Added the ability to unregister a signal.

Author: kylef

geoffrey.h

@@ -31,6 +31,7 @@ int gb_init(geoffrey * g, FILE *error, char *host, int port, char *nick, char *r
 void gb_finalize(geoffrey *g);
 void gb_dealloc(geoffrey *g);
 void gb_registerSignal(geoffrey *g, char *message, gb_callback *hander);
+void gb_unregisterSignal(geoffrey *g, gb_callback *handler);
 void gb_runSignal(geoffrey *g, char *message, void *data);
 int gb_connect(geoffrey *g);
 void gb_loop(geoffrey *g, int reconnect);

libgeoffrey/main.c

@@ -64,6 +64,26 @@ void gb_registerSignal(geoffrey *g, char *message, gb_callback *handler) {
  g->signals = s;
 }
 
+void gb_unregisterSignal(geoffrey *g, gb_callback *handler) {
+ gb_signal *ptr, *prev;
+ for (ptr = g->signals, prev = NULL; ptr != NULL; prev = ptr, ptr = ptr->next) {
+ if (handler == ptr->callback) {
+ if (ptr->next != NULL) {
+ if (prev == NULL) {
+ g->signals = ptr->next;
+ } else {
+ prev->next = ptr->next;
+ }
+ } else {
+ prev->next = NULL;
+ }
+ 
+ free(ptr->message);
+ free(ptr);
+ }
+ }
+}
+
 void gb_runSignal(geoffrey *g, char *message, void *data) {
  gb_signal *ptr;
  for (ptr = g->signals; ptr != NULL; ptr = ptr->next) {