[7575] | 1 | <?php |
---|
| 2 | |
---|
| 3 | /* |
---|
| 4 | * This file is part of the Assetic package, an OpenSky project. |
---|
| 5 | * |
---|
| 6 | * (c) 2010-2012 OpenSky Project Inc |
---|
| 7 | * |
---|
| 8 | * For the full copyright and license information, please view the LICENSE |
---|
| 9 | * file that was distributed with this source code. |
---|
| 10 | */ |
---|
| 11 | |
---|
| 12 | namespace Assetic\Filter; |
---|
| 13 | |
---|
| 14 | use Assetic\Asset\AssetInterface; |
---|
| 15 | |
---|
| 16 | /** |
---|
| 17 | * Fixes relative CSS urls. |
---|
| 18 | * |
---|
| 19 | * @author Kris Wallsmith <kris.wallsmith@gmail.com> |
---|
| 20 | */ |
---|
| 21 | class CssRewriteFilter extends BaseCssFilter |
---|
| 22 | { |
---|
| 23 | public function filterLoad(AssetInterface $asset) |
---|
| 24 | { |
---|
| 25 | } |
---|
| 26 | |
---|
| 27 | public function filterDump(AssetInterface $asset) |
---|
| 28 | { |
---|
| 29 | $sourceBase = $asset->getSourceRoot(); |
---|
| 30 | $sourcePath = $asset->getSourcePath(); |
---|
| 31 | $targetPath = $asset->getTargetPath(); |
---|
| 32 | |
---|
| 33 | if (null === $sourcePath || null === $targetPath || $sourcePath == $targetPath) { |
---|
| 34 | return; |
---|
| 35 | } |
---|
| 36 | |
---|
| 37 | // learn how to get from the target back to the source |
---|
| 38 | if (false !== strpos($sourceBase, '://')) { |
---|
| 39 | list($scheme, $url) = explode('://', $sourceBase.'/'.$sourcePath, 2); |
---|
| 40 | list($host, $path) = explode('/', $url, 2); |
---|
| 41 | |
---|
| 42 | $host = $scheme.'://'.$host.'/'; |
---|
| 43 | $path = false === strpos($path, '/') ? '' : dirname($path); |
---|
| 44 | $path .= '/'; |
---|
| 45 | } else { |
---|
| 46 | // assume source and target are on the same host |
---|
| 47 | $host = ''; |
---|
| 48 | |
---|
| 49 | // pop entries off the target until it fits in the source |
---|
| 50 | if ('.' == dirname($sourcePath)) { |
---|
| 51 | $path = str_repeat('../', substr_count($targetPath, '/')); |
---|
| 52 | } elseif ('.' == $targetDir = dirname($targetPath)) { |
---|
| 53 | $path = dirname($sourcePath).'/'; |
---|
| 54 | } else { |
---|
| 55 | $path = ''; |
---|
| 56 | while (0 !== strpos($sourcePath, $targetDir)) { |
---|
| 57 | if (false !== $pos = strrpos($targetDir, '/')) { |
---|
| 58 | $targetDir = substr($targetDir, 0, $pos); |
---|
| 59 | $path .= '../'; |
---|
| 60 | } else { |
---|
| 61 | $targetDir = ''; |
---|
| 62 | $path .= '../'; |
---|
| 63 | break; |
---|
| 64 | } |
---|
| 65 | } |
---|
| 66 | $path .= ltrim(substr(dirname($sourcePath).'/', strlen($targetDir)), '/'); |
---|
| 67 | } |
---|
| 68 | } |
---|
| 69 | |
---|
| 70 | $content = $this->filterReferences($asset->getContent(), function($matches) use ($host, $path) { |
---|
| 71 | if (false !== strpos($matches['url'], '://') || 0 === strpos($matches['url'], '//') || 0 === strpos($matches['url'], 'data:')) { |
---|
| 72 | // absolute or protocol-relative or data uri |
---|
| 73 | return $matches[0]; |
---|
| 74 | } |
---|
| 75 | |
---|
| 76 | if ('/' == $matches['url'][0]) { |
---|
| 77 | // root relative |
---|
| 78 | return str_replace($matches['url'], $host.$matches['url'], $matches[0]); |
---|
| 79 | } |
---|
| 80 | |
---|
| 81 | // document relative |
---|
| 82 | $url = $matches['url']; |
---|
| 83 | while (0 === strpos($url, '../') && 2 <= substr_count($path, '/')) { |
---|
| 84 | $path = substr($path, 0, strrpos(rtrim($path, '/'), '/') + 1); |
---|
| 85 | $url = substr($url, 3); |
---|
| 86 | } |
---|
| 87 | |
---|
| 88 | $parts = array(); |
---|
| 89 | foreach (explode('/', $host.$path.$url) as $part) { |
---|
| 90 | if ('..' === $part && count($parts) && '..' !== end($parts)) { |
---|
| 91 | array_pop($parts); |
---|
| 92 | } else { |
---|
| 93 | $parts[] = $part; |
---|
| 94 | } |
---|
| 95 | } |
---|
| 96 | |
---|
| 97 | return str_replace($matches['url'], implode('/', $parts), $matches[0]); |
---|
| 98 | }); |
---|
| 99 | |
---|
| 100 | $asset->setContent($content); |
---|
| 101 | } |
---|
| 102 | } |
---|