diff options
Diffstat (limited to 'library/vendor/Zend/Filter/Compress/Gz.php')
| -rw-r--r-- | library/vendor/Zend/Filter/Compress/Gz.php | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/library/vendor/Zend/Filter/Compress/Gz.php b/library/vendor/Zend/Filter/Compress/Gz.php new file mode 100644 index 0000000..e799a90 --- /dev/null +++ b/library/vendor/Zend/Filter/Compress/Gz.php @@ -0,0 +1,220 @@ +<?php +/** + * Zend Framework + * + * LICENSE + * + * This source file is subject to the new BSD license that is bundled + * with this package in the file LICENSE.txt. + * It is also available through the world-wide-web at this URL: + * http://framework.zend.com/license/new-bsd + * If you did not receive a copy of the license and are unable to + * obtain it through the world-wide-web, please send an email + * to license@zend.com so we can send you a copy immediately. + * + * @category Zend + * @package Zend_Filter + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + * @version $Id$ + */ + +/** + * @see Zend_Filter_Compress_CompressAbstract + */ + +/** + * Compression adapter for Gzip (ZLib) + * + * @category Zend + * @package Zend_Filter + * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) + * @license http://framework.zend.com/license/new-bsd New BSD License + */ +class Zend_Filter_Compress_Gz extends Zend_Filter_Compress_CompressAbstract +{ + /** + * Compression Options + * array( + * 'level' => Compression level 0-9 + * 'mode' => Compression mode, can be 'compress', 'deflate' + * 'archive' => Archive to use + * ) + * + * @var array + */ + protected $_options = array( + 'level' => 9, + 'mode' => 'compress', + 'archive' => null, + ); + + /** + * Class constructor + * + * @param array|Zend_Config|null $options (Optional) Options to set + */ + public function __construct($options = null) + { + if (!extension_loaded('zlib')) { + throw new Zend_Filter_Exception('This filter needs the zlib extension'); + } + parent::__construct($options); + } + + /** + * Returns the set compression level + * + * @return integer + */ + public function getLevel() + { + return $this->_options['level']; + } + + /** + * Sets a new compression level + * + * @param integer $level + * @return Zend_Filter_Compress_Gz + */ + public function setLevel($level) + { + if (($level < 0) || ($level > 9)) { + throw new Zend_Filter_Exception('Level must be between 0 and 9'); + } + + $this->_options['level'] = (int) $level; + return $this; + } + + /** + * Returns the set compression mode + * + * @return string + */ + public function getMode() + { + return $this->_options['mode']; + } + + /** + * Sets a new compression mode + * + * @param string $mode Supported are 'compress', 'deflate' and 'file' + */ + public function setMode($mode) + { + if (($mode != 'compress') && ($mode != 'deflate')) { + throw new Zend_Filter_Exception('Given compression mode not supported'); + } + + $this->_options['mode'] = $mode; + return $this; + } + + /** + * Returns the set archive + * + * @return string + */ + public function getArchive() + { + return $this->_options['archive']; + } + + /** + * Sets the archive to use for de-/compression + * + * @param string $archive Archive to use + * @return Zend_Filter_Compress_Gz + */ + public function setArchive($archive) + { + $this->_options['archive'] = (string) $archive; + return $this; + } + + /** + * Compresses the given content + * + * @param string $content + * @return string + */ + public function compress($content) + { + $archive = $this->getArchive(); + if (!empty($archive)) { + $file = gzopen($archive, 'w' . $this->getLevel()); + if (!$file) { + throw new Zend_Filter_Exception("Error opening the archive '" . $this->_options['archive'] . "'"); + } + + gzwrite($file, $content); + gzclose($file); + $compressed = true; + } else if ($this->_options['mode'] == 'deflate') { + $compressed = gzdeflate($content, $this->getLevel()); + } else { + $compressed = gzcompress($content, $this->getLevel()); + } + + if (!$compressed) { + throw new Zend_Filter_Exception('Error during compression'); + } + + return $compressed; + } + + /** + * Decompresses the given content + * + * @param string $content + * @return string + */ + public function decompress($content) + { + $archive = $this->getArchive(); + $mode = $this->getMode(); + if (@file_exists($content)) { + $archive = $content; + } + + if (@file_exists($archive)) { + $handler = fopen($archive, "rb"); + if (!$handler) { + throw new Zend_Filter_Exception("Error opening the archive '" . $archive . "'"); + } + + fseek($handler, -4, SEEK_END); + $packet = fread($handler, 4); + $bytes = unpack("V", $packet); + $size = end($bytes); + fclose($handler); + + $file = gzopen($archive, 'r'); + $compressed = gzread($file, $size); + gzclose($file); + } else if ($mode == 'deflate') { + $compressed = gzinflate($content); + } else { + $compressed = gzuncompress($content); + } + + if (!$compressed) { + throw new Zend_Filter_Exception('Error during compression'); + } + + return $compressed; + } + + /** + * Returns the adapter name + * + * @return string + */ + public function toString() + { + return 'Gz'; + } +} |