'Drop test database for this project.'

@signalcommand
def handle(self, *args, **options):

    if args:
        raise CommandError('reset_db    takes    no    arguments')
    router = options.get('router')
    dbinfo = settings.DATABASES.get(router)
    if (dbinfo is None):
        raise CommandError(('Unknown    database    router    %s' % router))
    engine = dbinfo.get('ENGINE').split('.')[(-1)]
    user = password = database_name = database_host = database_port = ''
    if (engine == 'mysql'):
        (user, password, database_name, database_host, database_port) = parse_mysql_cnf(dbinfo)
    user = (options.get('user') or dbinfo.get('USER') or user)
    password = (options.get('password') or dbinfo.get('PASSWORD') or password)
    try:
        database_name = dbinfo['TEST']['NAME']
    except KeyError:
        database_name = None
    if (database_name is None):
        database_name = (TEST_DATABASE_PREFIX + (options.get('dbname') or dbinfo.get('NAME')))
    if ((database_name is None) or (database_name == '')):
        raise CommandError('You    need    to    specify    DATABASE_NAME    in    your    Django    settings    file.')
    database_host = (dbinfo.get('HOST') or database_host)
    database_port = (dbinfo.get('PORT') or database_port)
    verbosity = int(options.get('verbosity', 1))
    if options.get('interactive'):
        confirm = input(('\nYou    have    requested    to    drop    the    test    database.\nThis    will    IRREVERSIBLY    DESTROY\nALL    data    in    the    database    "%s".\nAre    you    sure    you    want    to    do    this?\n\nType    \'yes\'    to    continue,    or    \'no\'    to    cancel:    ' % (database_name,)))
    else:
        confirm = 'yes'
    if (confirm != 'yes'):
        print 'Reset    cancelled.'
        return
    if (engine in ('sqlite3', 'spatialite')):
        import os
        try:
            logging.info(('Unlinking    %s    database' % engine))
            if os.path.isfile(database_name):
                os.unlink(database_name)
        except OSError:
            pass
    elif (engine in ('mysql',)):
        import MySQLdb as Database
        kwargs = {'user': user, 'passwd': password}
        if database_host.startswith('/'):
            kwargs['unix_socket'] = database_host
        else:
            kwargs['host'] = database_host
        if database_port:
            kwargs['port'] = int(database_port)
        connection = Database.connect(**kwargs)
        drop_query = ('DROP    DATABASE    IF    EXISTS    `%s`' % database_name)
        logging.info((('Executing:    "' + drop_query) + '"'))
        connection.query(drop_query)
    elif (engine in ('postgresql', 'postgresql_psycopg2', 'postgis')):
        import psycopg2 as Database
        conn_params = {'database': 'template1'}
        if user:
            conn_params['user'] = user
        if password:
            conn_params['password'] = password
        if database_host:
            conn_params['host'] = database_host
        if database_port:
            conn_params['port'] = database_port
        connection = Database.connect(**conn_params)
        connection.set_isolation_level(0)
        cursor = connection.cursor()
        drop_query = ('DROP    DATABASE    IF    EXISTS    "%s";' % database_name)
        logging.info((('Executing:    "' + drop_query) + '"'))
        try:
            cursor.execute(drop_query)
        except Database.ProgrammingError as e:
            logging.exception(('Error:    %s' % str(e)))
    else:
        raise CommandError(('Unknown    database    engine    %s' % engine))
    if ((verbosity >= 2) or options.get('interactive')):
        print 'Reset    successful.'
