OptsLib

A very simple Options parser and command-line arguments handling library for PHP.

Table of Contents

• OptsLib
  • Table of Contents
  • Installation
  • Compiling from source
  • Usage
    • parseArgument()
    • getArguments()
  • Additional functionality
    • getRegex()
    • setRegex()
    • getArgsCache()
  • Changelog
  • License
  • Logo
  • Contributing

Installation

The library can be installed using ncc:

ncc install -p "nosial/libs.opts=latest@n64"

or by adding the following to your project.json file under the build.dependencies section:

{
  "name": "net.nosial.optslib",
  "version": "latest",
  "source_type": "remote",
  "source": "nosial/libs.opts=latest@n64"
}

If you don't have the n64 source configured you can add it by running the following command:

ncc source add --name n64 --type gitlab --host git.n64.cc

Compiling from source

The library can be compiled from source using ncc:

ncc build --config release

or by running the following command:

make release

Usage

The usage of this library is very simple, there are two functions that you can use to parse options.

parseArgument()

Can be used to parse a single argument string/array, this is useful for parsing command line arguments. The second argument is the maximum number of arguments that can be parsed, this is to prevent infinite loops.

<?php

    require_once('ncc');
    import('net.nosial.optslib', 'latest');
    
    $input = '--foo --bar="test" -y --username test';
    $parsed = \OptsLib\Parse::parseArgument($input);
    
    echo $parsed['foo']; // true
    echo $parsed['bar']; // "test"
    echo $parsed['y']; // true
    echo $parsed['username']; // "test"

getArguments()

This method is used to access the $argv array if it's not set, an empty array is returned.

<?php

    require_once('ncc');
    import('net.nosial.optslib', 'latest');
    
    $arguments = \OptsLib\Parse::getArguments();
    
    echo $arguments['output-file']; // "test.txt"
    echo $arguments['input-file']; // "test.txt"
    echo $arguments['log']; // "verbose"

Optionally, if you want arguments after a specific argument/option to be parsed, you can pass the argument name as the first argument.

This is ideal if you are using a command line tool that has a sub-command, for example:

$ mytool subcommand --foo --bar="test" -y --username test

In this case, you can pass the subcommand argument to the getArguments() method to parse the arguments after it.

<?php

    require_once('ncc');
    import('net.nosial.optslib', 'latest');
    
    $arguments = \OptsLib\Parse::getArguments('subcommand');
    
    echo $arguments['foo']; // true
    echo $arguments['bar']; // "test"
    echo $arguments['y']; // true
    echo $arguments['username']; // "test"

Additional functionality

OptsLib also provides some additional functionality that can be used to modify the way arguments are parsed.

getRegex()

This method is used to return the regex pattern used to parse the arguments, it can be used to parse arguments manually.

The default used is

/(?(?=-)-(?(?=-)-(?'bigflag'[^\\s=]+)|(?'smallflag'\\S))(?:\\s*=\\s*|\\s+)(?(?!-)(?(?=[\\\"\\'])((?<![\\\\])['\"])(?'string'(?:.(?!(?<![\\\\])\\3))*.?)\\3|(?'value'\\S+)))(?:\\s+)?|(?'unmatched'\\S+))/

setRegex()

This method is used to set the regex pattern used to parse the arguments, you can modify the default pattern to suit your needs.

<?php

    require_once('ncc');
    import('net.nosial.optslib', 'latest');
    
    \OptsLib\Parse::setRegex('/(?(?=-)-(?(?=-)-(?'bigflag'[^\\s=]+)|(?'smallflag'\\S))(?:\\s*=\\s*|\\s+)(?(?!-)(?(?=[\\\"\\'])((?<![\\\\])['\"])(?'string'(?:.(?!(?<![\\\\])\\3))*.?)\\3|(?'value'\\S+)))(?:\\s+)?|(?'unmatched'\\S+))/');

getArgsCache()

This method is used to return the arguments cache parsed from the global $argv variable, this can be used as a means of troubleshooting.

Changelog

For a list of changes, see the CHANGELOG.md file.

License

This library is licensed under the MIT license, see the LICENSE file for more information.

Logo

The logo was created by Boxicons and is licensed under the MIT license

Contributing

If you want to contribute to this project, you can do so by creating a merge request on the GitLab repository.