139 Zeilen
4.1 KiB
PHP
139 Zeilen
4.1 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Compress a single file to Gzip format
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*
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* PHP versions 4 and 5
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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., 59 Temple Place, Suite 330,Boston,MA 02111-1307 USA
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*
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* @category File Formats
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* @package File_Archive
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* @author Vincent Lascaux <vincentlascaux@php.net>
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* @copyright 1997-2005 The PHP Group
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* @license http://www.gnu.org/copyleft/lesser.html LGPL
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* @version CVS: $Id: Gzip.php 2 2010-11-23 14:32:26Z oldperl $
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* @link http://pear.php.net/package/File_Archive
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*/
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require_once "File/Archive/Writer.php";
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/**
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* Compress a single file to Gzip format
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*/
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class File_Archive_Writer_Gzip extends File_Archive_Writer
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{
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var $compressionLevel=9;
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var $gzfile;
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var $tmpName;
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var $nbFiles = 0;
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var $innerWriter;
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var $autoClose;
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var $filename;
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var $stat;
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/**
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* @param string $filename Name to give to the archive
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* @param File_Archive_Writer $innerWriter The inner writer to which the
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* compressed data will be written
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* @param array $stat The stat of the archive (see the PHP stat() function).
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* No element are required in this array
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* @param bool $autoClose Indicate if the inner writer must be closed when
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* closing this
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*/
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function File_Archive_Writer_Gzip($filename, &$innerWriter,
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$stat = array(), $autoClose = true)
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{
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$this->innerWriter =& $innerWriter;
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$this->autoClose = $autoClose;
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$this->filename = $filename;
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$this->stat = $stat;
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if ($this->filename === null) {
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$this->newFile(null);
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}
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$compressionLevel = File_Archive::getOption('gzCompressionLevel', 9);
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}
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/**
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* Set the compression level
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*
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* @param int $compressionLevel From 0 (no compression) to 9 (best
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* compression)
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*/
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function setCompressionLevel($compressionLevel)
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{
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$this->compressionLevel = $compressionLevel;
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}
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/**
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* @see File_Archive_Writer::newFile()
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*
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* Check that one single file is written in the GZip archive
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*/
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function newFile($filename, $stat = array(),
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$mime = "application/octet-stream")
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{
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if ($this->nbFiles > 1) {
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return PEAR::raiseError("A Gz archive can only contain one single file.".
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"Use Tgz archive to be able to write several files");
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}
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$this->nbFiles++;
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$this->tmpName = tempnam(File_Archive::getOption('tmpDirectory'), 'far');
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$this->gzfile = gzopen($this->tmpName, 'w'.$this->compressionLevel);
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return true;
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}
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/**
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* Actually write the tmp file to the inner writer
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* Close and delete temporary file
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*
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* @see File_Archive_Writer::close()
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*/
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function close()
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{
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gzclose($this->gzfile);
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if ($this->filename === null) {
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//Assume innerWriter is already opened on a file...
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$this->innerWriter->writeFile($this->tmpName);
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unlink($this->tmpName);
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} else {
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$this->innerWriter->newFromTempFile(
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$this->tmpName, $this->filename, $this->stat, 'application/x-compressed'
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);
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}
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if ($this->autoClose) {
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return $this->innerWriter->close();
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}
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}
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/**
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* @see File_Archive_Writer::writeData()
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*/
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function writeData($data)
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{
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gzwrite($this->gzfile, $data);
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}
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}
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?>
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