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import argparse
import configparser
import os
import sys
from abc import ABCMeta, abstractmethod
from timeit import default_timer as timer
import dateutil.parser
import dateutil.relativedelta
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
import quarg.database.filters as filters
from quarg.database.tables import Backlog, Buffer, Network, QuasselUser, Sender
from quarg.quassel.formatter import format_from
from quarg.quassel.types import BufferType, MessageFlag, MessageType
def errx(msg):
sys.exit(f'quarg: {msg}')
# TODO Find out what to do about passing INVALID or GROUP as BufferType
# TODO Find out what to do about passing various message flags
class ParseEnum(argparse.Action, metaclass=ABCMeta):
def __call__(self, parser, namespace, value, option_string=None):
key = value.upper()
if key not in self.enumclass.__members__:
errx(f'Not a valid {self.enumclass.describe()}: {value}')
saved = getattr(namespace, self.dest) or []
saved.append(self.enumclass[key])
setattr(namespace, self.dest, saved)
@property
@abstractmethod
def enumclass(self):
pass
class ParseMessageType(ParseEnum):
@property
def enumclass(self):
return MessageType
class ParseMessageFlag(ParseEnum):
@property
def enumclass(self):
return MessageFlag
class ParseBufferType(ParseEnum):
@property
def enumclass(self):
return BufferType
def parse_isodate(date):
try:
parsed = dateutil.parser.isoparse(date)
except ValueError as err:
errx(f'isoparse: invalid date format \'{date}\', {err}')
except OverflowError as err:
errx(f'isoparse: date overflows: \'{date}\'')
return parsed
# FIXME make sure pylint disables are actually still needed everywhere
class ParseDate(argparse.Action):
# pylint: disable=too-few-public-methods, unsupported-membership-test
def __call__(self, parser, namespace, datespec, option_string=None):
setattr(namespace, self.dest, parse_isodate(datespec))
class ParseAround(argparse.Action):
# pylint: disable=too-few-public-methods, unsupported-membership-test
def __call__(self, parser, namespace, aroundspec, option_string=None):
if '/' in aroundspec:
# FIXME / fine here?
datespec, rangespec = aroundspec.split('/', 1)
try:
hour_range = int(rangespec)
except ValueError as err:
errx(err)
else:
datespec, hour_range = (aroundspec, 12)
date = parse_isodate(datespec)
offset = dateutil.relativedelta.relativedelta(hours=hour_range)
setattr(namespace, self.dest, (date - offset, date + offset))
# TODO Make --after/--before and --around mutually exclusive
# FIXME why need default=None for --joined/--no-joined?
# pylint: disable=line-too-long
cli = argparse.ArgumentParser()
cli.add_argument('query', nargs='*', help='match messages containing this query')
cli.add_argument('-d', action='store_true', dest='debug', help='print SQL query information')
cli.add_argument('-e', action='store_true', dest='expr', help='interpret query as LIKE expression')
cli.add_argument('-b', action='append', dest='buffer', help='match messages sent to this buffer')
cli.add_argument('-B', action=ParseBufferType, dest='buftype', help='match messages sent to buffers of this type')
cli.add_argument('-n', action='append', dest='nick', help='match messages sent by this nickname')
cli.add_argument('-N', action='append', dest='network', help='match messages sent to this network')
cli.add_argument('-u', action='append', dest='user', help='match messages received by this quassel user')
cli.add_argument('-t', action=ParseMessageType, dest='msgtype', help='match messages of this message type')
cli.add_argument('-f', action=ParseMessageFlag, dest='msgflag', help='match messages with this flag')
cli.add_argument('-p', action='append', dest='prefix', help='match nicks with this prefix')
cli.add_argument('--joined', default=None, action='store_true', dest='joined', help='match messages sent to channels which are currently joined')
cli.add_argument('--no-joined', default=None, action='store_false', dest='joined', help='match messages sent to channels which are not currently joined')
cli.add_argument('--after', action=ParseDate, metavar='DATE', help='match messages sent after this date')
cli.add_argument('--before', action=ParseDate, metavar='DATE', help='match messages sent before this date')
cli.add_argument('--around', action=ParseAround, metavar='DATE', help='match messages sent within 12 hours of this date')
# pylint: enable=line-too-long
Session = sessionmaker()
def get_config():
xdg_config_home = os.path.expanduser('~/.config/')
if 'XDG_CONFIG_HOME' in os.environ:
xdg_config_home = os.environ['XDG_CONFIG_HOME']
path = os.path.join(xdg_config_home, 'quarg', 'config')
config = configparser.ConfigParser()
config.read(path)
return config
def collect_predicates(args):
funs = {
'query': filters.msg_like if args.expr else filters.msg_contains,
'buffer': filters.buffer,
'nick': filters.nick,
'after': filters.time_from,
'before': filters.time_to,
'around': filters.time_around,
'user': filters.user,
'network': filters.network,
'msgflag': filters.msgflag,
'msgtype': filters.msgtype,
'buftype': filters.buftype,
'prefix': filters.prefix,
'joined': filters.joined,
}
for key, value in vars(args).items():
# FIXME sadly the 'joined' namespace will contain a falsy value, so
# check against None or []
if key in funs and value not in [None, []]:
fun = funs[key]
if args.debug:
print(f'{key}: {value}', file=sys.stderr)
if isinstance(value, list):
yield filters.any_filter(fun, value)
else:
yield fun(value)
def run_query(session, predicates):
start = timer()
query = session.query(Backlog).join(Sender).join(Buffer).join(Network).join(QuasselUser)
for predicate in predicates:
query = query.filter(predicate)
rows = query.order_by(Backlog.time).all()
end = timer()
return (rows, end - start)
def main():
config = get_config()
if not config.has_option('Database', 'url'):
errx('No database URL set in config file.')
args = cli.parse_args()
engine = create_engine(config.get('Database', 'url'), echo=args.debug)
session = Session(bind=engine)
predicates = list(collect_predicates(args))
if not predicates:
errx('Nothing to match.')
rows, time = run_query(session, predicates)
for row in rows:
print(format_from(row))
print(f'Query returned {len(rows)} lines in {time:.4f} seconds.', file=sys.stderr)
if __name__ == "__main__":
main()
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