Make gpt-engineer pip installable/runnable (#60)

gpt_engineer/db.py

@@ -0,0 +1,33 @@
+from dataclasses import dataclass
+import os
+from pathlib import Path
+
+
+class DB:
+    """A simple key-value store, where keys are filenames and values are file contents."""
+
+    def __init__(self, path):
+        self.path = Path(path).absolute()
+        os.makedirs(self.path, exist_ok=True)
+
+    def __getitem__(self, key):
+        with open(self.path / key, encoding='utf-8') as f:
+            return f.read()
+
+    def __setitem__(self, key, val):
+        with open(self.path / key, 'w', encoding='utf-8') as f:
+            f.write(val)
+
+    def __contains__(self, key):
+        return (self.path / key).exists()
+
+
+@dataclass
+class DBs:
+    """A dataclass for all dbs"""
+
+    memory: DB
+    logs: DB
+    identity: DB
+    input: DB
+    workspace: DB