Make emogrifier works with PHP 5.2, closes #7179
This commit is contained in:
Claudio Sanches
parent
586025b17e
commit
ea908283a3
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@ -113,6 +113,8 @@ class Emogrifier {
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*/
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public $preserveEncoding = FALSE;
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public static $_media = '';
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/**
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* The constructor.
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*
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@ -172,12 +174,12 @@ class Emogrifier {
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*
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* @return void
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*
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* @throws \InvalidArgumentException
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* @throws InvalidArgumentException
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*/
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private function clearCache($key) {
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$allowedCacheKeys = array(self::CACHE_KEY_CSS, self::CACHE_KEY_SELECTOR, self::CACHE_KEY_XPATH, self::CACHE_KEY_CSS_DECLARATION_BLOCK);
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if (!in_array($key, $allowedCacheKeys, TRUE)) {
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throw new \InvalidArgumentException('Invalid cache key: ' . $key, 1391822035);
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throw new InvalidArgumentException('Invalid cache key: ' . $key, 1391822035);
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}
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$this->caches[$key] = array();
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@ -230,15 +232,15 @@ class Emogrifier {
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*
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* @return string
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*
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* @throws \BadMethodCallException
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* @throws BadMethodCallException
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*/
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public function emogrify() {
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if ($this->html === '') {
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throw new \BadMethodCallException('Please set some HTML first before calling emogrify.', 1390393096);
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throw new BadMethodCallException('Please set some HTML first before calling emogrify.', 1390393096);
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}
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$xmlDocument = $this->createXmlDocument();
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$xpath = new \DOMXPath($xmlDocument);
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$xpath = new DOMXPath($xmlDocument);
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$this->clearAllCaches();
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// before be begin processing the CSS file, parse the document and normalize all existing CSS attributes (changes 'DISPLAY: none' to 'display: none');
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@ -248,15 +250,9 @@ class Emogrifier {
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$nodesWithStyleAttributes = $xpath->query('//*[@style]');
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if ($nodesWithStyleAttributes !== FALSE) {
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/** @var $nodeWithStyleAttribute \DOMNode */
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/** @var $nodeWithStyleAttribute DOMNode */
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foreach ($nodesWithStyleAttributes as $node) {
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$normalizedOriginalStyle = preg_replace_callback(
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'/[A-z\\-]+(?=\\:)/S',
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function (array $m) {
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return strtolower($m[0]);
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},
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$node->getAttribute('style')
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);
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$normalizedOriginalStyle = preg_replace_callback( '/[A-z\\-]+(?=\\:)/S', array( $this, 'strtolower' ), $node->getAttribute('style') );
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// in order to not overwrite existing style attributes in the HTML, we have to save the original HTML styles
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$nodePath = $node->getNodePath();
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@ -361,6 +357,10 @@ class Emogrifier {
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}
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}
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public function strtolower(array $m) {
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return strtolower($m[0]);
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}
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/**
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* This method merges old or existing name/value array with new name/value array
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@ -385,10 +385,10 @@ class Emogrifier {
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* Copies the media part from CSS array parts to $xmlDocument.
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*
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* @param array $cssParts
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* @param \DOMDocument $xmlDocument
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* @param DOMDocument $xmlDocument
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* @return void
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*/
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public function copyCssWithMediaToStyleNode(array $cssParts, \DOMDocument $xmlDocument) {
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public function copyCssWithMediaToStyleNode(array $cssParts, DOMDocument $xmlDocument) {
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if (isset($cssParts['media']) && $cssParts['media'] !== '') {
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$this->addStyleElementToDocument($xmlDocument, $cssParts['media']);
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}
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@ -397,10 +397,10 @@ class Emogrifier {
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/**
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* Returns CSS content.
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*
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* @param \DOMXPath $xpath
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* @param DOMXPath $xpath
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* @return string
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*/
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private function getCssFromAllStyleNodes(\DOMXPath $xpath) {
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private function getCssFromAllStyleNodes(DOMXPath $xpath) {
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$styleNodes = $xpath->query('//style');
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if ($styleNodes === FALSE) {
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@ -408,7 +408,7 @@ class Emogrifier {
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}
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$css = '';
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/** @var $styleNode \DOMNode */
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/** @var $styleNode DOMNode */
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foreach ($styleNodes as $styleNode) {
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$css .= "\n\n" . $styleNode->nodeValue;
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$styleNode->parentNode->removeChild($styleNode);
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@ -420,11 +420,11 @@ class Emogrifier {
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/**
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* Adds a style element with $css to $document.
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*
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* @param \DOMDocument $document
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* @param DOMDocument $document
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* @param string $css
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* @return void
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*/
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private function addStyleElementToDocument(\DOMDocument $document, $css) {
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private function addStyleElementToDocument(DOMDocument $document, $css) {
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$styleElement = $document->createElement('style', $css);
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$styleAttribute = $document->createAttribute('type');
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$styleAttribute->value = 'text/css';
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@ -437,10 +437,10 @@ class Emogrifier {
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/**
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* Returns the existing or creates a new head element in $document.
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*
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* @param \DOMDocument $document
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* @return \DOMNode the head element
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* @param DOMDocument $document
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* @return DOMNode the head element
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*/
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private function getOrCreateHeadElement(\DOMDocument $document) {
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private function getOrCreateHeadElement(DOMDocument $document) {
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$head = $document->getElementsByTagName('head')->item(0);
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if ($head === NULL) {
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@ -473,14 +473,7 @@ class Emogrifier {
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* @return array
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*/
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private function splitCssAndMediaQuery($css) {
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$media = '';
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$css = preg_replace_callback(
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'#@media\\s+(?:only\\s)?(?:[\\s{\(]|screen|all)\\s?[^{]+{.*}\\s*}\\s*#misU',
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function($matches) use (&$media) {
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$media .= $matches[0];
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}, $css
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);
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$css = preg_replace_callback( '#@media\\s+(?:only\\s)?(?:[\\s{\(]|screen|all)\\s?[^{]+{.*}\\s*}\\s*#misU', array( $this, '_media_concat' ), $css );
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// filter the CSS
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$search = array(
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@ -501,16 +494,20 @@ class Emogrifier {
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// clean CSS before output
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$css = preg_replace($search, $replace, $css);
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return array('css' => $css, 'media' => $media);
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return array('css' => $css, 'media' => self::$_media);
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}
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private function _media_concat( $matches ) {
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self::$_media .= $matches[0];
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}
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/**
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* Creates a DOMDocument instance with the current HTML.
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*
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* @return \DOMDocument
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* @return DOMDocument
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*/
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private function createXmlDocument() {
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$xmlDocument = new \DOMDocument;
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$xmlDocument = new DOMDocument;
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$xmlDocument->encoding = self::ENCODING;
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$xmlDocument->strictErrorChecking = FALSE;
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$xmlDocument->formatOutput = TRUE;
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@ -528,7 +525,7 @@ class Emogrifier {
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*
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* @return string the unified HTML
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*
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* @throws \BadMethodCallException
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* @throws BadMethodCallException
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*/
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private function getUnifiedHtml() {
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if (!empty($this->unprocessableHtmlTags)) {
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@ -600,12 +597,7 @@ class Emogrifier {
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*/
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private function translateCssToXpath($paramCssSelector) {
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$cssSelector = ' ' . $paramCssSelector . ' ';
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$cssSelector = preg_replace_callback('/\s+\w+\s+/',
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function(array $matches) {
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return strtolower($matches[0]);
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},
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$cssSelector
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);
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$cssSelector = preg_replace_callback( '/\s+\w+\s+/', array( $this, 'strtolower' ), $cssSelector );
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$cssSelector = trim($cssSelector);
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$xpathKey = md5($cssSelector);
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if (!isset($this->caches[self::CACHE_KEY_XPATH][$xpathKey])) {
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