[Qemu-devel] [PULL 3/7] qom: Add automatic arrayification to object_property_add()

["Andreas Färber" <afaerber@suse.de>]

From: Peter Crosthwaite <peter.crosthwaite@xilinx.com>

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.

Callers may inspect the ObjectProperty * return value to see what
number the added property was given.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 qom/object.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/qom/object.c b/qom/object.c
index a298b32..da0919a 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -728,6 +728,27 @@ object_property_add(Object *obj, const char *name, const char *type,
                     void *opaque, Error **errp)
 {
     ObjectProperty *prop;
+    size_t name_len = strlen(name);
+
+    if (name_len >= 3 && !memcmp(name + name_len - 3, "[*]", 4)) {
+        int i;
+        ObjectProperty *ret;
+        char *name_no_array = g_strdup(name);
+
+        name_no_array[name_len - 3] = '\0';
+        for (i = 0; ; ++i) {
+            char *full_name = g_strdup_printf("%s[%d]", name_no_array, i);
+
+            ret = object_property_add(obj, full_name, type, get, set,
+                                      release, opaque, NULL);
+            g_free(full_name);
+            if (ret) {
+                break;
+            }
+        }
+        g_free(name_no_array);
+        return ret;
+    }
 
     QTAILQ_FOREACH(prop, &obj->properties, node) {
         if (strcmp(prop->name, name) == 0) {
-- 
1.8.4.5