Function ProcessFile

tools/cpplint.py:7706–7758

Does google-lint on a single file. Args: filename: The name of the file to parse. vlevel: The level of errors to report. Every error of confidence >= verbose_level will be reported. 0 is a good default. extra_check_functions: An array of additional check functions th

(filename, vlevel, extra_check_functions=None)

def ProcessFile(filename, vlevel, extra_check_functions=None):
    """Does google-lint on a single file.

    Args:
      filename: The name of the file to parse.

      vlevel: The level of errors to report.  Every error of confidence
      >= verbose_level will be reported.  0 is a good default.

      extra_check_functions: An array of additional check functions that will be
                             run on each source line. Each function takes 4
                             arguments: filename, clean_lines, line, error
    """

    _SetVerboseLevel(vlevel)
    _BackupFilters()
    old_errors = _cpplint_state.error_count

    if not ProcessConfigOverrides(filename):
        _RestoreFilters()
        return

    try:
        # Support the UNIX convention of using "-" for stdin.
        if filename == "-":
            lines = sys.stdin.read().split("\n")
        else:
            with open(filename, encoding="utf8", errors="replace", newline=None) as target_file:
                lines = target_file.read().split("\n")

    except OSError:
        # TODO(aaronliu0130): Maybe make this have an exit code of 2 after all is done
        _cpplint_state.PrintError(f"Skipping input '{filename}': Can't open for reading\n")
        _RestoreFilters()
        return

    # Note, if no dot is found, this will give the entire filename as the ext.
    file_extension = filename[filename.rfind(".") + 1 :]

    # When reading from stdin, the extension is unknown, so no cpplint tests
    # should rely on the extension.
    if filename != "-" and file_extension not in GetAllExtensions():
        _cpplint_state.PrintError(
            f"Ignoring {filename}; not a valid file name ({(', '.join(GetAllExtensions()))})\n"
        )
    else:
        ProcessFileData(filename, file_extension, lines, Error, extra_check_functions)

    # Suppress printing anything if --quiet was passed unless the error
    # count has increased after processing this file.
    if not _cpplint_state.quiet or old_errors != _cpplint_state.error_count:
        _cpplint_state.PrintInfo(f"Done processing {filename}\n")
    _RestoreFilters()


def PrintUsage(message):