/**
* Remove blank lines.
*
* @param string $source
* @param Isolator $isolator
* @return string
*/
protected function normalizeEndings($source, Isolator $isolator)
{
//Step #1, \n only
$source = $isolator->isolatePHP(Strings::normalizeEndings($source));
//Step #2, chunk by lines
$sourceLines = explode("\n", $source);
//Step #3, no blank lines and html comments (will keep conditional commends)
$sourceLines = array_filter($sourceLines, function ($line) {
return trim($line);
});
$source = $isolator->repairPHP(join("\n", $sourceLines));
$isolator->reset();
return $source;
}
/**
* Parses tag body for arguments, name, etc.
*
* @param string $content Tag content to be parsed (from < till >).
* @return array
*/
protected function parseToken($content)
{
$token = [self::TOKEN_NAME => '', self::TOKEN_TYPE => self::TAG_OPEN, self::TOKEN_CONTENT => '<' . ($content = $this->repairPHP($content)) . '>', self::TOKEN_ATTRIBUTES => []];
//Some parts of text just looks like tags, but their not
if (!preg_match('/^\\/?[a-z0-9_:\\/][a-z 0-9\\._\\-:\\/]*/i', $content)) {
$token[self::TOKEN_TYPE] = self::PLAIN_TEXT;
unset($token[self::TOKEN_NAME], $token[self::TOKEN_NAME]);
return $token;
}
//Local PHP isolation
$isolator = new Isolator('-argument-', '-block-', true);
//No PHP blocks
$content = $isolator->isolatePHP($content);
//Parsing arguments, due they already checked for open-close quotas we can use regular expression
$attribute = '/(?P<name>[a-z0-9_\\-\\.\\:]+)[ \\n\\t\\r]*(?:(?P<equal>=)[ \\n\\t\\r]*' . '(?P<value>[a-z0-9\\-]+|\'[^\']+\'|\\"[^\\"]+\\"|\\"\\"))?/si';
preg_match_all($attribute, $content, $attributes);
foreach ($attributes['value'] as $index => $value) {
if ($value && ($value[0] == "'" || $value[0] == '"')) {
$value = trim($value, $value[0]);
}
$name = $this->repairPHP($isolator->repairPHP($attributes['name'][$index]));
$token[self::TOKEN_ATTRIBUTES][$name] = $this->repairPHP($isolator->repairPHP($value));
if (empty($attributes['equal'][$index])) {
$token[self::TOKEN_ATTRIBUTES][$name] = null;
}
}
//Fetching name
$name = $isolator->repairPHP(current(explode(' ', $content)));
if ($name[0] == '/') {
$token[self::TOKEN_TYPE] = self::TAG_CLOSE;
unset($token[self::TOKEN_ATTRIBUTES]);
}
if ($content[strlen($content) - 1] == '/') {
$token[self::TOKEN_TYPE] = self::TAG_SHORT;
}
$token[self::TOKEN_NAME] = $name = trim($name, '/');
unset($token[self::TOKEN_ATTRIBUTES][$name]);
$token[self::TOKEN_NAME] = trim($token[self::TOKEN_NAME]);
if ($token[self::TOKEN_TYPE] == self::TAG_OPEN && in_array($token[self::TOKEN_NAME], $this->voidTags)) {
$token[self::TOKEN_TYPE] = self::TAG_VOID;
}
return $token;
}
