Fix List index out of range in case of no match in a regex group

Fixes #528
invoice-x · Nov 4, 2023 · d505e4c · d505e4c
1 parent ba6aedf
commit d505e4c
Showing 1 changed file with 16 additions and 15 deletions.
diff --git a/src/invoice2data/extract/parsers/regex.py b/src/invoice2data/extract/parsers/regex.py
@@ -52,21 +52,22 @@ def parse(template, field, settings, content, legacy=False):
 
     if "group" in settings:
         result = list(filter(None, result))
-        if settings["group"] == "sum":
-            result = sum(result)
-        elif settings["group"] == "min":
-            result = min(result)
-        elif settings["group"] == "max":
-            result = max(result)
-        elif settings["group"] == "first":
-            result = result[0]
-        elif settings["group"] == "last":
-            result = result[-1]
-        elif settings["group"] == "join":
-            result = " ".join(str(v) for v in result)
-        else:
-            logger.warning("Unsupported grouping method: %s", settings["group"])
-            return None
+        if result:
+            if settings["group"] == "sum":
+                result = sum(result)
+            elif settings["group"] == "min":
+                result = min(result)
+            elif settings["group"] == "max":
+                result = max(result)
+            elif settings["group"] == "first":
+                result = result[0]
+            elif settings["group"] == "last":
+                result = result[-1]
+            elif settings["group"] == "join":
+                result = " ".join(str(v) for v in result)
+            else:
+                logger.warning("Unsupported grouping method: %s", settings["group"])
+                return None
     else:
 
         # Remove duplicates maintaining the order by default (it's more