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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 $dest
* @return boolean|null
*/
function rename($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 string $path
* @return array
*/
function getFolder($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 $dest
* @return boolean|null
*/
function extractFile($path, $dest) {
$fp = $this->zip->getStream($path);
file_put_contents($dest, $fp);
}
/**
* 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\Files\Stream\Close::registerCallback($tmpFile, array($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);
}
}
/**
* @param string $path
* @return string
*/
private function stripPath($path) {
if(!$path || $path[0]=='/') {
return substr($path, 1);
}else{
return $path;
}
}
}
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