/**
* Parses the import rule.
*
* @param string $ruleString
*/
protected function parseRuleString($ruleString)
{
$charset = $this->getCharset();
// Remove at-rule and unnecessary white-spaces
$ruleString = preg_replace('/^[ \\r\\n\\t\\f]*@import[ \\r\\n\\t\\f]+/i', '', $ruleString);
$ruleString = trim($ruleString, " \r\n\t\f");
// Remove trailing semicolon
$ruleString = rtrim($ruleString, ";");
$isEscaped = false;
$inFunction = false;
$url = "";
$mediaQuery = "";
$currentPart = "";
for ($i = 0, $j = mb_strlen($ruleString, $charset); $i < $j; $i++) {
$char = mb_substr($ruleString, $i, 1, $charset);
if ($char === "\\") {
if ($isEscaped === false) {
$isEscaped = true;
} else {
$isEscaped = false;
}
} else {
if ($char === " ") {
if ($isEscaped === false) {
if ($inFunction == false) {
$currentPart = trim($currentPart, " \r\n\t\f");
if ($currentPart !== "") {
if ($url === "") {
$url = trim($currentPart, " \r\n\t\f");
} else {
$mediaQuery .= trim($currentPart, " \r\n\t\f");
$mediaQuery .= $char;
}
$currentPart = "";
}
}
} else {
$currentPart .= $char;
}
} elseif ($isEscaped === false && $char === "(") {
$inFunction = true;
$currentPart .= $char;
} elseif ($isEscaped === false && $char === ")") {
$inFunction = false;
$currentPart .= $char;
} else {
$currentPart .= $char;
}
}
// Reset escaped flag
if ($isEscaped === true && $char !== "\\") {
$isEscaped = false;
}
}
if ($currentPart !== "") {
$currentPart = trim($currentPart, " \r\n\t\f");
if ($currentPart !== "") {
if ($url === "") {
$url = trim($currentPart, " \r\n\t\f");
} else {
$mediaQuery .= trim($currentPart, " \r\n\t\f");
}
}
}
// Get URL value
$url = Url::extractUrl($url);
$this->setUrl($url);
// Process media query
$mediaRule = new MediaRule($mediaQuery);
$this->setQueries($mediaRule->getQueries());
}
/**
* Parses the namespace rule.
*
* @param string $ruleString
*/
protected function parseRuleString($ruleString)
{
if (is_string($ruleString)) {
$charset = $this->getCharset();
// Remove at-rule and unnecessary white-spaces
$ruleString = preg_replace('/^[ \\r\\n\\t\\f]*@namespace[ \\r\\n\\t\\f]+/i', '', $ruleString);
$ruleString = trim($ruleString, " \r\n\t\f");
// Remove trailing semicolon
$ruleString = rtrim($ruleString, ";");
$isEscaped = false;
$inFunction = false;
$parts = [];
$currentPart = "";
for ($i = 0, $j = mb_strlen($ruleString, $charset); $i < $j; $i++) {
$char = mb_substr($ruleString, $i, 1, $charset);
if ($char === "\\") {
if ($isEscaped === false) {
$isEscaped = true;
} else {
$isEscaped = false;
}
} else {
if ($char === " ") {
if ($isEscaped === false) {
if ($inFunction == false) {
$currentPart = trim($currentPart, " \r\n\t\f");
if ($currentPart !== "") {
$parts[] = trim($currentPart, " \r\n\t\f");
$currentPart = "";
}
}
} else {
$currentPart .= $char;
}
} elseif ($isEscaped === false && $char === "(") {
$inFunction = true;
$currentPart .= $char;
} elseif ($isEscaped === false && $char === ")") {
$inFunction = false;
$currentPart .= $char;
} else {
$currentPart .= $char;
}
}
// Reset escaped flag
if ($isEscaped === true && $char !== "\\") {
$isEscaped = false;
}
}
if ($currentPart !== "") {
$currentPart = trim($currentPart, " \r\n\t\f");
if ($currentPart !== "") {
$parts[] = trim($currentPart, " \r\n\t\f");
}
}
foreach ($parts as $key => $value) {
$parts[$key] = Placeholder::replaceStringPlaceholders($value);
}
$countParts = count($parts);
if ($countParts === 2) {
$this->setPrefix($parts[0]);
// Get URL value
$name = Url::extractUrl($parts[1]);
$this->setName($name);
} elseif ($countParts === 1) {
// Get URL value
$name = Url::extractUrl($parts[0]);
$this->setName($name);
} else {
// ERROR
}
} else {
throw new \InvalidArgumentException("Invalid type '" . gettype($ruleString) . "' for argument 'ruleString' given.");
}
}