private static function parseExcludePattern($pattern)
{
if (!is_string($pattern)) {
throw new \Exception('Exclude/include pattern must be a string.');
}
$result = ['pattern' => $pattern, 'flags' => 0, 'firstWildcard' => false];
if (!isset($pattern[0])) {
return $result;
}
if ($pattern[0] == '!') {
$result['flags'] |= self::PATTERN_NEGATIVE;
$pattern = StringHelper::byteSubstr($pattern, 1, StringHelper::byteLength($pattern));
}
$len = StringHelper::byteLength($pattern);
if ($len && StringHelper::byteSubstr($pattern, -1, 1) == '/') {
$pattern = StringHelper::byteSubstr($pattern, 0, -1);
$len--;
$result['flags'] |= self::PATTERN_MUSTBEDIR;
}
if (strpos($pattern, '/') === false) {
$result['flags'] |= self::PATTERN_NODIR;
}
$result['firstWildcard'] = self::firstWildcardInPattern($pattern);
if ($pattern[0] == '*' && self::firstWildcardInPattern(StringHelper::byteSubstr($pattern, 1, StringHelper::byteLength($pattern))) === false) {
$result['flags'] |= self::PATTERN_ENDSWITH;
}
$result['pattern'] = $pattern;
return $result;
}
