729060dbb9
`Times::times` was always a second-class loop because it did not support the `break` and `continue` operations. Its playful appeal was then lost after `do` was disabled for closures. It's time to let this one go.
1641 lines
48 KiB
Rust
1641 lines
48 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
|
||
// file at the top-level directory of this distribution and at
|
||
// http://rust-lang.org/COPYRIGHT.
|
||
//
|
||
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
// option. This file may not be copied, modified, or distributed
|
||
// except according to those terms.
|
||
|
||
//! Simple getopt alternative.
|
||
//!
|
||
//! Construct a vector of options, either by using `reqopt`, `optopt`, and `optflag`
|
||
//! or by building them from components yourself, and pass them to `getopts`,
|
||
//! along with a vector of actual arguments (not including `argv[0]`). You'll
|
||
//! either get a failure code back, or a match. You'll have to verify whether
|
||
//! the amount of 'free' arguments in the match is what you expect. Use `opt_*`
|
||
//! accessors to get argument values out of the matches object.
|
||
//!
|
||
//! Single-character options are expected to appear on the command line with a
|
||
//! single preceding dash; multiple-character options are expected to be
|
||
//! proceeded by two dashes. Options that expect an argument accept their
|
||
//! argument following either a space or an equals sign. Single-character
|
||
//! options don't require the space.
|
||
//!
|
||
//! # Example
|
||
//!
|
||
//! The following example shows simple command line parsing for an application
|
||
//! that requires an input file to be specified, accepts an optional output
|
||
//! file name following `-o`, and accepts both `-h` and `--help` as optional flags.
|
||
//!
|
||
//! ~~~{.rust}
|
||
//! extern mod extra;
|
||
//! use extra::getopts::{optopt,optflag,getopts,Opt};
|
||
//! use std::os;
|
||
//!
|
||
//! fn do_work(inp: &str, out: Option<~str>) {
|
||
//! println!("{}", inp);
|
||
//! match out {
|
||
//! Some(x) => println!("{}", x),
|
||
//! None => println!("No Output"),
|
||
//! }
|
||
//! }
|
||
//!
|
||
//! fn print_usage(program: &str, _opts: &[Opt]) {
|
||
//! println!("Usage: {} [options]", program);
|
||
//! println!("-o\t\tOutput");
|
||
//! println!("-h --help\tUsage");
|
||
//! }
|
||
//!
|
||
//! fn main() {
|
||
//! let args = os::args();
|
||
//!
|
||
//! let program = args[0].clone();
|
||
//!
|
||
//! let opts = ~[
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//! optopt("o"),
|
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//! optflag("h"),
|
||
//! 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!(f.to_err_msg()) }
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||
//! };
|
||
//! if matches.opt_present("h") || matches.opt_present("help") {
|
||
//! print_usage(program, opts);
|
||
//! return;
|
||
//! }
|
||
//! let output = matches.opt_str("o");
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||
//! let input: &str = if !matches.free.is_empty() {
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||
//! matches.free[0].clone()
|
||
//! } else {
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||
//! print_usage(program, opts);
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||
//! return;
|
||
//! };
|
||
//! do_work(input, output);
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||
//! }
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||
//! ~~~
|
||
|
||
use std::cmp::Eq;
|
||
use std::result::{Err, Ok};
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||
use std::result;
|
||
use std::option::{Some, None};
|
||
use std::vec;
|
||
|
||
/// Name of an option. Either a string or a single char.
|
||
#[deriving(Clone, Eq)]
|
||
#[allow(missing_doc)]
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pub enum Name {
|
||
Long(~str),
|
||
Short(char),
|
||
}
|
||
|
||
/// Describes whether an option has an argument.
|
||
#[deriving(Clone, Eq)]
|
||
#[allow(missing_doc)]
|
||
pub enum HasArg {
|
||
Yes,
|
||
No,
|
||
Maybe,
|
||
}
|
||
|
||
/// Describes how often an option may occur.
|
||
#[deriving(Clone, Eq)]
|
||
#[allow(missing_doc)]
|
||
pub enum Occur {
|
||
Req,
|
||
Optional,
|
||
Multi,
|
||
}
|
||
|
||
/// A description of a possible option.
|
||
#[deriving(Clone, Eq)]
|
||
pub struct Opt {
|
||
/// Name of the option
|
||
name: Name,
|
||
/// Whether it has an argument
|
||
hasarg: HasArg,
|
||
/// How often it can occur
|
||
occur: Occur,
|
||
/// Which options it aliases
|
||
priv aliases: ~[Opt],
|
||
}
|
||
|
||
/// Describes wether an option is given at all or has a value.
|
||
#[deriving(Clone, Eq)]
|
||
enum Optval {
|
||
Val(~str),
|
||
Given,
|
||
}
|
||
|
||
/// The result of checking command line arguments. Contains a vector
|
||
/// of matches and a vector of free strings.
|
||
#[deriving(Clone, Eq)]
|
||
pub struct Matches {
|
||
/// Options that matched
|
||
priv opts: ~[Opt],
|
||
/// Values of the Options that matched
|
||
priv vals: ~[~[Optval]],
|
||
/// Free string fragments
|
||
free: ~[~str]
|
||
}
|
||
|
||
/// The type returned when the command line does not conform to the
|
||
/// expected format. Call the `to_err_msg` method to retrieve the
|
||
/// error as a string.
|
||
#[deriving(Clone, Eq, ToStr)]
|
||
#[allow(missing_doc)]
|
||
pub enum Fail_ {
|
||
ArgumentMissing(~str),
|
||
UnrecognizedOption(~str),
|
||
OptionMissing(~str),
|
||
OptionDuplicated(~str),
|
||
UnexpectedArgument(~str),
|
||
}
|
||
|
||
/// The type of failure that occurred.
|
||
#[deriving(Eq)]
|
||
#[allow(missing_doc)]
|
||
pub enum FailType {
|
||
ArgumentMissing_,
|
||
UnrecognizedOption_,
|
||
OptionMissing_,
|
||
OptionDuplicated_,
|
||
UnexpectedArgument_,
|
||
}
|
||
|
||
/// The result of parsing a command line with a set of options.
|
||
pub type Result = result::Result<Matches, Fail_>;
|
||
|
||
impl Name {
|
||
fn from_str(nm: &str) -> Name {
|
||
if nm.len() == 1u {
|
||
Short(nm.char_at(0u))
|
||
} else {
|
||
Long(nm.to_owned())
|
||
}
|
||
}
|
||
|
||
fn to_str(&self) -> ~str {
|
||
match *self {
|
||
Short(ch) => ch.to_str(),
|
||
Long(ref s) => s.to_owned()
|
||
}
|
||
}
|
||
}
|
||
|
||
impl Matches {
|
||
fn opt_vals(&self, nm: &str) -> ~[Optval] {
|
||
match find_opt(self.opts, Name::from_str(nm)) {
|
||
Some(id) => self.vals[id].clone(),
|
||
None => fail!("No option '{}' defined", nm)
|
||
}
|
||
}
|
||
|
||
fn opt_val(&self, nm: &str) -> Option<Optval> {
|
||
let vals = self.opt_vals(nm);
|
||
if vals.is_empty() {
|
||
None
|
||
} else {
|
||
Some(vals[0].clone())
|
||
}
|
||
}
|
||
|
||
/// Returns true if an option was matched.
|
||
pub fn opt_present(&self, nm: &str) -> bool {
|
||
!self.opt_vals(nm).is_empty()
|
||
}
|
||
|
||
/// Returns the number of times an option was matched.
|
||
pub fn opt_count(&self, nm: &str) -> uint {
|
||
self.opt_vals(nm).len()
|
||
}
|
||
|
||
/// Returns true if any of several options were matched.
|
||
pub fn opts_present(&self, names: &[~str]) -> bool {
|
||
for nm in names.iter() {
|
||
match find_opt(self.opts, Name::from_str(*nm)) {
|
||
Some(id) if !self.vals[id].is_empty() => return true,
|
||
_ => (),
|
||
};
|
||
}
|
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false
|
||
}
|
||
|
||
/// Returns the string argument supplied to one of several matching options or `None`.
|
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pub fn opts_str(&self, names: &[~str]) -> Option<~str> {
|
||
for nm in names.iter() {
|
||
match self.opt_val(*nm) {
|
||
Some(Val(ref s)) => return Some(s.clone()),
|
||
_ => ()
|
||
}
|
||
}
|
||
None
|
||
}
|
||
|
||
/// Returns a vector of the arguments provided to all matches of the given
|
||
/// option.
|
||
///
|
||
/// Used when an option accepts multiple values.
|
||
pub fn opt_strs(&self, nm: &str) -> ~[~str] {
|
||
let mut acc: ~[~str] = ~[];
|
||
let r = self.opt_vals(nm);
|
||
for v in r.iter() {
|
||
match *v {
|
||
Val(ref s) => acc.push((*s).clone()),
|
||
_ => ()
|
||
}
|
||
}
|
||
acc
|
||
}
|
||
|
||
/// Returns the string argument supplied to a matching option or `None`.
|
||
pub fn opt_str(&self, nm: &str) -> Option<~str> {
|
||
let vals = self.opt_vals(nm);
|
||
if vals.is_empty() {
|
||
return None::<~str>;
|
||
}
|
||
match vals[0] {
|
||
Val(ref s) => Some((*s).clone()),
|
||
_ => None
|
||
}
|
||
}
|
||
|
||
|
||
/// Returns the matching string, a default, or none.
|
||
///
|
||
/// Returns none if the option was not present, `def` if the option was
|
||
/// present but no argument was provided, and the argument if the option was
|
||
/// present and an argument was provided.
|
||
pub fn opt_default(&self, nm: &str, def: &str) -> Option<~str> {
|
||
let vals = self.opt_vals(nm);
|
||
if vals.is_empty() { return None; }
|
||
match vals[0] {
|
||
Val(ref s) => Some((*s).clone()),
|
||
_ => Some(def.to_owned())
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
fn is_arg(arg: &str) -> bool {
|
||
arg.len() > 1 && arg[0] == '-' as u8
|
||
}
|
||
|
||
fn find_opt(opts: &[Opt], nm: Name) -> Option<uint> {
|
||
// Search main options.
|
||
let pos = opts.iter().position(|opt| opt.name == nm);
|
||
if pos.is_some() {
|
||
return pos
|
||
}
|
||
|
||
// Search in aliases.
|
||
for candidate in opts.iter() {
|
||
if candidate.aliases.iter().position(|opt| opt.name == nm).is_some() {
|
||
return opts.iter().position(|opt| opt.name == candidate.name);
|
||
}
|
||
}
|
||
|
||
None
|
||
}
|
||
|
||
/// Create an option that is required and takes an argument.
|
||
pub fn reqopt(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: Yes,
|
||
occur: Req,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
/// Create an option that is optional and takes an argument.
|
||
pub fn optopt(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: Yes,
|
||
occur: Optional,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
/// Create an option that is optional and does not take an argument.
|
||
pub fn optflag(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: No,
|
||
occur: Optional,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
/// Create an option that is optional, does not take an argument,
|
||
/// and may occur multiple times.
|
||
pub fn optflagmulti(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: No,
|
||
occur: Multi,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
/// Create an option that is optional and takes an optional argument.
|
||
pub fn optflagopt(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: Maybe,
|
||
occur: Optional,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
/// Create an option that is optional, takes an argument, and may occur
|
||
/// multiple times.
|
||
pub fn optmulti(name: &str) -> Opt {
|
||
Opt {
|
||
name: Name::from_str(name),
|
||
hasarg: Yes,
|
||
occur: Multi,
|
||
aliases: ~[]
|
||
}
|
||
}
|
||
|
||
impl Fail_ {
|
||
/// Convert a `Fail_` enum into an error string.
|
||
pub fn to_err_msg(self) -> ~str {
|
||
match self {
|
||
ArgumentMissing(ref nm) => {
|
||
format!("Argument to option '{}' missing.", *nm)
|
||
}
|
||
UnrecognizedOption(ref nm) => {
|
||
format!("Unrecognized option: '{}'.", *nm)
|
||
}
|
||
OptionMissing(ref nm) => {
|
||
format!("Required option '{}' missing.", *nm)
|
||
}
|
||
OptionDuplicated(ref nm) => {
|
||
format!("Option '{}' given more than once.", *nm)
|
||
}
|
||
UnexpectedArgument(ref nm) => {
|
||
format!("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 `to_err_msg` to get an error message.
|
||
pub fn getopts(args: &[~str], opts: &[Opt]) -> Result {
|
||
let n_opts = opts.len();
|
||
|
||
fn f(_x: uint) -> ~[Optval] { return ~[]; }
|
||
|
||
let mut vals = vec::from_fn(n_opts, f);
|
||
let mut free: ~[~str] = ~[];
|
||
let l = args.len();
|
||
let mut i = 0;
|
||
while i < l {
|
||
let cur = args[i].clone();
|
||
let curlen = cur.len();
|
||
if !is_arg(cur) {
|
||
free.push(cur);
|
||
} else if cur == ~"--" {
|
||
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[1] == '-' as u8 {
|
||
let tail = cur.slice(2, curlen);
|
||
let tail_eq: ~[&str] = tail.split('=').collect();
|
||
if tail_eq.len() <= 1 {
|
||
names = ~[Long(tail.to_owned())];
|
||
} else {
|
||
names =
|
||
~[Long(tail_eq[0].to_owned())];
|
||
i_arg = Some(tail_eq[1].to_owned());
|
||
}
|
||
} else {
|
||
let mut j = 1;
|
||
let mut last_valid_opt_id = None;
|
||
names = ~[];
|
||
while j < curlen {
|
||
let range = cur.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, opt.clone()) {
|
||
Some(id) => last_valid_opt_id = Some(id),
|
||
None => {
|
||
let arg_follows =
|
||
last_valid_opt_id.is_some() &&
|
||
match opts[last_valid_opt_id.unwrap()]
|
||
.hasarg {
|
||
|
||
Yes | Maybe => true,
|
||
No => false
|
||
};
|
||
if arg_follows && j < curlen {
|
||
i_arg = Some(cur.slice(j, curlen).to_owned());
|
||
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, (*nm).clone()) {
|
||
Some(id) => id,
|
||
None => return Err(UnrecognizedOption(nm.to_str()))
|
||
};
|
||
match opts[optid].hasarg {
|
||
No => {
|
||
if !i_arg.is_none() {
|
||
return Err(UnexpectedArgument(nm.to_str()));
|
||
}
|
||
vals[optid].push(Given);
|
||
}
|
||
Maybe => {
|
||
if !i_arg.is_none() {
|
||
vals[optid].push(Val((i_arg.clone()).unwrap()));
|
||
} else if name_pos < names.len() ||
|
||
i + 1 == l || is_arg(args[i + 1]) {
|
||
vals[optid].push(Given);
|
||
} else { i += 1; vals[optid].push(Val(args[i].clone())); }
|
||
}
|
||
Yes => {
|
||
if !i_arg.is_none() {
|
||
vals[optid].push(Val(i_arg.clone().unwrap()));
|
||
} else if i + 1 == l {
|
||
return Err(ArgumentMissing(nm.to_str()));
|
||
} else { i += 1; vals[optid].push(Val(args[i].clone())); }
|
||
}
|
||
}
|
||
}
|
||
}
|
||
i += 1;
|
||
}
|
||
i = 0u;
|
||
while i < n_opts {
|
||
let n = vals[i].len();
|
||
let occ = opts[i].occur;
|
||
if occ == Req {
|
||
if n == 0 {
|
||
return Err(OptionMissing(opts[i].name.to_str()));
|
||
}
|
||
}
|
||
if occ != Multi {
|
||
if n > 1 {
|
||
return Err(OptionDuplicated(opts[i].name.to_str()));
|
||
}
|
||
}
|
||
i += 1;
|
||
}
|
||
Ok(Matches {
|
||
opts: opts.to_owned(),
|
||
vals: vals,
|
||
free: free
|
||
})
|
||
}
|
||
|
||
/// A module which provides a way to specify descriptions and
|
||
/// groups of short and long option names, together.
|
||
pub mod groups {
|
||
use getopts::{HasArg, Long, Maybe, Multi, No, Occur, Opt, Optional, Req};
|
||
use getopts::{Short, Yes};
|
||
|
||
/// One group of options, e.g., both -h and --help, along with
|
||
/// their shared description and properties.
|
||
#[deriving(Clone, Eq)]
|
||
pub struct OptGroup {
|
||
/// Short Name of the `OptGroup`
|
||
short_name: ~str,
|
||
/// Long Name of the `OptGroup`
|
||
long_name: ~str,
|
||
/// Hint
|
||
hint: ~str,
|
||
/// Description
|
||
desc: ~str,
|
||
/// Whether it has an argument
|
||
hasarg: HasArg,
|
||
/// How often it can occur
|
||
occur: Occur
|
||
}
|
||
|
||
impl OptGroup {
|
||
/// Translate OptGroup into Opt.
|
||
/// (Both short and long names correspond to different Opts).
|
||
pub fn long_to_short(&self) -> Opt {
|
||
let OptGroup {
|
||
short_name: short_name,
|
||
long_name: long_name,
|
||
hasarg: hasarg,
|
||
occur: occur,
|
||
..
|
||
} = (*self).clone();
|
||
|
||
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,
|
||
aliases: ~[]
|
||
},
|
||
(1,0) => Opt {
|
||
name: Short(short_name.char_at(0)),
|
||
hasarg: hasarg,
|
||
occur: occur,
|
||
aliases: ~[]
|
||
},
|
||
(1,_) => Opt {
|
||
name: Long((long_name)),
|
||
hasarg: hasarg,
|
||
occur: occur,
|
||
aliases: ~[
|
||
Opt {
|
||
name: Short(short_name.char_at(0)),
|
||
hasarg: hasarg,
|
||
occur: occur,
|
||
aliases: ~[]
|
||
}
|
||
]
|
||
},
|
||
(_,_) => fail!("something is wrong with the long-form opt")
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Create a long option that is required and takes an argument.
|
||
pub fn reqopt(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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: hint.to_owned(),
|
||
desc: desc.to_owned(),
|
||
hasarg: Yes,
|
||
occur: Req
|
||
}
|
||
}
|
||
|
||
/// Create a long option that is optional and takes an argument.
|
||
pub fn optopt(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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: hint.to_owned(),
|
||
desc: desc.to_owned(),
|
||
hasarg: Yes,
|
||
occur: Optional
|
||
}
|
||
}
|
||
|
||
/// Create a long option that is optional and does not take an argument.
|
||
pub fn optflag(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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: ~"",
|
||
desc: desc.to_owned(),
|
||
hasarg: No,
|
||
occur: Optional
|
||
}
|
||
}
|
||
|
||
/// Create a long option that can occur more than once and does not
|
||
/// 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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: ~"",
|
||
desc: desc.to_owned(),
|
||
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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: hint.to_owned(),
|
||
desc: desc.to_owned(),
|
||
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_owned(),
|
||
long_name: long_name.to_owned(),
|
||
hint: hint.to_owned(),
|
||
desc: desc.to_owned(),
|
||
hasarg: Yes,
|
||
occur: Multi
|
||
}
|
||
}
|
||
|
||
/// Parse command line args with the provided long format options.
|
||
pub fn getopts(args: &[~str], opts: &[OptGroup]) -> ::getopts::Result {
|
||
::getopts::getopts(args, opts.map(|x| x.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 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);
|
||
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 should be graphemes not codepoints
|
||
// here we just need to indent the start of the description
|
||
let rowlen = row.char_len();
|
||
if rowlen < 24 {
|
||
for _ in range(0, 24 - rowlen) {
|
||
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 word in desc.words() {
|
||
desc_normalized_whitespace.push_str(word);
|
||
desc_normalized_whitespace.push_char(' ');
|
||
}
|
||
|
||
// FIXME: #5516 should be graphemes not codepoints
|
||
let mut desc_rows = ~[];
|
||
each_split_within(desc_normalized_whitespace, 54, |substr| {
|
||
desc_rows.push(substr.to_owned());
|
||
true
|
||
});
|
||
|
||
// FIXME: #5516 should be graphemes not codepoints
|
||
// wrapped description
|
||
row.push_str(desc_rows.connect(desc_sep));
|
||
|
||
row
|
||
});
|
||
|
||
format!("{}\n\nOptions:\n{}\n", brief, rows.collect::<~[~str]>().connect("\n"))
|
||
}
|
||
|
||
/// 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;
|
||
let slice: || = || { cont = it(ss.slice(slice_start, last_end)) };
|
||
|
||
// if the limit is larger than the string, lower it to save cycles
|
||
if lim >= fake_i {
|
||
lim = fake_i;
|
||
}
|
||
|
||
let machine: |(uint, char)| -> bool = |(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) => { slice(); slice_start = last_start; B }
|
||
(B, Ws, UnderLim) => { last_end = i; C }
|
||
(B, Ws, OverLim) => { last_end = i; slice(); A }
|
||
|
||
(C, Cr, UnderLim) => { last_start = i; B }
|
||
(C, Cr, OverLim) => { slice(); slice_start = i; last_start = i; last_end = i; B }
|
||
(C, Ws, OverLim) => { slice(); A }
|
||
(C, Ws, UnderLim) => { C }
|
||
};
|
||
|
||
cont
|
||
};
|
||
|
||
ss.char_indices().advance(|x| machine(x));
|
||
|
||
// Let the automaton 'run out' by supplying trailing whitespace
|
||
while cont && match state { B | C => true, A => false } {
|
||
machine((fake_i, ' '));
|
||
fake_i += 1;
|
||
}
|
||
return cont;
|
||
}
|
||
|
||
#[test]
|
||
fn test_split_within() {
|
||
fn t(s: &str, i: uint, u: &[~str]) {
|
||
let mut v = ~[];
|
||
each_split_within(s, i, |s| { v.push(s.to_owned()); true });
|
||
assert!(v.iter().zip(u.iter()).all(|(a,b)| a == b));
|
||
}
|
||
t("", 0, []);
|
||
t("", 15, []);
|
||
t("hello", 15, [~"hello"]);
|
||
t("\nMary had a little lamb\nLittle lamb\n", 15,
|
||
[~"Mary had a", ~"little lamb", ~"Little lamb"]);
|
||
t("\nMary had a little lamb\nLittle lamb\n", ::std::uint::MAX,
|
||
[~"Mary had a little lamb\nLittle lamb"]);
|
||
}
|
||
} // 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!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), ~"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!(m.opt_present("t"));
|
||
assert_eq!(m.opt_str("t").unwrap(), ~"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!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), ~"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!(!m.opt_present("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!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), ~"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!(!m.opt_present("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!(m.opt_present("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!(!m.opt_present("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!("{:?}", f.clone().to_err_msg());
|
||
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!(m.opt_present("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!(!m.opt_present("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!(m.opt_count("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!(m.opt_count("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!(m.opt_count("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!(m.opt_count("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!(m.opt_count("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!((m.opt_present("test")));
|
||
assert_eq!(m.opt_str("test").unwrap(), ~"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!(!m.opt_present("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!(m.opt_present("test"));
|
||
assert_eq!(m.opt_str("test").unwrap(), ~"20");
|
||
let pair = m.opt_strs("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!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), ~"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!(!m.opt_present("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!((m.opt_present("t")));
|
||
assert_eq!(m.opt_str("t").unwrap(), ~"20");
|
||
let pair = m.opt_strs("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!(m.opt_str("s").unwrap(), ~"20");
|
||
assert!(m.free[2] == ~"free2");
|
||
assert!((m.opt_present("flag")));
|
||
assert_eq!(m.opt_str("long").unwrap(), ~"30");
|
||
assert!((m.opt_present("f")));
|
||
let pair = m.opt_strs("m");
|
||
assert!(pair[0] == ~"40");
|
||
assert!(pair[1] == ~"50");
|
||
let pair = m.opt_strs("n");
|
||
assert!(pair[0] == ~"-A B");
|
||
assert!(pair[1] == ~"-60 70");
|
||
assert!((!m.opt_present("notpresent")));
|
||
}
|
||
_ => fail!()
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn test_multi() {
|
||
let opts = ~[optopt("e"), optopt("encrypt"), optopt("f")];
|
||
|
||
let args_single = ~[~"-e", ~"foo"];
|
||
let matches_single = &match getopts(args_single, opts) {
|
||
result::Ok(m) => m,
|
||
result::Err(_) => fail!()
|
||
};
|
||
assert!(matches_single.opts_present([~"e"]));
|
||
assert!(matches_single.opts_present([~"encrypt", ~"e"]));
|
||
assert!(matches_single.opts_present([~"e", ~"encrypt"]));
|
||
assert!(!matches_single.opts_present([~"encrypt"]));
|
||
assert!(!matches_single.opts_present([~"thing"]));
|
||
assert!(!matches_single.opts_present([]));
|
||
|
||
assert_eq!(matches_single.opts_str([~"e"]).unwrap(), ~"foo");
|
||
assert_eq!(matches_single.opts_str([~"e", ~"encrypt"]).unwrap(), ~"foo");
|
||
assert_eq!(matches_single.opts_str([~"encrypt", ~"e"]).unwrap(), ~"foo");
|
||
|
||
let args_both = ~[~"-e", ~"foo", ~"--encrypt", ~"foo"];
|
||
let matches_both = &match getopts(args_both, opts) {
|
||
result::Ok(m) => m,
|
||
result::Err(_) => fail!()
|
||
};
|
||
assert!(matches_both.opts_present([~"e"]));
|
||
assert!(matches_both.opts_present([~"encrypt"]));
|
||
assert!(matches_both.opts_present([~"encrypt", ~"e"]));
|
||
assert!(matches_both.opts_present([~"e", ~"encrypt"]));
|
||
assert!(!matches_both.opts_present([~"f"]));
|
||
assert!(!matches_both.opts_present([~"thing"]));
|
||
assert!(!matches_both.opts_present([]));
|
||
|
||
assert_eq!(matches_both.opts_str([~"e"]).unwrap(), ~"foo");
|
||
assert_eq!(matches_both.opts_str([~"encrypt"]).unwrap(), ~"foo");
|
||
assert_eq!(matches_both.opts_str([~"e", ~"encrypt"]).unwrap(), ~"foo");
|
||
assert_eq!(matches_both.opts_str([~"encrypt", ~"e"]).unwrap(), ~"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!(matches.opts_present([~"L"]));
|
||
assert_eq!(matches.opts_str([~"L"]).unwrap(), ~"foo");
|
||
assert!(matches.opts_present([~"M"]));
|
||
assert_eq!(matches.opts_str([~"M"]).unwrap(), ~".");
|
||
|
||
}
|
||
|
||
#[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 mut short = reqopt("banana");
|
||
short.aliases = ~[reqopt("b")];
|
||
let verbose = groups::reqopt("b", "banana", "some bananas", "VAL");
|
||
|
||
assert_eq!(verbose.long_to_short(), short);
|
||
}
|
||
|
||
#[test]
|
||
fn test_groups_getopts() {
|
||
let mut banana = reqopt("banana");
|
||
banana.aliases = ~[reqopt("b")];
|
||
let mut apple = optopt("apple");
|
||
apple.aliases = ~[optopt("a")];
|
||
let mut kiwi = optflag("kiwi");
|
||
kiwi.aliases = ~[optflag("k")];
|
||
let short = ~[
|
||
banana,
|
||
apple,
|
||
kiwi,
|
||
optflagopt("p"),
|
||
optmulti("l")
|
||
];
|
||
|
||
// short and verbose should always be in the same order. if they
|
||
// aren't the test will fail (and in mysterious ways)
|
||
|
||
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 = ~[~"--kiwi", ~"15", ~"--apple", ~"1", ~"k",
|
||
~"-p", ~"16", ~"l", ~"35"];
|
||
|
||
assert!(getopts(sample_args, short)
|
||
== groups::getopts(sample_args, verbose));
|
||
}
|
||
|
||
#[test]
|
||
fn test_groups_aliases_long_and_short() {
|
||
let opts = ~[
|
||
groups::optflagmulti("a", "apple", "Desc"),
|
||
];
|
||
|
||
let args = ~[~"-a", ~"--apple", ~"-a"];
|
||
|
||
let matches = groups::getopts(args, opts).unwrap();
|
||
assert_eq!(3, matches.opt_count("a"));
|
||
assert_eq!(3, matches.opt_count("apple"));
|
||
}
|
||
|
||
#[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: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", 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: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", usage);
|
||
assert!(usage == expected)
|
||
}
|
||
|
||
#[test]
|
||
fn test_groups_usage_description_multibyte_handling() {
|
||
let optgroups = ~[
|
||
groups::optflag("k", "k\u2013w\u2013",
|
||
"The word kiwi is normally spelled with two i's"),
|
||
groups::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.
|
||
";
|
||
|
||
let usage = groups::usage("Usage: fruits", optgroups);
|
||
|
||
debug!("expected: <<{}>>", expected);
|
||
debug!("generated: <<{}>>", usage);
|
||
assert!(usage == expected)
|
||
}
|
||
}
|