126 lines
2.9 KiB
PHP
126 lines
2.9 KiB
PHP
<?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 (! $path) {
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require_once 'Solar/Dir.php';
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$path = rtrim(Solar_Dir::tmp(), DIRECTORY_SEPARATOR);
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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 = $this->_locking
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? LOCK_EX
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: null;
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if (is_file($this->_path . '/' . $id)) {
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@unlink($this->_path . '/' . $id);
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}
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if (! @file_put_contents($this->_path . '/' . $id, $data, $flag)) {
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return false;
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}
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// write control
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if ($data !== $this->fetch($id)) {
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@unlink($file);
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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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private $_path = null;
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private $_locking = null;
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}
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