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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 Cache filesystem implementation.
*
* A FilesystemCache instance caches Mustache Template classes from the filesystem by name:
*
* $cache = new Mustache_Cache_FilesystemCache(dirname(__FILE__).'/cache');
* $cache->cache($className, $compiledSource);
*
* The FilesystemCache benefits from any opcode caching that may be setup in your environment. So do that, k?
*/
class Mustache_Cache_FilesystemCache extends Mustache_Cache_AbstractCache
{
private $baseDir;
private $fileMode;
/**
* Filesystem cache constructor.
*
* @param string $baseDir Directory for compiled templates
* @param int $fileMode Override default permissions for cache files. Defaults to using the system-defined umask
*/
public function __construct($baseDir, $fileMode = null)
{
$this->baseDir = $baseDir;
$this->fileMode = $fileMode;
}
/**
* Load the class from cache using `require_once`.
*
* @param string $key
*
* @return bool
*/
public function load($key)
{
$fileName = $this->getCacheFilename($key);
if (!is_file($fileName)) {
return false;
}
require_once $fileName;
return true;
}
/**
* Cache and load the compiled class.
*
* @param string $key
* @param string $value
*/
public function cache($key, $value)
{
$fileName = $this->getCacheFilename($key);
$this->log(
Mustache_Logger::DEBUG,
'Writing to template cache: "{fileName}"',
array('fileName' => $fileName)
);
$this->writeFile($fileName, $value);
$this->load($key);
}
/**
* Build the cache filename.
* Subclasses should override for custom cache directory structures.
*
* @param string $name
*
* @return string
*/
protected function getCacheFilename($name)
{
return sprintf('%s/%s.php', $this->baseDir, $name);
}
/**
* Create cache directory.
*
* @throws Mustache_Exception_RuntimeException If unable to create directory
*
* @param string $fileName
*
* @return string
*/
private function buildDirectoryForFilename($fileName)
{
$dirName = dirname($fileName);
if (!is_dir($dirName)) {
$this->log(
Mustache_Logger::INFO,
'Creating Mustache template cache directory: "{dirName}"',
array('dirName' => $dirName)
);
@mkdir($dirName, 0777, true);
// @codeCoverageIgnoreStart
if (!is_dir($dirName)) {
throw new Mustache_Exception_RuntimeException(sprintf('Failed to create cache directory "%s".', $dirName));
}
// @codeCoverageIgnoreEnd
}
return $dirName;
}
/**
* Write cache file.
*
* @throws Mustache_Exception_RuntimeException If unable to write file
*
* @param string $fileName
* @param string $value
*/
private function writeFile($fileName, $value)
{
$dirName = $this->buildDirectoryForFilename($fileName);
$this->log(
Mustache_Logger::DEBUG,
'Caching compiled template to "{fileName}"',
array('fileName' => $fileName)
);
$tempFile = tempnam($dirName, basename($fileName));
if (false !== @file_put_contents($tempFile, $value)) {
if (@rename($tempFile, $fileName)) {
$mode = isset($this->fileMode) ? $this->fileMode : (0666 & ~umask());
@chmod($fileName, $mode);
return;
}
// @codeCoverageIgnoreStart
$this->log(
Mustache_Logger::ERROR,
'Unable to rename Mustache temp cache file: "{tempName}" -> "{fileName}"',
array('tempName' => $tempFile, 'fileName' => $fileName)
);
// @codeCoverageIgnoreEnd
}
// @codeCoverageIgnoreStart
throw new Mustache_Exception_RuntimeException(sprintf('Failed to write cache file "%s".', $fileName));
// @codeCoverageIgnoreEnd
}
}