Transforms CSS data. More...

Static Public Member Functions
static	buildUrlValue ( $url)
	Build a CSS 'url()' value for the given URL, quoting parentheses (and other funny characters) and escaping quotes as necessary.

static	encodeImageAsDataURI ( $file, $type=null, $ie8Compat=true)
	Encode an image file as a data URI.

static	encodeStringAsDataURI ( $contents, $type, $ie8Compat=true)
	Encode file contents as a data URI with chosen MIME type.

static	getLocalFileReferences ( $source, $path)
	Get a list of local files referenced in a stylesheet (includes non-existent files).

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 CSS rules or url() values preceded by an / * @embed * / comment.

static	remapOne ( $file, $query, $local, $remote, $embed)
	Remap or embed a CSS URL path.

static	serializeStringValue ( $value)
	Serialize a string (escape and quote) for use as a CSS string value.

Public Attributes
const	COMMENT_REGEX = '\/\.?\*\/'

const	DATA_URI_SIZE_LIMIT = 32768
	Internet Explorer data URI length limit.

const	EMBED_REGEX = '\/\\s\@embed\s\\/'

Static Protected Member Functions
static	isLocalUrl ( $maybeUrl)
	Is this CSS rule referencing a local URL?

static	isRemoteUrl ( $maybeUrl)
	Is this CSS rule referencing a remote URL?

Static Protected Attributes
static array	$mimeTypes
	List of common image files extensions and MIME-types.

Static Private Member Functions
static	getUrlRegex ()

static	processUrlMatch (array &$match, $flags=0)

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.

Member Function Documentation

◆ buildUrlValue()

static CSSMin::buildUrlValue ( $url )

static

Build a CSS 'url()' value for the given URL, quoting parentheses (and other funny characters) and escaping quotes as necessary.

See http://www.w3.org/TR/css-syntax-3/#consume-a-url-token

Parameters

string $url URL to process

Returns: string 'url()' value, usually just "url($url)", quoted/escaped if necessary

Definition at line 221 of file CSSMin.php.

Referenced by ResourceLoaderImageModule\getCssDeclarations(), ResourceLoaderSkinModule\getStyles(), CssContentHandler\makeRedirectContent(), remap(), and CSSMinTest\testBuildUrlValue().

◆ encodeImageAsDataURI()

static CSSMin::encodeImageAsDataURI	(	$file,
		$type = `null`,
		$ie8Compat = `true`
	)

static

Encode an image file as a data URI.

If the image file has a suitable MIME type and size, encode it as a data URI, base64-encoded for binary files or just percent-encoded otherwise. Return false if the image type is unfamiliar or file 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.
bool	$ie8Compat	By default, a data URI will only be produced if it can be made short enough to fit in Internet Explorer 8 (and earlier) URI length limit (32,768 bytes). Pass `false` to remove this limitation.

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

Definition at line 114 of file CSSMin.php.

References $type, encodeStringAsDataURI(), and getMimeType().

Referenced by remapOne().

◆ encodeStringAsDataURI()

static CSSMin::encodeStringAsDataURI	(	$contents,
		$type,
		$ie8Compat = `true`
	)

static

Encode file contents as a data URI with chosen MIME type.

The URI will be base64-encoded for binary files or just percent-encoded otherwise.

Since: 1.25

Parameters

string	$contents	File contents to encode.
string	$type	File's MIME type.
bool	$ie8Compat	See encodeImageAsDataURI().

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

Definition at line 142 of file CSSMin.php.

References $type.

Referenced by encodeImageAsDataURI(), and ResourceLoaderImage\getDataUri().

◆ getLocalFileReferences()

static CSSMin::getLocalFileReferences	(	$source,
		$path
	)

static

Get a list of local files referenced in a stylesheet (includes non-existent files).

Parameters

string	$source	CSS stylesheet source to process
string	$path	File path where the source was read from

Returns: array List of local file references

Definition at line 63 of file CSSMin.php.

References $matches, $path, $source, as, and processUrlMatch().

Referenced by ResourceLoaderFileModule\readStyleFile(), ResourcesTest\testCommentedLocalFileReferences(), and CSSMinTest\testGetLocalFileReferences().

◆ getMimeType()

static CSSMin::getMimeType ( $file )

static

Parameters

string $file

Returns: bool|string

Definition at line 202 of file CSSMin.php.

References $ext.

Referenced by encodeImageAsDataURI(), remap(), and CSSMinTest\testGetMimeType().

◆ getUrlRegex()

static CSSMin::getUrlRegex ( )

staticprivate

Definition at line 408 of file CSSMin.php.

Referenced by remap().

◆ isLocalUrl()

static CSSMin::isLocalUrl ( $maybeUrl )

staticprotected

Is this CSS rule referencing a local URL?

Parameters

string $maybeUrl

Returns: bool

Definition at line 398 of file CSSMin.php.

◆ isRemoteUrl()

static CSSMin::isRemoteUrl ( $maybeUrl )

staticprotected

Is this CSS rule referencing a remote URL?

Parameters

string $maybeUrl

Returns: bool

Definition at line 385 of file CSSMin.php.

◆ minify()

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 547 of file CSSMin.php.

References $css.

Referenced by ResourceLoader\applyFilter(), BenchmarkCSSMin\execute(), MinifyScript\minify(), CSSMinTest\testMinify(), and ResourcesTest\testStyleMedia().

◆ processUrlMatch()

static CSSMin::processUrlMatch	(	array &	$match,
			$flags = `0`
	)

staticprivate

Definition at line 443 of file CSSMin.php.

Referenced by getLocalFileReferences(), and remap().

◆ remap()

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

static

Remaps CSS URL paths and automatically embeds data URIs for CSS rules or url() values preceded by an / * @embed * / 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 / * @embed * / is found.

Returns: string Remapped CSS data

Definition at line 243 of file CSSMin.php.

References $mimeTypes, $source, buildUrlValue(), EMBED_REGEX, getMimeType(), getUrlRegex(), processUrlMatch(), remapOne(), true, and use.

Referenced by BenchmarkCSSMin\execute(), ResourceLoaderFileModule\readStyleFile(), and CSSMinTest\testRemapRemapping().

◆ remapOne()

static CSSMin::remapOne	(	$file,
		$query,
		$local,
		$remote,
		$embed
	)

static

Remap or embed a CSS URL path.

Parameters

string	$file	URL to remap/embed
string	$query
string	$local	File path where the source was read from
string	$remote	URL path to the file
bool	$embed	Whether to do any data URI embedding

Returns: string Remapped/embedded URL data

Definition at line 488 of file CSSMin.php.

References $query, encodeImageAsDataURI(), PROTO_RELATIVE, wfExpandUrl(), and wfRemoveDotSegments().

Referenced by remap().

◆ serializeStringValue()

static CSSMin::serializeStringValue ( $value )

static

Serialize a string (escape and quote) for use as a CSS string value.

https://www.w3.org/TR/2016/WD-cssom-1-20160317/#serialize-a-string

Parameters

string $value

Returns: string

Definition at line 190 of file CSSMin.php.

References $value.

Referenced by ResourceLoaderEditToolbarModule\getLessVars(), and CSSMinTest\testSerializeStringValue().

Member Data Documentation

◆ $mimeTypes

array CSSMin::$mimeTypes

staticprotected

Initial value:

= [
        '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',
        'svg' => 'image/svg+xml',
    ]

List of common image files extensions and MIME-types.

Definition at line 44 of file CSSMin.php.

Referenced by remap().

◆ COMMENT_REGEX

const CSSMin::COMMENT_REGEX = '\/\*.*?\*\/'

Definition at line 41 of file CSSMin.php.

◆ DATA_URI_SIZE_LIMIT

const CSSMin::DATA_URI_SIZE_LIMIT = 32768

Internet Explorer data URI length limit.

See encodeImageAsDataURI().

Definition at line 38 of file CSSMin.php.

◆ EMBED_REGEX

const CSSMin::EMBED_REGEX = '\/\*\s*\@embed\s*\*\/'

Definition at line 40 of file CSSMin.php.

Referenced by remap().

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

includes/libs/CSSMin.php

Static Public Member Functions

Public Attributes

Static Protected Member Functions

Static Protected Attributes

Static Private Member Functions

Detailed Description

Member Function Documentation

◆ buildUrlValue()

◆ encodeImageAsDataURI()

◆ encodeStringAsDataURI()

◆ getLocalFileReferences()

◆ getMimeType()

◆ getUrlRegex()

◆ isLocalUrl()

◆ isRemoteUrl()

◆ minify()

◆ processUrlMatch()

◆ remap()

◆ remapOne()

◆ serializeStringValue()

Member Data Documentation

◆ $mimeTypes

◆ COMMENT_REGEX

◆ DATA_URI_SIZE_LIMIT

◆ EMBED_REGEX