From 73eb490537782f7a1b2159d4ebc9d7570d5d8ed0 Mon Sep 17 00:00:00 2001
From: John Lancaster <32917998+jsl12@users.noreply.github.com>
Date: Sat, 29 Aug 2026 19:13:20 -0500
Subject: [PATCH] utils.read_file

---
 src/personal_mcp/utils.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/personal_mcp/utils.py

diff --git a/src/personal_mcp/utils.py b/src/personal_mcp/utils.py
new file mode 100644
index 0000000..0399ec1
--- /dev/null
+++ b/src/personal_mcp/utils.py
@@ -0,0 +1,20 @@
+import logging
+from pathlib import Path
+
+logger = logging.getLogger(__name__)
+
+_FILE_CACHE: dict[Path, tuple[int, str]] = {}
+
+
+def read_file(path: Path) -> str:
+    new_ts = path.stat().st_mtime_ns
+    match _FILE_CACHE.get(path):
+        case (int(timestamp), str(content)) if timestamp == new_ts:
+            return content
+        case _:
+            with path.open("r", encoding="utf-8") as f:
+                logger.info("Loading file %s", path)
+                content = f.read()
+
+            _FILE_CACHE[path] = (new_ts, content)
+            return content