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; |
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13 | |
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14 | use Assetic\Util\PathUtils; |
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15 | |
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16 | use Assetic\Asset\AssetInterface; |
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17 | |
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18 | /** |
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19 | * Writes assets to the filesystem. |
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20 | * |
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21 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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22 | * @author Johannes M. Schmitt <schmittjoh@gmail.com> |
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23 | */ |
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24 | class AssetWriter |
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25 | { |
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26 | private $dir; |
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27 | private $varValues; |
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28 | |
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29 | /** |
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30 | * Constructor. |
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31 | * |
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32 | * @param string $dir The base web directory |
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33 | * @param array $varValues |
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34 | * |
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35 | * @throws \InvalidArgumentException if a variable value is not a string |
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36 | */ |
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37 | public function __construct($dir, array $varValues = array()) |
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38 | { |
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39 | foreach ($varValues as $var => $values) { |
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40 | foreach ($values as $value) { |
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41 | if (!is_string($value)) { |
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42 | throw new \InvalidArgumentException(sprintf('All variable values must be strings, but got %s for variable "%s".', json_encode($value), $var)); |
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43 | } |
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44 | } |
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45 | } |
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46 | |
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47 | $this->dir = $dir; |
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48 | $this->varValues = $varValues; |
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49 | } |
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50 | |
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51 | public function writeManagerAssets(AssetManager $am) |
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52 | { |
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53 | foreach ($am->getNames() as $name) { |
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54 | $this->writeAsset($am->get($name)); |
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55 | } |
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56 | } |
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57 | |
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58 | public function writeAsset(AssetInterface $asset) |
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59 | { |
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60 | foreach ($this->getCombinations($asset->getVars()) as $combination) { |
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61 | $asset->setValues($combination); |
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62 | |
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63 | static::write($this->dir.'/'.PathUtils::resolvePath( |
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64 | $asset->getTargetPath(), $asset->getVars(), $asset->getValues()), |
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65 | $asset->dump()); |
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66 | } |
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67 | } |
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68 | |
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69 | private function getCombinations(array $vars) |
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70 | { |
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71 | if (!$vars) { |
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72 | return array(array()); |
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73 | } |
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74 | |
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75 | $combinations = array(); |
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76 | $nbValues = array(); |
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77 | foreach ($this->varValues as $var => $values) { |
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78 | if (!in_array($var, $vars, true)) { |
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79 | continue; |
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80 | } |
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81 | |
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82 | $nbValues[$var] = count($values); |
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83 | } |
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84 | |
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85 | for ($i=array_product($nbValues),$c=$i*2; $i<$c; $i++) { |
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86 | $k = $i; |
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87 | $combination = array(); |
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88 | |
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89 | foreach ($vars as $var) { |
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90 | $combination[$var] = $this->varValues[$var][$k % $nbValues[$var]]; |
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91 | $k = intval($k/$nbValues[$var]); |
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92 | } |
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93 | |
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94 | $combinations[] = $combination; |
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95 | } |
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96 | |
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97 | return $combinations; |
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98 | } |
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99 | |
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100 | protected static function write($path, $contents) |
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101 | { |
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102 | if (!is_dir($dir = dirname($path)) && false === @mkdir($dir, 0777, true)) { |
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103 | throw new \RuntimeException('Unable to create directory '.$dir); |
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104 | } |
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105 | |
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106 | if (false === @file_put_contents($path, $contents)) { |
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107 | throw new \RuntimeException('Unable to write file '.$path); |
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108 | } |
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109 | } |
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110 | } |
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