/**
* Parses the css code converting to a Css object with all selectors, properties and values.
*
* @param string $string_code The css code to parse
*
* @return Stylecow\Css The parsed css code
*/
private static function parse($string_code)
{
$Css = new Css();
while ($string_code) {
$pos = strpos($string_code, '{');
$pos2 = strpos($string_code, ';');
if ($pos2 !== false && $pos2 < $pos) {
$Css->addChild(new Css(Selector::createFromString(substr($string_code, 0, $pos2))));
$string_code = trim(substr($string_code, $pos2 + 1));
continue;
}
if ($pos === false) {
break;
}
$selector = substr($string_code, 0, $pos);
$string_code = trim(substr($string_code, $pos + 1));
$length = strlen($string_code);
$in = 1;
for ($n = 0; $n <= $length; $n++) {
$letter = $string_code[$n];
if ($letter === '{') {
$in++;
continue;
}
if ($letter !== '}' || --$in) {
continue;
}
$Child = $Css->addChild(new Css(Selector::createFromString($selector)));
$string_piece = $n === 0 ? '' : trim(substr($string_code, 0, $n - 1));
$string_code = trim(substr($string_code, $n + 1));
$pos = strpos($string_piece, '{');
if ($pos === false) {
$properties_string = $string_piece;
$content_string = '';
} else {
$pos = strrpos(substr($string_piece, 0, $pos), ';');
if ($pos !== false) {
$properties_string = trim(substr($string_piece, 0, $pos + 1));
$content_string = trim(substr($string_piece, $pos + 1));
} else {
$properties_string = '';
$content_string = $string_piece;
}
}
if ($properties_string) {
foreach (self::explodeTrim(';', $properties_string) as $property) {
$Child->addProperty(Property::createFromString($property));
}
}
if ($content_string) {
foreach (self::parse($content_string) as $child) {
$Child->addChild($child);
}
}
break;
}
}
return $Css;
}
/**
* Parses the css code converting to a Css object with all selectors, properties and values.
*
* @param string $string_code The css code to parse
* @param string $filename The original filename (used to import relative files)
*
* @return Stylecow\Css The parsed css code
*/
private static function parse($string_code, $filename = null, $contextFile = null)
{
if ($filename) {
$relativePath = $contextFile ? substr($filename, strlen($contextFile)) : pathinfo($filename, PATHINFO_BASENAME);
} else {
$relativePath = '';
}
$Css = $Child = new Css();
$status = array('selector');
$buffer = '';
$code = explode("\n", str_replace("\n\r", "\n", $string_code));
array_unshift($code, '');
foreach ($code as $line => $string_line) {
if (empty($string_line)) {
continue;
}
$col = 0;
$length = strlen($string_line);
$char = $previousChar = null;
$nextChar = $string_line[$col];
while ($col < $length) {
$previousChar = $char;
$char = $nextChar;
$col++;
$nextChar = $col === $length ? null : $string_line[$col];
switch ($char) {
case '"':
switch ($status[0]) {
case 'doubleQuote':
$buffer .= $char;
if ($previousChar !== '\\') {
array_shift($status);
}
break;
case 'simpleQuote':
$buffer .= $char;
break;
case 'selector':
case 'properties':
$buffer .= $char;
array_unshift($status, 'doubleQuote');
}
break;
case "'":
switch ($status[0]) {
case 'simpleQuote':
$buffer .= $char;
if ($previousChar !== '\\') {
array_shift($status);
}
break;
case 'doubleQuote':
$buffer .= $char;
break;
case 'selector':
case 'properties':
$buffer .= $char;
array_unshift($status, 'simpleQuote');
}
break;
case '{':
switch ($status[0]) {
case 'selector':
case 'properties':
$Child = $Child->addChild(new Css(Selector::createFromString($buffer)))->setSourceMap($line, $col, $relativePath);
array_unshift($status, 'properties');
$buffer = '';
break;
}
break;
case '}':
switch ($status[0]) {
case 'properties':
if (trim($buffer)) {
$Child->addProperty(Property::createFromString($buffer))->setSourceMap($line, $col, $relativePath);
}
$buffer = '';
array_shift($status);
$Child = $Child->parent;
break;
}
break;
case ';':
switch ($status[0]) {
case 'selector':
if (strpos($buffer, '@import') === false || !is_object($Children = self::parseImport($buffer, $filename, $contextFile))) {
$Child->addChild(new Css(Selector::createFromString($buffer)))->setSourceMap($line, $col, $relativePath);
} else {
foreach ($Children->getChildren() as $Each) {
$Child->addChild($Each);
}
}
$buffer = '';
break;
case 'properties':
if (!empty($buffer)) {
$Child->addProperty(Property::createFromString($buffer))->setSourceMap($line, $col, $relativePath);
}
$buffer = '';
break;
}
break;
case '/':
if ($status[0] !== 'comment') {
if ($nextChar === '*') {
array_unshift($status, 'comment');
$col++;
$nextNextChar = $col === $length ? null : $string_line[$col];
if ($nextNextChar === '/') {
$col++;
}
} else {
$buffer .= $char;
}
} else {
if ($previousChar === '*') {
array_shift($status);
}
}
break;
default:
if (!isset($status[0])) {
$status = array('selector');
}
if ($status[0] !== 'comment') {
$buffer .= $char;
}
}
}
}
return $Css;
}