diff options
Diffstat (limited to 'public/system/library/template/Twig/Loader/Filesystem.php')
| -rw-r--r-- | public/system/library/template/Twig/Loader/Filesystem.php | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/public/system/library/template/Twig/Loader/Filesystem.php b/public/system/library/template/Twig/Loader/Filesystem.php new file mode 100644 index 0000000..1bc75a1 --- /dev/null +++ b/public/system/library/template/Twig/Loader/Filesystem.php @@ -0,0 +1,260 @@ +<?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)); + } + } + } +} |