fix^2

Author: northys

src/Northys/CSSInliner/CSSInliner.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace Northys\CSSInliner;
+
+use Northys\CSSInliner\Exceptions;
+use DOMDocument;
+use DOMXPath;
+use Exception;
+use Sabberworm\CSS;
+use Symfony\Component\CssSelector\CssSelector;
+
+
+/**
+ * Class CSSInliner
+ * @author Northys
+ * @package Northys\CSSInliner
+ */
+class CSSInliner
+{
+
+	/**
+	 * @var CSS\CSSList\Document
+	 */
+	private $css;
+
+	/**
+	 * @var \DOMDocument
+	 */
+	private $dom;
+
+	/**
+	 * @var \DOMXPath
+	 */
+	private $finder;
+
+
+    /**
+     * Provides you an option to add as many CSS files as you want
+     * @param string $filename represents css file path
+     * @throws \Exception
+     */
+    public function addCSS($filename)
+	{
+		if ( ! $css = @file_get_contents($filename)) {
+			throw new Exceptions\InvalidCssFilePathException('Invalid css file path provided.');
+		}
+		// merge all CSS content into $this-css variable
+		$this->css .= $css;
+	}
+
+
+    /**
+     * Gets styles from <style> html tag - if there are any it will be merged with another styles added by addCss()
+     * @return CSS\CSSList\Document
+     * @throws \Exception
+     */
+    private function getCSS() {
+		// get styles inside <style> tags in provided HTML
+		foreach ($this->dom->getElementsByTagName('style') as $style) {
+			$this->css .= $style->textContent;
+		}
+		$parser = new CSS\Parser($this->css);
+
+		$css = $parser->parse();
+		if (!$css) {
+			throw new Exceptions\NoCssRulesException('There are no CSS rules provided.');
+		}
+		return $css;
+	}
+
+
+    /**
+     * Prepares everything and inserts inline styles into html
+     * @param string $html represents html document
+     * @return string
+     */
+    public function render($html)
+	{
+		$this->dom = new \DOMDocument;
+		$this->dom->loadHTML($html);
+		$this->finder = new \DOMXPath($this->dom);
+		$this->css = $this->getCSS();
+		foreach ($this->css->getAllRuleSets() as $ruleSet) {
+			$selector = $ruleSet->getSelector();
+			foreach ($this->finder->evaluate(CssSelector::toXPath($selector[0])) as $node) {
+				if ($node->getAttribute('style')) {
+					$node->setAttribute('style', $node->getAttribute('style') . implode(' ', $ruleSet->getRules()));
+				} else {
+					$node->setAttribute('style', implode(' ', $ruleSet->getRules()));
+				}
+			}
+		}
+
+		return $this->dom->saveHTML();
+	}
+
+}

src/Northys/CSSInliner/Exceptions/Exceptions.php

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+<?php
+/**
+ * Created by PhpStorm.
+ * User: Northys
+ * Date: 25.7.14
+ * Time: 4:10
+ */
+
+namespace Northys\CSSInliner\Exceptions;
+
+
+/**
+ * The exception that is thrown when invalid css file path is provided.
+ * @package Northys\CSSInliner\Exceptions
+ */
+class InvalidCssFilePathException extends \Exception {
+
+}
+
+
+/**
+ * The exception that is thrown when there are no css rules.
+ * @package Northys\CSSInliner\Exceptions
+ */
+class NoCssRulesException extends \Exception {
+
+}