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\Asset\FileAsset; |
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16 | use Assetic\Asset\HttpAsset; |
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17 | |
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18 | /** |
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19 | * Inlines imported stylesheets. |
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20 | * |
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21 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
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22 | */ |
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23 | class CssImportFilter extends BaseCssFilter |
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24 | { |
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25 | private $importFilter; |
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26 | |
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27 | /** |
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28 | * Constructor. |
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29 | * |
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30 | * @param FilterInterface $importFilter Filter for each imported asset |
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31 | */ |
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32 | public function __construct(FilterInterface $importFilter = null) |
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33 | { |
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34 | $this->importFilter = $importFilter ?: new CssRewriteFilter(); |
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35 | } |
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36 | |
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37 | public function filterLoad(AssetInterface $asset) |
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38 | { |
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39 | $importFilter = $this->importFilter; |
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40 | $sourceRoot = $asset->getSourceRoot(); |
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41 | $sourcePath = $asset->getSourcePath(); |
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42 | |
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43 | $callback = function($matches) use ($importFilter, $sourceRoot, $sourcePath) { |
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44 | if (!$matches['url'] || null === $sourceRoot) { |
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45 | return $matches[0]; |
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46 | } |
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47 | |
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48 | $importRoot = $sourceRoot; |
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49 | |
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50 | if (false !== strpos($matches['url'], '://')) { |
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51 | // absolute |
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52 | list($importScheme, $tmp) = explode('://', $matches['url'], 2); |
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53 | list($importHost, $importPath) = explode('/', $tmp, 2); |
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54 | $importRoot = $importScheme.'://'.$importHost; |
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55 | } elseif (0 === strpos($matches['url'], '//')) { |
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56 | // protocol-relative |
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57 | list($importHost, $importPath) = explode('/', substr($matches['url'], 2), 2); |
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58 | $importHost = '//'.$importHost; |
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59 | } elseif ('/' == $matches['url'][0]) { |
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60 | // root-relative |
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61 | $importPath = substr($matches['url'], 1); |
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62 | } elseif (null !== $sourcePath) { |
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63 | // document-relative |
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64 | $importPath = $matches['url']; |
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65 | if ('.' != $sourceDir = dirname($sourcePath)) { |
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66 | $importPath = $sourceDir.'/'.$importPath; |
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67 | } |
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68 | } else { |
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69 | return $matches[0]; |
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70 | } |
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71 | |
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72 | // ignore other imports |
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73 | if ('css' != pathinfo($importPath, PATHINFO_EXTENSION)) { |
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74 | return $matches[0]; |
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75 | } |
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76 | |
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77 | $importSource = $importRoot.'/'.$importPath; |
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78 | if (false !== strpos($importSource, '://') || 0 === strpos($importSource, '//')) { |
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79 | $import = new HttpAsset($importSource, array($importFilter), true); |
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80 | } elseif (!file_exists($importSource)) { |
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81 | // ignore not found imports |
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82 | return $matches[0]; |
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83 | } else { |
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84 | $import = new FileAsset($importSource, array($importFilter), $importRoot, $importPath); |
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85 | } |
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86 | |
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87 | $import->setTargetPath($sourcePath); |
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88 | |
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89 | return $import->dump(); |
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90 | }; |
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91 | |
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92 | $content = $asset->getContent(); |
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93 | $lastHash = md5($content); |
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94 | |
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95 | do { |
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96 | $content = $this->filterImports($content, $callback); |
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97 | $hash = md5($content); |
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98 | } while ($lastHash != $hash && $lastHash = $hash); |
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99 | |
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100 | $asset->setContent($content); |
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101 | } |
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102 | |
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103 | public function filterDump(AssetInterface $asset) |
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104 | { |
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105 | } |
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106 | } |
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