fixup #89 to get latest version

cpp_linter_hooks/util.py

@@ -113,15 +113,26 @@ def get_version_from_dependency(tool: str) -> Optional[str]:
 
 
 def _resolve_version(versions: List[str], user_input: Optional[str]) -> Optional[str]:
-    """Resolve the version based on user input and available versions."""
+    """Resolve the latest matching version based on user input and available versions."""
     if user_input is None:
         return None
     if user_input in versions:
         return user_input
+
     try:
-        # Check if the user input is a valid version
-        return next(v for v in versions if v.startswith(user_input) or v == user_input)
-    except StopIteration:
+        # filter versions that start with the user input
+        matched_versions = [v for v in versions if v.startswith(user_input)]
+        if not matched_versions:
+            raise ValueError
+
+        # define a function to parse version strings into tuples for comparison
+        def parse_version(v: str):
+            return tuple(map(int, v.split(".")))
+
+        # return the latest version
+        return max(matched_versions, key=parse_version)
+
+    except ValueError:
         LOG.warning("Version %s not found in available versions", user_input)
         return None
 

testing/run.sh

@@ -29,7 +29,7 @@ failed_cases=`grep -c "Failed" result.txt`
 
 echo $failed_cases " cases failed."
 
-if [ $failed_cases -eq 10 ]; then
+if [ $failed_cases -eq 9 ]; then
     echo "=============================="
     echo "Test cpp-linter-hooks success."
     echo "=============================="

tests/test_util.py

@@ -161,11 +161,11 @@ def test_get_version_from_dependency_malformed_toml():
     "user_input,expected",
     [
         (None, None),
-        ("20", "20.1.0"),  # Should find first 20.x
-        ("20.1", "20.1.0"),  # Should find first 20.1.x
+        ("20", "20.1.7"),  # Should find latest 20.x
+        ("20.1", "20.1.7"),  # Should find latest 20.1.x
         ("20.1.7", "20.1.7"),  # Exact match
-        ("18", "18.1.0"),  # Should find first 18.x
-        ("18.1", "18.1.0"),  # Should find first 18.1.x
+        ("18", "18.1.8"),  # Should find latest 18.x
+        ("18.1", "18.1.8"),  # Should find latest 18.1.x
         ("99", None),  # Non-existent major version
         ("20.99", None),  # Non-existent minor version
         ("invalid", None),  # Invalid version string
@@ -182,9 +182,9 @@ def test_resolve_version_clang_format(user_input, expected):
     "user_input,expected",
     [
         (None, None),
-        ("20", "20.1.0"),  # Should find first 20.x
-        ("18", "18.1.1"),  # Should find first 18.x
-        ("19", "19.1.0"),  # Should find first 19.x
+        ("20", "20.1.0"),  # Should find latest 20.x
+        ("18", "18.1.8"),  # Should find latest 18.x
+        ("19", "19.1.0.1"),  # Should find latest 19.x
         ("99", None),  # Non-existent major version
     ],
 )