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<?php |
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|
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namespace TijsVerkoyen\CssToInlineStyles\Css; |
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|
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use TijsVerkoyen\CssToInlineStyles\Css\Rule\Processor as RuleProcessor; |
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use TijsVerkoyen\CssToInlineStyles\Css\Rule\Rule; |
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|
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class Processor |
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{ |
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/** |
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* Get the rules from a given CSS-string |
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* |
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* @param string $css |
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* @param Rule[] $existingRules |
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* |
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* @return Rule[] |
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*/ |
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public function getRules($css, $existingRules = array()) |
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{ |
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$css = $this->doCleanup($css); |
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$rulesProcessor = new RuleProcessor(); |
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$rules = $rulesProcessor->splitIntoSeparateRules($css); |
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|
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return $rulesProcessor->convertArrayToObjects($rules, $existingRules); |
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} |
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|
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/** |
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* Get the CSS from the style-tags in the given HTML-string |
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* |
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* @param string $html |
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* |
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* @return string |
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*/ |
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public function getCssFromStyleTags($html) |
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{ |
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$css = ''; |
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$matches = array(); |
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$htmlNoComments = preg_replace('|<!--.*?-->|s', '', $html) ?? $html; |
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preg_match_all('|<style(?:\s.*)?>(.*)</style>|isU', $htmlNoComments, $matches); |
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|
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if (!empty($matches[1])) { |
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foreach ($matches[1] as $match) { |
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$css .= trim($match) . "\n"; |
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} |
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} |
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|
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return $css; |
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} |
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|
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/** |
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* @param string $css |
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* |
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* @return string |
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*/ |
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private function doCleanup($css) |
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{ |
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// remove charset |
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$css = preg_replace('/@charset "[^"]++";/', '', $css) ?? $css; |
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// remove media queries |
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$css = preg_replace('/@media [^{]*+{([^{}]++|{[^{}]*+})*+}/', '', $css) ?? $css; |
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|
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$css = str_replace(array("\r", "\n"), '', $css); |
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$css = str_replace(array("\t"), ' ', $css); |
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$css = str_replace('"', '\'', $css); |
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$css = preg_replace('|/\*.*?\*/|', '', $css) ?? $css; |
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$css = preg_replace('/\s\s++/', ' ', $css) ?? $css; |
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$css = trim($css); |
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|
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return $css; |
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} |
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} |
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