Split errx and parse_isodate out into utils.py

We're going to need this for an upcoming commit that moves all
argparse.Action classes to its own file.

1 files changed, 15 insertions, 0 deletions

diff --git a/quarg/utils.py b/quarg/utils.py
new file mode 100644
index 0000000..7fa270e
--- /dev/null
+++ b/quarg/utils.py
@@ -0,0 +1,15 @@
+import sys
+import dateutil.parser
+
+def errx(msg):
+    sys.exit(f'quarg: {msg}')
+
+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