Rar.php

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<?php
#require_once 'Zend/Filter/Compress/CompressAbstract.php';

class Zend_Filter_Compress_Rar extends Zend_Filter_Compress_CompressAbstract
{
    protected $_options = array(
        'callback' => null,
        'archive'  => null,
        'password' => null,
        'target'   => '.',
    );

    public function __construct($options = null)
    {
        if (!extension_loaded('rar')) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception('This filter needs the rar extension');
        }
        parent::__construct($options);
    }

    public function getCallback()
    {
        return $this->_options['callback'];
    }

    public function setCallback($callback)
    {
        if (!is_callable($callback)) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception('Callback can not be accessed');
        }

        $this->_options['callback'] = $callback;
        return $this;
    }

    public function getArchive()
    {
        return $this->_options['archive'];
    }

    public function setArchive($archive)
    {
        $archive = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $archive);
        $this->_options['archive'] = (string) $archive;

        return $this;
    }

    public function getPassword()
    {
        return $this->_options['password'];
    }

    public function setPassword($password)
    {
        $this->_options['password'] = (string) $password;
        return $this;
    }

    public function getTarget()
    {
        return $this->_options['target'];
    }

    public function setTarget($target)
    {
        if (!file_exists(dirname($target))) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception("The directory '$target' does not exist");
        }

        $target = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $target);
        $this->_options['target'] = (string) $target;
        return $this;
    }

    public function compress($content)
    {
        $callback = $this->getCallback();
        if ($callback === null) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception('No compression callback available');
        }

        $options = $this->getOptions();
        unset($options['callback']);

        $result = call_user_func($callback, $options, $content);
        if ($result !== true) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception('Error compressing the RAR Archive');
        }

        return $this->getArchive();
    }

    public function decompress($content)
    {
        $archive = $this->getArchive();
        if (file_exists($content)) {
            $archive = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, realpath($content));
        } elseif (empty($archive) || !file_exists($archive)) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception('RAR Archive not found');
        }

        $password = $this->getPassword();
        if ($password !== null) {
            $archive = rar_open($archive, $password);
        } else {
            $archive = rar_open($archive);
        }

        if (!$archive) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception("Error opening the RAR Archive");
        }

        $target = $this->getTarget();
        if (!is_dir($target)) {
            $target = dirname($target);
        }

        $filelist = rar_list($archive);
        if (!$filelist) {
            #require_once 'Zend/Filter/Exception.php';
            throw new Zend_Filter_Exception("Error reading the RAR Archive");
        }

        foreach($filelist as $file) {
            $file->extract($target);
        }

        rar_close($archive);
        return true;
    }

    public function toString()
    {
        return 'Rar';
    }
}