def CleanseRawStrings()

in cpplint.py [0:0]

• 29 lines of code
• 11 McCabe index (conditional complexity)

def CleanseRawStrings(raw_lines):
    """Removes C++11 raw strings from lines.

    Before:
      static const char kData[] = R"(
          multi-line string
          )";

    After:
      static const char kData[] = ""
          (replaced by blank line)
          "";

  Args:
    raw_lines: list of raw lines.

  Returns:
    list of lines with C++11 raw strings replaced by empty strings.
  """

    delimiter = None
    lines_without_raw_strings = []
    for line in raw_lines:
        if delimiter:
            # Inside a raw string, look for the end
            end = line.find(delimiter)
            if end >= 0:
                # Found the end of the string, match leading space for this
                # line and resume copying the original lines, and also insert
                # a "" on the last line.
                leading_space = Match(r'^(\s*)\S', line)
                line = leading_space.group(1) + '""' + line[end + len(delimiter):]
                delimiter = None
            else:
                # Haven't found the end yet, append a blank line.
                line = '""'

        # Look for beginning of a raw string, and replace them with
        # empty strings.  This is done in a loop to handle multiple raw
        # strings on the same line.
        while delimiter is None:
            # Look for beginning of a raw string.
            # See 2.14.15 [lex.string] for syntax.
            #
            # Once we have matched a raw string, we check the prefix of the
            # line to make sure that the line is not part of a single line
            # comment.  It's done this way because we remove raw strings
            # before removing comments as opposed to removing comments
            # before removing raw strings.  This is because there are some
            # cpplint checks that requires the comments to be preserved, but
            # we don't want to check comments that are inside raw strings.
            matched = Match(r'^(.*?)\b(?:R|u8R|uR|UR|LR)"([^\s\\()]*)\((.*)$', line)
            if (matched and
                    not Match(r'^([^\'"]|\'(\\.|[^\'])*\'|"(\\.|[^"])*")*//',
                              matched.group(1))):
                delimiter = ')' + matched.group(2) + '"'

                end = matched.group(3).find(delimiter)
                if end >= 0:
                    # Raw string ended on same line
                    line = (matched.group(1) + '""' +
                            matched.group(3)[end + len(delimiter):])
                    delimiter = None
                else:
                    # Start of a multi-line raw string
                    line = matched.group(1) + '""'
            else:
                break

        lines_without_raw_strings.append(line)

    # TODO(unknown): if delimiter is not None here, we might want to
    # emit a warning for unterminated string.
    return lines_without_raw_strings