POSIX getopt(3) for Rust

Version 1.2.0 MIT Licensed

Features

1. GNU argument parsing rules. Options can be anywhere in command line before --
2. GNU -- extension. Everything after -- is not treated as options
3. Multiple options not requiring argument can be grouped together. -abc is the same as -a -b -c
4. Argument does not require space. -wfile is same as -w file
5. Zero dependencies
6. 47 unit tests

Usage

Create getopt instance

let g = getopt3::new(arguments, optstring)

arguments command line arguments as Vec\

optstring is a String containing the legitimate option characters. If such a character is followed by a colon, the option requires an argument.

Check for results

getopt structure has following members: 1. arguments : Vec \ command line arguments with options removed 2. optionsmap_ : HashMap map of recognized options. option -> haveargument 3. _options : HashMap options parsed. If option do not have argument, it is mapped to "" string, otherwise it is mapped to its argument as string.

Optional - Check if options are parsed correctly

You can run strictness check by calling validate(getopt) function.

Example usage

rust let g = getopt3::new(args, "ab:c"); if let Some(str) = g.options.get(&'b') { // handle b argument };