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121 lines
3.0 KiB
121 lines
3.0 KiB
<?php
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// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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namespace Tiki\Lib\Unoconv;
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use Unoconv\Unoconv;
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/**
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* Wrapper of the library Unoconv, for pdf convertion
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*/
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class UnoconvLib
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{
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protected $unoconv;
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public static $homeEnvCopy;
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const DEFAULT_PORT = 2002;
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/**
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* UnoconvLib constructor.
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*/
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public function __construct()
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{
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if (! static::isLibraryAvailable()) {
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return;
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}
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global $prefs;
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$config = [
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'unoconv.binaries' => $prefs['alchemy_unoconv_path'],
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'timeout' => $prefs['alchemy_unoconv_timeout'] ?: 60,
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'unoconv.port' => $prefs['alchemy_unoconv_port'],
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];
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$this->unoconv = Unoconv::create($config);
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}
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/**
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* Check if Unoconv is available
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*
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* @return bool true if the base library is available
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*/
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public static function isLibraryAvailable()
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{
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return class_exists('Unoconv\Unoconv');
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}
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/**
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* Convert any document from and to any LibreOffice supported format
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*
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* @param string $sourcePath the patch to read the file
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* @param string $destinationPath the path to store the result
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* @param string $type media type of the file to be converted
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* @throws \Exception
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*/
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public function convertFile($sourcePath, $destinationPath, $type = 'pdf')
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{
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try {
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self::setHomeEnv();
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$this->unoconv->transcode($sourcePath, $type, $destinationPath);
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self::revertHomeEnv();
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} catch (\Exception $e) {
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self::revertHomeEnv();
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throw $e;
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}
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}
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/**
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* Sets home path to cache so unoconv scripts can write into directory
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*/
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public static function setHomeEnv()
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{
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global $tikipath, $tikidomain;
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$envHomeDefined = isset($_ENV) && array_key_exists('HOME', $_ENV);
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if ($envHomeDefined) {
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self::$homeEnvCopy = $_ENV['HOME'];
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}
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// set a proper home folder
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$_ENV['HOME'] = implode(DIRECTORY_SEPARATOR, [$tikipath, 'temp', 'cache', $tikidomain]);
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}
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/**
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* Resets home env path after unoconv scripts run
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*/
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protected function revertHomeEnv()
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{
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if (! empty(self::$homeEnvCopy)) {
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$_ENV['HOME'] = self::$homeEnvCopy;
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self::$homeEnvCopy = null;
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} else {
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unset($_ENV['HOME']);
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}
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}
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/**
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* Check if the port for alchemy lib is currently being used
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* @return bool True if port is not in use, False otherwise
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*/
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public static function isPortAvailable()
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{
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global $prefs;
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$port = $prefs['alchemy_unoconv_port'] ?: self::DEFAULT_PORT;
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$socket = @fsockopen(gethostname(), $port, $error, $error_details, 10);
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if ($socket) {
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fclose($socket);
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}
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return $socket === false;
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}
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}
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