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/* $Id: tty.c,v 1.62 2009-01-19 19:01:11 nicm 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 <string.h>
#include <termios.h>
#include <unistd.h>
#include "tmux.h"
void tty_fill_acs(struct tty *);
u_char tty_get_acs(struct tty *, u_char);
void tty_emulate_repeat(
struct tty *, enum tty_code_code, enum tty_code_code, u_int);
void tty_raw(struct tty *, const char *);
void tty_reset(struct tty *);
void tty_region(struct tty *, struct screen *, u_int);
void tty_attributes(struct tty *, const struct grid_cell *);
void tty_attributes_fg(struct tty *, const struct grid_cell *);
void tty_attributes_bg(struct tty *, const struct grid_cell *);
void tty_cmd_bell(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_carriagereturn(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_cell(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearendofline(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearendofscreen(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearline(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearscreen(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearstartofline(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_clearstartofscreen(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_cursormode(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_deletecharacter(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_deleteline(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_insertcharacter(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_insertline(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_insertmode(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_kcursormode(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_kkeypadmode(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_linefeed(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_mousemode(struct tty *, struct screen *, u_int, va_list);
void tty_cmd_reverseindex(struct tty *, struct screen *, u_int, va_list);
void (*tty_cmds[])(struct tty *, struct screen *, u_int, va_list) = {
tty_cmd_cell,
tty_cmd_clearendofline,
tty_cmd_clearendofscreen,
tty_cmd_clearline,
tty_cmd_clearscreen,
tty_cmd_clearstartofline,
tty_cmd_clearstartofscreen,
tty_cmd_cursormode,
tty_cmd_deletecharacter,
tty_cmd_deleteline,
tty_cmd_insertcharacter,
tty_cmd_insertline,
tty_cmd_insertmode,
tty_cmd_kcursormode,
tty_cmd_kkeypadmode,
tty_cmd_linefeed,
tty_cmd_mousemode,
tty_cmd_reverseindex,
};
void
tty_init(struct tty *tty, char *path, char *term)
{
tty->path = xstrdup(path);
if (term == NULL)
tty->termname = xstrdup("unknown");
else
tty->termname = xstrdup(term);
tty->flags = 0;
tty->term_flags = 0;
}
int
tty_open(struct tty *tty, char **cause)
{
int mode;
tty->fd = open(tty->path, O_RDWR|O_NONBLOCK);
if (tty->fd == -1) {
xasprintf(cause, "%s: %s", tty->path, strerror(errno));
return (-1);
}
if ((mode = fcntl(tty->fd, F_GETFL)) == -1)
fatal("fcntl");
if (fcntl(tty->fd, F_SETFL, mode|O_NONBLOCK) == -1)
fatal("fcntl");
if (debug_level > 3)
tty->log_fd = open("tmux.out", O_WRONLY|O_CREAT|O_TRUNC, 0644);
else
tty->log_fd = -1;
if ((tty->term = tty_term_find(tty->termname, tty->fd, cause)) == NULL)
goto error;
tty->in = buffer_create(BUFSIZ);
tty->out = buffer_create(BUFSIZ);
tty->flags &= TTY_UTF8;
tty_start_tty(tty);
tty_keys_init(tty);
tty_fill_acs(tty);
return (0);
error:
close(tty->fd);
tty->fd = -1;
return (-1);
}
void
tty_start_tty(struct tty *tty)
{
struct termios tio;
#ifdef TIOCFLUSH
int what;
#endif
if (tcgetattr(tty->fd, &tty->tio) != 0)
fatal("tcgetattr failed");
memcpy(&tio, &tty->tio, sizeof tio);
tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
tio.c_iflag |= IGNBRK;
tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
ECHOPRT|ECHOKE|ECHOCTL|ISIG);
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (tcsetattr(tty->fd, TCSANOW, &tio) != 0)
fatal("tcsetattr failed");
#ifdef TIOCFLUSH
what = 0;
if (ioctl(tty->fd, TIOCFLUSH, &what) != 0)
fatal("ioctl(TIOCFLUSH)");
#endif
tty_putcode(tty, TTYC_IS1);
tty_putcode(tty, TTYC_IS2);
tty_putcode(tty, TTYC_IS3);
tty_putcode(tty, TTYC_SMCUP);
tty_putcode(tty, TTYC_SMKX);
tty_putcode(tty, TTYC_ENACS);
tty_putcode(tty, TTYC_CLEAR);
memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
tty->cx = UINT_MAX;
tty->cy = UINT_MAX;
tty->rlower = UINT_MAX;
tty->rupper = UINT_MAX;
}
void
tty_stop_tty(struct tty *tty)
{
struct winsize ws;
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1) {
if (errno != EBADF && errno != ENXIO && errno != ENOTTY)
fatal("ioctl(TIOCGWINSZ)");
} else if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1) {
if (errno != EBADF && errno != ENXIO && errno != ENOTTY)
fatal("tcsetattr failed");
} else {
tty_raw(tty,
tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
}
}
void
tty_fill_acs(struct tty *tty)
{
const char *ptr;
memset(tty->acs, 0, sizeof tty->acs);
if (!tty_term_has(tty->term, TTYC_ACSC))
return;
ptr = tty_term_string(tty->term, TTYC_ACSC);
if (strlen(ptr) % 2 != 0)
return;
for (; *ptr != '\0'; ptr += 2)
tty->acs[(u_char) ptr[0]] = ptr[1];
}
u_char
tty_get_acs(struct tty *tty, u_char ch)
{
if (tty->acs[ch] != '\0')
return (tty->acs[ch]);
return (ch);
}
void
tty_close(struct tty *tty, int no_stop)
{
if (tty->fd == -1)
return;
if (tty->log_fd != -1) {
close(tty->log_fd);
tty->log_fd = -1;
}
if (!no_stop)
tty_stop_tty(tty);
tty_term_free(tty->term);
tty_keys_free(tty);
close(tty->fd);
tty->fd = -1;
buffer_destroy(tty->in);
buffer_destroy(tty->out);
}
void
tty_free(struct tty *tty, int no_stop)
{
tty_close(tty, no_stop);
if (tty->path != NULL)
xfree(tty->path);
if (tty->termname != NULL)
xfree(tty->termname);
}
void
tty_raw(struct tty *tty, const char *s)
{
write(tty->fd, s, strlen(s));
}
void
tty_putcode(struct tty *tty, enum tty_code_code code)
{
tty_puts(tty, tty_term_string(tty->term, code));
}
void
tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
{
if (a < 0)
return;
tty_puts(tty, tty_term_string1(tty->term, code, a));
}
void
tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
{
if (a < 0 || b < 0)
return;
tty_puts(tty, tty_term_string2(tty->term, code, a, b));
}
void
tty_puts(struct tty *tty, const char *s)
{
if (*s == '\0')
return;
buffer_write(tty->out, s, strlen(s));
if (tty->log_fd != -1)
write(tty->log_fd, s, strlen(s));
}
void
tty_putc(struct tty *tty, char ch)
{
if (tty->cell.attr & GRID_ATTR_CHARSET)
ch = tty_get_acs(tty, ch);
buffer_write8(tty->out, ch);
if (ch >= 0x20)
tty->cx++; /* This is right most of the time. */
if (tty->log_fd != -1)
write(tty->log_fd, &ch, 1);
}
void
tty_set_title(struct tty *tty, const char *title)
{
if (strstr(tty->termname, "xterm") == NULL &&
strstr(tty->termname, "rxvt") == NULL &&
strcmp(tty->termname, "screen") != 0)
return;
tty_puts(tty, "\033]0;");
tty_puts(tty, title);
tty_putc(tty, '\007');
}
void
tty_emulate_repeat(
struct tty *tty, enum tty_code_code code, enum tty_code_code code1, u_int n)
{
if (tty_term_has(tty->term, code))
tty_putcode1(tty, code, n);
else {
while (n-- > 0)
tty_putcode(tty, code1);
}
}
void
tty_write(struct tty *tty, struct screen *s, u_int oy, enum tty_cmd cmd, ...)
{
va_list ap;
va_start(ap, cmd);
tty_vwrite(tty, s, oy, cmd, ap);
va_end(ap);
}
void
tty_vwrite(
struct tty *tty, struct screen *s, u_int oy, enum tty_cmd cmd, va_list ap)
{
if (tty->flags & TTY_FREEZE || tty->term == NULL)
return;
if (tty_cmds[cmd] != NULL)
tty_cmds[cmd](tty, s, oy, ap);
}
void
tty_cmd_insertcharacter(
struct tty *tty, unused struct screen *s, u_int oy, va_list ap)
{
u_int ua;
ua = va_arg(ap, u_int);
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
if (tty_term_has(tty->term, TTYC_ICH) ||
tty_term_has(tty->term, TTYC_ICH1))
tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ua);
else {
tty_putcode(tty, TTYC_SMIR);
while (ua-- > 0)
tty_putc(tty, ' ');
tty_putcode(tty, TTYC_RMIR);
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
}
void
tty_cmd_deletecharacter(
struct tty *tty, unused struct screen *s, u_int oy, va_list ap)
{
u_int ua;
ua = va_arg(ap, u_int);
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ua);
}
void
tty_cmd_insertline(
struct tty *tty, unused struct screen *s, u_int oy, va_list ap)
{
u_int ua;
ua = va_arg(ap, u_int);
tty_reset(tty);
tty_region(tty, s, oy);
tty_cursor(tty, s->cx, s->cy, oy);
tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ua);
}
void
tty_cmd_deleteline(
struct tty *tty, unused struct screen *s, u_int oy, va_list ap)
{
u_int ua;
ua = va_arg(ap, u_int);
tty_reset(tty);
tty_region(tty, s, oy);
tty_cursor(tty, s->cx, s->cy, oy);
tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ua);
}
void
tty_cmd_clearline(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
if (tty_term_has(tty->term, TTYC_EL)) {
tty_putcode2(tty, TTYC_CUP, oy + s->cy, 0);
tty_putcode(tty, TTYC_EL);
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
} else {
tty_putcode2(tty, TTYC_CUP, oy + s->cy, 0);
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
}
void
tty_cmd_clearendofline(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
if (tty_term_has(tty->term, TTYC_EL))
tty_putcode(tty, TTYC_EL);
else {
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
for (i = s->cx; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
}
void
tty_cmd_clearstartofline(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
if (tty_term_has(tty->term, TTYC_EL1))
tty_putcode(tty, TTYC_EL1);
else {
tty_putcode2(tty, TTYC_CUP, oy + s->cy, 0);
for (i = 0; i < s->cx + 1; i++)
tty_putc(tty, ' ');
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
}
void
tty_cmd_cursormode(
struct tty *tty, unused struct screen *s, unused u_int oy, va_list ap)
{
int ua;
ua = va_arg(ap, int);
if (tty->cursor == ua)
return;
tty->cursor = ua;
if (ua && !(tty->flags & TTY_NOCURSOR))
tty_putcode(tty, TTYC_CNORM);
else
tty_putcode(tty, TTYC_CIVIS);
}
void
tty_cmd_reverseindex(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
tty_reset(tty);
tty_region(tty, s, oy);
tty_cursor(tty, s->cx, s->cy, oy);
tty_putcode(tty, TTYC_RI);
}
void
tty_cmd_insertmode(unused struct tty *tty,
unused struct screen *s, unused u_int oy, va_list ap)
{
int ua;
ua = va_arg(ap, int);
#if 0
/* XXX */
if (ua)
tty_puts(tty, enter_insert_mode);
else
tty_puts(tty, exit_insert_mode);
#endif
}
void
tty_cmd_mousemode(
struct tty *tty, unused struct screen *s, unused u_int oy, va_list ap)
{
int ua;
if (!tty_term_has(tty->term, TTYC_KMOUS))
return;
ua = va_arg(ap, int);
if (ua)
tty_puts(tty, "\033[?1000h");
else
tty_puts(tty, "\033[?1000l");
}
void
tty_cmd_kcursormode(unused struct tty *tty,
unused struct screen *s, unused u_int oy, unused va_list ap)
{
}
void
tty_cmd_kkeypadmode(unused struct tty *tty,
unused struct screen *s, unused u_int oy, unused va_list ap)
{
}
void
tty_cmd_linefeed(struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
tty_reset(tty);
tty_region(tty, s, oy);
tty_cursor(tty, s->cx, s->cy, oy);
tty_putc(tty, '\n');
}
void
tty_cmd_bell(struct tty *tty,
unused struct screen *s, unused u_int oy, unused va_list ap)
{
tty_putcode(tty, TTYC_BEL);
}
void
tty_cmd_clearendofscreen(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i, j;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
if (tty_term_has(tty->term, TTYC_EL)) {
for (i = oy + s->cy; i < oy + screen_size_y(s); i++) {
tty_putcode(tty, TTYC_EL);
if (i != screen_size_y(s) - 1)
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
}
} else {
for (i = s->cx; i < screen_size_y(s); i++)
tty_putc(tty, ' ');
for (j = oy + s->cy; j < oy + screen_size_y(s); j++) {
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
void
tty_cmd_clearstartofscreen(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i, j;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
tty_putcode2(tty, TTYC_CUP, oy, 0);
if (tty_term_has(tty->term, TTYC_EL)) {
for (i = 0; i < oy + s->cy; i++) {
tty_putcode(tty, TTYC_EL);
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
}
tty_putcode2(tty, TTYC_CUP, oy + s->cy, 0);
} else {
for (j = 0; j < oy + s->cy; j++) {
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
for (i = 0; i < s->cx; i++)
tty_putc(tty, ' ');
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
void
tty_cmd_clearscreen(
struct tty *tty, struct screen *s, u_int oy, unused va_list ap)
{
u_int i, j;
tty_reset(tty);
tty_cursor(tty, s->cx, s->cy, oy);
tty_putcode2(tty, TTYC_CUP, oy, 0);
if (tty_term_has(tty->term, TTYC_EL)) {
for (i = 0; i < screen_size_y(s); i++) {
tty_putcode(tty, TTYC_EL);
if (i != screen_size_y(s) - 1)
tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
}
} else {
for (j = 0; j < screen_size_y(s); j++) {
for (i = 0; i < screen_size_x(s); i++)
tty_putc(tty, ' ');
}
}
tty_putcode2(tty, TTYC_CUP, oy + s->cy, s->cx);
}
void
tty_cmd_cell(struct tty *tty, struct screen *s, u_int oy, va_list ap)
{
struct grid_cell *gc;
u_int i, width;
u_char out[4];
tty_cursor(tty, s->cx, s->cy, oy);
gc = va_arg(ap, struct grid_cell *);
/* If this is a padding character, do nothing. */
if (gc->flags & GRID_FLAG_PADDING)
return;
/* Set the attributes. */
tty_attributes(tty, gc);
/* If not UTF-8, write directly. */
if (!(gc->flags & GRID_FLAG_UTF8)) {
if (gc->data > 0xff || gc->data < 0x20 || gc->data == 0x7f)
return;
tty_putc(tty, gc->data);
return;
}
/* If the terminal doesn't support UTF-8, write underscores. */
if (!(tty->flags & TTY_UTF8)) {
width = utf8_width(gc->data);
while (width-- > 0)
tty_putc(tty, '_');
return;
}
/* Otherwise, unpack UTF-8 and write it. */
utf8_split(gc->data, out);
for (i = 0; i < 4; i++) {
if (out[i] == 0xff)
break;
tty_putc(tty, out[i]);
}
}
void
tty_reset(struct tty *tty)
{
struct grid_cell *tc = &tty->cell;
tc->data = grid_default_cell.data;
if (memcmp(tc, &grid_default_cell, sizeof *tc) == 0)
return;
if (tty_term_has(tty->term, TTYC_RMACS) && tc->attr & GRID_ATTR_CHARSET)
tty_putcode(tty, TTYC_RMACS);
tty_putcode(tty, TTYC_SGR0);
memcpy(tc, &grid_default_cell, sizeof *tc);
}
void
tty_region(struct tty *tty, struct screen *s, u_int oy)
{
if (tty->rlower != oy + s->rlower || tty->rupper != oy + s->rupper) {
tty->rlower = oy + s->rlower;
tty->rupper = oy + s->rupper;
tty->cx = 0;
tty->cy = 0;
tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
}
}
void
tty_cursor(struct tty *tty, u_int cx, u_int cy, u_int oy)
{
if (cx == 0 && tty->cx != 0 && tty->cy == oy + cy) {
tty->cx = 0;
tty_putc(tty, '\r');
} else if (tty->cx != cx || tty->cy != oy + cy) {
tty->cx = cx;
tty->cy = oy + cy;
tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
}
}
void
tty_attributes(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell;
u_char changed;
u_int fg, bg;
/* If any bits are being cleared, reset everything. */
if (tc->attr & ~gc->attr)
tty_reset(tty);
/* Filter out attribute bits already set. */
changed = gc->attr & ~tc->attr;
tc->attr = gc->attr;
/* Set the attributes. */
fg = gc->fg;
bg = gc->bg;
if (changed & GRID_ATTR_BRIGHT)
tty_putcode(tty, TTYC_BOLD);
if (changed & GRID_ATTR_DIM)
tty_putcode(tty, TTYC_DIM);
if (changed & GRID_ATTR_ITALICS)
tty_putcode(tty, TTYC_SMSO);
if (changed & GRID_ATTR_UNDERSCORE)
tty_putcode(tty, TTYC_SMUL);
if (changed & GRID_ATTR_BLINK)
tty_putcode(tty, TTYC_BLINK);
if (changed & GRID_ATTR_REVERSE) {
if (tty_term_has(tty->term, TTYC_REV))
tty_putcode(tty, TTYC_REV);
else if (tty_term_has(tty->term, TTYC_SMSO))
tty_putcode(tty, TTYC_SMSO);
}
if (changed & GRID_ATTR_HIDDEN)
tty_putcode(tty, TTYC_INVIS);
if (changed & GRID_ATTR_CHARSET)
tty_putcode(tty, TTYC_SMACS);
/* Set foreground colour. */
if (fg != tc->fg ||
(gc->flags & GRID_FLAG_FG256) != (tc->flags & GRID_FLAG_FG256)) {
tty_attributes_fg(tty, gc);
tc->fg = fg;
}
/* Set background colour. */
if (bg != tc->bg ||
(gc->flags & GRID_FLAG_BG256) != (tc->flags & GRID_FLAG_BG256)) {
tty_attributes_bg(tty, gc);
tc->bg = bg;
}
}
void
tty_attributes_fg(struct tty *tty, const struct grid_cell *gc)
{
char s[32];
u_char fg = gc->fg;
if (gc->flags & GRID_FLAG_FG256) {
if ((tty->term->flags & TERM_256COLOURS) ||
(tty->term_flags & TERM_256COLOURS)) {
xsnprintf(s, sizeof s, "\033[38;5;%hhum", fg);
tty_puts(tty, s);
return;
}
fg = colour_translate256(fg);
if (fg & 8) {
fg &= 7;
tty_putcode(tty, TTYC_BOLD);
tty->cell.attr |= GRID_ATTR_BRIGHT;
} else if (tty->cell.attr & GRID_ATTR_BRIGHT)
tty_reset(tty);
}
if (fg == 8 &&
!(tty->term->flags & TERM_HASDEFAULTS) &&
!(tty->term_flags & TERM_HASDEFAULTS))
fg = 7;
if (fg == 8)
tty_puts(tty, "\033[39m");
else
tty_putcode1(tty, TTYC_SETAF, fg);
}
void
tty_attributes_bg(struct tty *tty, const struct grid_cell *gc)
{
char s[32];
u_char bg = gc->bg;
if (gc->flags & GRID_FLAG_BG256) {
if ((tty->term->flags & TERM_256COLOURS) ||
(tty->term_flags & TERM_256COLOURS)) {
xsnprintf(s, sizeof s, "\033[48;5;%hhum", bg);
tty_puts(tty, s);
return;
}
bg = colour_translate256(bg);
if (bg & 8) {
/*
* Bold background; can't do this on standard
* terminals...
*/
#if 0
xsnprintf(s, sizeof s, "\033[%hhum", 92 + bg);
tty_puts(tty, s);
return;
#endif
bg &= 7;
}
}
if (bg == 8 &&
!(tty->term->flags & TERM_HASDEFAULTS) &&
!(tty->term_flags & TERM_HASDEFAULTS))
bg = 0;
if (bg == 8)
tty_puts(tty, "\033[49m");
else
tty_putcode1(tty, TTYC_SETAB, bg);
}
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