LuPPC/src/c/event.c

70 lines
1.7 KiB
C
Raw Normal View History

2016-02-27 06:09:38 +11:00
#include "lupi.h"
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <stdlib.h>
#include <unistd.h>
#include <event2/event.h>
#include <event2/event_struct.h>
struct event_base *base;
struct event stdinEvent;
int nevt = 0;
static void handleStdin(evutil_socket_t fd, short what, void *ptr) {
char buf;
int r = read(fd, &buf, 1); /* TODO: Wide chars? */
if(r > 0) {
lua_State* L = getL();
lua_getglobal(L, "pushEvent");
lua_pushstring(L, "key_down");
lua_pushstring(L, "TODO:SetThisUuid");/* Also in textgpu.lua */
lua_pushnumber(L, buf);
lua_pushnumber(L, -1);
lua_pushstring(L, "root");
lua_call(L, 5, 0);
lua_getglobal(L, "pushEvent");
lua_pushstring(L, "key_up");
lua_pushstring(L, "TODO:SetThisUuid");
lua_pushnumber(L, buf);
lua_pushnumber(L, -1);
lua_pushstring(L, "root");
lua_call(L, 5, 0);
nevt += 2;
}
}
void event_prepare() {
base = event_base_new();
event_assign(&stdinEvent, base, STDIN_FILENO, EV_READ, handleStdin, NULL);
}
static void add_events(struct timeval* timeout) {
event_add(&stdinEvent, timeout);
}
int event_pull(int _timeout) {
if(_timeout > 0) { /* wait max this much time for event */
struct timeval timeout = {_timeout / 1000, (_timeout % 1000) * 1000000};
add_events(&timeout);
/* event_base_loopexit(base, &timeout); */
event_base_loop(base, EVLOOP_ONCE);
} else if(_timeout == 0) { /* Get event without blocking */
add_events(NULL);
event_base_loop(base, EVLOOP_ONCE | EVLOOP_NONBLOCK);
} else { /* wait for event to appear */
add_events(NULL);
event_base_loopexit(base, NULL);
event_base_loop(base, EVLOOP_ONCE);
}
int n = nevt;
nevt = 0;
return n;
}