Odysseus v1.0

src/app_helpers.py

@@ -0,0 +1,30 @@
+# src/app_helpers.py
+import os
+import base64
+
+def read_if_exists(path: str) -> str:
+    """Read file if it exists, return empty string otherwise."""
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            return f.read().strip()
+    except Exception:
+        return ""
+
+def file_to_data_url(path: str, mime: str) -> str:
+    """Convert file to data URL."""
+    with open(path, "rb") as f:
+        b64 = base64.b64encode(f.read()).decode("ascii")
+    return f"data:{mime};base64,{b64}"
+
+def abs_join(base_dir: str, rel: str) -> str:
+    """Join paths and return absolute path."""
+    return os.path.abspath(os.path.join(base_dir, rel))
+
+def inside_base_dir(base_dir: str, path: str) -> bool:
+    """Check if path is inside base directory."""
+    base = os.path.realpath(base_dir)
+    p = os.path.realpath(path)
+    try:
+        return os.path.commonpath([base, p]) == base
+    except Exception:
+        return False