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/* uuterm, Copyright (C) 2006 Rich Felker; licensed under GNU GPL v2 only */
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <locale.h>
#include <sys/select.h>
#include <sys/time.h> /* for broken systems */
#include "uuterm.h"
#include "ucf.h"
int ucf_load(struct ucf *, const char *);
extern const unsigned char vga_ascii_ucf[];
extern const size_t vga_ascii_ucf_size;
int main(int argc, char *argv[])
{
struct uuterm t = { };
struct uudisp d = { };
struct ucf f = { };
int tty, max;
int i, l;
unsigned char b[256];
fd_set fds, wfds;
struct timeval tv;
void *buf;
setlocale(LC_CTYPE, "");
if (ucf_load(&f, getenv("UUTERM_FONT")) < 0
&& ucf_init(&f, vga_ascii_ucf, vga_ascii_ucf_size) < 0)
return 1;
d.cell_w = 8;
d.cell_h = 16;
d.font = &f;
if (uudisp_open(&d) < 0)
return 1;
for (i=1; i<argc; i++)
argv[i-1] = argv[i];
argv[i-1] = NULL;
if ((tty = uutty_open(argc > 1 ? argv : NULL, d.w, d.h)) < 0)
return 1;
signal(SIGHUP, SIG_IGN);
if (!(buf = uuterm_buf_alloc(d.w, d.h))) {
uudisp_close(&d);
return 1;
}
uuterm_replace_buffer(&t, d.w, d.h, buf);
uuterm_reset(&t);
for (;;) {
/* Setup fd_set containing fd's used by display and our tty */
FD_ZERO(&fds);
FD_ZERO(&wfds);
FD_SET(tty, &fds);
max = uudisp_fd_set(&d, tty, &fds);
if (d.inlen) FD_SET(tty, &wfds);
tv.tv_sec = 0;
tv.tv_usec = 250000;
if (select(max, &fds, &wfds, NULL, &tv) <= 0) {
d.blink++;
FD_ZERO(&fds);
}
/* Process input from the tty, up to buffer size */
if (FD_ISSET(tty, &fds)) {
if ((l = read(tty, b, sizeof b)) <= 0)
break;
for (i=0; i<l; i++) {
uuterm_stuff_byte(&t, b[i]);
if (t.reslen) write(tty, t.res, t.reslen);
}
}
/* Write input from previous event */
if (d.inlen) {
int l = write(tty, d.intext, d.inlen);
if (l < 0) l = 0;
d.intext += l;
d.inlen -= l;
d.blink = 1;
}
/* Look for events from the display */
uudisp_next_event(&d, &fds);
if (d.w != t.w || d.h != t.h) {
void *newbuf = uuterm_buf_alloc(d.w, d.h);
if (newbuf) {
uuterm_replace_buffer(&t, d.w, d.h, newbuf);
uuterm_free(buf);
buf = newbuf;
uutty_resize(tty, d.w, d.h);
}
}
/* If no more input is pending, refresh display */
FD_ZERO(&fds);
FD_SET(tty, &fds);
tv.tv_sec = tv.tv_usec = 0;
select(max, &fds, NULL, NULL, &tv);
if (!FD_ISSET(tty, &fds))
uudisp_refresh(&d, &t);
}
uudisp_close(&d);
return 0;
}
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