Check value of command-line options

codespell_lib/_codespell.py

@@ -507,6 +507,7 @@ def parse_options(
         "--interactive",
         action="store",
         type=int,
+        choices=(0, 1, 2, 3),
         default=0,
         help="set interactive mode when writing changes:\n"
         "- 0: no interactivity.\n"
@@ -520,6 +521,7 @@ def parse_options(
         "--quiet-level",
         action="store",
         type=int,
+        choices=range(0, 64),
         default=34,
         help="bitmask that allows suppressing messages:\n"
         "- 0: print all messages.\n"
@@ -1248,15 +1250,36 @@ def main(*args: str) -> int:
             )
             parser.print_help()
             return EX_USAGE
-        context_both = max(0, options.context)
+        if options.context < 0:
+            print(
+                "ERROR: --context/-C accepts positive values only",
+                file=sys.stderr,
+            )
+        context_both = options.context
         context = (context_both, context_both)
-    elif (options.before_context is not None) or (options.after_context is not None):
-        context_before = 0
-        context_after = 0
+    else:
         if options.before_context is not None:
-            context_before = max(0, options.before_context)
+            if options.before_context < 0:
+                print(
+                    "ERROR: --context-before/-B accepts only positive values",
+                    file=sys.stderr,
+                )
+                parser.print_help()
+                return EX_USAGE
+            context_before = options.before_context
+        else:
+            context_before = 0
         if options.after_context is not None:
-            context_after = max(0, options.after_context)
+            if options.after_context < 0:
+                print(
+                    "ERROR: --context-after/-A accepts only positive values",
+                    file=sys.stderr,
+                )
+                parser.print_help()
+                return EX_USAGE
+            context_after = options.after_context
+        else:
+            context_after = 0
         context = (context_before, context_after)
 
     exclude_lines: Set[str] = set()

codespell_lib/tests/test_basic.py

@@ -237,7 +237,6 @@ def test_interactivity(
     try:
         assert cs.main(fname) == 0, "empty file"
         fname.write_text("abandonned\n")
-        assert cs.main("-i", "-1", fname) == 1, "bad"
         with FakeStdin("y\n"):
             assert cs.main("-i", "3", fname) == 1
         with FakeStdin("n\n"):

pyproject.toml

@@ -169,6 +169,6 @@ max-complexity = 45
 [tool.ruff.lint.pylint]
 allow-magic-value-types = ["bytes", "int", "str",]
 max-args = 13
-max-branches = 51
-max-returns = 11
-max-statements = 119
+max-branches = 54
+max-returns = 13
+max-statements = 120