MIF_E31222691/laravel/cli/command.php

112 lines
2.8 KiB
PHP

<?php namespace Laravel\CLI;
use Laravel\IoC;
use Laravel\Str;
use Laravel\Bundle;
class Command {
/**
* Run a CLI task with the given arguments.
*
* @param array $arguments
* @return void
*/
public static function run($arguments = array())
{
if ( ! isset($arguments[0]))
{
throw new \Exception("Whoops! You forgot to provide the task name.");
}
list($bundle, $task, $method) = static::parse($arguments[0]);
// If the task exists within a bundle, we will start the bundle so that
// any dependencies can be registered in the application IoC container.
// If the task is registered in the container, it will be resolved
// via the container instead of by this class.
if (Bundle::exists($bundle)) Bundle::start($bundle);
// Once the bundle has been started, we will attempt to resolve the
// task instance. Tasks may be resolved through the file system or
// through the application IoC container.
if (is_null($task = static::resolve($bundle, $task)))
{
throw new \Exception("Sorry, I can't find that task.");
}
$task->$method(array_slice($arguments, 1));
}
/**
* Parse the task name to extract the bundle, task, and method.
*
* @param string $task
* @return array
*/
protected static function parse($task)
{
list($bundle, $task) = Bundle::parse($task);
// Extract the task method from the task string. Methods are called
// on tasks by separating the task and method with a single colon.
// If no task is specified, "run" is used as the default.
if (str_contains($task, ':'))
{
list($task, $method) = explode(':', $task);
}
else
{
$method = 'run';
}
return array($bundle, $task, $method);
}
/**
* Resolve an instance of the given task name.
*
* @param string $bundle
* @param string $task
* @return object
*/
public static function resolve($bundle, $task)
{
$identifier = Bundle::identifier($bundle, $task);
// First we'll check to see if the task has been registered in the
// application IoC container. This allows all dependencies to be
// injected into tasks for more testability.
if (IoC::registered("task: {$identifier}"))
{
return IoC::resolve("task: {$identifier}");
}
// If the task file exists, we'll format the bundle and task name
// into a task class name and resolve an instance of the so that
// the requested method may be executed.
if (file_exists($path = Bundle::path($bundle).'tasks/'.$task.EXT))
{
require $path;
$task = static::format($bundle, $task);
return new $task;
}
}
/**
* Format a bundle and task into a task class name.
*
* @param string $bundle
* @param string $task
* @return string
*/
protected static function format($bundle, $task)
{
$prefix = Bundle::class_prefix($bundle);
return '\\'.$prefix.Str::clasify($task).'_Task';
}
}