CSSMin Class Reference

Transforms CSS data. More...

List of all members.

Static Public Member Functions
static	encodeImageAsDataURI ($file, $type=null, $sizeLimit=self::EMBED_SIZE_LIMIT)
	Encode an image file as a base64 data URI.
static	getLocalFileReferences ($source, $path=null)
	Gets a list of local file paths which are referenced in a CSS style sheet.
static	getMimeType ($file)
static	minify ($css)
	Removes whitespace from CSS data.
static	remap ($source, $local, $remote, $embedData=true)
	Remaps CSS URL paths and automatically embeds data URIs for URL rules preceded by an /* * / comment.
Public Attributes
const	EMBED_SIZE_LIMIT = 24576
	Maximum file size to still qualify for in-line embedding as a data-URI.
const	URL_REGEX = 'url\(\s*[\'"]?(?P<file>[^\?\)\'"]*)(?P<query>\??[^\)\'"]*)[\'"]?\s*\)'
Static Protected Attributes
static	$mimeTypes

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Detailed Description

Transforms CSS data.

This class provides minification, URL remapping, URL extracting, and data-URL embedding.

Definition at line 30 of file CSSMin.php.

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Member Function Documentation

static CSSMin::encodeImageAsDataURI	(	$	file,
		$	type = null,
		$	sizeLimit = self::EMBED_SIZE_LIMIT
	)		[static]

Encode an image file as a base64 data URI.

If the image file has a suitable MIME type and size, encode it as a base64 data URI. Return false if the image type is unfamiliar or exceeds the size limit.

Parameters:

string	$file	Image file to encode.
string | null	$type	File's MIME type or null. If null, CSSMin will try to autodetect the type.
int | bool	$sizeLimit	If the size of the target file is greater than this value, decline to encode the image file and return false instead. If $sizeLimit is false, no limit is enforced.

Returns:

string|bool: Image contents encoded as a data URI or false.

Definition at line 98 of file CSSMin.php.

References $file, and getMimeType().

Referenced by ResourceLoaderLESSFunctions\embed(), and remap().

static CSSMin::getLocalFileReferences	(	$	source,
		$	path = null
	)		[static]

Gets a list of local file paths which are referenced in a CSS style sheet.

Parameters:

string	$source	CSS data to remap
string	$path	File path where the source was read from (optional)

Returns:

array List of local file references

Definition at line 66 of file CSSMin.php.

References $file, $files, $matches, $path, $source, array(), and as.

Referenced by ResourceLoaderFileModule\readStyleFile().

static CSSMin::getMimeType

(

$

file

)

[static]

Parameters:

$file

string

Returns:

bool|string

Definition at line 116 of file CSSMin.php.

References $ext, and $file.

Referenced by ResourceLoaderLESSFunctions\embeddable(), and encodeImageAsDataURI().

static CSSMin::minify

(

$

css

)

[static]

Removes whitespace from CSS data.

Parameters:

string

$css

CSS data to minify

Returns:

string Minified CSS data

Definition at line 244 of file CSSMin.php.

References $css, and array().

Referenced by CSSMinTest\testMinify().

static CSSMin::remap	(	$	source,
		$	local,
		$	remote,
		$	embedData = true
	)		[static]

Remaps CSS URL paths and automatically embeds data URIs for URL rules preceded by an /* * / comment.

Parameters:

string	$source	CSS data to remap
string	$local	File path where the source was read from
string	$remote	URL path to the file
bool	$embedData	If false, never do any data URI embedding, even if / * * / is found

Returns:

string Remapped CSS data

Definition at line 152 of file CSSMin.php.

References $file, $pre, $query, $source, encodeImageAsDataURI(), and wfExpandUrl().

Referenced by ResourceLoaderWikiModule\getStyles(), and ResourceLoaderFileModule\readStyleFile().

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Member Data Documentation

CSSMin::$mimeTypes [static, protected]

Initial value:

 array(
        'gif' => 'image/gif',
        'jpe' => 'image/jpeg',
        'jpeg' => 'image/jpeg',
        'jpg' => 'image/jpeg',
        'png' => 'image/png',
        'tif' => 'image/tiff',
        'tiff' => 'image/tiff',
        'xbm' => 'image/x-xbitmap',
    )

Definition at line 46 of file CSSMin.php.

const CSSMin::EMBED_SIZE_LIMIT = 24576

Maximum file size to still qualify for in-line embedding as a data-URI.

24,576 is used because Internet Explorer has a 32,768 byte limit for data URIs, which when base64 encoded will result in a 1/3 increase in size.

Definition at line 40 of file CSSMin.php.

Referenced by ResourceLoaderLESSFunctions\embeddable().

const CSSMin::URL_REGEX = 'url\(\s*[\'"]?(?P<file>[^\?\)\'"]*)(?P<query>\??[^\)\'"]*)[\'"]?\s*\)'

Definition at line 41 of file CSSMin.php.

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

• includes/libs/CSSMin.php