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Move plugins to webmail repository.
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RainLoop Team
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700
plugins/convert-headers-styles/CssToInlineStyles.php
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700
plugins/convert-headers-styles/CssToInlineStyles.php
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@ -0,0 +1,700 @@
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<?php
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namespace TijsVerkoyen\CssToInlineStyles;
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/**
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* CSS to Inline Styles class
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*
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* @author Tijs Verkoyen <php-css-to-inline-styles@verkoyen.eu>
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* @version 1.1.0
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* @copyright Copyright (c), Tijs Verkoyen. All rights reserved.
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* @license BSD License
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*/
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class CssToInlineStyles
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{
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/**
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* The CSS to use
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*
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* @var string
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*/
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private $css;
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/**
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* The processed CSS rules
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*
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* @var array
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*/
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private $cssRules;
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/**
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* Should the generated HTML be cleaned
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*
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* @var bool
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*/
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private $cleanup = false;
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/**
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* The encoding to use.
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*
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* @var string
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*/
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private $encoding = 'UTF-8';
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/**
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* The HTML to process
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*
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* @var string
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*/
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private $html;
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/**
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* Use inline-styles block as CSS
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*
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* @var bool
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*/
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private $useInlineStylesBlock = false;
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/*
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* Strip original style tags
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*
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* @var bool
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*/
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private $stripOriginalStyleTags = false;
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/**
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* Creates an instance, you could set the HTML and CSS here, or load it
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* later.
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*
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* @return void
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* @param string[optional] $html The HTML to process.
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* @param string[optional] $css The CSS to use.
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*/
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public function __construct($html = null, $css = null)
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{
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if($html !== null) $this->setHTML($html);
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if($css !== null) $this->setCSS($css);
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}
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/**
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* Convert a CSS-selector into an xPath-query
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*
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* @return string
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* @param string $selector The CSS-selector.
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*/
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private function buildXPathQuery($selector)
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{
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// redefine
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$selector = (string) $selector;
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// the CSS selector
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$cssSelector = array(
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// E F, Matches any F element that is a descendant of an E element
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'/(\w)\s+(\w)/',
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// E > F, Matches any F element that is a child of an element E
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'/(\w)\s*>\s*(\w)/',
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// E:first-child, Matches element E when E is the first child of its parent
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'/(\w):first-child/',
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// E + F, Matches any F element immediately preceded by an element
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'/(\w)\s*\+\s*(\w)/',
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// E[foo], Matches any E element with the "foo" attribute set (whatever the value)
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'/(\w)\[([\w\-]+)]/',
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// E[foo="warning"], Matches any E element whose "foo" attribute value is exactly equal to "warning"
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'/(\w)\[([\w\-]+)\=\"(.*)\"]/',
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// div.warning, HTML only. The same as DIV[class~="warning"]
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'/(\w+|\*)+\.([\w\-]+)+/',
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// .warning, HTML only. The same as *[class~="warning"]
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'/\.([\w\-]+)/',
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// E#myid, Matches any E element with id-attribute equal to "myid"
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'/(\w+)+\#([\w\-]+)/',
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// #myid, Matches any element with id-attribute equal to "myid"
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'/\#([\w\-]+)/'
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);
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// the xPath-equivalent
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$xPathQuery = array(
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// E F, Matches any F element that is a descendant of an E element
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'\1//\2',
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// E > F, Matches any F element that is a child of an element E
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'\1/\2',
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// E:first-child, Matches element E when E is the first child of its parent
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'*[1]/self::\1',
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// E + F, Matches any F element immediately preceded by an element
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'\1/following-sibling::*[1]/self::\2',
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// E[foo], Matches any E element with the "foo" attribute set (whatever the value)
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'\1 [ @\2 ]',
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// E[foo="warning"], Matches any E element whose "foo" attribute value is exactly equal to "warning"
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'\1[ contains( concat( " ", @\2, " " ), concat( " ", "\3", " " ) ) ]',
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// div.warning, HTML only. The same as DIV[class~="warning"]
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'\1[ contains( concat( " ", @class, " " ), concat( " ", "\2", " " ) ) ]',
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// .warning, HTML only. The same as *[class~="warning"]
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'*[ contains( concat( " ", @class, " " ), concat( " ", "\1", " " ) ) ]',
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// E#myid, Matches any E element with id-attribute equal to "myid"
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'\1[ @id = "\2" ]',
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// #myid, Matches any element with id-attribute equal to "myid"
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'*[ @id = "\1" ]'
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);
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// return
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$xPath = (string) '//' . preg_replace($cssSelector, $xPathQuery, $selector);
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return str_replace('] *', ']//*', $xPath);
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}
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/**
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* Calculate the specifity for the CSS-selector
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*
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* @return int
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* @param string $selector The selector to calculate the specifity for.
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*/
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private function calculateCSSSpecifity($selector)
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{
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// cleanup selector
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$selector = str_replace(array('>', '+'), array(' > ', ' + '), $selector);
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// init var
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$specifity = 0;
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// split the selector into chunks based on spaces
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$chunks = explode(' ', $selector);
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// loop chunks
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foreach ($chunks as $chunk) {
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// an ID is important, so give it a high specifity
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if(strstr($chunk, '#') !== false) $specifity += 100;
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// classes are more important than a tag, but less important then an ID
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elseif(strstr($chunk, '.')) $specifity += 10;
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// anything else isn't that important
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else $specifity += 1;
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}
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// return
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return $specifity;
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}
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/**
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* Cleanup the generated HTML
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*
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* @return string
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* @param string $html The HTML to cleanup.
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*/
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private function cleanupHTML($html)
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{
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// remove classes
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$html = preg_replace('/(\s)+class="(.*)"(\s)+/U', ' ', $html);
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// remove IDs
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$html = preg_replace('/(\s)+id="(.*)"(\s)+/U', ' ', $html);
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// return
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return $html;
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}
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/**
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* Converts the loaded HTML into an HTML-string with inline styles based on the loaded CSS
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*
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* @return string
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* @param bool[optional] $outputXHTML Should we output valid XHTML?
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*/
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public function convert($outputXHTML = false)
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{
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// redefine
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$outputXHTML = (bool) $outputXHTML;
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// validate
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if($this->html == null) throw new Exception('No HTML provided.');
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// should we use inline style-block
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if ($this->useInlineStylesBlock) {
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// init var
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$matches = array();
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// match the style blocks
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preg_match_all('|<style(.*)>(.*)</style>|isU', $this->html, $matches);
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// any style-blocks found?
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if (!empty($matches[2])) {
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// add
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foreach($matches[2] as $match) $this->css .= trim($match) ."\n";
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}
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}
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// process css
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$this->processCSS();
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// create new DOMDocument
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$document = new \DOMDocument('1.0', $this->getEncoding());
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// set error level
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libxml_use_internal_errors(true);
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// load HTML
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// $document->loadHTML($this->html);
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$document->loadHTML('<'.'?xml version="1.0" encoding="'.$this->getEncoding().'"?'.'><head><meta http-equiv="Content-Type" content="text/html; charset='.$this->getEncoding().'"></head>'.$this->html);
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// create new XPath
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$xPath = new \DOMXPath($document);
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// any rules?
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if (!empty($this->cssRules)) {
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// loop rules
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foreach ($this->cssRules as $rule) {
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// init var
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$query = $this->buildXPathQuery($rule['selector']);
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// validate query
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if($query === false) continue;
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// search elements
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$elements = $xPath->query($query);
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// validate elements
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if($elements === false) continue;
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// loop found elements
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foreach ($elements as $element) {
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// no styles stored?
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if ($element->attributes->getNamedItem(
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'data-css-to-inline-styles-original-styles'
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) == null) {
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// init var
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$originalStyle = '';
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if ($element->attributes->getNamedItem('style') !== null) {
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$originalStyle = $element->attributes->getNamedItem('style')->value;
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}
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// store original styles
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$element->setAttribute(
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'data-css-to-inline-styles-original-styles',
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$originalStyle
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);
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// clear the styles
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$element->setAttribute('style', '');
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}
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// init var
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$properties = array();
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// get current styles
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$stylesAttribute = $element->attributes->getNamedItem('style');
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// any styles defined before?
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if ($stylesAttribute !== null) {
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// get value for the styles attribute
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$definedStyles = (string) $stylesAttribute->value;
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// split into properties
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$definedProperties = (array) explode(';', $definedStyles);
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// loop properties
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foreach ($definedProperties as $property) {
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// validate property
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if($property == '') continue;
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// split into chunks
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$chunks = (array) explode(':', trim($property), 2);
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// validate
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if(!isset($chunks[1])) continue;
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// loop chunks
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$properties[$chunks[0]] = trim($chunks[1]);
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}
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}
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// add new properties into the list
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foreach ($rule['properties'] as $key => $value) {
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$properties[$key] = $value;
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}
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// build string
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$propertyChunks = array();
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// build chunks
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foreach ($properties as $key => $values) {
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foreach ((array) $values as $value) {
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$propertyChunks[] = $key . ': ' . $value . ';';
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}
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}
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// build properties string
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$propertiesString = implode(' ', $propertyChunks);
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// set attribute
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if ($propertiesString != '') {
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$element->setAttribute('style', $propertiesString);
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}
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}
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}
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// reapply original styles
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$query = $this->buildXPathQuery(
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'*[@data-css-to-inline-styles-original-styles]'
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);
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// validate query
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if($query === false) return;
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// search elements
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$elements = $xPath->query($query);
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// loop found elements
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foreach ($elements as $element) {
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// get the original styles
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$originalStyle = $element->attributes->getNamedItem(
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'data-css-to-inline-styles-original-styles'
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)->value;
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if ($originalStyle != '') {
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$originalProperties = array();
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$originalStyles = (array) explode(';', $originalStyle);
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foreach ($originalStyles as $property) {
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// validate property
|
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if($property == '') continue;
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// split into chunks
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$chunks = (array) explode(':', trim($property), 2);
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|
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// validate
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if(!isset($chunks[1])) continue;
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// loop chunks
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$originalProperties[$chunks[0]] = trim($chunks[1]);
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}
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|
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// get current styles
|
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$stylesAttribute = $element->attributes->getNamedItem('style');
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$properties = array();
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|
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// any styles defined before?
|
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if ($stylesAttribute !== null) {
|
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// get value for the styles attribute
|
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$definedStyles = (string) $stylesAttribute->value;
|
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|
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// split into properties
|
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$definedProperties = (array) explode(';', $definedStyles);
|
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|
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// loop properties
|
||||
foreach ($definedProperties as $property) {
|
||||
// validate property
|
||||
if($property == '') continue;
|
||||
|
||||
// split into chunks
|
||||
$chunks = (array) explode(':', trim($property), 2);
|
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|
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// validate
|
||||
if(!isset($chunks[1])) continue;
|
||||
|
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// loop chunks
|
||||
$properties[$chunks[0]] = trim($chunks[1]);
|
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}
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}
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// add new properties into the list
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foreach ($originalProperties as $key => $value) {
|
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$properties[$key] = $value;
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}
|
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|
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// build string
|
||||
$propertyChunks = array();
|
||||
|
||||
// build chunks
|
||||
foreach ($properties as $key => $values) {
|
||||
foreach ((array) $values as $value) {
|
||||
$propertyChunks[] = $key . ': ' . $value . ';';
|
||||
}
|
||||
}
|
||||
|
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// build properties string
|
||||
$propertiesString = implode(' ', $propertyChunks);
|
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|
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// set attribute
|
||||
if($propertiesString != '') $element->setAttribute(
|
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'style', $propertiesString
|
||||
);
|
||||
}
|
||||
|
||||
// remove placeholder
|
||||
$element->removeAttribute(
|
||||
'data-css-to-inline-styles-original-styles'
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// should we output XHTML?
|
||||
if ($outputXHTML) {
|
||||
// set formating
|
||||
$document->formatOutput = true;
|
||||
|
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// get the HTML as XML
|
||||
$html = $document->saveXML(null, LIBXML_NOEMPTYTAG);
|
||||
|
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// get start of the XML-declaration
|
||||
$startPosition = strpos($html, '<?xml');
|
||||
|
||||
// valid start position?
|
||||
if ($startPosition !== false) {
|
||||
// get end of the xml-declaration
|
||||
$endPosition = strpos($html, '?>', $startPosition);
|
||||
|
||||
// remove the XML-header
|
||||
$html = ltrim(substr($html, $endPosition + 1));
|
||||
}
|
||||
}
|
||||
|
||||
// just regular HTML 4.01 as it should be used in newsletters
|
||||
else {
|
||||
// get the HTML
|
||||
$html = $document->saveHTML();
|
||||
}
|
||||
|
||||
// cleanup the HTML if we need to
|
||||
if($this->cleanup) $html = $this->cleanupHTML($html);
|
||||
|
||||
// strip original style tags if we need to
|
||||
if ($this->stripOriginalStyleTags) {
|
||||
$html = $this->stripOriginalStyleTags($html);
|
||||
}
|
||||
|
||||
// return
|
||||
return $html;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Get the encoding to use
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
private function getEncoding()
|
||||
{
|
||||
return $this->encoding;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Process the loaded CSS
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
private function processCSS()
|
||||
{
|
||||
// init vars
|
||||
$css = (string) $this->css;
|
||||
|
||||
// remove newlines
|
||||
$css = str_replace(array("\r", "\n"), '', $css);
|
||||
|
||||
// replace double quotes by single quotes
|
||||
$css = str_replace('"', '\'', $css);
|
||||
|
||||
// remove comments
|
||||
$css = preg_replace('|/\*.*?\*/|', '', $css);
|
||||
|
||||
// remove spaces
|
||||
$css = preg_replace('/\s\s+/', ' ', $css);
|
||||
|
||||
// rules are splitted by }
|
||||
$rules = (array) explode('}', $css);
|
||||
|
||||
// init var
|
||||
$i = 1;
|
||||
|
||||
// loop rules
|
||||
foreach ($rules as $rule) {
|
||||
// split into chunks
|
||||
$chunks = explode('{', $rule);
|
||||
|
||||
// invalid rule?
|
||||
if(!isset($chunks[1])) continue;
|
||||
|
||||
// set the selectors
|
||||
$selectors = trim($chunks[0]);
|
||||
|
||||
// get cssProperties
|
||||
$cssProperties = trim($chunks[1]);
|
||||
|
||||
// split multiple selectors
|
||||
$selectors = (array) explode(',', $selectors);
|
||||
|
||||
// loop selectors
|
||||
foreach ($selectors as $selector) {
|
||||
// cleanup
|
||||
$selector = trim($selector);
|
||||
|
||||
// build an array for each selector
|
||||
$ruleSet = array();
|
||||
|
||||
// store selector
|
||||
$ruleSet['selector'] = $selector;
|
||||
|
||||
// process the properties
|
||||
$ruleSet['properties'] = $this->processCSSProperties(
|
||||
$cssProperties
|
||||
);
|
||||
|
||||
// calculate specifity
|
||||
$ruleSet['specifity'] = $this->calculateCSSSpecifity(
|
||||
$selector
|
||||
) + $i;
|
||||
|
||||
// add into global rules
|
||||
$this->cssRules[] = $ruleSet;
|
||||
}
|
||||
|
||||
// increment
|
||||
$i++;
|
||||
}
|
||||
|
||||
// sort based on specifity
|
||||
if (!empty($this->cssRules)) {
|
||||
usort($this->cssRules, array(__CLASS__, 'sortOnSpecifity'));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Process the CSS-properties
|
||||
*
|
||||
* @return array
|
||||
* @param string $propertyString The CSS-properties.
|
||||
*/
|
||||
private function processCSSProperties($propertyString)
|
||||
{
|
||||
// split into chunks
|
||||
$properties = (array) explode(';', $propertyString);
|
||||
|
||||
// init var
|
||||
$pairs = array();
|
||||
|
||||
// loop properties
|
||||
foreach ($properties as $property) {
|
||||
// split into chunks
|
||||
$chunks = (array) explode(':', $property, 2);
|
||||
|
||||
// validate
|
||||
if(!isset($chunks[1])) continue;
|
||||
|
||||
// cleanup
|
||||
$chunks[0] = trim($chunks[0]);
|
||||
$chunks[1] = trim($chunks[1]);
|
||||
|
||||
// add to pairs array
|
||||
if(!isset($pairs[$chunks[0]]) ||
|
||||
!in_array($chunks[1], $pairs[$chunks[0]])) {
|
||||
$pairs[$chunks[0]][] = $chunks[1];
|
||||
}
|
||||
}
|
||||
|
||||
// sort the pairs
|
||||
ksort($pairs);
|
||||
|
||||
// return
|
||||
return $pairs;
|
||||
}
|
||||
|
||||
/**
|
||||
* Should the IDs and classes be removed?
|
||||
*
|
||||
* @return void
|
||||
* @param bool[optional] $on Should we enable cleanup?
|
||||
*/
|
||||
public function setCleanup($on = true)
|
||||
{
|
||||
$this->cleanup = (bool) $on;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set CSS to use
|
||||
*
|
||||
* @return void
|
||||
* @param string $css The CSS to use.
|
||||
*/
|
||||
public function setCSS($css)
|
||||
{
|
||||
$this->css = (string) $css;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the encoding to use with the DOMDocument
|
||||
*
|
||||
* @return void
|
||||
* @param string $encoding The encoding to use.
|
||||
*/
|
||||
public function setEncoding($encoding)
|
||||
{
|
||||
$this->encoding = (string) $encoding;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set HTML to process
|
||||
*
|
||||
* @return void
|
||||
* @param string $html The HTML to process.
|
||||
*/
|
||||
public function setHTML($html)
|
||||
{
|
||||
$this->html = (string) $html;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set use of inline styles block
|
||||
* If this is enabled the class will use the style-block in the HTML.
|
||||
*
|
||||
* @return void
|
||||
* @param bool[optional] $on Should we process inline styles?
|
||||
*/
|
||||
public function setUseInlineStylesBlock($on = true)
|
||||
{
|
||||
$this->useInlineStylesBlock = (bool) $on;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set strip original style tags
|
||||
* If this is enabled the class will remove all style tags in the HTML.
|
||||
*
|
||||
* @return void
|
||||
* @param bool[optional] $onShould we process inline styles?
|
||||
*/
|
||||
public function setStripOriginalStyleTags($on = true)
|
||||
{
|
||||
$this->stripOriginalStyleTags = (bool) $on;
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip style tags into the generated HTML
|
||||
*
|
||||
* @return string
|
||||
* @param string $html The HTML to strip style tags.
|
||||
*/
|
||||
private function stripOriginalStyleTags($html)
|
||||
{
|
||||
return preg_replace('|<style(.*)>(.*)</style>|isU', '', $html);
|
||||
}
|
||||
|
||||
/**
|
||||
* Sort an array on the specifity element
|
||||
*
|
||||
* @return int
|
||||
* @param array $e1 The first element.
|
||||
* @param array $e2 The second element.
|
||||
*/
|
||||
private static function sortOnSpecifity($e1, $e2)
|
||||
{
|
||||
// validate
|
||||
if(!isset($e1['specifity']) || !isset($e2['specifity'])) return 0;
|
||||
|
||||
// lower
|
||||
if($e1['specifity'] < $e2['specifity']) return -1;
|
||||
|
||||
// higher
|
||||
if($e1['specifity'] > $e2['specifity']) return 1;
|
||||
|
||||
// fallback
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
20
plugins/convert-headers-styles/LICENSE
Normal file
20
plugins/convert-headers-styles/LICENSE
Normal file
|
|
@ -0,0 +1,20 @@
|
|||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2013 RainLoop Team
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
1
plugins/convert-headers-styles/README
Normal file
1
plugins/convert-headers-styles/README
Normal file
|
|
@ -0,0 +1 @@
|
|||
Plugin used for processing complex embedded styles in mail messages. In some cases, it can improve rendering HTML mails.
|
||||
1
plugins/convert-headers-styles/VERSION
Normal file
1
plugins/convert-headers-styles/VERSION
Normal file
|
|
@ -0,0 +1 @@
|
|||
1.3
|
||||
29
plugins/convert-headers-styles/index.php
Normal file
29
plugins/convert-headers-styles/index.php
Normal file
|
|
@ -0,0 +1,29 @@
|
|||
<?php
|
||||
|
||||
class ConvertHeadersStylesPlugin extends \RainLoop\Plugins\AbstractPlugin
|
||||
{
|
||||
public function Init()
|
||||
{
|
||||
$this->addHook('filter.result-message', 'FilterResultMessage');
|
||||
}
|
||||
|
||||
/**
|
||||
* @param \MailSo\Mail\Message &$oMessage
|
||||
*/
|
||||
public function FilterResultMessage(&$oMessage)
|
||||
{
|
||||
if ($oMessage)
|
||||
{
|
||||
$sHtml = $oMessage->Html();
|
||||
if ($sHtml && 0 < strlen($sHtml))
|
||||
{
|
||||
include_once __DIR__.'/CssToInlineStyles.php';
|
||||
|
||||
$oCSSToInlineStyles = new \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($sHtml);
|
||||
$oCSSToInlineStyles->setEncoding('utf-8');
|
||||
$oCSSToInlineStyles->setUseInlineStylesBlock(true);
|
||||
$oMessage->SetHtml($oCSSToInlineStyles->convert().'<!-- convert-headers-styles-plugin -->');
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue