Sindbad~EG File Manager
<?php
/**
* This class provides functions for converting CSS styles into inline style attributes in your HTML code.
*
* For more information, please see the README.md file.
*
* @author Cameron Brooks
* @author Jaime Prado
* @author Roman O�ana <ozana@omdesign.cz>
*/
if(!class_exists('Emogrifier')) {
class Emogrifier {
/**
* @var string
*/
const ENCODING = 'UTF-8';
/**
* @var integer
*/
const CACHE_KEY_CSS = 0;
/**
* @var integer
*/
const CACHE_KEY_SELECTOR = 1;
/**
* @var integer
*/
const CACHE_KEY_XPATH = 2;
/**
* @var integer
*/
const CACHE_KEY_CSS_DECLARATION_BLOCK = 3;
/**
* for calculating nth-of-type and nth-child selectors
*
* @var integer
*/
const INDEX = 0;
/**
* for calculating nth-of-type and nth-child selectors
*
* @var integer
*/
const MULTIPLIER = 1;
/**
* @var string
*/
const ID_ATTRIBUTE_MATCHER = '/(\\w+)?\\#([\\w\\-]+)/';
/**
* @var string
*/
const CLASS_ATTRIBUTE_MATCHER = '/(\\w+|[\\*\\]])?((\\.[\\w\\-]+)+)/';
/**
* @var string
*/
private $html = '';
/**
* @var string
*/
private $css = '';
/**
* @var array<string>
*/
private $unprocessableHtmlTags = array( 'wbr' );
/**
* @var array<array>
*/
private $caches = array(
self::CACHE_KEY_CSS => array(),
self::CACHE_KEY_SELECTOR => array(),
self::CACHE_KEY_XPATH => array(),
self::CACHE_KEY_CSS_DECLARATION_BLOCK => array(),
);
/**
* the visited nodes with the XPath paths as array keys
*
* @var array<\DOMNode>
*/
private $visitedNodes = array();
/**
* the styles to apply to the nodes with the XPath paths as array keys for the outer array and the attribute names/values
* as key/value pairs for the inner array
*
* @var array<array><string>
*/
private $styleAttributesForNodes = array();
/**
* This attribute applies to the case where you want to preserve your original text encoding.
*
* By default, emogrifier translates your text into HTML entities for two reasons:
*
* 1. Because of client incompatibilities, it is better practice to send out HTML entities rather than unicode over email.
*
* 2. It translates any illegal XML characters that DOMDocument cannot work with.
*
* If you would like to preserve your original encoding, set this attribute to TRUE.
*
* @var boolean
*/
public $preserveEncoding = false;
public static $_media = '';
/**
* The constructor.
*
* @param string $html the HTML to emogrify, must be UTF-8-encoded
* @param string $css the CSS to merge, must be UTF-8-encoded
*/
public function __construct( $html = '', $css = '' ) {
$this->setHtml( $html );
$this->setCss( $css );
}
/**
* The destructor.
*/
public function __destruct() {
$this->purgeVisitedNodes();
}
/**
* Sets the HTML to emogrify.
*
* @param string $html the HTML to emogrify, must be UTF-8-encoded
*/
public function setHtml( $html = '' ) {
$this->html = $html;
}
/**
* Sets the CSS to merge with the HTML.
*
* @param string $css the CSS to merge, must be UTF-8-encoded
*/
public function setCss( $css = '' ) {
$this->css = $css;
}
/**
* Clears all caches.
*/
private function clearAllCaches() {
$this->clearCache( self::CACHE_KEY_CSS );
$this->clearCache( self::CACHE_KEY_SELECTOR );
$this->clearCache( self::CACHE_KEY_XPATH );
$this->clearCache( self::CACHE_KEY_CSS_DECLARATION_BLOCK );
}
/**
* Clears a single cache by key.
*
* @param integer $key the cache key, must be CACHE_KEY_CSS, CACHE_KEY_SELECTOR, CACHE_KEY_XPATH or CACHE_KEY_CSS_DECLARATION_BLOCK
*
* @throws InvalidArgumentException
*/
private function clearCache( $key ) {
$allowedCacheKeys = array( self::CACHE_KEY_CSS, self::CACHE_KEY_SELECTOR, self::CACHE_KEY_XPATH, self::CACHE_KEY_CSS_DECLARATION_BLOCK );
if ( !in_array( $key, $allowedCacheKeys, true ) ) {
throw new InvalidArgumentException( 'Invalid cache key: ' . $key, 1391822035 );
}
$this->caches[$key] = array();
}
/**
* Purges the visited nodes.
*/
private function purgeVisitedNodes() {
$this->visitedNodes = array();
$this->styleAttributesForNodes = array();
}
/**
* Marks a tag for removal.
*
* There are some HTML tags that DOMDocument cannot process, and it will throw an error if it encounters them.
* In particular, DOMDocument will complain if you try to use HTML5 tags in an XHTML document.
*
* Note: The tags will not be removed if they have any content.
*
* @param string $tagName the tag name, e.g., "p"
*/
public function addUnprocessableHtmlTag( $tagName ) {
$this->unprocessableHtmlTags[] = $tagName;
}
/**
* Drops a tag from the removal list.
*
* @param string $tagName the tag name, e.g., "p"
*/
public function removeUnprocessableHtmlTag( $tagName ) {
$key = array_search( $tagName, $this->unprocessableHtmlTags, true );
if ( $key !== false ) {
unset( $this->unprocessableHtmlTags[$key] );
}
}
/**
* Applies the CSS you submit to the HTML you submit.
*
* This method places the CSS inline.
*
* @return string
*
* @throws BadMethodCallException
*/
public function emogrify() {
if ( $this->html === '' ) {
throw new BadMethodCallException( 'Please set some HTML first before calling emogrify.', 1390393096 );
}
$xmlDocument = $this->createXmlDocument();
$xpath = new DOMXPath( $xmlDocument );
$this->clearAllCaches();
// before be begin processing the CSS file, parse the document and normalize all existing CSS attributes (changes 'DISPLAY: none' to 'display: none');
// we wouldn't have to do this if DOMXPath supported XPath 2.0.
// also store a reference of nodes with existing inline styles so we don't overwrite them
$this->purgeVisitedNodes();
$nodesWithStyleAttributes = $xpath->query( '//*[@style]' );
if ( $nodesWithStyleAttributes !== false ) {
/** @var $nodeWithStyleAttribute DOMNode */
foreach ( $nodesWithStyleAttributes as $node ) {
$normalizedOriginalStyle = preg_replace_callback( '/[A-z\\-]+(?=\\:)/S', array( $this, 'strtolower' ), $node->getAttribute( 'style' ) );
// in order to not overwrite existing style attributes in the HTML, we have to save the original HTML styles
$nodePath = $node->getNodePath();
if ( !isset( $this->styleAttributesForNodes[$nodePath] ) ) {
$this->styleAttributesForNodes[$nodePath] = $this->parseCssDeclarationBlock( $normalizedOriginalStyle );
$this->visitedNodes[$nodePath] = $node;
}
$node->setAttribute( 'style', $normalizedOriginalStyle );
}
}
// grab any existing style blocks from the html and append them to the existing CSS
// (these blocks should be appended so as to have precedence over conflicting styles in the existing CSS)
$allCss = $this->css;
$allCss .= $this->getCssFromAllStyleNodes( $xpath );
$cssParts = $this->splitCssAndMediaQuery( $allCss );
self::$_media = ''; // reset
$cssKey = md5( $cssParts['css'] );
if ( !isset( $this->caches[self::CACHE_KEY_CSS][$cssKey] ) ) {
// process the CSS file for selectors and definitions
preg_match_all( '/(?:^|[\\s^{}]*)([^{]+){([^}]*)}/mis', $cssParts['css'], $matches, PREG_SET_ORDER );
$allSelectors = array();
foreach ( $matches as $key => $selectorString ) {
// if there is a blank definition, skip
if ( !strlen( trim( $selectorString[2] ) ) ) {
continue;
}
// else split by commas and duplicate attributes so we can sort by selector precedence
$selectors = explode( ',', $selectorString[1] );
foreach ( $selectors as $selector ) {
// don't process pseudo-elements and behavioral (dynamic) pseudo-classes; ONLY allow structural pseudo-classes
if ( strpos( $selector, ':' ) !== false && !preg_match( '/:\\S+\\-(child|type)\\(/i', $selector ) ) {
continue;
}
$allSelectors[] = array( 'selector' => trim( $selector ),
'attributes' => trim( $selectorString[2] ),
// keep track of where it appears in the file, since order is important
'line' => $key,
);
}
}
// now sort the selectors by precedence
usort( $allSelectors, array( $this, 'sortBySelectorPrecedence' ) );
$this->caches[self::CACHE_KEY_CSS][$cssKey] = $allSelectors;
}
foreach ( $this->caches[self::CACHE_KEY_CSS][$cssKey] as $value ) {
// query the body for the xpath selector
$nodesMatchingCssSelectors = $xpath->query( $this->translateCssToXpath( $value['selector'] ) );
/** @var $node \DOMNode */
foreach ( $nodesMatchingCssSelectors as $node ) {
// if it has a style attribute, get it, process it, and append (overwrite) new stuff
if ( $node->hasAttribute( 'style' ) ) {
// break it up into an associative array
$oldStyleDeclarations = $this->parseCssDeclarationBlock( $node->getAttribute( 'style' ) );
} else {
$oldStyleDeclarations = array();
}
$newStyleDeclarations = $this->parseCssDeclarationBlock( $value['attributes'] );
$node->setAttribute( 'style', $this->generateStyleStringFromDeclarationsArrays( $oldStyleDeclarations, $newStyleDeclarations ) );
}
}
// now iterate through the nodes that contained inline styles in the original HTML
foreach ( $this->styleAttributesForNodes as $nodePath => $styleAttributesForNode ) {
$node = $this->visitedNodes[$nodePath];
$currentStyleAttributes = $this->parseCssDeclarationBlock( $node->getAttribute( 'style' ) );
$node->setAttribute( 'style', $this->generateStyleStringFromDeclarationsArrays( $currentStyleAttributes, $styleAttributesForNode ) );
}
// This removes styles from your email that contain display:none.
// We need to look for display:none, but we need to do a case-insensitive search. Since DOMDocument only supports XPath 1.0,
// lower-case() isn't available to us. We've thus far only set attributes to lowercase, not attribute values. Consequently, we need
// to translate() the letters that would be in 'NONE' ("NOE") to lowercase.
$nodesWithStyleDisplayNone = $xpath->query( '//*[contains(translate(translate(@style," ",""),"NOE","noe"),"display:none")]' );
// The checks on parentNode and is_callable below ensure that if we've deleted the parent node,
// we don't try to call removeChild on a nonexistent child node
if ( $nodesWithStyleDisplayNone->length > 0 ) {
/** @var $node \DOMNode */
foreach ( $nodesWithStyleDisplayNone as $node ) {
if ( $node->parentNode && is_callable( array( $node->parentNode, 'removeChild' ) ) ) {
$node->parentNode->removeChild( $node );
}
}
}
$this->copyCssWithMediaToStyleNode( $cssParts, $xmlDocument );
if ( $this->preserveEncoding ) {
if ( function_exists( 'mb_convert_encoding' ) ) {
return mb_convert_encoding( $xmlDocument->saveHTML(), self::ENCODING, 'HTML-ENTITIES' );
} else {
return htmlspecialchars_decode( utf8_encode( html_entity_decode( $xmlDocument->saveHTML(), ENT_COMPAT, self::ENCODING ) ) );
}
} else {
return $xmlDocument->saveHTML();
}
}
public function strtolower( array $m ) {
return strtolower( $m[0] );
}
/**
* This method merges old or existing name/value array with new name/value array
* and then generates a string of the combined style suitable for placing inline.
* This becomes the single point for CSS string generation allowing for consistent
* CSS output no matter where the CSS originally came from.
*
* @param array $oldStyles
* @param array $newStyles
*
* @return string
*/
private function generateStyleStringFromDeclarationsArrays( array $oldStyles, array $newStyles ) {
$combinedStyles = array_merge( $oldStyles, $newStyles );
$style = '';
foreach ( $combinedStyles as $attributeName => $attributeValue ) {
$style .= ( strtolower( trim( $attributeName ) ) . ': ' . trim( $attributeValue ) . '; ' );
}
return trim( $style );
}
/**
* Copies the media part from CSS array parts to $xmlDocument.
*
* @param array $cssParts
* @param DOMDocument $xmlDocument
*/
public function copyCssWithMediaToStyleNode( array $cssParts, DOMDocument $xmlDocument ) {
if ( isset( $cssParts['media'] ) && $cssParts['media'] !== '' ) {
$this->addStyleElementToDocument( $xmlDocument, $cssParts['media'] );
}
}
/**
* Returns CSS content.
*
* @param DOMXPath $xpath
*
* @return string
*/
private function getCssFromAllStyleNodes( DOMXPath $xpath ) {
$styleNodes = $xpath->query( '//style' );
if ( $styleNodes === false ) {
return '';
}
$css = '';
/** @var $styleNode DOMNode */
foreach ( $styleNodes as $styleNode ) {
$css .= "\n\n" . $styleNode->nodeValue;
$styleNode->parentNode->removeChild( $styleNode );
}
return $css;
}
/**
* Adds a style element with $css to $document.
*
* @param DOMDocument $document
* @param string $css
*/
private function addStyleElementToDocument( DOMDocument $document, $css ) {
$styleElement = $document->createElement( 'style', $css );
$styleAttribute = $document->createAttribute( 'type' );
$styleAttribute->value = 'text/css';
$styleElement->appendChild( $styleAttribute );
$head = $this->getOrCreateHeadElement( $document );
$head->appendChild( $styleElement );
}
/**
* Returns the existing or creates a new head element in $document.
*
* @param DOMDocument $document
*
* @return DOMNode the head element
*/
private function getOrCreateHeadElement( DOMDocument $document ) {
$head = $document->getElementsByTagName( 'head' )->item( 0 );
if ( $head === null ) {
$head = $document->createElement( 'head' );
$html = $document->getElementsByTagName( 'html' )->item( 0 );
$html->insertBefore( $head, $document->getElementsByTagName( 'body' )->item( 0 ) );
}
return $head;
}
/**
* Splits input CSS code to an array where:
*
* - key "css" will be contains clean CSS code
* - key "media" will be contains all valuable media queries
*
* Example:
*
* The CSS code
*
* "@import "file.css"; h1 { color:red; } @media { h1 {}} @media tv { h1 {}}"
*
* will be parsed into the following array:
*
* "css" => "h1 { color:red; }"
* "media" => "@media { h1 {}}"
*
* @param string $css
*
* @return array
*/
private function splitCssAndMediaQuery( $css ) {
$css = preg_replace_callback( '#@media\\s+(?:only\\s)?(?:[\\s{\(]|screen|all)\\s?[^{]+{.*}\\s*}\\s*#misU', array( $this, '_media_concat' ), $css );
// filter the CSS
$search = array(
// get rid of css comment code
'/\\/\\*.*\\*\\//sU',
// strip out any import directives
'/^\\s*@import\\s[^;]+;/misU',
// strip remains media enclosures
'/^\\s*@media\\s[^{]+{(.*)}\\s*}\\s/misU',
);
$replace = array(
'',
'',
'',
);
// clean CSS before output
$css = preg_replace( $search, $replace, $css );
return array( 'css' => $css, 'media' => self::$_media );
}
private function _media_concat( $matches ) {
self::$_media .= $matches[0];
}
/**
* Creates a DOMDocument instance with the current HTML.
*
* @return DOMDocument
*/
private function createXmlDocument() {
$xmlDocument = new DOMDocument;
$xmlDocument->encoding = self::ENCODING;
$xmlDocument->strictErrorChecking = false;
$xmlDocument->formatOutput = true;
$libXmlState = libxml_use_internal_errors( true );
$xmlDocument->loadHTML( $this->getUnifiedHtml() );
libxml_clear_errors();
libxml_use_internal_errors( $libXmlState );
$xmlDocument->normalizeDocument();
return $xmlDocument;
}
/**
* Returns the HTML with the non-ASCII characters converts into HTML entities and the unprocessable HTML tags removed.
*
* @return string the unified HTML
*
* @throws BadMethodCallException
*/
private function getUnifiedHtml() {
if ( !empty( $this->unprocessableHtmlTags ) ) {
$unprocessableHtmlTags = implode( '|', $this->unprocessableHtmlTags );
$bodyWithoutUnprocessableTags = preg_replace( '/<\\/?(' . $unprocessableHtmlTags . ')[^>]*>/i', '', $this->html );
} else {
$bodyWithoutUnprocessableTags = $this->html;
}
if ( function_exists( 'mb_convert_encoding' ) ) {
return mb_convert_encoding( $bodyWithoutUnprocessableTags, 'HTML-ENTITIES', self::ENCODING );
} else {
return htmlspecialchars_decode( utf8_decode( htmlentities( $bodyWithoutUnprocessableTags, ENT_COMPAT, self::ENCODING, false ) ) );
}
}
/**
* @param array $a
* @param array $b
*
* @return integer
*/
private function sortBySelectorPrecedence( array $a, array $b ) {
$precedenceA = $this->getCssSelectorPrecedence( $a['selector'] );
$precedenceB = $this->getCssSelectorPrecedence( $b['selector'] );
// We want these sorted in ascending order so selectors with lesser precedence get processed first and
// selectors with greater precedence get sorted last.
// The parenthesis around the -1 are necessary to avoid a PHP_CodeSniffer warning about missing spaces around
// arithmetic operators.
// @see http://forge.typo3.org/issues/55605
$precedenceForEquals = ( $a['line'] < $b['line'] ? ( - 1 ) : 1 );
$precedenceForNotEquals = ( $precedenceA < $precedenceB ? ( - 1 ) : 1 );
return ( $precedenceA === $precedenceB ) ? $precedenceForEquals : $precedenceForNotEquals;
}
/**
* @param string $selector
*
* @return integer
*/
private function getCssSelectorPrecedence( $selector ) {
$selectorKey = md5( $selector );
if ( !isset( $this->caches[self::CACHE_KEY_SELECTOR][$selectorKey] ) ) {
$precedence = 0;
$value = 100;
// ids: worth 100, classes: worth 10, elements: worth 1
$search = array( '\\#', '\\.', '' );
foreach ( $search as $s ) {
if ( trim( $selector == '' ) ) {
break;
}
$number = 0;
$selector = preg_replace( '/' . $s . '\\w+/', '', $selector, - 1, $number );
$precedence += ( $value * $number );
$value /= 10;
}
$this->caches[self::CACHE_KEY_SELECTOR][$selectorKey] = $precedence;
}
return $this->caches[self::CACHE_KEY_SELECTOR][$selectorKey];
}
/**
* Right now, we support all CSS 1 selectors and most CSS2/3 selectors.
*
* @see http://plasmasturm.org/log/444/
*
* @param string $paramCssSelector
*
* @return string
*/
private function translateCssToXpath( $paramCssSelector ) {
$cssSelector = ' ' . $paramCssSelector . ' ';
$cssSelector = preg_replace_callback( '/\s+\w+\s+/', array( $this, 'strtolower' ), $cssSelector );
$cssSelector = trim( $cssSelector );
$xpathKey = md5( $cssSelector );
if ( !isset( $this->caches[self::CACHE_KEY_XPATH][$xpathKey] ) ) {
// returns an Xpath selector
$search = array(
// Matches any element that is a child of parent.
'/\\s+>\\s+/',
// Matches any element that is an adjacent sibling.
'/\\s+\\+\\s+/',
// Matches any element that is a descendant of an parent element element.
'/\\s+/',
// first-child pseudo-selector
'/([^\\/]+):first-child/i',
// last-child pseudo-selector
'/([^\\/]+):last-child/i',
// Matches attribute only selector
'/^\\[(\\w+)\\]/',
// Matches element with attribute
'/(\\w)\\[(\\w+)\\]/',
// Matches element with EXACT attribute
'/(\\w)\\[(\\w+)\\=[\'"]?(\\w+)[\'"]?\\]/',
);
$replace = array(
'/',
'/following-sibling::*[1]/self::',
'//',
'*[1]/self::\\1',
'*[last()]/self::\\1',
'*[@\\1]',
'\\1[@\\2]',
'\\1[@\\2="\\3"]',
);
$cssSelector = '//' . preg_replace( $search, $replace, $cssSelector );
$cssSelector = preg_replace_callback( self::ID_ATTRIBUTE_MATCHER, array( $this, 'matchIdAttributes' ), $cssSelector );
$cssSelector = preg_replace_callback( self::CLASS_ATTRIBUTE_MATCHER, array( $this, 'matchClassAttributes' ), $cssSelector );
// Advanced selectors are going to require a bit more advanced emogrification.
// When we required PHP 5.3, we could do this with closures.
$cssSelector = preg_replace_callback(
'/([^\\/]+):nth-child\\(\s*(odd|even|[+\-]?\\d|[+\\-]?\\d?n(\\s*[+\\-]\\s*\\d)?)\\s*\\)/i',
array( $this, 'translateNthChild' ), $cssSelector
);
$cssSelector = preg_replace_callback(
'/([^\\/]+):nth-of-type\\(\s*(odd|even|[+\-]?\\d|[+\\-]?\\d?n(\\s*[+\\-]\\s*\\d)?)\\s*\\)/i',
array( $this, 'translateNthOfType' ), $cssSelector
);
$this->caches[self::CACHE_KEY_SELECTOR][$xpathKey] = $cssSelector;
}
return $this->caches[self::CACHE_KEY_SELECTOR][$xpathKey];
}
/**
* @param array $match
*
* @return string
*/
private function matchIdAttributes( array $match ) {
return ( strlen( $match[1] ) ? $match[1] : '*' ) . '[@id="' . $match[2] . '"]';
}
/**
* @param array $match
*
* @return string
*/
private function matchClassAttributes( array $match ) {
return ( strlen( $match[1] ) ? $match[1] : '*' ) . '[contains(concat(" ",@class," "),concat(" ","' .
implode(
'"," "))][contains(concat(" ",@class," "),concat(" ","',
explode( '.', substr( $match[2], 1 ) )
) . '"," "))]';
}
/**
* @param array $match
*
* @return string
*/
private function translateNthChild( array $match ) {
$result = $this->parseNth( $match );
if ( isset( $result[self::MULTIPLIER] ) ) {
if ( $result[self::MULTIPLIER] < 0 ) {
$result[self::MULTIPLIER] = abs( $result[self::MULTIPLIER] );
return sprintf( '*[(last() - position()) mod %u = %u]/self::%s', $result[self::MULTIPLIER], $result[self::INDEX], $match[1] );
} else {
return sprintf( '*[position() mod %u = %u]/self::%s', $result[self::MULTIPLIER], $result[self::INDEX], $match[1] );
}
} else {
return sprintf( '*[%u]/self::%s', $result[self::INDEX], $match[1] );
}
}
/**
* @param array $match
*
* @return string
*/
private function translateNthOfType( array $match ) {
$result = $this->parseNth( $match );
if ( isset( $result[self::MULTIPLIER] ) ) {
if ( $result[self::MULTIPLIER] < 0 ) {
$result[self::MULTIPLIER] = abs( $result[self::MULTIPLIER] );
return sprintf( '%s[(last() - position()) mod %u = %u]', $match[1], $result[self::MULTIPLIER], $result[self::INDEX] );
} else {
return sprintf( '%s[position() mod %u = %u]', $match[1], $result[self::MULTIPLIER], $result[self::INDEX] );
}
} else {
return sprintf( '%s[%u]', $match[1], $result[self::INDEX] );
}
}
/**
* @param array $match
*
* @return array
*/
private function parseNth( array $match ) {
if ( in_array( strtolower( $match[2] ), array( 'even', 'odd' ) ) ) {
$index = strtolower( $match[2] ) == 'even' ? 0 : 1;
return array( self::MULTIPLIER => 2, self::INDEX => $index );
} elseif ( stripos( $match[2], 'n' ) === false ) {
// if there is a multiplier
$index = intval( str_replace( ' ', '', $match[2] ) );
return array( self::INDEX => $index );
} else {
if ( isset( $match[3] ) ) {
$multipleTerm = str_replace( $match[3], '', $match[2] );
$index = intval( str_replace( ' ', '', $match[3] ) );
} else {
$multipleTerm = $match[2];
$index = 0;
}
$multiplier = str_ireplace( 'n', '', $multipleTerm );
if ( !strlen( $multiplier ) ) {
$multiplier = 1;
} elseif ( $multiplier == 0 ) {
return array( self::INDEX => $index );
} else {
$multiplier = intval( $multiplier );
}
while ( $index < 0 ) {
$index += abs( $multiplier );
}
return array( self::MULTIPLIER => $multiplier, self::INDEX => $index );
}
}
/**
* Parses a CSS declaration block into property name/value pairs.
*
* Example:
*
* The declaration block
*
* "color: #000; font-weight: bold;"
*
* will be parsed into the following array:
*
* "color" => "#000"
* "font-weight" => "bold"
*
* @param string $cssDeclarationBlock the CSS declaration block without the curly braces, may be empty
*
* @return array the CSS declarations with the property names as array keys and the property values as array values
*/
private function parseCssDeclarationBlock( $cssDeclarationBlock ) {
if ( isset( $this->caches[self::CACHE_KEY_CSS_DECLARATION_BLOCK][$cssDeclarationBlock] ) ) {
return $this->caches[self::CACHE_KEY_CSS_DECLARATION_BLOCK][$cssDeclarationBlock];
}
$properties = array();
$declarations = explode( ';', $cssDeclarationBlock );
foreach ( $declarations as $declaration ) {
$matches = array();
if ( !preg_match( '/ *([A-Za-z\\-]+) *: *([^;]+) */', $declaration, $matches ) ) {
continue;
}
$propertyName = strtolower( $matches[1] );
$propertyValue = $matches[2];
$properties[$propertyName] = $propertyValue;
}
$this->caches[self::CACHE_KEY_CSS_DECLARATION_BLOCK][$cssDeclarationBlock] = $properties;
return $properties;
}
}
}
Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists