Added eDBmappingGetValue() to retrieve field values from a eDBfieldMap struct

2 files changed, 27 insertions, 0 deletions

diff --git a/database/eurephiadb_mapping.c b/database/eurephiadb_mapping.c
index 2541c4c..3a2513a 100644
--- a/database/eurephiadb_mapping.c
+++ b/database/eurephiadb_mapping.c
@@ -417,3 +417,29 @@ long int eDBmappingFieldsPresent(eDBfieldMap *map) {
         }
         return ret;
 }
+
+
+/**
+ * Retrieves the value of a field in a eDBfieldMap pointer chain.
+ *
+ * @param map       eDBfieldMap with the values
+ * @param field_id  The field ID to retrieve the value from
+ *
+ * @return Returns const char * to the value in the eDBfieldMap on success, or NULL if either the
+ *         value is not found or if the value is not set.
+ */
+const char *eDBmappingGetValue(eDBfieldMap *map, long field_id) {
+        eDBfieldMap *ptr = NULL;
+
+        if( map == NULL ) {
+                return NULL;
+        }
+
+        for( ptr = map; ptr != NULL; ptr = ptr->next ) {
+                if( ptr->field_id == field_id ) {
+                        return ptr->value;
+                }
+        }
+        return NULL;
+}
+
diff --git a/database/eurephiadb_mapping.h b/database/eurephiadb_mapping.h
index 932006e..262231e 100644
--- a/database/eurephiadb_mapping.h
+++ b/database/eurephiadb_mapping.h
@@ -264,6 +264,7 @@ void eDBfreeMapping(eDBfieldMap *p);
 eDBfieldMap *eDBxmlMapping(eurephiaCTX *ctx, eDBfieldMap *dbmap, const char *tblalias, xmlNode *fmap_n);
 char *eDBmkSortKeyString(eDBfieldMap *tfmap, const char *skeys_str);
 long int eDBmappingFieldsPresent(eDBfieldMap *map);
+const char *eDBmappingGetValue(eDBfieldMap *map, long field_id);
 
 #endif      // HAVE_LIBXML2
 #endif 	    // !EUREPHIADB_MAPPING_H