String _toRegExp()

in lib/src/ast.dart [229:252]

• 13 lines of code
• 3 McCabe index (conditional complexity)

  String _toRegExp() {
    // Double star shouldn't match paths with a leading "../", since these paths
    // wouldn't be listed with this glob. We only check for "../" at the
    // beginning since the paths are normalized before being checked against the
    // glob.
    var buffer = StringBuffer()..write(r'(?!^(?:\.\./|');

    // A double star at the beginning of the glob also shouldn't match absolute
    // paths, since those also wouldn't be listed. Which root patterns we look
    // for depends on the style of path we're matching.
    if (_context.style == p.Style.posix) {
      buffer.write(r'/');
    } else if (_context.style == p.Style.windows) {
      buffer.write(r'//|[A-Za-z]:/');
    } else {
      assert(_context.style == p.Style.url);
      buffer.write(r'[a-zA-Z][-+.a-zA-Z\d]*://|/');
    }

    // Use `[^]` rather than `.` so that it matches newlines as well.
    buffer.write(r'))[^]*');

    return buffer.toString();
  }