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Merge pull request #14 from mervick/master
Added alternative Scss parser with Compass framework support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| <?php | ||
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| namespace nizsheanez\assetConverter; | ||
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| use Yii; | ||
|
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| /** | ||
| * Class Scss | ||
| * @package nizsheanez\assetConverter | ||
| * @author Andrey Izman <[email protected]> | ||
| */ | ||
| class Scss extends Parser | ||
| { | ||
| /** | ||
| * @var bool compass support | ||
| */ | ||
| public $enableCompass = true; | ||
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| /** | ||
| * @var array paths to import files | ||
| */ | ||
| public $importPaths = []; | ||
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| /** | ||
| * @var bool if is true, compiler will place line numbers in your compiled output | ||
| */ | ||
| public $lineComments = false; | ||
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| /** | ||
| * @var string output style | ||
| */ | ||
| public $outputStyle = 'nested'; | ||
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| /** | ||
| * @var array defined formatters | ||
| */ | ||
| protected $formatters = [ | ||
| 'compressed', 'crunched', 'expanded', 'nested', | ||
| ]; | ||
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|
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| /** | ||
| * Parse a Scss file and convert it into CSS | ||
| * | ||
| * @param string $src source file path | ||
| * @param string $dst destination file path | ||
| * @param array $options parser options | ||
| * @return mixed | ||
| * @throws \Exception | ||
| */ | ||
| public function parse($src, $dst, $options) | ||
| { | ||
| $this->importPaths = !empty($options['importPaths']) ? $options['importPaths'] : $this->importPaths; | ||
| $this->enableCompass = isset($options['enableCompass']) ? $options['enableCompass'] : $this->enableCompass; | ||
| $this->lineComments = isset($options['lineComments']) ? $options['lineComments'] : $this->lineComments; | ||
| $this->outputStyle = isset($options['outputStyle']) ? $options['outputStyle'] : $this->outputStyle; | ||
| $this->outputStyle = strtolower($this->outputStyle); | ||
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| $parser = new \Leafo\ScssPhp\Compiler(); | ||
| if (!empty($this->importPaths) && is_array($this->importPaths)) { | ||
| $paths = ['']; | ||
| foreach ($this->importPaths as $path) { | ||
| $paths[] = Yii::getAlias($path); | ||
| } | ||
| $parser->setImportPaths($paths); | ||
| } | ||
|
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| if (in_array($this->outputStyle, $this->formatters)) { | ||
| if ($this->lineComments && in_array($this->outputStyle, ['compressed', 'crunched'])) { | ||
| $this->lineComments = false; | ||
| } | ||
| $parser->setFormatter('Leafo\\ScssPhp\\Formatter\\' . ucfirst($this->outputStyle)); | ||
| } | ||
|
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| if ($this->enableCompass) { | ||
| new \scss_compass($parser); | ||
| } | ||
|
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| if (!file_exists($src)) { | ||
| throw new \Exception("Failed to open file \"$src\""); | ||
| } | ||
|
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| if ($this->lineComments) { | ||
| $content = self::insertLineComments($src, self::getRelativeFilename($src, $dst)); | ||
| file_put_contents($dst, self::parseLineComments($parser->compile($content, $src))); | ||
| } else { | ||
| file_put_contents($dst, $parser->compile(file_get_contents($src), $src)); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Returns the relative filename of $src to $dst | ||
| * | ||
| * @param string $src | ||
| * @param string $dst | ||
| * @return string | ||
| */ | ||
| protected static function getRelativeFilename($src, $dst) { | ||
| $src = explode('/', $src); | ||
| $dst = explode('/', $dst); | ||
| for ($index=1, $count=count($src); $index<$count; $index++) { | ||
| if (!isset($src[$index]) || !isset($dst[$index]) || $src[$index] !== $dst[$index]) { | ||
| break; | ||
| } | ||
| } | ||
| return str_repeat('../', count($dst)-$index-1) . implode('/', array_slice($src, $index)); | ||
| } | ||
|
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| /** | ||
| * Inserts the line numbers into comments | ||
| * | ||
| * @param string $src | ||
| * @param string $filename | ||
| * @return string | ||
| */ | ||
| protected static function insertLineComments($src, $filename) | ||
| { | ||
| $lines = explode("\n", preg_replace_callback('~/\*.+?\*/~sx', | ||
| function($m) {return str_repeat("\n", substr_count($m[0], "\n"));}, file_get_contents($src))); | ||
|
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| foreach ($lines as $no => $line) { | ||
| $no++; | ||
| $newLine = ''; | ||
| for ($pos = 0; ($pos = mb_strpos($line, '{')) !== false;) { | ||
| $comment = "/* line: $no, $filename */"; | ||
| $newLine .= mb_substr($line, 0, $pos+1) . $comment; | ||
| $line = mb_substr($line, $pos+1); | ||
| } | ||
| if (!empty($newLine)) { | ||
| $lines[$no-1] = $newLine . $line; | ||
| } | ||
| } | ||
| return implode("\n", $lines); | ||
| } | ||
|
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| /** | ||
| * Parses the line numbers comments and moves them into the header of the block | ||
| * | ||
| * @param string $content | ||
| * @return string | ||
| */ | ||
| protected static function parseLineComments($content) | ||
| { | ||
| $content = preg_replace('~(/\*.+?\*/)([\x0b-\x20]+)~sx', "\\1\n\\2", $content); | ||
| $lines = explode("\n", $content); | ||
| unset($content); | ||
| $begin = 0; | ||
| foreach ($lines as $id => $line) { | ||
| if (empty($line)) { | ||
| if ($id > 0 && $id === $begin+1) { | ||
| $begin = $id; | ||
| } | ||
| } elseif (strpos($line, '}') !== false) { | ||
| $begin = $id; | ||
| } elseif (strpos($line, '{') !== false) { | ||
| $begin = $id > 0 ? $id-1 : 0; | ||
| } elseif (strpos($line, '/*') !== false) { | ||
| unset($lines[$id]); | ||
| if ($begin > 0) { | ||
| for (; !isset($lines[$begin]); $begin--); | ||
| for ($next=$begin+1; !isset($lines[$next]); $next++); | ||
| $lines[$begin] .= "\n" . preg_replace('~^(\s+)*.+$~', '\1', $lines[$next]) . ltrim($line); | ||
| } else { | ||
| $lines[$begin] = preg_replace('~^(\s+)*.+$~', '\1', $lines[$begin]) . ltrim($line) . "\n" . $lines[$begin]; | ||
| } | ||
| } | ||
| } | ||
| return implode("\n", $lines); | ||
| } | ||
| } |
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