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 | * UglifyJs filter. |
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20 | * |
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21 | * @link https://github.com/mishoo/UglifyJS |
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22 | * @author André Roaldseth <andre@roaldseth.net> |
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23 | */ |
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24 | class UglifyJsFilter implements FilterInterface |
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25 | { |
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26 | private $uglifyJsPath; |
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27 | private $nodeJsPath; |
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28 | |
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29 | private $noCopyright; |
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30 | private $beautify; |
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31 | private $unsafe; |
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32 | |
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33 | /** |
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34 | * @param string $uglifyJsPath Absolute path to the uglifyjs executable |
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35 | * @param string $nodeJsPath Absolute path to the folder containg node.js executable |
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36 | */ |
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37 | public function __construct($uglifyJsPath, $nodeJsPath = null) |
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38 | { |
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39 | $this->uglifyJsPath = $uglifyJsPath; |
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40 | $this->nodeJsPath = $nodeJsPath; |
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41 | } |
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42 | |
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43 | /** |
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44 | * Removes the first block of comments as well |
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45 | * @param bool $noCopyright True to enable |
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46 | */ |
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47 | public function setNoCopyright($noCopyright) |
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48 | { |
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49 | $this->noCopyright = $noCopyright; |
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50 | } |
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51 | |
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52 | /** |
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53 | * Output indented code |
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54 | * @param bool $beautify True to enable |
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55 | */ |
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56 | public function setBeautify($beautify) |
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57 | { |
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58 | $this->beautify = $beautify; |
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59 | } |
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60 | |
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61 | /** |
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62 | * Enable additional optimizations that are known to be unsafe in some situations. |
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63 | * @param bool $unsafe True to enable |
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64 | */ |
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65 | public function setUnsafe($unsafe) |
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66 | { |
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67 | $this->unsafe = $unsafe; |
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68 | } |
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69 | |
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70 | /** |
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71 | * @see Assetic\Filter\FilterInterface::filterLoad() |
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72 | */ |
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73 | public function filterLoad(AssetInterface $asset) |
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74 | { |
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75 | } |
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76 | |
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77 | /** |
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78 | * Run the asset through UglifyJs |
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79 | * |
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80 | * @see Assetic\Filter\FilterInterface::filterDump() |
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81 | */ |
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82 | public function filterDump(AssetInterface $asset) |
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83 | { |
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84 | $executables = array(); |
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85 | |
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86 | if ($this->nodeJsPath !== null) { |
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87 | $executables[] = $this->nodeJsPath; |
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88 | } |
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89 | |
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90 | $executables[] = $this->uglifyJsPath; |
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91 | |
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92 | $pb = new ProcessBuilder($executables); |
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93 | |
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94 | if ($this->noCopyright) { |
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95 | $pb->add('--no-copyright'); |
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96 | } |
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97 | |
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98 | if ($this->beautify) { |
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99 | $pb->add('--beautify'); |
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100 | } |
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101 | |
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102 | if ($this->unsafe) { |
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103 | $pb->add('--unsafe'); |
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104 | } |
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105 | |
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106 | // input and output files |
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107 | $input = tempnam(sys_get_temp_dir(), 'input'); |
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108 | $output = tempnam(sys_get_temp_dir(), 'output'); |
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109 | |
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110 | file_put_contents($input, $asset->getContent()); |
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111 | $pb->add('-o')->add($output)->add($input); |
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112 | |
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113 | $proc = $pb->getProcess(); |
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114 | $code = $proc->run(); |
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115 | unlink($input); |
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116 | |
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117 | if (0 < $code) { |
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118 | if (file_exists($output)) { |
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119 | unlink($output); |
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120 | } |
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121 | |
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122 | if (127 === $code) { |
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123 | throw new \RuntimeException('Path to node executable could not be resolved.'); |
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124 | } |
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125 | |
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126 | throw FilterException::fromProcess($proc)->setInput($asset->getContent()); |
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127 | } |
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128 | |
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129 | if (!file_exists($output)) { |
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130 | throw new \RuntimeException('Error creating output file.'); |
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131 | } |
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132 | |
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133 | $uglifiedJs = file_get_contents($output); |
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134 | unlink($output); |
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135 | |
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136 | $asset->setContent($uglifiedJs); |
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137 | } |
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138 | } |
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