mirror of https://github.com/tmux/tmux.git
671 lines
15 KiB
C
671 lines
15 KiB
C
/* $Id: tty.c,v 1.35 2008-06-23 16:58:49 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <ncurses.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "tmux.h"
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struct tty_term *tty_find_term(char *, int,char **);
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void tty_free_term(struct tty_term *);
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void tty_fill_acs(struct tty *);
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u_char tty_get_acs(struct tty *, u_char);
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const char *tty_strip(const char *);
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void tty_raw(struct tty *, const char *);
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void tty_puts(struct tty *, const char *);
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void tty_putc(struct tty *, char);
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void tty_attributes(struct tty *, u_char, u_char);
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char tty_translate(char);
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TAILQ_HEAD(, tty_term) tty_terms = TAILQ_HEAD_INITIALIZER(tty_terms);
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void
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tty_init(struct tty *tty, char *path, char *term)
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{
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tty->path = xstrdup(path);
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if (term == NULL)
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tty->termname = xstrdup("unknown");
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else
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tty->termname = xstrdup(term);
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}
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int
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tty_open(struct tty *tty, char **cause)
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{
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struct termios tio;
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int what, mode;
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tty->fd = open(tty->path, O_RDWR|O_NONBLOCK);
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if (tty->fd == -1) {
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xasprintf(cause, "%s: %s", tty->path, strerror(errno));
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return (-1);
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}
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if ((mode = fcntl(tty->fd, F_GETFL)) == -1)
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fatal("fcntl");
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if (fcntl(tty->fd, F_SETFL, mode|O_NONBLOCK) == -1)
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fatal("fcntl");
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if ((tty->term = tty_find_term(tty->termname, tty->fd, cause)) == NULL)
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goto error;
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tty->in = buffer_create(BUFSIZ);
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tty->out = buffer_create(BUFSIZ);
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tty->attr = 0;
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tty->colr = 0x88;
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tty->flags = 0;
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if (tcgetattr(tty->fd, &tty->tio) != 0)
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fatal("tcgetattr failed");
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memcpy(&tio, &tty->tio, sizeof tio);
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tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|IUCLC|ISTRIP);
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tio.c_iflag |= IGNBRK;
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tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET|OLCUC);
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tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|ECHOKE|ECHOCTL|ISIG);
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tio.c_cc[VMIN] = 1;
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tio.c_cc[VTIME] = 0;
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if (tcsetattr(tty->fd, TCSANOW, &tio) != 0)
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fatal("tcsetattr failed");
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#ifdef TIOCFLUSH
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what = 0;
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if (ioctl(tty->fd, TIOCFLUSH, &what) != 0)
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fatal("ioctl(TIOCFLUSH)");
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#endif
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if (init_1string != NULL)
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tty_puts(tty, init_1string);
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if (init_2string != NULL)
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tty_puts(tty, init_2string);
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if (init_3string != NULL)
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tty_puts(tty, init_3string);
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if (enter_ca_mode != NULL)
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tty_puts(tty, enter_ca_mode);
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if (keypad_xmit != NULL)
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tty_puts(tty, keypad_xmit);
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if (ena_acs != NULL)
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tty_puts(tty, ena_acs);
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tty_puts(tty, clear_screen);
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tty_keys_init(tty);
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tty_fill_acs(tty);
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return (0);
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error:
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close(tty->fd);
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tty->fd = -1;
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return (-1);
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}
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void
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tty_close(struct tty *tty)
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{
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struct winsize ws;
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if (tty->fd == -1)
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return;
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/*
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* Skip any writing if the fd is invalid. Things like ssh -t can
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* easily leave us with a dead tty.
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*/
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if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1) {
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if (errno != EBADF && errno != ENXIO)
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fatal("ioctl(TIOCGWINSZ)");
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} else {
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if (tcsetattr(tty->fd, TCSANOW, &tty->tio) != 0)
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fatal("tcsetattr failed");
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tty_raw(tty, tparm(change_scroll_region, 0, ws.ws_row - 1));
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if (keypad_local != NULL)
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tty_raw(tty, keypad_local);
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if (exit_ca_mode != NULL)
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tty_raw(tty, exit_ca_mode);
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tty_raw(tty, clear_screen);
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if (cursor_normal != NULL)
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tty_raw(tty, cursor_normal);
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if (exit_attribute_mode != NULL)
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tty_raw(tty, exit_attribute_mode);
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}
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tty_free_term(tty->term);
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tty_keys_free(tty);
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close(tty->fd);
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tty->fd = -1;
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buffer_destroy(tty->in);
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buffer_destroy(tty->out);
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}
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void
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tty_free(struct tty *tty)
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{
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tty_close(tty);
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if (tty->path != NULL)
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xfree(tty->path);
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if (tty->termname != NULL)
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xfree(tty->termname);
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}
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struct tty_term *
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tty_find_term(char *name, int fd, char **cause)
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{
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struct tty_term *term;
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int error;
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TAILQ_FOREACH(term, &tty_terms, entry) {
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if (strcmp(term->name, name) == 0) {
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term->references++;
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return (term);
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}
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}
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term = xmalloc(sizeof *term);
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term->name = xstrdup(name);
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term->term = NULL;
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term->references = 1;
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TAILQ_INSERT_HEAD(&tty_terms, term, entry);
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if (setupterm(name, fd, &error) != OK) {
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switch (error) {
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case 0:
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xasprintf(cause, "can't use hardcopy terminal");
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break;
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case 1:
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xasprintf(cause, "missing or unsuitable terminal");
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break;
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case 2:
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xasprintf(cause, "can't find terminfo database");
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break;
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default:
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xasprintf(cause, "unknown error");
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break;
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}
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goto error;
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}
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term->term = cur_term;
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if (clear_screen == NULL) {
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xasprintf(cause, "clear_screen missing");
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goto error;
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}
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if (cursor_down == NULL) {
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xasprintf(cause, "cursor_down missing");
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goto error;
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}
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if (carriage_return == NULL) {
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xasprintf(cause, "carriage_return missing");
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goto error;
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}
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if (cursor_left == NULL) {
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xasprintf(cause, "cursor_left missing");
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goto error;
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}
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if (parm_up_cursor == NULL && cursor_up == NULL) {
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xasprintf(cause, "parm_up_cursor missing");
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goto error;
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}
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if (parm_down_cursor == NULL && cursor_down == NULL) {
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xasprintf(cause, "parm_down_cursor missing");
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goto error;
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}
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if (parm_right_cursor == NULL && cursor_right == NULL) {
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xasprintf(cause, "parm_right_cursor missing");
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goto error;
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}
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if (parm_left_cursor == NULL && cursor_left == NULL) {
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xasprintf(cause, "parm_left_cursor missing");
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goto error;
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}
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if (cursor_address == NULL) {
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xasprintf(cause, "cursor_address missing");
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goto error;
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}
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if (parm_insert_line == NULL && insert_line == NULL) {
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xasprintf(cause, "parm_insert_line missing");
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goto error;
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}
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if (parm_delete_line == NULL && delete_line == NULL) {
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xasprintf(cause, "parm_delete_line missing");
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goto error;
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}
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if (parm_ich == NULL && insert_character == NULL &&
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(enter_insert_mode == NULL || exit_insert_mode == NULL)) {
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xasprintf(cause, "parm_ich missing");
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goto error;
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}
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if (scroll_reverse == NULL) {
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xasprintf(cause, "scroll_reverse missing");
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goto error;
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}
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if (change_scroll_region == NULL) {
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xasprintf(cause, "change_scroll_region missing");
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goto error;
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}
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return (term);
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error:
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tty_free_term(term);
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return (NULL);
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}
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void
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tty_free_term(struct tty_term *term)
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{
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if (--term->references != 0)
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return;
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TAILQ_REMOVE(&tty_terms, term, entry);
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#ifdef __FreeBSD___
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/*
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* XXX XXX XXX FIXME FIXME
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* FreeBSD 6.2 crashes with a double-free somewhere under here.
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*/
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if (term->term != NULL)
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del_curterm(term->term);
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#endif
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xfree(term->name);
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xfree(term);
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}
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void
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tty_fill_acs(struct tty *tty)
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{
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char *ptr;
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memset(tty->acs, 0, sizeof tty->acs);
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if (acs_chars == NULL || (strlen(acs_chars) % 2) != 0)
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return;
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for (ptr = acs_chars; *ptr != '\0'; ptr += 2)
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tty->acs[(u_char) ptr[0]] = ptr[1];
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}
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u_char
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tty_get_acs(struct tty *tty, u_char ch)
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{
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if (tty->acs[ch] != '\0')
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return (tty->acs[ch]);
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return (ch);
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}
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const char *
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tty_strip(const char *s)
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{
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const char *ptr;
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static char buf[BUFSIZ];
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size_t len;
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/* Ignore strings with no padding. */
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if (strchr(s, '$') == NULL)
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return (s);
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len = 0;
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for (ptr = s; *ptr != '\0'; ptr++) {
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if (*ptr == '$' && *(ptr + 1) == '<') {
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while (*ptr != '\0' && *ptr != '>')
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ptr++;
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if (*ptr == '>')
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ptr++;
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}
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buf[len++] = *ptr;
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if (len == (sizeof buf) - 1)
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break;
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}
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buf[len] = '\0';
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return (buf);
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}
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void
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tty_raw(struct tty *tty, const char *s)
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{
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const char *t;
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t = tty_strip(s);
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write(tty->fd, t, strlen(t));
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}
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void
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tty_puts(struct tty *tty, const char *s)
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{
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const char *t;
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t = tty_strip(s);
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buffer_write(tty->out, t, strlen(t));
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}
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void
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tty_putc(struct tty *tty, char ch)
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{
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if (tty->attr & ATTR_CHARSET)
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ch = tty_get_acs(tty, ch);
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buffer_write8(tty->out, ch);
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}
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void
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tty_set_title(struct tty *tty, const char *title)
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{
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if (strstr(tty->termname, "xterm") == NULL &&
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strstr(tty->termname, "rxvt") == NULL &&
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strcmp(tty->termname, "screen") != 0)
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return;
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tty_puts(tty, "\033]0;");
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tty_puts(tty, title);
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tty_putc(tty, '\007');
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}
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void
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tty_vwrite(struct tty *tty, struct screen *s, int cmd, va_list ap)
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{
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char ch;
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u_int i, ua, ub;
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if (tty->flags & TTY_FREEZE)
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return;
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if (tty->term == NULL) /* XXX XXX */
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return;
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set_curterm(tty->term->term);
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switch (cmd) {
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case TTY_CHARACTER:
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ch = va_arg(ap, int);
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switch (ch) {
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case '\n': /* LF */
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tty_putc(tty, '\n');
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break;
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case '\r': /* CR */
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tty_puts(tty, carriage_return);
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break;
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case '\007': /* BEL */
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if (bell != NULL)
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tty_puts(tty, bell);
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break;
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case '\010': /* BS */
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tty_puts(tty, cursor_left);
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break;
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default:
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tty_putc(tty, ch);
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break;
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}
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break;
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case TTY_CURSORUP:
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ua = va_arg(ap, u_int);
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if (parm_up_cursor != NULL)
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tty_puts(tty, tparm(parm_up_cursor, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, cursor_up);
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}
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break;
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case TTY_CURSORDOWN:
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ua = va_arg(ap, u_int);
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if (parm_down_cursor != NULL)
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tty_puts(tty, tparm(parm_down_cursor, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, cursor_down);
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}
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break;
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case TTY_CURSORRIGHT:
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ua = va_arg(ap, u_int);
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if (parm_right_cursor != NULL)
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tty_puts(tty, tparm(parm_right_cursor, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, cursor_right);
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}
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break;
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case TTY_CURSORLEFT:
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ua = va_arg(ap, u_int);
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if (parm_left_cursor != NULL)
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tty_puts(tty, tparm(parm_left_cursor, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, cursor_left);
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}
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break;
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case TTY_CURSORMOVE:
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ua = va_arg(ap, u_int);
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ub = va_arg(ap, u_int);
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tty_puts(tty, tparm(cursor_address, ua, ub));
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break;
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case TTY_CLEARENDOFLINE:
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if (clr_eol != NULL)
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tty_puts(tty, clr_eol);
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else {
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tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
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for (i = s->cx; i < screen_size_x(s); i++)
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tty_putc(tty, ' ');
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tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
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}
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break;
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case TTY_CLEARSTARTOFLINE:
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if (clr_bol != NULL)
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tty_puts(tty, clr_bol);
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else {
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tty_puts(tty, tparm(cursor_address, s->cy, 0));
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for (i = 0; i < s->cx + 1; i++)
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tty_putc(tty, ' ');
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tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
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}
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break;
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case TTY_CLEARLINE:
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if (clr_eol != NULL) {
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tty_puts(tty, tparm(cursor_address, s->cy, 0));
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tty_puts(tty, clr_eol);
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tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
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} else {
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tty_puts(tty, tparm(cursor_address, s->cy, 0));
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for (i = 0; i < screen_size_x(s); i++)
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tty_putc(tty, ' ');
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tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
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}
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break;
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case TTY_INSERTLINE:
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ua = va_arg(ap, u_int);
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if (parm_insert_line != NULL)
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tty_puts(tty, tparm(parm_insert_line, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, insert_line);
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}
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break;
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case TTY_DELETELINE:
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ua = va_arg(ap, u_int);
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if (parm_delete_line != NULL)
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tty_puts(tty, tparm(parm_delete_line, ua));
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else {
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while (ua-- > 0)
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tty_puts(tty, delete_line);
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}
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break;
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case TTY_INSERTCHARACTER:
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ua = va_arg(ap, u_int);
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if (parm_ich != NULL)
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tty_puts(tty, tparm(parm_ich, ua));
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else if (insert_character != NULL) {
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while (ua-- > 0)
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tty_puts(tty, insert_character);
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|
} else if (enter_insert_mode != NULL) {
|
|
tty_puts(tty, enter_insert_mode);
|
|
while (ua-- > 0)
|
|
tty_putc(tty, ' ');
|
|
tty_puts(tty, exit_insert_mode);
|
|
tty_puts(tty, tparm(cursor_address, s->cy, s->cx));
|
|
}
|
|
break;
|
|
case TTY_DELETECHARACTER:
|
|
ua = va_arg(ap, u_int);
|
|
if (parm_dch != NULL)
|
|
tty_puts(tty, tparm(parm_dch, ua));
|
|
else if (delete_character != NULL) {
|
|
while (ua-- > 0)
|
|
tty_puts(tty, delete_character);
|
|
} else {
|
|
while (ua-- > 0)
|
|
tty_putc(tty, '\010');
|
|
}
|
|
break;
|
|
case TTY_CURSORON:
|
|
if (!(tty->flags & TTY_NOCURSOR) && cursor_normal != NULL)
|
|
tty_puts(tty, cursor_normal);
|
|
break;
|
|
case TTY_CURSOROFF:
|
|
if (cursor_invisible != NULL)
|
|
tty_puts(tty, cursor_invisible);
|
|
break;
|
|
case TTY_REVERSEINDEX:
|
|
tty_puts(tty, scroll_reverse);
|
|
break;
|
|
case TTY_SCROLLREGION:
|
|
ua = va_arg(ap, u_int);
|
|
ub = va_arg(ap, u_int);
|
|
tty_puts(tty, tparm(change_scroll_region, ua, ub));
|
|
break;
|
|
#if 0
|
|
case TTY_INSERTON:
|
|
if (enter_insert_mode != NULL)
|
|
tty_puts(tty, enter_insert_mode);
|
|
break;
|
|
case TTY_INSERTOFF:
|
|
if (exit_insert_mode != NULL)
|
|
tty_puts(tty, exit_insert_mode);
|
|
break;
|
|
case TTY_KCURSOROFF:
|
|
t = tigetstr("CE");
|
|
if (t != (char *) 0 && t != (char *) -1)
|
|
tty_puts(tty, t);
|
|
break;
|
|
case TTY_KCURSORON:
|
|
t = tigetstr("CS");
|
|
if (t != (char *) 0 && t != (char *) -1)
|
|
tty_puts(tty, t);
|
|
break;
|
|
case TTY_KKEYPADOFF:
|
|
if (keypad_local != NULL)
|
|
tty_puts(tty, keypad_local);
|
|
break;
|
|
case TTY_KKEYPADON:
|
|
if (keypad_xmit != NULL)
|
|
tty_puts(tty, keypad_xmit);
|
|
break;
|
|
#endif
|
|
case TTY_MOUSEOFF:
|
|
if (key_mouse != NULL)
|
|
tty_puts(tty, "\033[?1000l");
|
|
break;
|
|
case TTY_MOUSEON:
|
|
if (key_mouse != NULL)
|
|
tty_puts(tty, "\033[?1000h");
|
|
break;
|
|
case TTY_ATTRIBUTES:
|
|
ua = va_arg(ap, u_int);
|
|
ub = va_arg(ap, u_int);
|
|
tty_attributes(tty, ua, ub);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
tty_attributes(struct tty *tty, u_char attr, u_char colr)
|
|
{
|
|
u_char fg, bg;
|
|
|
|
if (attr == tty->attr && colr == tty->colr)
|
|
return;
|
|
|
|
/* If any bits are being cleared, reset everything. */
|
|
if (tty->attr & ~attr) {
|
|
if ((tty->attr & ATTR_CHARSET) &&
|
|
exit_alt_charset_mode != NULL)
|
|
tty_puts(tty, exit_alt_charset_mode);
|
|
tty_puts(tty, exit_attribute_mode);
|
|
tty->colr = 0x88;
|
|
tty->attr = 0;
|
|
}
|
|
|
|
/* Filter out bits already set. */
|
|
attr &= ~tty->attr;
|
|
tty->attr |= attr;
|
|
|
|
if ((attr & ATTR_BRIGHT) && enter_bold_mode != NULL)
|
|
tty_puts(tty, enter_bold_mode);
|
|
if ((attr & ATTR_DIM) && enter_dim_mode != NULL)
|
|
tty_puts(tty, enter_dim_mode);
|
|
if ((attr & ATTR_ITALICS) && enter_standout_mode != NULL)
|
|
tty_puts(tty, enter_standout_mode);
|
|
if ((attr & ATTR_UNDERSCORE) && enter_underline_mode != NULL)
|
|
tty_puts(tty, enter_underline_mode);
|
|
if ((attr & ATTR_BLINK) && enter_blink_mode != NULL)
|
|
tty_puts(tty, enter_blink_mode);
|
|
if ((attr & ATTR_REVERSE) && enter_reverse_mode != NULL)
|
|
tty_puts(tty, enter_reverse_mode);
|
|
if ((attr & ATTR_HIDDEN) && enter_secure_mode != NULL)
|
|
tty_puts(tty, enter_secure_mode);
|
|
if ((attr & ATTR_CHARSET) && enter_alt_charset_mode != NULL)
|
|
tty_puts(tty, enter_alt_charset_mode);
|
|
|
|
fg = (colr >> 4) & 0xf;
|
|
if (fg != ((tty->colr >> 4) & 0xf)) {
|
|
if (tigetflag("AX") != TRUE && fg == 8)
|
|
fg = 7;
|
|
|
|
if (fg == 8)
|
|
tty_puts(tty, "\033[39m");
|
|
else if (set_a_foreground != NULL)
|
|
tty_puts(tty, tparm(set_a_foreground, fg));
|
|
}
|
|
|
|
bg = colr & 0xf;
|
|
if (bg != (tty->colr & 0xf)) {
|
|
if (tigetflag("AX") != TRUE && bg == 8)
|
|
bg = 0;
|
|
|
|
if (bg == 8)
|
|
tty_puts(tty, "\033[49m");
|
|
else if (set_a_background != NULL)
|
|
tty_puts(tty, tparm(set_a_background, bg));
|
|
}
|
|
|
|
tty->colr = colr;
|
|
}
|