Added new function to set the value in a eDBfieldMap struct

This slightly changes the eDBmappingGetValue() function to reuse
some of the same look-up logic for eDBmappingSetValue()

Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>

2 files changed, 39 insertions, 5 deletions

diff --git a/database/eurephiadb_mapping.c b/database/eurephiadb_mapping.c
index 52c2909..311dbd4 100644
--- a/database/eurephiadb_mapping.c
+++ b/database/eurephiadb_mapping.c
@@ -423,15 +423,15 @@ long int eDBmappingFieldsPresent(eDBfieldMap *map) {
 
 
 /**
- * Retrieves the value of a field in a eDBfieldMap pointer chain.
+ * Looks up a given fieldMap entry to a given field
  *
  * @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.
+ * @returns the pointer to the fieldMap entry on success, otherwise NULL
  */
-const char *eDBmappingGetValue(eDBfieldMap *map, long field_id) {
+static eDBfieldMap *_eDBmappingGetFieldMapEntry(eDBfieldMap *map, long long field_id)
+{
         eDBfieldMap *ptr = NULL;
 
         if( map == NULL ) {
@@ -440,9 +440,42 @@ const char *eDBmappingGetValue(eDBfieldMap *map, long field_id) {
 
         for( ptr = map; ptr != NULL; ptr = ptr->next ) {
                 if( ptr->field_id == field_id ) {
-                        return ptr->value;
+                        return ptr;
                 }
         }
         return NULL;
 }
 
+/**
+ * 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 long field_id) {
+        eDBfieldMap *ptr = _eDBmappingGetFieldMapEntry(map, field_id);
+        return (ptr != NULL ? ptr->value : NULL);
+}
+
+
+/**
+ * Sets the value of a field in a eDBfieldMap pointer chain.
+ *
+ * @param map       eDBfieldMap with the values
+ * @param field_id  The field ID to modify
+ * @param value     String pointer to the value to use
+ *
+ * @return Returns 1 on success, otherwise 0
+ */
+int eDBmappingSetValue(eDBfieldMap *map, long long field_id, char *value) {
+        eDBfieldMap *ptr = _eDBmappingGetFieldMapEntry(map, field_id);
+        if( ptr != NULL ) {
+                ptr->value = strdup_nullsafe(value);
+                return 1;
+        }
+        return 0;
+}
+
diff --git a/database/eurephiadb_mapping.h b/database/eurephiadb_mapping.h
index b6a6410..a6db6b4 100644
--- a/database/eurephiadb_mapping.h
+++ b/database/eurephiadb_mapping.h
@@ -269,6 +269,7 @@ eDBfieldMap *eDBxmlMapping(eurephiaCTX *ctx, eDBfieldMap *dbmap, const char *tbl
 const char *eDBmkSortKeyString(eDBfieldMap *tfmap, const char *skeys_str);
 long int eDBmappingFieldsPresent(eDBfieldMap *map);
 const char *eDBmappingGetValue(eDBfieldMap *map, long long field_id);
+int eDBmappingSetValue(eDBfieldMap *map, long long field_id, char *value);
 
 #endif      // HAVE_LIBXML2
 #endif 	    // !EUREPHIADB_MAPPING_H