debug.c

   1 #ifdef NDEBUG
   2 static void debug(const char *errstr, ...) { }
   3 static void print_packet(const char *prefix, Packet *pkt) { }
   4 #else
   5
   6 static void debug(const char *errstr, ...) {
   7         va_list ap;
   8         va_start(ap, errstr);
   9         vfprintf(stderr, errstr, ap);
  10         va_end(ap);
  11 }
  12
  13 static void print_packet(const char *prefix, Packet *pkt) {
  14         static const char *msgtype[] = {
  15                 [MSG_CONTENT] = "CONTENT",
  16                 [MSG_ATTACH]  = "ATTACH",
  17                 [MSG_DETACH]  = "DETACH",
  18                 [MSG_RESIZE]  = "RESIZE",
  19                 [MSG_REDRAW]  = "REDRAW",
  20                 [MSG_EXIT]    = "EXIT",
  21         };
  22         const char *type = "UNKNOWN";
  23         if (pkt->type < countof(msgtype) && msgtype[pkt->type])
  24                 type = msgtype[pkt->type];
  25
  26         fprintf(stderr, "%s: %s ", prefix, type);
  27         switch (pkt->type) {
  28         case MSG_CONTENT:
  29                 for (size_t i = 0; i < pkt->len && i < sizeof(pkt->u.msg); i++)
  30                         fprintf(stderr, "%c", pkt->u.msg[i]);
  31                 break;
  32         case MSG_RESIZE:
  33                 fprintf(stderr, "%dx%d", pkt->u.ws.ws_col, pkt->u.ws.ws_row);
  34                 break;
  35         default:
  36                 fprintf(stderr, "len: %d", pkt->len);
  37                 break;
  38         }
  39         fprintf(stderr, "\n");
  40 }
  41
  42 #endif /* NDEBUG */