args: audio length can be human-friendly

--min-len and --max-len accept argument like 15m for 15 minutes or 2h
for two hours.

The old "number of seconds" (ie: 3600 for 1 hour) is still supported
and not deprecated.

feed

@@ -24,11 +24,23 @@ import requests
 from pytimeparse.timeparse import timeparse
 
 
+def DurationType(arg):
+    if arg.isdecimal():
+        secs = int(arg)
+    else:
+        secs = timeparse(arg)
+        if secs is None:
+            raise ArgumentTypeError('%r is not a valid duration' % arg)
+    return secs
+
 def TimeDeltaType(arg):
-    secs = timeparse(arg)
-    if secs is None:
-        raise ArgumentTypeError('%r is not a valid time range' % arg)
-    return datetime.timedelta(seconds=timeparse(arg))
+    if arg.isdecimal():
+        secs = int(arg)
+    else:
+        secs = timeparse(arg)
+        if secs is None:
+            raise ArgumentTypeError('%r is not a valid time range' % arg)
+    return datetime.timedelta(seconds=secs)
 
 
 def weighted_choice(values, weights):
@@ -229,14 +241,14 @@ def get_parser():
 
     filters = p.add_argument_group('filters', 'Select only items that match '
                                    'these conditions')
-    filters.add_argument('--max-len', default=0, type=int,
+    filters.add_argument('--max-len', default=0, type=DurationType,
                          help='Exclude any audio that is longer '
                          'than MAX_LEN seconds')
     filters.add_argument('--sort-by', default='no', type=str,
                          choices=('random', 'date'))
     filters.add_argument('--reverse', default=False,
                          action='store_true', help='Reverse list order')
-    filters.add_argument('--min-len', default=0, type=int,
+    filters.add_argument('--min-len', default=0, type=DurationType,
                          help='Exclude any audio that is shorter '
                          'than MIN_LEN seconds')