ZipStreamWrapper.php in Loft Data Grids 6.2

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vendor/phpoffice/phpexcel/Classes/PHPExcel/Shared/ZipStreamWrapper.php

<?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    ##VERSION##, ##DATE##
 */

/**
 * 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;
    }
  }

}

Classes

Name	Description
PHPExcel_Shared_ZipStreamWrapper	PHPExcel_Shared_ZipStreamWrapper