1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\AssetManager\UIAssetMerger;
use Exception;
use lessc;
use Piwik\AssetManager\UIAsset;
use Piwik\AssetManager\UIAssetMerger;
use Piwik\Piwik;
class StylesheetUIAssetMerger extends UIAssetMerger
{
/**
* @var lessc
*/
private $lessCompiler;
public function __construct($mergedAsset, $assetFetcher, $cacheBuster)
{
parent::__construct($mergedAsset, $assetFetcher, $cacheBuster);
$this->lessCompiler = self::getLessCompiler();
}
protected function getMergedAssets()
{
// note: we're using setImportDir on purpose (not addImportDir)
$this->lessCompiler->setImportDir(PIWIK_USER_PATH);
$concatenatedAssets = $this->getConcatenatedAssets();
return $this->lessCompiler->compile($concatenatedAssets);
}
/**
* @return lessc
* @throws Exception
*/
private static function getLessCompiler()
{
if (!class_exists("lessc")) {
throw new Exception("Less was added to composer during 2.0. ==> Execute this command to update composer packages: \$ php composer.phar install");
}
$less = new lessc();
return $less;
}
protected function generateCacheBuster()
{
$fileHash = $this->cacheBuster->md5BasedCacheBuster($this->getConcatenatedAssets());
return "/* compile_me_once=$fileHash */";
}
protected function getPreamble()
{
return $this->getCacheBusterValue() . "\n"
. "/* Piwik CSS file is compiled with Less. You may be interested in writing a custom Theme for Piwik! */\n";
}
protected function postEvent(&$mergedContent)
{
/**
* Triggered after all less stylesheets are compiled to CSS, minified and merged into
* one file, but before the generated CSS is written to disk.
*
* This event can be used to modify merged CSS.
*
* @param string $mergedContent The merged and minified CSS.
*/
Piwik::postEvent('AssetManager.filterMergedStylesheets', array(&$mergedContent));
}
public function getFileSeparator()
{
return '';
}
protected function processFileContent($uiAsset)
{
$pathsRewriter = $this->getCssPathsRewriter($uiAsset);
$content = $uiAsset->getContent();
$content = $this->rewriteCssImagePaths($content, $pathsRewriter);
$content = $this->rewriteCssImportPaths($content, $pathsRewriter);
return $content;
}
/**
* Rewrite CSS url() directives
*
* @param string $content
* @param callable $pathsRewriter
* @return string
*/
private function rewriteCssImagePaths($content, $pathsRewriter)
{
$content = preg_replace_callback("/(url\(['\"]?)([^'\")]*)/", $pathsRewriter, $content);
return $content;
}
/**
* Rewrite CSS import directives
*
* @param string $content
* @param callable $pathsRewriter
* @return string
*/
private function rewriteCssImportPaths($content, $pathsRewriter)
{
$content = preg_replace_callback("/(@import \")([^\")]*)/", $pathsRewriter, $content);
return $content;
}
/**
* Rewrite CSS url directives
* - rewrites paths defined relatively to their css/less definition file
* - rewrite windows directory separator \\ to /
*
* @param UIAsset $uiAsset
* @return \Closure
*/
private function getCssPathsRewriter($uiAsset)
{
$baseDirectory = dirname($uiAsset->getRelativeLocation());
return function ($matches) use ($baseDirectory) {
$absolutePath = PIWIK_USER_PATH . "/$baseDirectory/" . $matches[2];
// Allow to import extension less file
if (strpos($matches[2], '.') === false) {
$absolutePath .= '.less';
}
// Prevent from rewriting full path
$absolutePath = realpath($absolutePath);
if ($absolutePath) {
$relativePath = $baseDirectory . "/" . $matches[2];
$relativePath = str_replace('\\', '/', $relativePath);
$publicPath = $matches[1] . $relativePath;
} else {
$publicPath = $matches[1] . $matches[2];
}
return $publicPath;
};
}
/**
* @param UIAsset $uiAsset
* @return int
*/
protected function countDirectoriesInPathToRoot($uiAsset)
{
$rootDirectory = realpath($uiAsset->getBaseDirectory());
if ($rootDirectory != PATH_SEPARATOR
&& substr($rootDirectory, -strlen(PATH_SEPARATOR)) !== PATH_SEPARATOR) {
$rootDirectory .= PATH_SEPARATOR;
}
$rootDirectoryLen = strlen($rootDirectory);
return $rootDirectoryLen;
}
}
|