MIF_E31222691/laravel/bundle.php

296 lines
6.9 KiB
PHP

<?php namespace Laravel; defined('APP_PATH') or die('No direct script access.');
class Bundle {
/**
* All of the application's bundles.
*
* @var array
*/
protected static $bundles;
/**
* A cache of the parsed bundle elements.
*
* @var array
*/
protected static $elements = array();
/**
* All of the bundles that have been started.
*
* @var array
*/
protected static $started = array();
/**
* Load a bundle by running it's start-up script.
*
* If the bundle has already been started, no action will be taken.
*
* @param string $bundle
* @return void
*/
public static function start($bundle)
{
if (static::started($bundle)) return;
if ($bundle !== DEFAULT_BUNDLE and ! static::exists($bundle))
{
throw new \Exception("Bundle [$bundle] has not been installed.");
}
// Each bundle may have a "start" script which is responsible for preparing
// the bundle for use by the application. The start script may register any
// classes the bundle uses with the auto-loader, or perhaps will start any
// dependent bundles so that they are available.
if (file_exists($path = static::path($bundle).'bundle'.EXT))
{
require_once $path;
}
// Each bundle may also have a "routes" file which is responsible for
// registering the bundle's routes. This is kept separate from the
// start script for reverse routing efficiency purposes.
static::routes($bundle);
static::$started[] = strtolower($bundle);
}
/**
* Load the "routes" file for a given bundle.
*
* @param string $bundle
* @return void
*/
public static function routes($bundle)
{
if (file_exists($path = static::path($bundle).'routes'.EXT))
{
require_once $path;
}
}
/**
* Determine if the given bundle is "routable".
*
* A bundle is considered routable if it has a controller directory or a routes file.
*
* @param string $bundle
* @return bool
*/
public static function routable($bundle)
{
$path = static::path($bundle);
return is_dir($path.'controllers/') or file_exists($path.'routes'.EXT);
}
/**
* Deteremine if a bundle exists within the bundles directory.
*
* @param string $bundle
* @return bool
*/
public static function exists($bundle)
{
return in_array(strtolower($bundle), static::all());
}
/**
* Determine if a given bundle has been started for the request.
*
* @param string $bundle
* @return void
*/
public static function started($bundle)
{
return in_array(strtolower($bundle), static::$started);
}
/**
* Get the identifier prefix for the bundle.
*
* @param string $bundle
* @return string
*/
public static function prefix($bundle)
{
return ($bundle !== DEFAULT_BUNDLE) ? "{$bundle}::" : '';
}
/**
* Get the class prefix for a given bundle.
*
* @param string $bundle
* @return string
*/
public static function class_prefix($bundle)
{
return ($bundle !== DEFAULT_BUNDLE) ? Str::classify($bundle).'_' : '';
}
/**
* Return the root bundle path for a given bundle.
*
* <code>
* // Returns the bundle path for the "admin" bundle
* $path = Bundle::path('admin');
*
* // Returns the APP_PATH constant as the default bundle
* $path = Bundle::path('application');
* </code>
*
* @param string $bundle
* @return string
*/
public static function path($bundle)
{
return ($bundle != DEFAULT_BUNDLE) ? BUNDLE_PATH.strtolower($bundle).DS : APP_PATH;
}
/**
* Return the root asset path for the given bundle.
*
* @param string $bundle
* @return string
*/
public static function assets($bundle)
{
return ($bundle != DEFAULT_BUNDLE) ? URL::base()."/bundles/{$bundle}/" : URL::base().'/';
}
/**
* Get the bundle name from a given identifier.
*
* <code>
* // Returns "admin" as the bundle name for the identifier
* $bundle = Bundle::name('admin::home.index');
* </code>
*
* @param string $identifier
* @return string
*/
public static function name($identifier)
{
list($bundle, $element) = static::parse($identifier);
return $bundle;
}
/**
* Get the element name from a given identifier.
*
* <code>
* // Returns "home.index" as the element name for the identifier
* $bundle = Bundle::bundle('admin::home.index');
* </code>
*
* @param string $identifier
* @return string
*/
public static function element($identifier)
{
list($bundle, $element) = static::parse($identifier);
return $element;
}
/**
* Reconstruct an identifier from a given bundle and element.
*
* <code>
* // Returns "admin::home.index"
* $identifier = Bundle::identifier('admin', 'home.index');
*
* // Returns "home.index"
* $identifier = Bundle::identifier('application', 'home.index');
* </code>
*
* @param string $bundle
* @param string $element
* @return string
*/
public static function identifier($bundle, $element)
{
return (is_null($bundle) or $bundle == DEFAULT_BUNDLE) ? $element : $bundle.'::'.$element;
}
/**
* Return the bundle name if it exists, else return the default bundle.
*
* @param string $bundle
* @return string
*/
public static function resolve($bundle)
{
return (static::exists($bundle)) ? $bundle : DEFAULT_BUNDLE;
}
/**
* Parse a element identifier and return the bundle name and element.
*
* <code>
* // Returns array(null, 'admin.user')
* $element = Bundle::parse('admin.user');
*
* // Parses "admin::user" and returns array('admin', 'user')
* $element = Bundle::parse('admin::user');
* </code>
*
* @param string $identifier
* @return array
*/
public static function parse($identifier)
{
// The parsed elements are cached so we don't have to reparse them on each
// subsequent request for the parsed element. So, if we've already parsed
// the given element, we'll just return the cached copy.
if (isset(static::$elements[$identifier]))
{
return static::$elements[$identifier];
}
if (strpos($identifier, '::') !== false)
{
$element = explode('::', strtolower($identifier));
}
// If no bundle is in the identifier, we will insert the default bundle
// since classes like Config and Lang organize their items by bundle.
// The "application" folder essentially behaves as a bundle.
else
{
$element = array(DEFAULT_BUNDLE, strtolower($identifier));
}
return static::$elements[$identifier] = $element;
}
/**
* Detect all of the existing bundles in the application.
*
* @return array
*/
public static function all()
{
if (is_array(static::$bundles)) return static::$bundles;
$bundles = array();
$files = glob(BUNDLE_PATH.'*');
// When open_basedir is enabled the glob function returns false on
// an empty array. We'll check for this and return an empty array
// if the bundle directory doesn't have any bundles.
if ($files !== false)
{
foreach (array_filter($files, 'is_dir') as $bundle)
{
$bundles[] = basename($bundle);
}
}
return static::$bundles = $bundles;
}
}