|
|
|
|
#[test]
|
|
fn test_groups_usage_description_wrapping() {
|
|
// indentation should be 24 spaces
|
|
// lines wrap after 78: or rather descriptions wrap after 54
|
|
|
|
let optgroups = ~[
|
|
groups::optflag("k", "kiwi",
|
|
"This is a long description which won't be wrapped..+.."), // 54
|
|
groups::optflag("a", "apple",
|
|
"This is a long description which _will_ be wrapped..+.."), // 55
|
|
];
|
|
|
|
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..+..
|
|
|
|
";
|
|
|
|
let usage = groups::usage("Usage: fruits", optgroups);
|
|
|
|
debug!("expected: <<%s>>", expected);
|
|
debug!("generated: <<%s>>", usage);
|
|
assert!(usage == expected)
|
|
}
|
|
}
|