refactor(clew): use predicate-based directory walking

src/clew/clew.py

@@ -92,22 +92,21 @@ def is_game_root(path: Path) -> bool:
     )
 
 
-def find_game_roots(extracted_root: Path) -> list[Path]:
-    game_roots = []
-    for root, directories, _files in os.walk(extracted_root):
-        path = Path(root)
-        if is_game_root(path):
-            game_roots.append(path)
-            directories[:] = []
-    return sorted(game_roots)
+def walk_directory(root: Path, predicate) -> list[Path]:
+    matches = []
+    for current, _directories, files in os.walk(root):
+        current_path = Path(current)
+        if predicate(current_path):
+            matches.append(current_path)
+        for file_name in files:
+            file_path = current_path / file_name
+            if predicate(file_path):
+                matches.append(file_path)
+    return sorted(matches)
 
 
-def find_compiled_scripts(game_root: Path) -> list[Path]:
-    scripts = []
-    game_directory = game_root / "game"
-    for suffix in ("*.rpyc", "*.rpymc"):
-        scripts.extend(game_directory.rglob(suffix))
-    return sorted(scripts)
+def is_compiled_script(path: Path) -> bool:
+    return path.is_file() and path.suffix.lower() in {".rpyc", ".rpymc"}
 
 
 def object_dump_output_path(output_root: Path, extracted_root: Path, game_root: Path, script: Path) -> Path:
@@ -135,13 +134,13 @@ def run_renpy_object_dump(game_root: Path, script: Path, output: Path) -> None:
 
 
 def dump_renpy_objects(output_root: Path, extracted_root: Path, overwrite: bool) -> None:
-    game_roots = find_game_roots(extracted_root)
+    game_roots = walk_directory(extracted_root, is_game_root)
     if not game_roots:
         LOG.warning("no Ren'Py game roots found under %s", extracted_root)
         return
 
     for game_root in game_roots:
-        scripts = find_compiled_scripts(game_root)
+        scripts = walk_directory(game_root / "game", is_compiled_script)
         LOG.info("found %d compiled Ren'Py scripts under %s", len(scripts), game_root)
         total = len(scripts)
         for index, script in enumerate(scripts, start=1):