/* $Id: tty.c,v 1.199 2011-01-07 14:34:45 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "tmux.h"
void tty_read_callback(struct bufferevent *, void *);
void tty_error_callback(struct bufferevent *, short, void *);
int tty_try_256(struct tty *, u_char, const char *);
int tty_try_88(struct tty *, u_char, const char *);
void tty_colours(struct tty *, const struct grid_cell *);
void tty_check_fg(struct tty *, struct grid_cell *);
void tty_check_bg(struct tty *, struct grid_cell *);
void tty_colours_fg(struct tty *, const struct grid_cell *);
void tty_colours_bg(struct tty *, const struct grid_cell *);
void tty_redraw_region(struct tty *, const struct tty_ctx *);
void tty_emulate_repeat(
struct tty *, enum tty_code_code, enum tty_code_code, u_int);
void tty_cell(struct tty *,
const struct grid_cell *, const struct grid_utf8 *);
#define tty_use_acs(tty) \
(tty_term_has(tty->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
void
tty_init(struct tty *tty, int fd, char *term)
{
char *path;
memset(tty, 0, sizeof *tty);
tty->log_fd = -1;
if (term == NULL || *term == '\0')
tty->termname = xstrdup("unknown");
else
tty->termname = xstrdup(term);
tty->fd = fd;
if ((path = ttyname(fd)) == NULL)
fatalx("ttyname failed");
tty->path = xstrdup(path);
tty->flags = 0;
tty->term_flags = 0;
}
int
tty_resize(struct tty *tty)
{
struct winsize ws;
u_int sx, sy;
if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
sx = ws.ws_col;
if (sx == 0)
sx = 80;
sy = ws.ws_row;
if (sy == 0)
sy = 24;
} else {
sx = 80;
sy = 24;
}
if (sx == tty->sx && sy == tty->sy)
return (0);
tty->sx = sx;
tty->sy = sy;
tty->cx = UINT_MAX;
tty->cy = UINT_MAX;
tty->rupper = UINT_MAX;
tty->rlower = UINT_MAX;
/*
* If the terminal has been started, reset the actual scroll region and
* cursor position, as this may not have happened.
*/
if (tty->flags & TTY_STARTED) {
tty_cursor(tty, 0, 0);
tty_region(tty, 0, tty
| 