CHIEFSOFT\ameye
100 lines
2.8 KiB
PHP
100 lines
2.8 KiB
PHP
<?php
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/**
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* @file classes/file/FileArchive.php
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*
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* Copyright (c) 2014-2021 Simon Fraser University
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* Copyright (c) 2000-2021 John Willinsky
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* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
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*
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* @class FileArchive
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*
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* @ingroup file
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*
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* @brief Class provides functionality for creating an archive of files.
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*/
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namespace PKP\file;
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use Exception;
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use PKP\config\Config;
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use ZipArchive;
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class FileArchive
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{
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/**
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* Assembles an array of filenames into either a tar.gz or a .zip
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* file, based on what is available. Returns a string representing
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* the path to the archive on disk.
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*
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* @param array $files the files to add, in an associative array of the
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* format ('serverPath' => 'clientFilename')
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* @param string $filesDir a path to the files on disk.
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*
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* @return string the path to the archive.
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*/
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public function create($files, $filesDir)
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{
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// Create a temporary file.
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$archivePath = tempnam('/tmp', 'sf-');
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if ($archivePath === false) {
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return false;
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}
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unlink($archivePath);
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// attempt to use Zip first, if it is available. Otherwise
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// fall back to the tar CLI.
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$zipTest = false;
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if (self::zipFunctional()) {
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$zipTest = true;
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$zip = new ZipArchive();
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if ($zip->open($archivePath, ZipArchive::CREATE) == true) {
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foreach ($files as $serverPath => $clientFilename) {
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$zip->addFile($filesDir . '/' . $serverPath, $clientFilename);
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}
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$zip->close();
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}
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} elseif (self::tarFunctional()) {
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// Create the archive and download the file.
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exec(
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Config::getVar('cli', 'tar') . ' -c -z ' .
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'-f ' . escapeshellarg($archivePath) . ' ' .
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'-C ' . escapeshellarg($filesDir) . ' ' .
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implode(' ', array_map('escapeshellarg', array_keys($files)))
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);
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} else {
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throw new Exception('No archive tool is available!');
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}
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return $archivePath;
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}
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/**
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* Return true if the zip extension is loaded.
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*
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* @return bool
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*/
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public static function zipFunctional()
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{
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return (extension_loaded('zip'));
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}
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/**
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* Return true if the tar tools are configured.
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*/
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public static function tarFunctional()
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{
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$tarBinary = Config::getVar('cli', 'tar');
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return !empty($tarBinary) && file_exists($tarBinary);
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}
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public static function isFunctional()
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{
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return self::zipFunctional() || self::tarFunctional();
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}
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}
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if (!PKP_STRICT_MODE) {
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class_alias('\PKP\file\FileArchive', '\FileArchive');
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}
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