refactor io

corrlib/cache_io.py

@@ -0,0 +1,33 @@
+from typing import Union, Optional
+import os
+import shutil
+
+
+def drop_cache_files(path: str, fs: Optional[list[str]]=None):
+    cache_dir = os.path.join(path, ".cache")
+    if fs is None:
+        fs = os.listdir(cache_dir)
+    for f in fs:
+        shutil.rmtree(os.path.join(cache_dir, f))
+
+
+def cache_dir(path, file):
+    cache_path_list = [path]
+    cache_path_list.append(".cache")
+    cache_path_list.extend(file.split("/")[1:])
+    cache_path = "/".join(cache_path_list)
+    return cache_path
+
+
+def cache_path(path, file, hash, key):
+    cache_path = os.path.join(cache_dir(path, file), hash, key)
+    return cache_path
+
+def is_in_cache(path, record, hash):
+    
+    if os.file.exists(cache_path(path, file, hash, key)):
+        return True
+    else:
+        return False
+    
+