1<?php
2
3/*
4 * This file is part of the Assetic package, an OpenSky project.
5 *
6 * (c) 2010-2014 OpenSky Project Inc
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12namespace Assetic\Filter;
13
14use Assetic\Asset\AssetInterface;
15use Assetic\Exception\FilterException;
16use Assetic\Util\FilesystemUtils;
17
18/**
19 * Compiles TypeScript into JavaScript.
20 *
21 * @link http://www.typescriptlang.org/
22 * @author Jarrod Nettles <jarrod.nettles@icloud.com>
23 */
24class TypeScriptFilter extends BaseNodeFilter
25{
26    private $tscBin;
27    private $nodeBin;
28
29    public function __construct($tscBin = '/usr/bin/tsc', $nodeBin = null)
30    {
31        $this->tscBin = $tscBin;
32        $this->nodeBin = $nodeBin;
33    }
34
35    public function filterLoad(AssetInterface $asset)
36    {
37        $pb = $this->createProcessBuilder($this->nodeBin
38            ? array($this->nodeBin, $this->tscBin)
39            : array($this->tscBin));
40
41        if ($sourcePath = $asset->getSourcePath()) {
42            $templateName = basename($sourcePath);
43        } else {
44            $templateName = 'asset';
45        }
46
47        $inputDirPath = FilesystemUtils::createThrowAwayDirectory('typescript_in');
48        $inputPath = $inputDirPath.DIRECTORY_SEPARATOR.$templateName.'.ts';
49        $outputPath = FilesystemUtils::createTemporaryFile('typescript_out');
50
51        file_put_contents($inputPath, $asset->getContent());
52
53        $pb->add($inputPath)->add('--out')->add($outputPath);
54
55        $proc = $pb->getProcess();
56        $code = $proc->run();
57        unlink($inputPath);
58        rmdir($inputDirPath);
59
60        if (0 !== $code) {
61            if (file_exists($outputPath)) {
62                unlink($outputPath);
63            }
64            throw FilterException::fromProcess($proc)->setInput($asset->getContent());
65        }
66
67        if (!file_exists($outputPath)) {
68            throw new \RuntimeException('Error creating output file.');
69        }
70
71        $compiledJs = file_get_contents($outputPath);
72        unlink($outputPath);
73
74        $asset->setContent($compiledJs);
75    }
76
77    public function filterDump(AssetInterface $asset)
78    {
79    }
80}
81