1 files changed, 13 insertions, 0 deletions
diff --git a/mdbp/common.py b/mdbp/common.py
index d0d2f2d..77cbd33 100644
--- a/mdbp/common.py
+++ b/mdbp/common.py
@@ -37,6 +37,19 @@ def buildjson(filename: str) -> JsonObject:
             buildobj,
             json_load(
                 importlib.resources.open_text("mdbp", "build_schema.json")))
+    for attrs in (("input", "dscpath"), ("output", "directory")):
+        obj = buildobj
+        for attr in attrs[:-1]:
+            try:
+                obj = obj[attr]
+            except KeyError:
+                break
+        else:
+            try:
+                obj[attrs[-1]] = str(pathlib.Path(filename).parent /
+                                     pathlib.Path(obj[attrs[-1]]))
+            except KeyError:
+                pass
     assert isinstance(buildobj, dict)
     return buildobj