fix: fold filtering to support multiple search terms

Author: rabii-chaarani

map2loop/mapdata.py

@@ -1140,9 +1140,16 @@ def parse_fold_map(self) -> tuple:
             folds[config["structtype_column"]] = self.raw_data[Datatype.FOLD][
                 config["structtype_column"]
             ]
-            folds = folds[
-                folds[config["structtype_column"]].astype(str).str.contains(config["fold_text"])
-            ]
+            if ',' in config["fold_text"]:
+                import re
+                fold_text = config["fold_text"].split(',')
+                search_terms = [term.strip().strip("'").strip('"') for term in fold_text]
+                escaped_terms = [re.escape(term) for term in search_terms]
+                # Combine the escaped terms using the pipe '|' symbol for alternation
+                fold_text_pattern = '|'.join(escaped_terms)
+                folds = folds[
+                    folds[config["structtype_column"]].astype(str).str.contains(fold_text_pattern,  case=False, regex=True, na=False)
+                ]
             if self.verbose_level > VerboseLevel.NONE:
                 if len(folds) < len(self.raw_data[Datatype.GEOLOGY]) and len(folds) == 0:
                     msg = f"Fold map reduced to 0 folds as structtype_column ({config['structtype_column']}) does not contains any row with fold_text \"{config['fold_text']}\""