actions: Allow specifying a unit suffix for --around

Up until now it was only possible to give --around a range specified in
hours. Since most discussions on IRC tend not to last for multiple
hours, and one may only be interested in a few minutes of logs, this
commit adds the ability to specify a unit suffix that takes either 'm'
for minutes or 'h' for hours. If it is missing, 'h' is assumed.

2 files changed, 16 insertions, 4 deletions

diff --git a/quarg/actions.py b/quarg/actions.py
index 990327e..9361ac2 100644
--- a/quarg/actions.py
+++ b/quarg/actions.py
@@ -1,4 +1,5 @@
 import argparse
+import re
 from abc import ABCMeta, abstractmethod
 
 import dateutil.relativedelta
@@ -49,14 +50,25 @@ class ParseAround(argparse.Action):
             if not rangespec:
                 errx('Missing range for --around')
 
+            match = re.match(r'^(?P<range>\d+)(?P<unit>[hm])?$', rangespec)
+
+            if not match:
+                errx(f'Invalid range for --around: \'{rangespec}\'')
+
+            unit = match.group('unit')
+
             try:
-                hour_range = int(rangespec)
+                time_range = int(match.group('range'))
             except ValueError as err:
                 errx(f'Error when parsing range for --around: {err}')
         else:
-            datespec, hour_range = (aroundspec, 12)
+            datespec, time_range, unit = (aroundspec, 12, 'h')
 
         date = parse_isodate(datespec)
 
-        offset = dateutil.relativedelta.relativedelta(hours=hour_range)
+        if unit == 'm':
+            offset = dateutil.relativedelta.relativedelta(minutes=time_range)
+        else:
+            offset = dateutil.relativedelta.relativedelta(hours=time_range)
+
         setattr(namespace, self.dest, (date - offset, date + offset))
diff --git a/quarg/main.py b/quarg/main.py
index 083166c..82474b8 100644
--- a/quarg/main.py
+++ b/quarg/main.py
@@ -30,7 +30,7 @@ matchers.add_argument('-f', action=actions.ParseMessageFlag, dest='msgflag', hel
 date_matchers = cli.add_argument_group('matching message timestamps')
 date_matchers.add_argument('--after', action=actions.ParseDate, metavar='DATE', help='sent after this date')
 date_matchers.add_argument('--before', action=actions.ParseDate, metavar='DATE', help='sent before this date')
-date_matchers.add_argument('--around', action=actions.ParseAround, metavar='DATE[/RANGE]', help='sent RANGE hours before or after this date')
+date_matchers.add_argument('--around', action=actions.ParseAround, metavar='DATE[/RANGE]', help='sent RANGE hours/minutes before or after this date')
 
 joined_group = matchers.add_mutually_exclusive_group()
 joined_group.add_argument('--joined', default=None, action='store_true', dest='joined', help='match buffers which are currently joined')