Assetic\Util\CssUtils Class Reference

CSS Utils. More...

Inheritance diagram for Assetic\Util\CssUtils:

Collaboration diagram for Assetic\Util\CssUtils:

Static Public Member Functions
static	filterReferences ($content, $callback)
	Filters all references – url() and "@import" – through a callable. More...
static	filterUrls ($content, $callback)
	Filters all CSS url()'s through a callable. More...
static	filterImports ($content, $callback, $includeUrl=true)
	Filters all CSS imports through a callable. More...
static	filterIEFilters ($content, $callback)
	Filters all IE filters (AlphaImageLoader filter) through a callable. More...
static	filterCommentless ($content, $callback)
	Filters each non-comment part through a callable. More...
static	extractImports ($content)
	Extracts all references from the supplied CSS content. More...

Data Fields
const	REGEX_URLS = '/url\((["\']?)(?P<url>.*?)(\\1)\‍)/'
const	REGEX_IMPORTS = '/@import (?:url\()?(\'|"|)(?P<url>[^\'"\‍)\n\r]*)\1\‍)?;?/'
const	REGEX_IMPORTS_NO_URLS = '/@import (?!url\()(\'|"|)(?P<url>[^\'"\‍)\n\r]*)\1;?/'
const	REGEX_IE_FILTERS = '/src=(["\']?)(?P<url>.*?)\\1/'
const	REGEX_COMMENTS = '/(\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)/'

Private Member Functions
	__construct ()

Detailed Description

CSS Utils.

Author

Kris Wallsmith kris..nosp@m.wall.nosp@m.smith.nosp@m.@gma.nosp@m.il.co.nosp@m.m

Definition at line 19 of file CssUtils.php.

Constructor & Destructor Documentation

__construct()

Assetic\Util\CssUtils::__construct ( )

finalprivate

Definition at line 135 of file CssUtils.php.

    {
    }

Member Function Documentation

extractImports()

static Assetic\Util\CssUtils::extractImports (   $content )

static

Extracts all references from the supplied CSS content.

Parameters

string

$content

The CSS content

Returns

array An array of unique URLs

Definition at line 125 of file CssUtils.php.

    {
        $imports = array();
        static::filterImports($content, function ($matches) use (&$imports) {
            $imports[] = $matches['url'];
        });
 
        return array_unique($imports);
    }

Referenced by Assetic\Filter\LessFilter\getChildren(), Assetic\Filter\LessphpFilter\getChildren(), and Assetic\Filter\ScssphpFilter\getChildren().

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filterCommentless()

static Assetic\Util\CssUtils::filterCommentless (   $content,   $callback  )

static

Filters each non-comment part through a callable.

Parameters

string	$content	The CSS
callable	$callback	A PHP callable

Returns

string The filtered CSS

Definition at line 104 of file CssUtils.php.

    {
        $result = '';
        foreach (preg_split(static::REGEX_COMMENTS, $content, -1, PREG_SPLIT_DELIM_CAPTURE) as $part) {
            if (!preg_match(static::REGEX_COMMENTS, $part, $match) || $part != $match[0]) {
                $part = call_user_func($callback, $part);
            }
 
            $result .= $part;
        }
 
        return $result;
    }

References $result, and PREG_SPLIT_DELIM_CAPTURE.

filterIEFilters()

static Assetic\Util\CssUtils::filterIEFilters (   $content,   $callback  )

static

Filters all IE filters (AlphaImageLoader filter) through a callable.

Parameters

string	$content	The CSS
callable	$callback	A PHP callable

Returns

string The filtered CSS

Definition at line 87 of file CssUtils.php.

    {
        $pattern = static::REGEX_IE_FILTERS;
 
        return static::filterCommentless($content, function ($part) use (& $callback, $pattern) {
            return preg_replace_callback($pattern, $callback, $part);
        });
    }

Referenced by Assetic\Filter\BaseCssFilter\filterIEFilters().

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filterImports()

static Assetic\Util\CssUtils::filterImports (   $content,   $callback,   $includeUrl = true  )

static

Filters all CSS imports through a callable.

Parameters

string	$content	The CSS
callable	$callback	A PHP callable
Boolean	$includeUrl	Whether to include url() in the pattern

Returns

string The filtered CSS

Definition at line 70 of file CssUtils.php.

    {
        $pattern = $includeUrl ? static::REGEX_IMPORTS : static::REGEX_IMPORTS_NO_URLS;
 
        return static::filterCommentless($content, function ($part) use (& $callback, $pattern) {
            return preg_replace_callback($pattern, $callback, $part);
        });
    }

Referenced by Assetic\Filter\BaseCssFilter\filterImports().

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filterReferences()

static Assetic\Util\CssUtils::filterReferences (   $content,   $callback  )

static

Filters all references – url() and "@import" – through a callable.

Parameters

string	$content	The CSS
callable	$callback	A PHP callable

Returns

string The filtered CSS

Definition at line 35 of file CssUtils.php.

    {
        $content = static::filterUrls($content, $callback);
        $content = static::filterImports($content, $callback, false);
        $content = static::filterIEFilters($content, $callback);
 
        return $content;
    }

Referenced by Assetic\Filter\BaseCssFilter\filterReferences().

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filterUrls()

static Assetic\Util\CssUtils::filterUrls (   $content,   $callback  )

static

Filters all CSS url()'s through a callable.

Parameters

string	$content	The CSS
callable	$callback	A PHP callable

Returns

string The filtered CSS

Definition at line 52 of file CssUtils.php.

    {
        $pattern = static::REGEX_URLS;
 
        return static::filterCommentless($content, function ($part) use (& $callback, $pattern) {
            return preg_replace_callback($pattern, $callback, $part);
        });
    }

Referenced by Assetic\Filter\BaseCssFilter\filterUrls().

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Field Documentation

REGEX_COMMENTS

const Assetic\Util\CssUtils::REGEX_COMMENTS = '/(\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)/'

Definition at line 25 of file CssUtils.php.

REGEX_IE_FILTERS

const Assetic\Util\CssUtils::REGEX_IE_FILTERS = '/src=(["\']?)(?P<url>.*?)\\1/'

Definition at line 24 of file CssUtils.php.

REGEX_IMPORTS

const Assetic\Util\CssUtils::REGEX_IMPORTS = '/@import (?:url\()?(\'|"|)(?P<url>[^\'"\‍)\n\r]*)\1\‍)?;?/'

Definition at line 22 of file CssUtils.php.

REGEX_IMPORTS_NO_URLS

const Assetic\Util\CssUtils::REGEX_IMPORTS_NO_URLS = '/@import (?!url\()(\'|"|)(?P<url>[^\'"\‍)\n\r]*)\1;?/'

Definition at line 23 of file CssUtils.php.

REGEX_URLS

const Assetic\Util\CssUtils::REGEX_URLS = '/url\((["\']?)(?P<url>.*?)(\\1)\‍)/'

Definition at line 21 of file CssUtils.php.

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The documentation for this class was generated from the following file:

• libs/composer/vendor/kriswallsmith/assetic/src/Assetic/Util/CssUtils.php