nextcloud/lib/archive/zip.php

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4.5 KiB
PHP
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<?php
/**
* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
class OC_Archive_ZIP extends OC_Archive{
/**
* @var ZipArchive zip
*/
private $zip=null;
private $path;
function __construct($source){
$this->path=$source;
$this->zip=new ZipArchive();
if($this->zip->open($source,ZipArchive::CREATE)){
}else{
OCP\Util::writeLog('files_archive','Error while opening archive '.$source,OCP\Util::WARN);
}
}
/**
* add an empty folder to the archive
* @param string path
* @return bool
*/
function addFolder($path){
return $this->zip->addEmptyDir($path);
}
/**
* add a file to the archive
* @param string path
* @param string source either a local file or string data
* @return bool
*/
function addFile($path,$source=''){
if($source and $source[0]=='/' and file_exists($source)){
$result=$this->zip->addFile($source,$path);
}else{
$result=$this->zip->addFromString($path,$source);
}
if($result){
$this->zip->close();//close and reopen to save the zip
$this->zip->open($this->path);
}
return $result;
}
/**
* rename a file or folder in the archive
* @param string source
* @param string dest
* @return bool
*/
function rename($source,$dest){
$source=$this->stripPath($source);
$dest=$this->stripPath($dest);
$this->zip->renameName($source,$dest);
}
/**
* get the uncompressed size of a file in the archive
* @param string path
* @return int
*/
function filesize($path){
$stat=$this->zip->statName($path);
return $stat['size'];
}
/**
* get the last modified time of a file in the archive
* @param string path
* @return int
*/
function mtime($path){
return filemtime($this->path);
}
/**
* get the files in a folder
* @param path
* @return array
*/
function getFolder($path){
$files=$this->getFiles();
$folderContent=array();
$pathLength=strlen($path);
foreach($files as $file){
if(substr($file,0,$pathLength)==$path and $file!=$path){
if(strrpos(substr($file,0,-1),'/')<=$pathLength){
$folderContent[]=substr($file,$pathLength);
}
}
}
return $folderContent;
}
/**
*get all files in the archive
* @return array
*/
function getFiles(){
$fileCount=$this->zip->numFiles;
$files=array();
for($i=0;$i<$fileCount;$i++){
$files[]=$this->zip->getNameIndex($i);
}
return $files;
}
/**
* get the content of a file
* @param string path
* @return string
*/
function getFile($path){
return $this->zip->getFromName($path);
}
/**
* extract a single file from the archive
* @param string path
* @param string dest
* @return bool
*/
function extractFile($path,$dest){
$fp = $this->zip->getStream($path);
file_put_contents($dest,$fp);
}
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/**
* extract the archive
* @param string path
* @param string dest
* @return bool
*/
function extract($dest){
return $this->zip->extractTo($dest);
}
/**
* check if a file or folder exists in the archive
* @param string path
* @return bool
*/
function fileExists($path){
return ($this->zip->locateName($path)!==false) or ($this->zip->locateName($path.'/')!==false);
}
/**
* remove a file or folder from the archive
* @param string path
* @return bool
*/
function remove($path){
if($this->fileExists($path.'/')){
return $this->zip->deleteName($path.'/');
}else{
return $this->zip->deleteName($path);
}
}
/**
* get a file handler
* @param string path
* @param string mode
* @return resource
*/
function getStream($path,$mode){
if($mode=='r' or $mode=='rb'){
return $this->zip->getStream($path);
}else{//since we cant directly get a writable stream, make a temp copy of the file and put it back in the archive when the stream is closed
if(strrpos($path,'.')!==false){
$ext=substr($path,strrpos($path,'.'));
}else{
$ext='';
}
$tmpFile=OCP\Files::tmpFile($ext);
OC_CloseStreamWrapper::$callBacks[$tmpFile]=array($this,'writeBack');
if($this->fileExists($path)){
$this->extractFile($path,$tmpFile);
}
self::$tempFiles[$tmpFile]=$path;
return fopen('close://'.$tmpFile,$mode);
}
}
private static $tempFiles=array();
/**
* write back temporary files
*/
function writeBack($tmpFile){
if(isset(self::$tempFiles[$tmpFile])){
$this->addFile(self::$tempFiles[$tmpFile],$tmpFile);
unlink($tmpFile);
}
}
private function stripPath($path){
if(!$path || $path[0]=='/'){
return substr($path,1);
}else{
return $path;
}
}
}