Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace TijsVerkoyen\CssToInlineStyles\Css;

use TijsVerkoyen\CssToInlineStyles\Css\Rule\Processor as RuleProcessor;

use TijsVerkoyen\CssToInlineStyles\Css\Rule\Rule;

class Processor

{

    /**

     * Get the rules from a given CSS-string

     *

     * @param string $css

     * @param Rule[] $existingRules

     *

     * @return Rule[]

     */

    public function getRules($css, $existingRules = array())

    {

        $css = $this->doCleanup($css);

        $rulesProcessor = new RuleProcessor();

        $rules = $rulesProcessor->splitIntoSeparateRules($css);

        return $rulesProcessor->convertArrayToObjects($rules, $existingRules);

    }

    /**

     * Get the CSS from the style-tags in the given HTML-string

     *

     * @param string $html

     *

     * @return string

     */

    public function getCssFromStyleTags($html)

    {

        $css = '';

        $matches = array();

        $htmlNoComments = preg_replace('|<!--.*?-->|s', '', $html);

        preg_match_all('|<style(?:\s.*)?>(.*)</style>|isU', $htmlNoComments, $matches);

        if (!empty($matches[1])) {

            foreach ($matches[1] as $match) {

                $css .= trim($match) . "\n";

            }

        }

        return $css;

    }

    /**

     * @param string $css

     *

     * @return string

     */

    private function doCleanup($css)

    {

        // remove charset

        $css = preg_replace('/@charset "[^"]++";/', '', $css);

        // remove media queries

        $css = preg_replace('/@media [^{]*+{([^{}]++|{[^{}]*+})*+}/', '', $css);

        $css = str_replace(array("\r", "\n"), '', $css);

        $css = str_replace(array("\t"), ' ', $css);

        $css = str_replace('"', '\'', $css);

        $css = preg_replace('|/\*.*?\*/|', '', $css);

        $css = preg_replace('/\s\s++/', ' ', $css);

        $css = trim($css);

        return $css;

    }

}