shop.balmet.com

Filesystem.php (7226B)

---

 <?php
 
 /*
  * This file is part of Twig.
  *
  * (c) 2009 Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 
 /**
  * Loads template from the filesystem.
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
 class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderInterface
 {
     /** Identifier of the main namespace. */
     const MAIN_NAMESPACE = '__main__';
 
     protected $paths = array();
     protected $cache = array();
     protected $errorCache = array();
 
     /**
      * Constructor.
      *
      * @param string|array $paths A path or an array of paths where to look for templates
      */
     public function __construct($paths = array())
     {
         if ($paths) {
             $this->setPaths($paths);
         }
     }
 
     /**
      * Returns the paths to the templates.
      *
      * @param string $namespace A path namespace
      *
      * @return array The array of paths where to look for templates
      */
     public function getPaths($namespace = self::MAIN_NAMESPACE)
     {
         return isset($this->paths[$namespace]) ? $this->paths[$namespace] : array();
     }
 
     /**
      * Returns the path namespaces.
      *
      * The main namespace is always defined.
      *
      * @return array The array of defined namespaces
      */
     public function getNamespaces()
     {
         return array_keys($this->paths);
     }
 
     /**
      * Sets the paths where templates are stored.
      *
      * @param string|array $paths     A path or an array of paths where to look for templates
      * @param string       $namespace A path namespace
      */
     public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
     {
         if (!is_array($paths)) {
             $paths = array($paths);
         }
 
         $this->paths[$namespace] = array();
         foreach ($paths as $path) {
             $this->addPath($path, $namespace);
         }
     }
 
     /**
      * Adds a path where templates are stored.
      *
      * @param string $path      A path where to look for templates
      * @param string $namespace A path name
      *
      * @throws Twig_Error_Loader
      */
     public function addPath($path, $namespace = self::MAIN_NAMESPACE)
     {
         // invalidate the cache
         $this->cache = $this->errorCache = array();
 
         if (!is_dir($path)) {
             throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
         }
 
         $this->paths[$namespace][] = rtrim($path, '/\\');
     }
 
     /**
      * Prepends a path where templates are stored.
      *
      * @param string $path      A path where to look for templates
      * @param string $namespace A path name
      *
      * @throws Twig_Error_Loader
      */
     public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
     {
         // invalidate the cache
         $this->cache = $this->errorCache = array();
 
         if (!is_dir($path)) {
             throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
         }
 
         $path = rtrim($path, '/\\');
 
         if (!isset($this->paths[$namespace])) {
             $this->paths[$namespace][] = $path;
         } else {
             array_unshift($this->paths[$namespace], $path);
         }
     }
 
     /**
      * {@inheritdoc}
      */
     public function getSource($name)
     {
         return file_get_contents($this->findTemplate($name));
     }
 
     /**
      * {@inheritdoc}
      */
     public function getCacheKey($name)
     {
         return $this->findTemplate($name);
     }
 
     /**
      * {@inheritdoc}
      */
     public function exists($name)
     {
         $name = $this->normalizeName($name);
 
         if (isset($this->cache[$name])) {
             return true;
         }
 
         try {
             return false !== $this->findTemplate($name, false);
         } catch (Twig_Error_Loader $exception) {
             return false;
         }
     }
 
     /**
      * {@inheritdoc}
      */
     public function isFresh($name, $time)
     {
         return filemtime($this->findTemplate($name)) <= $time;
     }
 
     protected function findTemplate($name)
     {
         $throw = func_num_args() > 1 ? func_get_arg(1) : true;
         $name = $this->normalizeName($name);
 
         if (isset($this->cache[$name])) {
             return $this->cache[$name];
         }
 
         if (isset($this->errorCache[$name])) {
             if (!$throw) {
                 return false;
             }
 
             throw new Twig_Error_Loader($this->errorCache[$name]);
         }
 
         $this->validateName($name);
 
         list($namespace, $shortname) = $this->parseName($name);
 
         if (!isset($this->paths[$namespace])) {
             $this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);
 
             if (!$throw) {
                 return false;
             }
 
             throw new Twig_Error_Loader($this->errorCache[$name]);
         }
 
         foreach ($this->paths[$namespace] as $path) {
             if (is_file($path.'/'.$shortname)) {
                 if (false !== $realpath = realpath($path.'/'.$shortname)) {
                     return $this->cache[$name] = $realpath;
                 }
 
                 return $this->cache[$name] = $path.'/'.$shortname;
             }
         }
 
         $this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));
 
         if (!$throw) {
             return false;
         }
 
         throw new Twig_Error_Loader($this->errorCache[$name]);
     }
 
     protected function parseName($name, $default = self::MAIN_NAMESPACE)
     {
         if (isset($name[0]) && '@' == $name[0]) {
             if (false === $pos = strpos($name, '/')) {
                 throw new Twig_Error_Loader(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
             }
 
             $namespace = substr($name, 1, $pos - 1);
             $shortname = substr($name, $pos + 1);
 
             return array($namespace, $shortname);
         }
 
         return array($default, $name);
     }
 
     protected function normalizeName($name)
     {
         return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
     }
 
     protected function validateName($name)
     {
         if (false !== strpos($name, "\0")) {
             throw new Twig_Error_Loader('A template name cannot contain NUL bytes.');
         }
 
         $name = ltrim($name, '/');
         $parts = explode('/', $name);
         $level = 0;
         foreach ($parts as $part) {
             if ('..' === $part) {
                 --$level;
             } elseif ('.' !== $part) {
                 ++$level;
             }
 
             if ($level < 0) {
                 throw new Twig_Error_Loader(sprintf('Looks like you try to load a template outside configured directories (%s).', $name));
             }
         }
     }
 }