[Qemu-devel] [PATCH qom v1 1/2] qom: object_property_add: Add automatic arrayification

[Peter Crosthwaite]

If "[*]" is given as the last part of a QOM property name, treat that
as an array property. The added property is given the first available
name, replacing the * with a decimal number counting from 0.

First add with name "foo[*]" will be "foo[0]". Second "foo[1]" and so
on.

Signed-off-by: Peter Crosthwaite <address@hidden>
---
Suggest by Paolo and first pass discussion on list about the feature
here:

https://lists.nongnu.org/archive/html/qemu-devel/2014-06/msg03794.html

 qom/object.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/qom/object.c b/qom/object.c
index 0e8267b..c869e8e 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -739,6 +739,28 @@ object_property_add(Object *obj, const char *name, const 
char *type,
 {
     ObjectProperty *prop;
 
+    if (strlen(name) >= 3 && !strncmp(name + strlen(name) - 3, "[*]", 3)) {
+        int i;
+        ObjectProperty *ret;
+        char *name_no_array = g_strdup(name);
+
+        name_no_array[strlen(name) - 3] = '\0';
+        for (i = 0; ; ++i) {
+            char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
+            Error *local_err = NULL;
+            ret = object_property_add(obj, full_name, type, get, set,
+                                      release, opaque, &local_err);
+
+            g_free(full_name);
+            if (!local_err) {
+                break;
+            }
+            error_free(local_err);
+        }
+        g_free(name_no_array);
+        return ret;
+    }
+
     QTAILQ_FOREACH(prop, &obj->properties, node) {
         if (strcmp(prop->name, name) == 0) {
             error_setg(errp, "attempt to add duplicate property '%s'"
-- 
2.0.1.1.gfbfc394