[7265] | 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 | * Runs assets through pngout. |
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| 20 | * |
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| 21 | * @link http://advsys.net/ken/utils.htm#pngout |
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| 22 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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| 23 | */ |
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| 24 | class PngoutFilter implements FilterInterface |
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| 25 | { |
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| 26 | // -c# |
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| 27 | const COLOR_GREY = '0'; |
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| 28 | const COLOR_RGB = '2'; |
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| 29 | const COLOR_PAL = '3'; |
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| 30 | const COLOR_GRAY_ALPHA = '4'; |
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| 31 | const COLOR_RGB_ALPHA = '6'; |
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| 32 | |
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| 33 | // -f# |
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| 34 | const FILTER_NONE = '0'; |
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| 35 | const FILTER_X = '1'; |
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| 36 | const FILTER_Y = '2'; |
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| 37 | const FILTER_X_Y = '3'; |
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| 38 | const FILTER_PAETH = '4'; |
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| 39 | const FILTER_MIXED = '5'; |
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| 40 | |
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| 41 | // -s# |
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| 42 | const STRATEGY_XTREME = '0'; |
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| 43 | const STRATEGY_INTENSE = '1'; |
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| 44 | const STRATEGY_LONGEST_MATCH = '2'; |
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| 45 | const STRATEGY_HUFFMAN_ONLY = '3'; |
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| 46 | const STRATEGY_UNCOMPRESSED = '4'; |
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| 47 | |
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| 48 | private $pngoutBin; |
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| 49 | private $color; |
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| 50 | private $filter; |
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| 51 | private $strategy; |
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| 52 | private $blockSplitThreshold; |
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| 53 | |
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| 54 | /** |
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| 55 | * Constructor. |
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| 56 | * |
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| 57 | * @param string $pngoutBin Path to the pngout binary |
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| 58 | */ |
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| 59 | public function __construct($pngoutBin = '/usr/bin/pngout') |
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| 60 | { |
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| 61 | $this->pngoutBin = $pngoutBin; |
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| 62 | } |
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| 63 | |
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| 64 | public function setColor($color) |
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| 65 | { |
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| 66 | $this->color = $color; |
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| 67 | } |
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| 68 | |
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| 69 | public function setFilter($filter) |
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| 70 | { |
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| 71 | $this->filter = $filter; |
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| 72 | } |
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| 73 | |
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| 74 | public function setStrategy($strategy) |
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| 75 | { |
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| 76 | $this->strategy = $strategy; |
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| 77 | } |
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| 78 | |
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| 79 | public function setBlockSplitThreshold($blockSplitThreshold) |
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| 80 | { |
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| 81 | $this->blockSplitThreshold = $blockSplitThreshold; |
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| 82 | } |
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| 83 | |
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| 84 | public function filterLoad(AssetInterface $asset) |
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| 85 | { |
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| 86 | } |
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| 87 | |
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| 88 | public function filterDump(AssetInterface $asset) |
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| 89 | { |
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| 90 | $pb = new ProcessBuilder(array($this->pngoutBin)); |
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| 91 | |
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| 92 | if (null !== $this->color) { |
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| 93 | $pb->add('-c'.$this->color); |
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| 94 | } |
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| 95 | |
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| 96 | if (null !== $this->filter) { |
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| 97 | $pb->add('-f'.$this->filter); |
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| 98 | } |
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| 99 | |
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| 100 | if (null !== $this->strategy) { |
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| 101 | $pb->add('-s'.$this->strategy); |
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| 102 | } |
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| 103 | |
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| 104 | if (null !== $this->blockSplitThreshold) { |
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| 105 | $pb->add('-b'.$this->blockSplitThreshold); |
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| 106 | } |
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| 107 | |
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| 108 | $pb->add($input = tempnam(sys_get_temp_dir(), 'assetic_pngout')); |
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| 109 | file_put_contents($input, $asset->getContent()); |
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| 110 | |
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| 111 | $output = tempnam(sys_get_temp_dir(), 'assetic_pngout'); |
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| 112 | unlink($output); |
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| 113 | $pb->add($output .= '.png'); |
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| 114 | |
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| 115 | $proc = $pb->getProcess(); |
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| 116 | $code = $proc->run(); |
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| 117 | |
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| 118 | if (0 < $code) { |
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| 119 | unlink($input); |
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| 120 | throw FilterException::fromProcess($proc)->setInput($asset->getContent()); |
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| 121 | } |
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| 122 | |
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| 123 | $asset->setContent(file_get_contents($output)); |
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| 124 | |
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| 125 | unlink($input); |
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| 126 | unlink($output); |
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| 127 | } |
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| 128 | } |
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