mirror of
https://github.com/EGroupware/egroupware.git
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195 lines
4.7 KiB
PHP
Executable File
195 lines
4.7 KiB
PHP
Executable File
<?php
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/**
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* Class Minify_Cache_File
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* @package Minify
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*/
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class Minify_Cache_File {
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public function __construct($path = '', $fileLocking = false)
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{
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if (! $path) {
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$path = self::tmp();
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}
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$this->_locking = $fileLocking;
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$this->_path = $path;
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}
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/**
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* Write data to cache.
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*
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* @param string $id cache id (e.g. a filename)
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*
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* @param string $data
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*
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* @return bool success
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*/
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public function store($id, $data)
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{
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$flag = $this->_locking
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? LOCK_EX
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: null;
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$file = $this->_path . '/' . $id;
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if (! @file_put_contents($file, $data, $flag)) {
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$this->_log("Minify_Cache_File: Write failed to '$file'");
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}
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// write control
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if ($data !== $this->fetch($id)) {
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@unlink($file);
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$this->_log("Minify_Cache_File: Post-write read failed for '$file'");
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return false;
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}
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return true;
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}
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/**
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* Get the size of a cache entry
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*
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* @param string $id cache id (e.g. a filename)
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*
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* @return int size in bytes
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*/
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public function getSize($id)
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{
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return filesize($this->_path . '/' . $id);
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}
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/**
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* Does a valid cache entry exist?
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*
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* @param string $id cache id (e.g. a filename)
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*
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* @param int $srcMtime mtime of the original source file(s)
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*
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* @return bool exists
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*/
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public function isValid($id, $srcMtime)
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{
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$file = $this->_path . '/' . $id;
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return (is_file($file) && (filemtime($file) >= $srcMtime));
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}
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/**
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* Send the cached content to output
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*
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* @param string $id cache id (e.g. a filename)
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*/
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public function display($id)
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{
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if ($this->_locking) {
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$fp = fopen($this->_path . '/' . $id, 'rb');
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flock($fp, LOCK_SH);
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fpassthru($fp);
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flock($fp, LOCK_UN);
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fclose($fp);
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} else {
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readfile($this->_path . '/' . $id);
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}
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}
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/**
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* Fetch the cached content
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*
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* @param string $id cache id (e.g. a filename)
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*
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* @return string
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*/
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public function fetch($id)
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{
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if ($this->_locking) {
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$fp = fopen($this->_path . '/' . $id, 'rb');
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flock($fp, LOCK_SH);
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$ret = stream_get_contents($fp);
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flock($fp, LOCK_UN);
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fclose($fp);
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return $ret;
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} else {
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return file_get_contents($this->_path . '/' . $id);
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}
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}
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/**
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* Fetch the cache path used
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*
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* @return string
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*/
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public function getPath()
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{
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return $this->_path;
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}
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/**
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* Get a usable temp directory
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*
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* Adapted from Solar/Dir.php
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* @author Paul M. Jones <pmjones@solarphp.com>
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* @license http://opensource.org/licenses/bsd-license.php BSD
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* @link http://solarphp.com/trac/core/browser/trunk/Solar/Dir.php
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*
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* @return string
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*/
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public static function tmp()
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{
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static $tmp = null;
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if (! $tmp) {
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$tmp = function_exists('sys_get_temp_dir')
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? sys_get_temp_dir()
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: self::_tmp();
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$tmp = rtrim($tmp, DIRECTORY_SEPARATOR);
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}
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return $tmp;
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}
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/**
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* Returns the OS-specific directory for temporary files
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*
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* @author Paul M. Jones <pmjones@solarphp.com>
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* @license http://opensource.org/licenses/bsd-license.php BSD
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* @link http://solarphp.com/trac/core/browser/trunk/Solar/Dir.php
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*
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* @return string
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*/
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protected static function _tmp()
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{
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// non-Windows system?
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if (strtolower(substr(PHP_OS, 0, 3)) != 'win') {
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$tmp = empty($_ENV['TMPDIR']) ? getenv('TMPDIR') : $_ENV['TMPDIR'];
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if ($tmp) {
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return $tmp;
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} else {
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return '/tmp';
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}
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}
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// Windows 'TEMP'
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$tmp = empty($_ENV['TEMP']) ? getenv('TEMP') : $_ENV['TEMP'];
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if ($tmp) {
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return $tmp;
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}
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// Windows 'TMP'
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$tmp = empty($_ENV['TMP']) ? getenv('TMP') : $_ENV['TMP'];
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if ($tmp) {
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return $tmp;
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}
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// Windows 'windir'
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$tmp = empty($_ENV['windir']) ? getenv('windir') : $_ENV['windir'];
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if ($tmp) {
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return $tmp;
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}
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// final fallback for Windows
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return getenv('SystemRoot') . '\\temp';
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}
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/**
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* Send message to the Minify logger
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* @param string $msg
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* @return null
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*/
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protected function _log($msg)
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{
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Minify_Logger::log($msg);
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}
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private $_path = null;
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private $_locking = null;
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}
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