Implement qof_instance_for_each_slot().

Wraps kvp_frame_for_each_slot().

src/libqof/qof/kvp_frame.cpp

@@ -1192,7 +1192,6 @@ kvp_frame_to_string(const KvpFrame *frame)
     return g_strdup(realframe->to_string().c_str());
 }
 
-static GValue *gvalue_from_kvp_value (KvpValue *);
 static KvpValue *kvp_value_from_gvalue (const GValue*);
 
 static void
@@ -1216,8 +1215,8 @@ kvp_value_list_from_gvalue (GValue *gval, gpointer pList)
     *kvplist = g_list_prepend (*kvplist, kvp);
 }
 
-static GValue*
-gvalue_from_kvp_value (KvpValue *kval)
+GValue*
+gvalue_from_kvp_value (const KvpValue *kval)
 {
     GValue *val;
     gnc_numeric num;

src/libqof/qof/kvp_frame.h

@@ -580,6 +580,12 @@ void kvp_frame_for_each_slot(KvpFrame *f,
 /** Internal helper routines, you probably shouldn't be using these. */
 gchar* kvp_frame_to_string(const KvpFrame *frame);
 
+/** Convert a kvp_value into a GValue. Frames aren't converted.
+ * @param kval: A KvpValue.
+ * @return GValue*. Must be freed with g_free().
+ */
+GValue* gvalue_from_kvp_value (const KvpValue *kval);
+
 /** KvpItem: GValue Exchange
  * \brief Transfer of KVP to and from GValue, with the key
  *

src/libqof/qof/qofinstance-p.h

@@ -129,7 +129,9 @@ gboolean qof_instance_has_slot (const QofInstance *inst, const char *path);
 void qof_instance_slot_delete (const QofInstance *inst, const char *path);
 void qof_instance_slot_delete_if_empty (const QofInstance *inst,
                                         const char *path);
-
+void qof_instance_foreach_slot (const QofInstance *inst, const char *path,
+                                void(*proc)(const char*, const GValue*, void*),
+                                void* data);
 #ifdef __cplusplus
 }
 #endif

src/libqof/qof/qofinstance.cpp

@@ -1287,5 +1287,31 @@ qof_instance_slot_delete_if_empty (const QofInstance *inst, const char *path)
         kvp_frame_set_frame_nc (inst->kvp_data, path, NULL);
 }
 
+struct wrap_param
+{
+    void (*proc)(const char*, const GValue*, void*);
+    void *user_data;
+};
+
+static void
+wrap_gvalue_function (const char* key, KvpValue *val, gpointer data)
+{
+    auto param = static_cast<wrap_param*>(data);
+    GValue *gv = gvalue_from_kvp_value(val);
+    param->proc(key, gv, param->user_data);
+    g_slice_free (GValue, gv);
+}
+
+void
+qof_instance_foreach_slot (const QofInstance *inst, const char* path,
+                           void (*proc)(const char*, const GValue*, void*),
+                           void* data)
+{
+    KvpFrame* frame = kvp_frame_get_frame (inst->kvp_data, path);
+    if (!frame) return;
+    wrap_param new_data {proc, data};
+    kvp_frame_for_each_slot(frame, wrap_gvalue_function, &new_data);
+}
+
 /* ========================== END OF FILE ======================= */