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<?php |
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|
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namespace TijsVerkoyen\CssToInlineStyles\Css\Property; |
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|
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use Symfony\Component\CssSelector\Node\Specificity; |
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|
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class Processor |
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{ |
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/** |
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* Split a string into separate properties |
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* |
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* @param string $propertiesString |
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* |
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* @return string[] |
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*/ |
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public function splitIntoSeparateProperties($propertiesString) |
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{ |
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$propertiesString = $this->cleanup($propertiesString); |
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|
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$properties = (array) explode(';', $propertiesString); |
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$keysToRemove = array(); |
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$numberOfProperties = count($properties); |
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|
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for ($i = 0; $i < $numberOfProperties; $i++) { |
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$properties[$i] = trim($properties[$i]); |
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|
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// if the new property begins with base64 it is part of the current property |
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if (isset($properties[$i + 1]) && strpos(trim($properties[$i + 1]), 'base64,') === 0) { |
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$properties[$i] .= ';' . trim($properties[$i + 1]); |
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$keysToRemove[] = $i + 1; |
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} |
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} |
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|
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if (!empty($keysToRemove)) { |
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foreach ($keysToRemove as $key) { |
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unset($properties[$key]); |
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} |
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} |
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|
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return array_values($properties); |
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} |
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|
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/** |
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* @param string $string |
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* |
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* @return string |
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*/ |
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private function cleanup($string) |
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{ |
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$string = str_replace(array("\r", "\n"), '', $string); |
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$string = str_replace(array("\t"), ' ', $string); |
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$string = str_replace('"', '\'', $string); |
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$string = preg_replace('|/\*.*?\*/|', '', $string) ?? $string; |
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$string = preg_replace('/\s\s+/', ' ', $string) ?? $string; |
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|
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$string = trim($string); |
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$string = rtrim($string, ';'); |
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|
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return $string; |
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} |
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|
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/** |
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* Converts a property-string into an object |
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* |
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* @param string $property |
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* |
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* @return Property|null |
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*/ |
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public function convertToObject($property, ?Specificity $specificity = null) |
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{ |
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if (strpos($property, ':') === false) { |
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return null; |
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} |
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|
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list($name, $value) = explode(':', $property, 2); |
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|
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$name = trim($name); |
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$value = trim($value); |
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|
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if ($value === '') { |
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return null; |
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} |
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|
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return new Property($name, $value, $specificity); |
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} |
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|
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/** |
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* Converts an array of property-strings into objects |
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* |
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* @param string[] $properties |
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* |
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* @return Property[] |
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*/ |
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public function convertArrayToObjects(array $properties, ?Specificity $specificity = null) |
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{ |
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$objects = array(); |
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|
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foreach ($properties as $property) { |
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$object = $this->convertToObject($property, $specificity); |
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if ($object === null) { |
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continue; |
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} |
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|
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$objects[] = $object; |
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} |
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|
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return $objects; |
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} |
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|
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/** |
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* Build the property-string for multiple properties |
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* |
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* @param Property[] $properties |
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* |
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* @return string |
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*/ |
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public function buildPropertiesString(array $properties) |
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{ |
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$chunks = array(); |
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|
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foreach ($properties as $property) { |
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$chunks[] = $property->toString(); |
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} |
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|
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return implode(' ', $chunks); |
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} |
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} |
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|
