/common/libraries/plugin/phpexcel/PHPExcel/Shared/ZipStreamWrapper.php
PHP | 181 lines | 88 code | 18 blank | 75 comment | 7 complexity | 58ef9b4b0f9d5c22065873fe3ddecbae MD5 | raw file
Possible License(s): GPL-2.0, BSD-3-Clause, LGPL-2.1, LGPL-3.0, GPL-3.0, MIT
- <?php
- /**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2011 PHPExcel
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * @category PHPExcel
- * @package PHPExcel_Shared
- * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
- * @version 1.7.6, 2011-02-27
- */
-
- /**
- * PHPExcel_Shared_ZipStreamWrapper
- *
- * @category PHPExcel
- * @package PHPExcel_Shared
- * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
- class PHPExcel_Shared_ZipStreamWrapper
- {
- /**
- * Internal ZipAcrhive
- *
- * @var ZipAcrhive
- */
- private $_archive;
-
- /**
- * Filename in ZipAcrhive
- *
- * @var string
- */
- private $_fileNameInArchive = '';
-
- /**
- * Position in file
- *
- * @var int
- */
- private $_position = 0;
-
- /**
- * Data
- *
- * @var mixed
- */
- private $_data = '';
-
- /**
- * Register wrapper
- */
- public static function register()
- {
- @stream_wrapper_unregister("zip");
- @stream_wrapper_register("zip", __CLASS__);
- }
-
- /**
- * Open stream
- */
- public function stream_open($path, $mode, $options, &$opened_path)
- {
- // Check for mode
- if ($mode{0} != 'r')
- {
- throw new Exception('Mode ' . $mode . ' is not supported. Only read mode is supported.');
- }
-
- $pos = strrpos($path, '#');
- $url['host'] = substr($path, 6, $pos - 6); // 6: strlen('zip://')
- $url['fragment'] = substr($path, $pos + 1);
-
- // Open archive
- $this->_archive = new ZipArchive();
- $this->_archive->open($url['host']);
-
- $this->_fileNameInArchive = $url['fragment'];
- $this->_position = 0;
- $this->_data = $this->_archive->getFromName($this->_fileNameInArchive);
-
- return true;
- }
-
- /**
- * Stat stream
- */
- public function stream_stat()
- {
- return $this->_archive->statName($this->_fileNameInArchive);
- }
-
- /**
- * Read stream
- */
- function stream_read($count)
- {
- $ret = substr($this->_data, $this->_position, $count);
- $this->_position += strlen($ret);
- return $ret;
- }
-
- /**
- * Tell stream
- */
- public function stream_tell()
- {
- return $this->_position;
- }
-
- /**
- * EOF stream
- */
- public function stream_eof()
- {
- return $this->_position >= strlen($this->_data);
- }
-
- /**
- * Seek stream
- */
- public function stream_seek($offset, $whence)
- {
- switch ($whence)
- {
- case SEEK_SET :
- if ($offset < strlen($this->_data) && $offset >= 0)
- {
- $this->_position = $offset;
- return true;
- }
- else
- {
- return false;
- }
- break;
-
- case SEEK_CUR :
- if ($offset >= 0)
- {
- $this->_position += $offset;
- return true;
- }
- else
- {
- return false;
- }
- break;
-
- case SEEK_END :
- if (strlen($this->_data) + $offset >= 0)
- {
- $this->_position = strlen($this->_data) + $offset;
- return true;
- }
- else
- {
- return false;
- }
- break;
-
- default :
- return false;
- }
- }
- }