1 files changed, 125 insertions, 0 deletions
diff --git a/min/lib/Minify/Cache/File.php b/min/lib/Minify/Cache/File.php
new file mode 100644
index 0000000..2753e6b
--- /dev/null
+++ b/min/lib/Minify/Cache/File.php
@@ -0,0 +1,125 @@
+<?php
+/**
+ * Class Minify_Cache_File  
+ * @package Minify
+ */
+
+class Minify_Cache_File {
+    
+    public function __construct($path = '', $fileLocking = false)
+    {
+        if (! $path) {
+            require_once 'Solar/Dir.php';
+            $path = rtrim(Solar_Dir::tmp(), DIRECTORY_SEPARATOR);
+        }
+        $this->_locking = $fileLocking;
+        $this->_path = $path;
+    }
+    
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param string $data
+     * 
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        $flag = $this->_locking
+            ? LOCK_EX
+            : null;
+        if (is_file($this->_path . '/' . $id)) {
+            @unlink($this->_path . '/' . $id);
+        }
+        if (! @file_put_contents($this->_path . '/' . $id, $data, $flag)) {
+            return false;
+        }
+        // write control
+        if ($data !== $this->fetch($id)) {
+            @unlink($file);
+            return false;
+        }
+        return true;
+    }
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        return filesize($this->_path . '/' . $id);
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @param int $srcMtime mtime of the original source file(s)
+     * 
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        $file = $this->_path . '/' . $id;
+        return (is_file($file) && (filemtime($file) >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id (e.g. a filename)
+     */
+    public function display($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            fpassthru($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+        } else {
+            readfile($this->_path . '/' . $id);            
+        }
+    }
+    
+	/**
+     * Fetch the cached content
+     *
+     * @param string $id cache id (e.g. a filename)
+     * 
+     * @return string
+     */
+    public function fetch($id)
+    {
+        if ($this->_locking) {
+            $fp = fopen($this->_path . '/' . $id, 'rb');
+            flock($fp, LOCK_SH);
+            $ret = stream_get_contents($fp);
+            flock($fp, LOCK_UN);
+            fclose($fp);
+            return $ret;
+        } else {
+            return file_get_contents($this->_path . '/' . $id);
+        }
+    }
+    
+    /**
+     * Fetch the cache path used
+     *
+     * @return string
+     */
+    public function getPath()
+    {
+        return $this->_path;
+    }
+    
+    private $_path = null;
+    private $_locking = null;
+}