util: priomsg: Allow passing priomsg_update_p a null pm

[secnet.git] / util.c

diff --git a/util.c b/util.c
index d0c3d966de4bcd2feb177dcb32300717e3f7b2b1..241196227a80cd71e655daea6d5368fabadf37dd 100644 (file)
--- a/util.c
+++ b/util.c
@@ -401,6 +401,33 @@ const char *truncmsg_terminate(const struct buffer_if *buf)
     return buf->start;
 }
 
+void priomsg_new(struct priomsg *pm, int32_t maxlen)
+{
+    buffer_new(&pm->m, maxlen);
+    pm->prio = INT_MIN;
+}
+void priomsg_reset(struct priomsg *pm)
+{
+    buffer_init(&pm->m, 0);
+    pm->prio = INT_MIN;
+}
+bool_t priomsg_update_p(struct priomsg *pm, int prio)
+{
+    if (!pm) return False;
+    if (prio <= pm->prio) return False;
+    buffer_init(&pm->m, 0);
+    pm->prio = prio;
+    return True;
+}
+const char *priomsg_getmessage(const struct priomsg *pm, const char *defmsg)
+{
+    if (pm->prio >= INT_MIN)
+       return truncmsg_terminate(&pm->m);
+    else
+       return defmsg;
+}
+
+
 void buffer_new(struct buffer_if *buf, int32_t len)
 {
     buf->free=True;