def has_block_license()

in scancode/scanCode.py [0:0]

• 16 lines of code
• 9 McCabe index (conditional complexity)

def has_block_license(path):
    """Open file and verify it contains a valid license header."""
    if not os.path.isfile(path):
        if VERBOSE:
            print_error(MSG_SKIPPING_FILE % path)
        return []

    with open(path) as fp:
        for license in valid_licenses:
            # Assure license string is normalized to remove indentations
            # caused by declaration (above) as a string literal.
            normalized_license = textwrap.dedent(license)
            # Search for license at start of file,
            # allowing for some "slack" length
            file_head = fp.read(len(normalized_license) +
                                license_search_slack_len)

            if file_head is None:
                return [(1, ERR_LICENSE)]
            elif normalized_license in file_head:
                return []
            # reset and try finding the next license
            fp.seek(0)
    return [(1, ERR_LICENSE)]