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\Yui; |
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13 | |
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14 | use Assetic\Asset\AssetInterface; |
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15 | use Assetic\Filter\FilterInterface; |
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16 | use Assetic\Exception\FilterException; |
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17 | use Symfony\Component\Process\ProcessBuilder; |
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18 | |
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19 | /** |
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20 | * Base YUI compressor filter. |
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21 | * |
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22 | * @link http://developer.yahoo.com/yui/compressor/ |
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23 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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24 | */ |
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25 | abstract class BaseCompressorFilter implements FilterInterface |
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26 | { |
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27 | private $jarPath; |
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28 | private $javaPath; |
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29 | private $charset; |
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30 | private $lineBreak; |
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31 | |
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32 | public function __construct($jarPath, $javaPath = '/usr/bin/java') |
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33 | { |
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34 | $this->jarPath = $jarPath; |
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35 | $this->javaPath = $javaPath; |
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36 | } |
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37 | |
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38 | public function setCharset($charset) |
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39 | { |
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40 | $this->charset = $charset; |
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41 | } |
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42 | |
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43 | public function setLineBreak($lineBreak) |
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44 | { |
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45 | $this->lineBreak = $lineBreak; |
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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 | } |
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51 | |
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52 | /** |
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53 | * Compresses a string. |
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54 | * |
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55 | * @param string $content The content to compress |
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56 | * @param string $type The type of content, either "js" or "css" |
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57 | * @param array $options An indexed array of additional options |
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58 | * |
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59 | * @return string The compressed content |
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60 | */ |
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61 | protected function compress($content, $type, $options = array()) |
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62 | { |
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63 | $pb = new ProcessBuilder(array( |
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64 | $this->javaPath, |
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65 | '-jar', |
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66 | $this->jarPath, |
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67 | )); |
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68 | |
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69 | foreach ($options as $option) { |
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70 | $pb->add($option); |
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71 | } |
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72 | |
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73 | if (null !== $this->charset) { |
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74 | $pb->add('--charset')->add($this->charset); |
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75 | } |
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76 | |
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77 | if (null !== $this->lineBreak) { |
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78 | $pb->add('--line-break')->add($this->lineBreak); |
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79 | } |
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80 | |
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81 | // input and output files |
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82 | $tempDir = realpath(sys_get_temp_dir()); |
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83 | $input = tempnam($tempDir, 'YUI-IN-'); |
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84 | $output = tempnam($tempDir, 'YUI-OUT-'); |
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85 | file_put_contents($input, $content); |
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86 | $pb->add('-o')->add($output)->add('--type')->add($type)->add($input); |
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87 | |
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88 | $proc = $pb->getProcess(); |
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89 | $code = $proc->run(); |
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90 | unlink($input); |
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91 | |
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92 | if (0 < $code) { |
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93 | if (file_exists($output)) { |
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94 | unlink($output); |
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95 | } |
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96 | |
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97 | throw FilterException::fromProcess($proc)->setInput($content); |
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98 | } |
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99 | |
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100 | if (!file_exists($output)) { |
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101 | throw new \RuntimeException('Error creating output file.'); |
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102 | } |
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103 | |
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104 | $retval = file_get_contents($output); |
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105 | unlink($output); |
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106 | |
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107 | return $retval; |
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108 | } |
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109 | } |
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