Return a parser context result.

def _parse_arguments(arguments=None):
    """Return a parser context result."""
    dir_hash = hashlib.sha1(os.getcwd().encode("utf-8")).hexdigest()

    parser = argparse.ArgumentParser(description="""Lint for Polysquare """
                                     """style guide""")
    parser.add_argument("--checks",
                        nargs=0,
                        action=ShowAvailableChecksAction,
                        help="""list available checks""")
    parser.add_argument("files",
                        nargs="*",
                        metavar=("FILE"),
                        help="""read FILE""",
                        type=str)
    parser.add_argument("--whitelist",
                        nargs="*",
                        help="""list of checks that should only be run""",
                        default=None)
    parser.add_argument("--blacklist",
                        nargs="*",
                        help="""list of checks that should never be run""",
                        default=None)
    parser.add_argument("--fix-what-you-can",
                        action="store_const",
                        help="""fix errors automatically""",
                        const=True)
    parser.add_argument("--spellcheck-cache",
                        help="""path to spell-checking cache file""",
                        default=None)
    parser.add_argument("--log-technical-terms-to",
                        help="""path to file to log technical terms to""",
                        default=None)
    parser.add_argument("--stamp-file-path",
                        help="""path to directory to store cached results""",
                        default=os.path.join(tempfile.gettempdir(),
                                             "jobstamps",
                                             "spellcheck_linter",
                                             dir_hash))
    parser.add_argument("--block-regexps",
                        help="""Regular expressions to exclude from """
                             """all checks.""",
                        nargs="*",
                        default=None)

    return parser.parse_args(arguments)