add classes/diskcache

classes/diskcache.php

@@ -0,0 +1,51 @@
+<?php
+class DiskCache {
+	private $dir;
+
+	public function __construct($dir) {
+		$this->dir = basename($dir);
+	}
+
+	public function getDir() {
+		return $this->dir;
+	}
+
+	public function exists($filename) {
+		return file_exists($this->getFullPath($filename));
+	}
+
+	public function getSize($filename) {
+		if ($this->exists($filename))
+			return filesize($this->getFullPath($filename));
+		else
+			return -1;
+	}
+
+	public function getFullPath($filename) {
+		$filename = basename($filename);
+
+		return CACHE_DIR . "/" . $this->dir . "/" . $filename;
+	}
+
+	public function put($filename, $data) {
+		return file_put_contents($this->getFullPath($filename), $data);
+	}
+
+	public function touch($filename) {
+		return touch($this->getFullPath($filename));
+	}
+
+	public function get($filename) {
+		if ($this->exists($filename))
+			return file_get_contents($this->getFullPath($filename));
+		else
+			return null;
+	}
+
+	public function getMimeType($filename) {
+		if ($this->exists($filename))
+			return mime_content_type($this->getFullPath($filename));
+		else
+			return null;
+	}
+}