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2388 jpm 1 
<?php
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/**
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 * PHPExcel
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 *
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 * Copyright (c) 2006 - 2013 PHPExcel
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 * @category   PHPExcel
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 * @package    PHPExcel_Shared
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 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
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 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
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 * @version    ##VERSION##, ##DATE##
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 */
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/**
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 * PHPExcel_Shared_ZipStreamWrapper
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 *
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 * @category   PHPExcel
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 * @package    PHPExcel_Shared
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 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
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 */
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class PHPExcel_Shared_ZipStreamWrapper {
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	/**
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	 * Internal ZipAcrhive
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	 *
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	 * @var ZipAcrhive
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	 */
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    private $_archive;
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    /**
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     * Filename in ZipAcrhive
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     *
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     * @var string
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     */
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    private $_fileNameInArchive = '';
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    /**
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     * Position in file
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     *
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     * @var int
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     */
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    private $_position = 0;
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    /**
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     * Data
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     *
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     * @var mixed
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     */
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    private $_data = '';
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    /**
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     * Register wrapper
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     */
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    public static function register() {
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		@stream_wrapper_unregister("zip");
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		@stream_wrapper_register("zip", __CLASS__);
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    }
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    /**
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	 * Implements support for fopen().
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	 *
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	 * @param	string	$path			resource name including scheme, e.g.
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	 * @param	string	$mode			only "r" is supported
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	 * @param	int		$options		mask of STREAM_REPORT_ERRORS and STREAM_USE_PATH
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	 * @param	string  &$openedPath	absolute path of the opened stream (out parameter)
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	 * @return	bool    true on success
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     */
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    public function stream_open($path, $mode, $options, &$opened_path) {
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        // Check for mode
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        if ($mode{0} != 'r') {
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            throw new PHPExcel_Reader_Exception('Mode ' . $mode . ' is not supported. Only read mode is supported.');
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        }
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		$pos = strrpos($path, '#');
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		$url['host'] = substr($path, 6, $pos - 6); // 6: strlen('zip://')
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		$url['fragment'] = substr($path, $pos + 1);
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        // Open archive
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        $this->_archive = new ZipArchive();
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        $this->_archive->open($url['host']);
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        $this->_fileNameInArchive = $url['fragment'];
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        $this->_position = 0;
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        $this->_data = $this->_archive->getFromName( $this->_fileNameInArchive );
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        return true;
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    }
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    /**
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	 * Implements support for fstat().
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	 *
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	 * @return  boolean
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     */
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    public function statName() {
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        return $this->_fileNameInArchive;
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    }
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    /**
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	 * Implements support for fstat().
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	 *
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	 * @return  boolean
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     */
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    public function url_stat() {
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        return $this->statName( $this->_fileNameInArchive );
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    }
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    /**
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	 * Implements support for fstat().
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	 *
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	 * @return  boolean
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     */
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    public function stream_stat() {
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        return $this->_archive->statName( $this->_fileNameInArchive );
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    }
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    /**
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	 * Implements support for fread(), fgets() etc.
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	 *
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	 * @param   int		$count	maximum number of bytes to read
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	 * @return  string
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     */
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    function stream_read($count) {
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        $ret = substr($this->_data, $this->_position, $count);
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        $this->_position += strlen($ret);
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        return $ret;
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    }
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    /**
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	 * Returns the position of the file pointer, i.e. its offset into the file
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	 * stream. Implements support for ftell().
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	 *
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	 * @return  int
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     */
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    public function stream_tell() {
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        return $this->_position;
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    }
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    /**
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     * EOF stream
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	 *
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	 * @return	bool
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     */
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    public function stream_eof() {
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        return $this->_position >= strlen($this->_data);
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    }
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    /**
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     * Seek stream
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	 *
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	 * @param	int		$offset	byte offset
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	 * @param	int		$whence	SEEK_SET, SEEK_CUR or SEEK_END
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	 * @return	bool
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     */
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    public function stream_seek($offset, $whence) {
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        switch ($whence) {
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            case SEEK_SET:
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                if ($offset < strlen($this->_data) && $offset >= 0) {
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                     $this->_position = $offset;
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                     return true;
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                } else {
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                     return false;
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                }
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                break;
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            case SEEK_CUR:
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                if ($offset >= 0) {
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                     $this->_position += $offset;
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                     return true;
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                } else {
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                     return false;
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                }
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                break;
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            case SEEK_END:
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                if (strlen($this->_data) + $offset >= 0) {
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                     $this->_position = strlen($this->_data) + $offset;
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                     return true;
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                } else {
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                     return false;
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                }
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                break;
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            default:
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                return false;
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        }
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    }
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}