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200 lines
5.2 KiB
200 lines
5.2 KiB
<?php |
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/** |
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* PHPExcel_Shared_ZipStreamWrapper |
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* |
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* Copyright (c) 2006 - 2015 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 - 2015 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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class PHPExcel_Shared_ZipStreamWrapper |
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{ |
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/** |
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* Internal ZipAcrhive |
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* |
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* @var ZipArchive |
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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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{ |
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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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{ |
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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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{ |
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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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{ |
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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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{ |
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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 $count maximum number of bytes to read |
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* @return string |
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*/ |
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public function stream_read($count) |
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{ |
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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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{ |
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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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{ |
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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, $whence) |
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{ |
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switch ($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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}
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