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<?php
/*
* This file is part of Mustache.php.
*
* (c) 2010-2017 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Mustache Template filesystem Loader implementation.
*
* A FilesystemLoader instance loads Mustache Template source from the filesystem by name:
*
* $loader = new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views');
* $tpl = $loader->load('foo'); // equivalent to `file_get_contents(dirname(__FILE__).'/views/foo.mustache');
*
* This is probably the most useful Mustache Loader implementation. It can be used for partials and normal Templates:
*
* $m = new Mustache(array(
* 'loader' => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views'),
* 'partials_loader' => new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views/partials'),
* ));
*/
class Mustache_Loader_FilesystemLoader implements Mustache_Loader
{
private $baseDir;
private $extension = '.mustache';
private $templates = array();
/**
* Mustache filesystem Loader constructor.
*
* Passing an $options array allows overriding certain Loader options during instantiation:
*
* $options = array(
* // The filename extension used for Mustache templates. Defaults to '.mustache'
* 'extension' => '.ms',
* );
*
* @throws Mustache_Exception_RuntimeException if $baseDir does not exist
*
* @param string $baseDir Base directory containing Mustache template files
* @param array $options Array of Loader options (default: array())
*/
public function __construct($baseDir, array $options = array())
{
$this->baseDir = $baseDir;
if (strpos($this->baseDir, '://') === false) {
$this->baseDir = realpath($this->baseDir);
}
if ($this->shouldCheckPath() && !is_dir($this->baseDir)) {
throw new Mustache_Exception_RuntimeException(sprintf('FilesystemLoader baseDir must be a directory: %s', $baseDir));
}
if (array_key_exists('extension', $options)) {
if (empty($options['extension'])) {
$this->extension = '';
} else {
$this->extension = '.' . ltrim($options['extension'], '.');
}
}
}
/**
* Load a Template by name.
*
* $loader = new Mustache_Loader_FilesystemLoader(dirname(__FILE__).'/views');
* $loader->load('admin/dashboard'); // loads "./views/admin/dashboard.mustache";
*
* @param string $name
*
* @return string Mustache Template source
*/
public function load($name)
{
if (!isset($this->templates[$name])) {
$this->templates[$name] = $this->loadFile($name);
}
return $this->templates[$name];
}
/**
* Helper function for loading a Mustache file by name.
*
* @throws Mustache_Exception_UnknownTemplateException If a template file is not found
*
* @param string $name
*
* @return string Mustache Template source
*/
protected function loadFile($name)
{
$fileName = $this->getFileName($name);
if ($this->shouldCheckPath() && !file_exists($fileName)) {
throw new Mustache_Exception_UnknownTemplateException($name);
}
return file_get_contents($fileName);
}
/**
* Helper function for getting a Mustache template file name.
*
* @param string $name
*
* @return string Template file name
*/
protected function getFileName($name)
{
$fileName = $this->baseDir . '/' . $name;
if (substr($fileName, 0 - strlen($this->extension)) !== $this->extension) {
$fileName .= $this->extension;
}
return $fileName;
}
/**
* Only check if baseDir is a directory and requested templates are files if
* baseDir is using the filesystem stream wrapper.
*
* @return bool Whether to check `is_dir` and `file_exists`
*/
protected function shouldCheckPath()
{
return strpos($this->baseDir, '://') === false || strpos($this->baseDir, 'file://') === 0;
}
}