1 | <?php |
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2 | |
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3 | /* |
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4 | * This file is part of the Assetic package, an OpenSky project. |
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5 | * |
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6 | * (c) 2010-2012 OpenSky Project Inc |
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7 | * |
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8 | * For the full copyright and license information, please view the LICENSE |
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9 | * file that was distributed with this source code. |
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10 | */ |
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11 | |
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12 | namespace Assetic\Filter; |
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13 | |
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14 | use Assetic\Asset\AssetInterface; |
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15 | use Assetic\Exception\FilterException; |
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16 | use Symfony\Component\Process\ProcessBuilder; |
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17 | |
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18 | /** |
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19 | * Compiles Handlebars templates into Javascript. |
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20 | * |
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21 | * @link http://handlebarsjs.com/ |
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22 | * @author Keyvan Akbary <keyvan@funddy.com> |
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23 | */ |
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24 | class HandlebarsFilter implements FilterInterface |
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25 | { |
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26 | private $handlebarsPath; |
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27 | private $nodePath; |
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28 | |
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29 | private $minimize = false; |
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30 | private $simple = false; |
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31 | |
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32 | public function __construct($handlebarsPath = '/usr/bin/handlebars', $nodePath = null) |
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33 | { |
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34 | $this->handlebarsPath = $handlebarsPath; |
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35 | $this->nodePath = $nodePath; |
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36 | } |
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37 | |
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38 | public function setMinimize($minimize) |
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39 | { |
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40 | $this->minimize = $minimize; |
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41 | } |
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42 | |
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43 | public function setSimple($simple) |
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44 | { |
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45 | $this->simple = $simple; |
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46 | } |
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47 | |
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48 | public function filterLoad(AssetInterface $asset) |
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49 | { |
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50 | $executables = array(); |
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51 | |
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52 | if ($this->nodePath !== null) { |
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53 | $executables[] = $this->nodePath; |
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54 | } |
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55 | |
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56 | $executables[] = $this->handlebarsPath; |
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57 | |
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58 | $processBuilder = new ProcessBuilder($executables); |
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59 | |
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60 | $templateName = basename($asset->getSourcePath()); |
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61 | |
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62 | $inputDirPath = sys_get_temp_dir().DIRECTORY_SEPARATOR.uniqid('input_dir'); |
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63 | $inputPath = $inputDirPath.DIRECTORY_SEPARATOR.$templateName; |
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64 | $outputPath = tempnam(sys_get_temp_dir(), 'output'); |
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65 | |
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66 | mkdir($inputDirPath); |
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67 | file_put_contents($inputPath, $asset->getContent()); |
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68 | |
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69 | $processBuilder->add($inputPath)->add('-f')->add($outputPath); |
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70 | |
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71 | if ($this->minimize) { |
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72 | $processBuilder->add('--min'); |
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73 | } |
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74 | |
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75 | if ($this->simple) { |
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76 | $processBuilder->add('--simple'); |
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77 | } |
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78 | |
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79 | $process = $processBuilder->getProcess(); |
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80 | $returnCode = $process->run(); |
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81 | |
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82 | unlink($inputPath); |
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83 | rmdir($inputDirPath); |
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84 | |
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85 | if (127 === $returnCode) { |
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86 | throw new \RuntimeException('Path to node executable could not be resolved.'); |
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87 | } |
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88 | |
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89 | if (0 < $returnCode) { |
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90 | if (file_exists($outputPath)) { |
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91 | unlink($outputPath); |
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92 | } |
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93 | throw FilterException::fromProcess($process)->setInput($asset->getContent()); |
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94 | } |
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95 | |
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96 | if (!file_exists($outputPath)) { |
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97 | throw new \RuntimeException('Error creating output file.'); |
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98 | } |
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99 | |
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100 | $compiledJs = file_get_contents($outputPath); |
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101 | unlink($outputPath); |
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102 | |
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103 | $asset->setContent($compiledJs); |
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104 | } |
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105 | |
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106 | public function filterDump(AssetInterface $asset) |
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107 | { |
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108 | } |
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109 | } |
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