<?php

class OpenDirectoryXMLCacheObject {
	var $cacheDir = CACHE_DIR;

	function setCacheDir($path)
	{
	    $this->cacheDir = $path;
	}

	function setName($cat) {
		$this->cat = $cat;
	}
	
	function getPath()
	{
		return './' . $this->cacheDir . '/' . md5(strtolower(catPath($this->cat))) . '.txt';
	}

	function read() {
    	if ($this->getPath())
		{
		    if ($fp = fopen($this->getPath(), 'r'))
		    {
				if (($size = filesize($this->getPath())) !== 0)
				{
					$contents = fread($fp, filesize($this->getPath()));
					fclose($fp);
					return $contents;
				}
				else
				{
				    return;
				}
		    }
		    else
		    {
		        return;
			}
		}
		else
		{
			trigger_error('Missed setCachePath($cat)');
			return;
		}
		
		return false;
	}

	function exists() {
	    if ($this->getPath())
		{
	    	return file_exists($this->getPath());
		}
		else
		{
			trigger_error('Missed setCachePath($cat)');
			return;
		}
	}

	function write($data)
	{
	    if ($this->getPath())
		{
		    if ($data != '')
			{
				if ($fp = @fopen($this->getPath(), 'w'))
				{
					fwrite($fp, $data);
					fclose($fp);
					return true;
				}
				else
				{
					if (file_exists($this->cacheDir))
					{
						trigger_error('PHP doesn\'t have write permissions. Chmod the cache directory to 777 or otherwise disable caching.');
						return false;
					}
					else
					{
						if (mkdir($this->cacheDir, 0777))
						{
						    return $this->write($data);
						}
						else
						{
							trigger_error('Your cache directory is missing. We tried to make one. But it returns an error.');
							return false;
						}
					}
				}
			}
			else
			{
			    return false;
			}
		}
		else
		{
			trigger_error('Missed setCachePath($cat)');
			return false;
		}
	}
}

?>