<?php

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */



/**

 * Add a directory to the public name of all the files of a reader

 *

 * PHP versions 4 and 5

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330,Boston,MA 02111-1307 USA

 *

 * @category   File Formats

 * @package    File_Archive

 * @author     Vincent Lascaux <vincentlascaux@php.net>

 * @copyright  1997-2005 The PHP Group

 * @license    http://www.gnu.org/copyleft/lesser.html  LGPL

 * @version    CVS: $Id: ChangeName.php,v 1.19 2005/07/09 12:54:35 vincentlascaux Exp $

 * @link       http://pear.php.net/package/File_Archive

 */



require_once "File/Archive/Reader/Relay.php";



/**

 * Add a directory to the public name of all the files of a reader

 *

 * Example:

 *  If archive.tar is a file archive containing files a.txt and foo/b.txt

 *  new File_Archive_Reader_AddBaseName('bar',

 *     new File_Archive_Reader_Tar(

 *         new File_Archive_Reader_File('archive.tar')

 *     )

 *  ) is a reader containing files bar/a.txt and bar/foo/b.txt

 */

class File_Archive_Reader_AddBaseName extends File_Archive_Reader_Relay

{

    var $baseName;

    function File_Archive_Reader_AddBaseName($baseName, &$source)

    {

        parent::File_Archive_Reader_Relay($source);

        $this->baseName = $this->getStandardURL($baseName);

    }



    /**

     * Modify the name by adding baseName to it

     */

    function modifyName($name)

    {

        return $this->baseName.

               (empty($this->baseName) || empty($name) ? '': '/').

               $name;

    }



    /**

     * Remove baseName from the name

     * Return false if the name doesn't start with baseName

     */

    function unmodifyName($name)

    {

        if (strncmp($name, $this->baseName.'/', strlen($this->baseName)+1) == 0) {

            $res = substr($name, strlen($this->baseName)+1);

            if ($res === false) {

                return '';

            } else {

                return $res;

            }

        } else if (empty($this->baseName)) {

            return $name;

        } else if ($name == $this->baseName) {

            return '';

        } else {

            return false;

        }

    }



    /**

     * @see File_Archive_Reader::getFilename()

     */

    function getFilename()

    {

        return $this->modifyName(parent::getFilename());

    }

    /**

     * @see File_Archive_Reader::getFileList()

     */

    function getFileList()

    {

        $list = parent::getFileList();

        $result = array();

        foreach ($list as $name) {

            $result[] = $this->modifyName($name);

        }

        return $result;

    }

    /**

     * @see File_Archive_Reader::select()

     */

    function select($filename, $close = true)

    {

        $name = $this->unmodifyName($filename);

        if ($name === false) {

            return false;

        } else {

            return $this->source->select($name, $close);

        }

    }

}



/**

 * Change a directory name to another

 *

 * Example:

 *  If archive.tar is a file archive containing files a.txt and foo/b.txt

 *  new File_Archive_Reader_ChangeBaseName('foo', 'bar'

 *     new File_Archive_Reader_Tar(

 *         new File_Archive_Reader_File('archive.tar')

 *     )

 *  ) is a reader containing files a.txt and bar/b.txt

 */

class File_Archive_Reader_ChangeBaseName extends File_Archive_Reader_Relay

{

    var $oldBaseName;

    var $newBaseName;



    function File_Archive_Reader_ChangeBaseName

                        ($oldBaseName, $newBaseName, &$source)

    {

        parent::File_Archive_Reader_Relay($source);

        $this->oldBaseName = $this->getStandardURL($oldBaseName);

        if (substr($this->oldBaseName, -1) == '/') {

            $this->oldBaseName = substr($this->oldBaseName, 0, -1);

        }



        $this->newBaseName = $this->getStandardURL($newBaseName);

        if (substr($this->newBaseName, -1) == '/') {

            $this->newBaseName = substr($this->newBaseName, 0, -1);

        }

    }



    function modifyName($name)

    {

        if (empty($this->oldBaseName) ||

          !strncmp($name, $this->oldBaseName.'/', strlen($this->oldBaseName)+1) ||

           strcmp($name, $this->oldBaseName) == 0) {

            return $this->newBaseName.

                   (

                    empty($this->newBaseName) ||

                    strlen($name)<=strlen($this->oldBaseName)+1 ?

                    '' : '/'

                   ).

                   substr($name, strlen($this->oldBaseName)+1);

        } else {

            return $name;

        }

    }

    function unmodifyName($name)

    {

        if (empty($this->newBaseName) ||

          !strncmp($name, $this->newBaseName.'/', strlen($this->newBaseName)+1) ||

           strcmp($name, $this->newBaseName) == 0) {

            return $this->oldBaseName.

                   (

                    empty($this->oldBaseName) ||

                    strlen($name)<=strlen($this->newBaseName)+1 ?

                    '' : '/'

                   ).

                   substr($name, strlen($this->newBaseName)+1);

        } else {

            return $name;

        }

    }



    /**

     * @see File_Archive_Reader::getFilename()

     */

    function getFilename()

    {

        return $this->modifyName(parent::getFilename());

    }

    /**

     * @see File_Archive_Reader::getFileList()

     */

    function getFileList()

    {

        $list = parent::getFileList();

        $result = array();

        foreach ($list as $name) {

            $result[] = $this->modifyName($name);

        }

        return $result;

    }

    /**

     * @see File_Archive_Reader::select()

     */

    function select($filename, $close = true)

    {

        return $this->source->select($this->unmodifyName($filename));

    }



}



?>