213 Zeilen
6.3 KiB
PHP
213 Zeilen
6.3 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Base class for all the archiveWriters that can only work on complete files
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* (the write data function may be called with small chunks of data)
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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: MemoryArchive.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/Archive.php";
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require_once "File/Archive/Writer/Memory.php";
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/**
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* Base class for all the archiveWriters that can only work on complete files
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* (the write data function may be called with small chunks of data)
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*/
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class File_Archive_Writer_MemoryArchive extends File_Archive_Writer_Archive
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{
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/**
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* @var File_Archive_Writer_Memory A buffer where the data will be put
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* waiting for the file to be complete
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* @access private
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*/
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var $buffer = '';
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/**
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* @var string Name of the file which data are coming
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* @access private
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*/
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var $currentFilename = null;
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/**
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* @var array Stats of the file which data are coming
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* @access private
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*/
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var $currentStat = null;
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/**
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* @var string URL of the file being treated if it is a physical file
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* @access private
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*/
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var $currentDataFile = null;
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/**
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* @var int Number of times newFile function has been called
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* @access protected
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*/
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var $nbFiles = 0;
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/**
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* @see File_Archive_Writer::File_Archive_Writer()
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*/
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function File_Archive_Writer_MemoryArchive
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($filename, &$t, $stat = array(), $autoClose = true)
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{
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parent::File_Archive_Writer_Archive($filename, $t, $stat, $autoClose);
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}
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/**
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* @see File_Archive_Writer::newFile()
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*/
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function _newFile($filename, $stat = array(),
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$mime = "application/octet-stream")
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{
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if ($this->nbFiles == 0) {
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$error = $this->sendHeader();
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if (PEAR::isError($error)) {
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return $error;
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}
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} else {
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$error = $this->flush();
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if (PEAR::isError($error)) {
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return $error;
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}
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}
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$this->nbFiles++;
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$this->currentFilename = $filename;
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$this->currentStat = $stat;
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return true;
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}
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/**
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* @see File_Archive_Writer::close()
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*/
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function close()
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{
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$error = $this->flush();
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if (PEAR::isError($error)) {
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return $error;
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}
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$error = $this->sendFooter();
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if (PEAR::isError($error)) {
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return $error;
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}
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return parent::close();
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}
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/**
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* Indicate that all the data have been read from the current file
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* and send it to appendFileData
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* Send the current data to the appendFileData function
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*
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* @access private
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*/
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function flush()
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{
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if ($this->currentFilename !== null) {
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if ($this->currentDataFile !== null) {
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$error = $this->appendFile($this->currentFilename,
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$this->currentDataFile);
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} else {
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$error = $this->appendFileData($this->currentFilename,
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$this->currentStat,
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$this->buffer);
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}
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if (PEAR::isError($error)) {
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return $error;
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}
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$this->currentFilename = null;
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$this->currentDataFile = null;
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$this->buffer = '';
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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($data)
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{
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if ($this->currentDataFile !== null) {
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$this->buffer .= file_get_contents($this->currentDataFile);
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$this->currentDataFile = null;
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}
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$this->buffer .= $data;
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}
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/**
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* @see File_Archive_Writer::writeFile()
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*/
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function writeFile($filename)
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{
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if ($this->currentDataFile === null && empty($this->buffer)) {
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$this->currentDataFile = $filename;
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} else {
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if ($this->currentDataFile !== null) {
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$this->buffer .= file_get_contents($this->currentDataFile);
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$this->currentDataFile = null;
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}
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$this->buffer .= file_get_contents($filename);
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}
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}
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//MUST REWRITE FUNCTIONS
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/**
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* The subclass must treat the data $data
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* $data is the entire data of the filename $filename
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* $stat is the stat of the file
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*
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* @access protected
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*/
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function appendFileData($filename, $stat, &$data) { }
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//SHOULD REWRITE FUNCTIONS
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/**
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* The subclass may rewrite the sendHeader function if it needs to execute
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* code before the first file
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*
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* @access protected
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*/
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function sendHeader() { }
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/**
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* The subclass may rewrite the sendFooter function if it needs to execute
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* code before closing the archive
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*
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* @access protected
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*/
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function sendFooter() { }
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/**
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* The subclass may rewrite this class if it knows an efficient way to treat
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* a physical file.
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*
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* @access protected
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*/
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function appendFile($filename, $dataFilename)
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{
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return $this->appendFileData(
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$filename,
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stat($dataFilename),
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file_get_contents($dataFilename));
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}
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}
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?>
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