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<?php /** * PHPExcel * * Copyright (c) 2006 - 2014 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 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version 1.8.0, 2014-03-02 */
/** * PHPExcel_Shared_ZipStreamWrapper * * @category PHPExcel * @package PHPExcel_Shared * @copyright Copyright (c) 2006 - 2014 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__); }
/** * Implements support for fopen(). * * @param string $path resource name including scheme, e.g. * @param string $mode only "r" is supported * @param int $options mask of STREAM_REPORT_ERRORS and STREAM_USE_PATH * @param string &$openedPath absolute path of the opened stream (out parameter) * @return bool true on success */ public function stream_open($path, $mode, $options, &$opened_path) { // Check for mode if ($mode{0} != 'r') { throw new PHPExcel_Reader_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; }
/** * Implements support for fstat(). * * @return boolean */ public function statName() { return $this->_fileNameInArchive; }
/** * Implements support for fstat(). * * @return boolean */ public function url_stat() { return $this->statName( $this->_fileNameInArchive ); }
/** * Implements support for fstat(). * * @return boolean */ public function stream_stat() { return $this->_archive->statName( $this->_fileNameInArchive ); }
/** * Implements support for fread(), fgets() etc. * * @param int $count maximum number of bytes to read * @return string */ function stream_read($count) { $ret = substr($this->_data, $this->_position, $count); $this->_position += strlen($ret); return $ret; }
/** * Returns the position of the file pointer, i.e. its offset into the file * stream. Implements support for ftell(). * * @return int */ public function stream_tell() { return $this->_position; }
/** * EOF stream * * @return bool */ public function stream_eof() { return $this->_position >= strlen($this->_data); }
/** * Seek stream * * @param int $offset byte offset * @param int $whence SEEK_SET, SEEK_CUR or SEEK_END * @return bool */ public function stream_seek($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; } } }
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