README

simple, dependency-free, uncomplicated shell scripting command class

[TOC]

Installing

composer require treehousetim/command

Usage

Simple command with argument

<?php

$command = new \treehousetim\command\command();
$command
	->command( 'ls' )
	->arg( '-lah' );

echo $command->getExecutableString();

// output:
// ls '-lah'
?>

Simple command that is piped

Notice the use of the factory method here to make code pretty.

<?php

echo \treehousetim\command\command::factory()
->command( 'ls' )
	->arg( '-lah' )
->pipeCommand(
	command::factory()
		->command( 'more' )
	)
->getExecutableString();

// output:
// ls '-lah' | more

Advanced Usage

treehousetim/command supports sub commands, combining stderr and stdout and output redirection to a file.

<?php

use \treehousetim\command\command;

$connection = 'user@example.com';
$loginPath = 'mylogin';
$db = 'my_database';
$tables = ['table1', 'table2'];
$where = 'id > 1200';

echo command::factory()
	->command( 'ssh' )
		->arg( $connection )
	->subCommand(
		command::factory()
			->command( '/usr/bin/mysqldump' )
			->arg( '--login-path=' . $loginPath )
			->arg( '--skip-add-drop-table' )
			->arg( '--no-create-info' )
			->arg( $db )
			->arg( implode( ',', $tables ) )
			->arg( '--where=' . $where )
			->stdoutStderrCombine()
		)
	->stdoutStderrCombine()
	->outputFile( '/path/to/file.sql' )
	->getExecutableString();

// output
// ssh 'user@example.com' "/usr/bin/mysqldump '--login-path=mylogin' '--skip-add-drop-table' '--no-create-info' 'my_database' 'table1,table2' '--where=id > 1200' 2>&1" 2>&1 > /path/to/file.sql


// minor difference: outputAppendFile - uses >> instead of >
echo command::factory()
	->command( 'ssh' )
		->arg( $connection )
	->subCommand(
		command::factory()
			->command( '/usr/bin/mysqldump' )
			->arg( '--login-path=' . $loginPath )
			->arg( '--skip-add-drop-table' )
			->arg( '--no-create-info' )
			->arg( $db )
			->arg( implode( ',', $tables ) )
			->arg( '--where=' . $where )
			->stdoutStderrCombine()
		)
	->stdoutStderrCombine()
	->outputAppendFile( '/path/to/file.sql' )
	->getExecutableString();

// output
// ssh 'user@example.com' "/usr/bin/mysqldump '--login-path=mylogin' '--skip-add-drop-table' '--no-create-info' 'my_database' 'table1,table2' '--where=id > 1200' 2>&1" 2>&1 >> /path/to/file.sql

Executing your command

Simply call $command->exec(); to execute your command.

Each time ->exec(); is called, an entry in the $command->execResults array is created.

$command->execResults array

The format of $command->execResults[] is as follows:

[
	'content' => $content,
	'status' => $returnStatus,
	'command' => $command
];

If all you want is a list of commands that have been executed, without the other array entries you may use $command->commandLog[].

Command log

echo $command->commandLog[0];

The output from your command is returned from the exec() method.

Logging

Command executions may be logged. To set up logging, pass any \Psr\Log\LoggerInterface object to the constructor or the factory method on \treehousetim\command\command to log executions.

Example using Monolog:

<?php

use \treehousetim\command\command;

$log = new \Monolog\Logger( 'My Example Program' );
$log->pushHandler( new StreamHandler( './example.log', \Monolog\Logger::DEBUG ) );

$command = command::factory( $log )
	->command( 'ls' )
	->arg( '-lah' )
	->exec();

$output = $command->exec();

echo $command->commandLog[0];
echo PHP_EOL;
echo $output

?>

Testing the codebase

If you have cloned this repo, you can run the tests.

Run composer install to install PHPUnit and Monolog.

1. composer install
2. ./vendor/bin/phpunit test