updates

Backend/venv/lib/python3.12/site-packages/py_serializable/formatters.py

@@ -0,0 +1,97 @@
+# This file is part of py-serializable
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) Paul Horton. All Rights Reserved.
+
+from abc import ABC, abstractmethod
+from re import compile as re_compile
+from typing import Type
+
+
+class BaseNameFormatter(ABC):
+
+    @classmethod
+    @abstractmethod
+    def encode(cls, property_name: str) -> str:
+        pass
+
+    @classmethod
+    @abstractmethod
+    def decode(cls, property_name: str) -> str:
+        pass
+
+    @classmethod
+    def decode_as_class_name(cls, name: str) -> str:
+        name = CamelCasePropertyNameFormatter.encode(cls.decode(property_name=name))
+        return name[:1].upper() + name[1:]
+
+    @classmethod
+    def decode_handle_python_builtins_and_keywords(cls, name: str) -> str:
+        return name
+
+    @classmethod
+    def encode_handle_python_builtins_and_keywords(cls, name: str) -> str:
+        return name
+
+
+class CamelCasePropertyNameFormatter(BaseNameFormatter):
+    _ENCODE_PATTERN = re_compile(r'_([a-z])')
+    _DECODE_PATTERN = re_compile(r'(?<!^)(?=[A-Z])')
+
+    @classmethod
+    def encode(cls, property_name: str) -> str:
+        property_name = property_name[:1].lower() + property_name[1:]
+        return cls.encode_handle_python_builtins_and_keywords(
+            CamelCasePropertyNameFormatter._ENCODE_PATTERN.sub(lambda x: x.group(1).upper(), property_name)
+        )
+
+    @classmethod
+    def decode(cls, property_name: str) -> str:
+        return cls.decode_handle_python_builtins_and_keywords(
+            CamelCasePropertyNameFormatter._DECODE_PATTERN.sub('_', property_name).lower()
+        )
+
+
+class KebabCasePropertyNameFormatter(BaseNameFormatter):
+    _ENCODE_PATTERN = re_compile(r'(_)')
+
+    @classmethod
+    def encode(cls, property_name: str) -> str:
+        property_name = cls.encode_handle_python_builtins_and_keywords(name=property_name)
+        property_name = property_name[:1].lower() + property_name[1:]
+        return KebabCasePropertyNameFormatter._ENCODE_PATTERN.sub(lambda x: '-', property_name)
+
+    @classmethod
+    def decode(cls, property_name: str) -> str:
+        return cls.decode_handle_python_builtins_and_keywords(property_name.replace('-', '_'))
+
+
+class SnakeCasePropertyNameFormatter(BaseNameFormatter):
+    _ENCODE_PATTERN = re_compile(r'(.)([A-Z][a-z]+)')
+
+    @classmethod
+    def encode(cls, property_name: str) -> str:
+        property_name = property_name[:1].lower() + property_name[1:]
+        return cls.encode_handle_python_builtins_and_keywords(
+            SnakeCasePropertyNameFormatter._ENCODE_PATTERN.sub(lambda x: x.group(1).upper(), property_name)
+        )
+
+    @classmethod
+    def decode(cls, property_name: str) -> str:
+        return cls.decode_handle_python_builtins_and_keywords(property_name)
+
+
+class CurrentFormatter:
+    formatter: Type['BaseNameFormatter'] = CamelCasePropertyNameFormatter