<?php
// $Header$

//this script may only be included - so its better to die if called directly.
if (strpos($_SERVER["SCRIPT_NAME"],basename(__FILE__)) !== false) {
  header("location: index.php");
  exit;
}

/*
A basic library to handle a cache of some Tiki Objects,
usage is simple and feel free to improve it
*/

class Cachelib {

  var $folder;

  function Cachelib() {
        global $tikidomain;
        $this->folder = "temp/cache";
        if ($tikidomain) {
            $this->folder.= "/$tikidomain";
        }
    if(!is_dir($this->folder)) {
          mkdir($this->folder);
            @chmod($this->folder,"0777");
    }
  }
    
  function cacheItem($key,$data) {
        $key = md5($key);
        $fw = fopen(($this->folder)."/".$key,"w");
        fwrite($fw,$data);
        fclose($fw);
        return true;
  }
    
  function isCached($key) {
        $key = md5($key);
        return is_file($this->folder."/$key");
  }
    
  function getCached($key) {
        $key = md5($key);
    if ( filesize($this->folder."/$key") == 0 ) {     
            return serialize(false);
        }
        $fw = fopen($this->folder."/$key","w");
        $data = fread($fw,filesize($this->folder."/$key"));
        fclose($fw);
        return $data;
}
    
  /** gets the timestamp of item insertion in cache,
   *  returns false if key doesn't exist
   */
  function getCachedDate($key) {
      $key = md5($key);
      if( is_file($this->folder."/$key") ) {
          return filemtime($this->folder."/$key");
      } else return false;
  }
        
  function invalidate($key) {
        $key = md5($key);
        @unlink($this->folder."/$key");
  }
}

$cachelib = new Cachelib();
?>

$fw = fopen($this->folder."/$key","w");

$fw = fopen($this->folder.'/'.$key,'w');