PHP Helpers: Command-line Functions

• Version: v1.1.6
• Date: May 25 2019
• Release notes
• GitHub repository

A collection of functions relating to the command-line

Installation

This library is installed via Composer. To install, use composer require pointybeard/helpers-functions-cli or add "pointybeard/helpers-functions-cli": "~1.1" to your composer.json file.

And run composer to update your dependencies:

$ curl -s http://getcomposer.org/installer | php
$ php composer.phar update

Requirements

This library makes use of the PHP Helpers: Command-line Input and Input Type Handlers, PHP Helpers: Flag Functions (pointybeard/helpers-functions-flags), PHP Helpers: Command-line Colour (pointybeard/helpers-cli-colours) and PHP Helpers: String Functions packages. They are installed automatically via composer.

To include all the PHP Helpers packages on your project, use composer require pointybeard/helpers or add "pointybeard/helpers": "~1" to your composer file.

Usage

This library is a collection convenience function for command-line tasks. They are included by the vendor autoloader automatically. The functions have a namespace of pointybeard\Helpers\Functions\Cli

The following functions are provided:

• can_invoke_bash() : bool
• is_su() : bool
• usage(string $name, Cli\Input\InputCollection $collection) : string
• manpage(string $name, string $version, string $description, Input\InputCollection $collection, $foregroundColour=Colour\Colour::FG_DEFAULT, $headingColour=Colour\Colour::FG_WHITE, array $additional=[]): string
• get_window_size(): array
• display_error_and_exit($message, $heading = 'Error', $background = Colour\Colour::BG_RED): void

Example usage:

<?php

declare(strict_types=1);
include __DIR__.'/vendor/autoload.php';

use pointybeard\Helpers\Cli\Input;
use pointybeard\Helpers\Cli\Colour\Colour;
use pointybeard\Helpers\Functions\Cli;

var_dump(Cli\can_invoke_bash());
// bool(true)

var_dump(Cli\is_su());
// bool(false)

var_dump(Cli\get_window_size());
// array(2) {
//   'cols' => string(3) "103"
//   'lines' => string(2) "68"
// }

echo Cli\manpage(
    'test',
    '1.0.1',
    'A simple test command with a really long description. This is an intentionally very long argument description so we can check that word wrapping is working correctly. It should wrap to the window',
    (new Input\InputCollection())
        ->append(
            Input\InputTypeFactory::build('Argument')
                ->name('action')
                ->flags(Input\AbstractInputType::FLAG_REQUIRED)
                ->description('The name of the action to perform. This is an intentionally very long argument description so we can check that word wrapping is working correctly')
        )
        ->append(
            Input\InputTypeFactory::build('IncrementingFlag')
                ->name('v')
                ->flags(Input\AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_TYPE_INCREMENTING)
                ->description('verbosity level. -v (errors only), -vv (warnings and errors), -vvv (everything).')
                ->validator(new Input\Validator(
                    function (Input\AbstractInputType $input, Input\AbstractInputHandler $context) {
                        // Make sure verbosity level never goes above 3
                        return min(3, (int) $context->find('v'));
                    }
                ))
        )
        ->append(
            Input\InputTypeFactory::build('Option')
                ->name('P')
                ->flags(Input\AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_OPTIONAL)
                ->description('Port to use for all connections.')
                ->default('3306')
        )
        ->append(
            Input\InputTypeFactory::build('LongOption')
                ->name('data')
                ->short('d')
                ->flags(Input\AbstractInputType::FLAG_OPTIONAL | Input\AbstractInputType::FLAG_VALUE_REQUIRED)
                ->description('Path to the input JSON data.')
        ),
    Colour::FG_GREEN,
    Colour::FG_WHITE,
    [
        'Examples' => 'php -f test.php -- import -vvv -d test.json',
    ]
).PHP_EOL;

// test 1.0.0, A simple test command with a really long description. This is an intentionally very long argument description so we can check that word wrapping is working correctly. It should wrap to the window
// Usage: test [OPTIONS]... ACTION...
//
// Arguments:
// ACTION              The name of the action to perform. This is an
//                     intentionally very long argument description so we can check
//                     that word wrapping is working correctly
//
// Options:
// -v                            verbosity level. -v (errors only), -vv
//                               (warnings and errors), -vvv (everything).
// -P                            Port to use for all connections.
// -d, --data=VALUE              Path to the input JSON data.
//
// Examples:
// php -f test.php -- import -vvv -d test.json

Cli\display_error_and_exit('Looks like something went wrong!', 'Fatal Error');
// Fatal Error
// Looks like something went wrong!

Support

If you believe you have found a bug, please report it using the GitHub issue tracker, or better yet, fork the library and submit a pull request.

Contributing

We encourage you to contribute to this project. Please check out the Contributing documentation for guidelines about how to get involved.

License

"PHP Helpers: Command-line Functions" is released under the MIT License.