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-rw-r--r--uploader/input_validation.py27
1 files changed, 27 insertions, 0 deletions
diff --git a/uploader/input_validation.py b/uploader/input_validation.py
new file mode 100644
index 0000000..9abe742
--- /dev/null
+++ b/uploader/input_validation.py
@@ -0,0 +1,27 @@
+"""Input validation utilities"""
+from typing import Any
+
+def is_empty_string(value: str) -> bool:
+ """Check whether as string is empty"""
+ return (isinstance(value, str) and value.strip() == "")
+
+def is_empty_input(value: Any) -> bool:
+ """Check whether user provided an empty value."""
+ return (value is None or is_empty_string(value))
+
+def is_integer_input(value: Any) -> bool:
+ """
+ Check whether user provided a value that can be parsed into an integer.
+ """
+ def __is_int__(val, base):
+ try:
+ int(val, base=base)
+ except ValueError:
+ return False
+ return True
+ return isinstance(value, int) or (
+ (not is_empty_input(value)) and (
+ isinstance(value, str) and (
+ __is_int__(value, 10)
+ or __is_int__(value, 8)
+ or __is_int__(value, 16))))