Add duration parsing

tests/test_utils.py

@@ -1,3 +1,7 @@
+from argparse import ArgumentTypeError
+import pytest
+
+from toot.console import duration
 from toot.wcstring import wc_wrap, trunc, pad, fit_text
 
 
@@ -155,3 +159,45 @@ def test_wc_wrap_indented():
         "dolores. Illo reiciendis nulla ea. Facilis nostrum",
         "non qui inventore sit.",
     ]
+
+
+def test_duration():
+    # Long hand
+    assert duration("1 second") == 1
+    assert duration("1 seconds") == 1
+    assert duration("100 second") == 100
+    assert duration("100 seconds") == 100
+    assert duration("5 minutes") == 5 * 60
+    assert duration("5 minutes 10 seconds") == 5 * 60 + 10
+    assert duration("1 hour 5 minutes") == 3600 + 5 * 60
+    assert duration("1 hour 5 minutes 1 second") == 3600 + 5 * 60 + 1
+    assert duration("5 days") == 5 * 86400
+    assert duration("5 days 3 minutes") == 5 * 86400 + 3 * 60
+    assert duration("5 days 10 hours 3 minutes 1 second") == 5 * 86400 + 10 * 3600 + 3 * 60 + 1
+
+    # Short hand
+    assert duration("1s") == 1
+    assert duration("100s") == 100
+    assert duration("5m") == 5 * 60
+    assert duration("5m10s") == 5 * 60 + 10
+    assert duration("5m 10s") == 5 * 60 + 10
+    assert duration("1h5m1s") == 3600 + 5 * 60 + 1
+    assert duration("1h 5m 1s") == 3600 + 5 * 60 + 1
+    assert duration("5d") == 5 * 86400
+    assert duration("5d3m") == 5 * 86400 + 3 * 60
+    assert duration("5d 3m") == 5 * 86400 + 3 * 60
+    assert duration("5d 10h 3m 1s") == 5 * 86400 + 10 * 3600 + 3 * 60 + 1
+    assert duration("5d10h3m1s") == 5 * 86400 + 10 * 3600 + 3 * 60 + 1
+
+    with pytest.raises(ArgumentTypeError):
+        duration("")
+
+    with pytest.raises(ArgumentTypeError):
+        duration("100")
+
+    # Wrong order
+    with pytest.raises(ArgumentTypeError):
+        duration("1m1d")
+
+    with pytest.raises(ArgumentTypeError):
+        duration("banana")

toot/console.py

@@ -2,6 +2,7 @@
 
 import logging
 import os
+import re
 import shutil
 import sys
 
@@ -40,6 +41,42 @@ def timeline_count(value):
     return n
 
 
+DURATION_UNITS = {
+    "m": 60,
+    "h": 60 * 60,
+    "d": 60 * 60 * 24,
+}
+
+
+def duration(value: str):
+    match = re.match(r"""^
+        (([0-9]+)\s*(days|day|d))?\s*
+        (([0-9]+)\s*(hours|hour|h))?\s*
+        (([0-9]+)\s*(minutes|minute|m))?\s*
+        (([0-9]+)\s*(seconds|second|s))?\s*
+    $""", value, re.X)
+
+    if not match:
+        raise ArgumentTypeError(f"Invalid duration: {value}")
+
+    days = match.group(2)
+    hours = match.group(5)
+    minutes = match.group(8)
+    seconds = match.group(11)
+
+    days = int(match.group(2) or 0) * 60 * 60 * 24
+    hours = int(match.group(5) or 0) * 60 * 60
+    minutes = int(match.group(8) or 0) * 60
+    seconds = int(match.group(11) or 0)
+
+    duration = days + hours + minutes + seconds
+
+    if duration == 0:
+        raise ArgumentTypeError("Empty duration")
+
+    return duration
+
+
 def editor(value):
     if not value:
         raise ArgumentTypeError(