From f53768612b1e2268697b5444e502032ef9f3fb3c Mon Sep 17 00:00:00 2001
From: Nate Sesti <sestinj@gmail.com>
Date: Tue, 23 May 2023 23:45:12 -0400
Subject: copying from old repo

---
 extension/examples/filesystem/filesystem.py | 45 +++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 extension/examples/filesystem/filesystem.py

(limited to 'extension/examples/filesystem/filesystem.py')

diff --git a/extension/examples/filesystem/filesystem.py b/extension/examples/filesystem/filesystem.py
new file mode 100644
index 00000000..eb5c2043
--- /dev/null
+++ b/extension/examples/filesystem/filesystem.py
@@ -0,0 +1,45 @@
+from abc import ABC, abstractmethod
+from typing import List
+
+
+class FileSystem(ABC):
+    """An abstract filesystem that can read/write from a set of files."""
+    @abstractmethod
+    def read(self, path) -> str:
+        raise NotImplementedError
+
+    @abstractmethod
+    def readlines(self, path) -> List[str]:
+        raise NotImplementedError
+
+    @abstractmethod
+    def write(self, path, content):
+        raise NotImplementedError
+
+    @abstractmethod
+    def exists(self, path) -> bool:
+        raise NotImplementedError
+
+    @abstractmethod
+    def rename_file(self, filepath: str, new_filepath: str):
+        raise NotImplementedError
+
+    @abstractmethod
+    def walk(self, path: str) -> List[str]:
+        raise NotImplementedError
+
+    @abstractmethod
+    def rename_directory(self, path: str, new_path: str):
+        raise NotImplementedError
+
+    @abstractmethod
+    def delete_file(self, filepath: str):
+        raise NotImplementedError
+
+    @abstractmethod
+    def delete_directory(self, path: str):
+        raise NotImplementedError
+
+    @abstractmethod
+    def add_directory(self, path: str):
+        raise NotImplementedError
-- 
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