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<?php
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/**
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* @file
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* Archiver implementations provided by the system module.
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*/
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/**
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* Archiver for .tar files.
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*/
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class ArchiverTar implements ArchiverInterface {
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/**
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* The underlying Archive_Tar instance that does the heavy lifting.
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*
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* @var Archive_Tar
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*/
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protected $tar;
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public function __construct($file_path) {
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$this->tar = new Archive_Tar($file_path);
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}
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public function add($file_path) {
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$this->tar->add($file_path);
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return $this;
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}
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public function remove($file_path) {
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// @todo Archive_Tar doesn't have a remove operation
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// so we'll have to simulate it somehow, probably by
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// creating a new archive with everything but the removed
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// file.
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return $this;
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}
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public function extract($path, Array $files = array()) {
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if ($files) {
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$this->tar->extractList($files, $path);
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}
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else {
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$this->tar->extract($path);
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}
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return $this;
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}
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public function listContents() {
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$files = array();
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foreach ($this->tar->listContent() as $file_data) {
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$files[] = $file_data['filename'];
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}
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return $files;
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}
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/**
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* Retrieve the tar engine itself.
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*
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* In some cases it may be necessary to directly access the underlying
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* Archive_Tar object for implementation-specific logic. This is for advanced
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* use only as it is not shared by other implementations of ArchiveInterface.
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*
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* @return
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* The Archive_Tar object used by this object.
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*/
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public function getArchive() {
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return $this->tar;
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}
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}
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/**
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* Archiver for .zip files.
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*
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* @link http://php.net/zip
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*/
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class ArchiverZip implements ArchiverInterface {
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/**
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* The underlying ZipArchive instance that does the heavy lifting.
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*
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* @var ZipArchive
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*/
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protected $zip;
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public function __construct($file_path) {
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$this->zip = new ZipArchive();
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if ($this->zip->open($file_path) !== TRUE) {
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// @todo: This should be an interface-specific exception some day.
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throw new Exception(t('Cannot open %file_path', array('%file_path' => $file_path)));
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}
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}
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public function add($file_path) {
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$this->zip->addFile($file_path);
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return $this;
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}
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public function remove($file_path) {
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$this->zip->deleteName($file_path);
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return $this;
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}
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public function extract($path, Array $files = array()) {
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if ($files) {
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$this->zip->extractTo($path, $files);
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}
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else {
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$this->zip->extractTo($path);
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}
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return $this;
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}
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public function listContents() {
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$files = array();
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for ($i=0; $i < $this->zip->numFiles; $i++) {
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$files[] = $this->zip->getNameIndex($i);
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}
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return $files;
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}
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/**
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* Retrieve the zip engine itself.
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*
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* In some cases it may be necessary to directly access the underlying
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* ZipArchive object for implementation-specific logic. This is for advanced
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* use only as it is not shared by other implementations of ArchiveInterface.
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*
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* @return
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* The ZipArchive object used by this object.
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*/
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public function getArchive() {
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return $this->zip;
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}
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}
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