int FastSerial::available(void)
{
struct tcp_state *s = &tcp_state[_u2x];
check_connection(s);
if (!s->connected) {
return 0;
}
if (select_check(s->fd)) {
#ifdef FIONREAD
// use FIONREAD to get exact value if possible
int num_ready;
if (ioctl(s->fd, FIONREAD, &num_ready) == 0) {
if (num_ready > BUFFER_SIZE) {
return BUFFER_SIZE;
}
if (num_ready == 0) {
// EOF is reached
fprintf(stdout, "Closed connection on serial port %u\n", s->serial_port);
close(s->fd);
s->connected = false;
return 0;
}
return num_ready;
}
#endif
return 1; // best we can do is say 1 byte available
}
return 0;
}
void
selecting (void)
{
struct unit *up;
if (mousebutton[1]) {
if (selectbox.drawing == 0) {
selectbox.drawing = 1;
selectbox.x1 = mouse_x;
selectbox.y1 = mouse_y;
selectbox.x2 = mouse_x;
selectbox.y2 = mouse_y;
check_direction (&selectbox);
} else {
selectbox.x2 = mouse_x;
selectbox.y2 = mouse_y;
check_direction (&selectbox);
}
for (up = first_unit; up; up = up->next) {
switch (selectbox.direction) {
case 1:
select_check (selectbox.x2, selectbox.x1,
selectbox.y2, selectbox.y1);
break;
case 2:
select_check (selectbox.x1, selectbox.x2,
selectbox.y2, selectbox.y1);
break;
case 3:
select_check (selectbox.x2, selectbox.x1,
selectbox.y1, selectbox.y2);
break;
case 4:
select_check (selectbox.x1, selectbox.x2,
selectbox.y1, selectbox.y2);
break;
}
}
}
if (mousebutton[1] == 0) {
selectbox.drawing = 0;
}
}
void piece_mesh_select_all_poly(void)
{
int n,k,sel_count,type,mesh_idx,poly_idx;
map_mesh_type *mesh;
sel_count=select_count();
for (n=0;n!=sel_count;n++) {
select_get(n,&type,&mesh_idx,&poly_idx);
if (type!=item_map_mesh) continue;
mesh=&map.mesh.meshes[mesh_idx];
for (k=0;k!=mesh->npoly;k++) {
if (!select_check(item_map_mesh,mesh_idx,k)) select_add(item_map_mesh,mesh_idx,k);
}
}
}
/*
see if a new connection is coming in
*/
static void check_connection(struct tcp_state *s)
{
if (s->connected) {
// we only want 1 connection at a time
return;
}
if (select_check(s->listen_fd)) {
s->fd = accept(s->listen_fd, NULL, NULL);
if (s->fd != -1) {
int one = 1;
s->connected = true;
setsockopt(s->fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one));
setsockopt(s->fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one));
printf("New connection on serial port %u\n", s->serial_port);
if (!desktop_state.slider) {
set_nonblocking(s->fd);
}
}
}
}
