+++ /dev/null
-<?php
-/**
- * GZIP compression and decompression class
- *
- * @author Roland Haeder <webmaster@ship-simu.org>
- * @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, this is free software
- * @license GNU GPL 3.0 or any newer version
- * @link http://www.ship-simu.org
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-class GzipCompressor extends BaseFrameworkSystem implements Compressor {
- /**
- * Protected constructor
- *
- * @return void
- */
- protected function __construct () {
- // Call parent constructor!
- parent::__construct(__CLASS__);
- }
-
- /**
- * Create a new compressor channel based a given compression handler
- *
- * @return $cInstance An instance of this class
- */
- public final static function createGzipCompressor () {
- // Get new instance
- if ((function_exists('gzcompress')) && (function_exists('gzuncompress'))) {
- // Compressor can maybe be used
- $cInstance = new GzipCompressor();
- } else {
- // Routines not found!
- $cInstance = null;
- }
-
- // Return the compressor instance
- return $cInstance;
- }
-
- /**
- * GZIP compression stream
- *
- * @param $streamData Mixed non-object stream data
- * @return $streamData The compressed stream data
- * @throws InvalidObjectException If the stream is an object
- */
- public function compressStream ($streamData) {
- if (is_object($streamData)) {
- // Throw an exception
- throw new InvalidObjectException($streamData, self::EXCEPTION_UNEXPECTED_OBJECT);
- }
-
- // Return the compressed stream
- return gzcompress($streamData, 1);
- }
-
- /**
- * GZIP decompression stream
- *
- * @param $streamData Mixed non-object stream data
- * @return $streamData The decompressed stream data
- * @throws InvalidObjectException If the stream is an object
- */
- public function decompressStream ($streamData) {
- if (is_object($streamData)) {
- // Throw an exception
- throw new InvalidObjectException($streamData, self::EXCEPTION_UNEXPECTED_OBJECT);
- }
-
- // Return the decompressed stream
- return gzuncompress($streamData);
- }
-
- /**
- * Getter for the file extension of this compressor
- *
- * @return $string Returns always "gz"
- */
- public final function getCompressorExtension () {
- return "gz";
- }
-}
-
-// [EOF]
-?>