Store columns in the output dict

When inserting, deleting, or editing case-attributes, we need the column
headers in order to be able to know identify the attribute of interest.

* gn3/csvcmp.py (csv_diff): Add extra "Column" key in returned dict.

1 files changed, 4 insertions, 1 deletions

diff --git a/gn3/csvcmp.py b/gn3/csvcmp.py
index e033396..a525b91 100644
--- a/gn3/csvcmp.py
+++ b/gn3/csvcmp.py
@@ -59,7 +59,10 @@ def csv_diff(base_csv, delta_csv, tmp_dir="/tmp"):
                       f"'{file_name1}' '{file_name2}' "
                       "--format json"))
     if _r.get("code") == 0:
-        _r["output"] = json.loads(_r.get("output"))
+        _r = json.loads(_r.get("output"))
+        _r["Columns"] = max(_header1, _header2)
+    else:
+        _r = {}
     # Clean Up!
     if os.path.exists(file_name1):
         os.remove(file_name1)