main: Make --around mutually exclusive with either --after or --before

Using --around does not make much sense if there is also a match on
--after or --before, since the range in --around would most certainly
take precedence. Disallow this behaviour.

1 files changed, 6 insertions, 2 deletions

diff --git a/quarg/main.py b/quarg/main.py
index cbd5177..3927723 100644
--- a/quarg/main.py
+++ b/quarg/main.py
@@ -13,8 +13,6 @@ from quarg.database.tables import Backlog, Buffer, Network, QuasselUser, Sender
 from quarg.quassel.formatter import format_from
 from quarg.utils import errx
 
-# TODO Make --after/--before and --around mutually exclusive
-
 # pylint: disable=line-too-long
 cli = argparse.ArgumentParser()
 cli.add_argument('query', nargs='*', help='match messages containing this query')
@@ -51,6 +49,11 @@ def get_config():
 
     return config
 
+def check_args(args):
+    if args.around is not None:
+        if args.before is not None or args.after is not None:
+            errx('--around cannot be used with --after or --before')
+
 def collect_predicates(args):
     funs = {
         'query':   filters.msg_like if args.expr else filters.msg_contains,
@@ -110,6 +113,7 @@ def main():
         errx('No database URL set in config file.')
 
     args = cli.parse_args()
+    check_args(args)
 
     engine = create_engine(config.get('Database', 'url'), echo=args.debug)
     session = Session(bind=engine)