#include <stdlib.h>

#include <ev.h>

#define UNUSED(x) ((void)(x))

#define IOEV_NONE      0
#define IOEV_READ      1
#define IOEV_WRITE     2
#define IOEV_TIMEOUT   4
#define IOEV_ERROR   128

void ioev_event_callback(void* watcher, int revents);

struct ev_loop *ioev_ev_default_loop (unsigned int flags) {
	return ev_default_loop(flags);
}

static void io_cb(struct ev_loop *loop, ev_io *w, int revents) {
	int ev = 0;
	UNUSED(loop);

	if (revents & EV_READ) ev = ev | IOEV_READ;
	if (revents & EV_WRITE) ev = ev | IOEV_WRITE;
	if (revents & EV_ERROR) ev = ev | IOEV_ERROR;

	ioev_event_callback(w->data, ev);
}

ev_io* ioev_io_watcher_new(void *watcher) {
	ev_io *w = malloc(sizeof(ev_io));
	ev_io_init(w, io_cb, -1, 0);
	w->data = watcher;

	return w;
}

void ioev_io_watcher_free(ev_io *w) {
	free(w);
}

void ioev_io_set(ev_io *w, int fd, int ev) {
	int events = 0;

	if (ev & IOEV_READ) events = events | EV_READ;
	if (ev & IOEV_WRITE) events = events | EV_WRITE;

	ev_io_set(w, fd, events);
}