/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* In general, curses should leave tty hardware settings alone (speed, parity,
* word size). This is most easily done in BSD by using TCSASOFT on all
* tcsetattr calls. On other systems, it would be better to get and restore
* those attributes at each change, or at least when stopped and restarted.
* See also the comments in getterm().
*/
#ifndef TCSASOFT
#define TCSASOFT 0
#endif
/*
* _cursesi_gettmode --
* Do the terminal type initialisation for the tty attached to the
* given screen.
*/
int
_cursesi_gettmode(SCREEN *screen)
{
screen->useraw = 0;
if (tcgetattr(fileno(screen->infd), &screen->orig_termios)) {
/* if the input fd is not a tty try the output */
if (tcgetattr(fileno(screen->outfd), &screen->orig_termios)) {
/* not a tty ... we will disable tty related stuff */
screen->notty = TRUE;
__GT = 0;
__NONL = 0;
return OK;
}
}
screen->GT = 0; /* historical. was used before we wired OXTABS off */
screen->NONL = (screen->baset.c_oflag & ONLCR) == 0;
/*
* XXX
* System V and SMI systems overload VMIN and VTIME, such that
* VMIN is the same as the VEOF element, and VTIME is the same
* as the VEOL element. This means that, if VEOF was ^D, the
* default VMIN is 4. Majorly stupid.
*/
screen->cbreakt = screen->baset;
screen->cbreakt.c_lflag &= ~(ECHO | ECHONL | ICANON);
screen->cbreakt.c_cc[VMIN] = 1;
screen->cbreakt.c_cc[VTIME] = 0;
#if TCSASOFT == 0
/*
* In general, curses should leave hardware-related settings alone.
* This includes parity and word size. Older versions set the tty
* to 8 bits, no parity in raw(), but this is considered to be an
* artifact of the old tty interface. If it's desired to change
* parity and word size, the TCSASOFT bit has to be removed from the
* calls that switch to/from "raw" mode.
*/
screen->rawt.c_iflag &= ~ISTRIP;
screen->rawt.c_cflag &= ~(CSIZE | PARENB);
screen->rawt.c_cflag |= CS8;
#endif
/*
* raw --
* Put the terminal into raw mode
*/
int
raw(void)
{
__CTRACE(__CTRACE_MISC, "raw()\n");
/* Check if we need to restart ... */
if (_cursesi_screen->endwin)
__restartwin();
/*
* noraw --
* Put the terminal into cooked mode
*/
int
noraw(void)
{
__CTRACE(__CTRACE_MISC, "noraw()\n");
/* Check if we need to restart ... */
if (_cursesi_screen->endwin)
__restartwin();
/*
* cbreak --
* Enable cbreak mode
*/
int
cbreak(void)
{
__CTRACE(__CTRACE_MISC, "cbreak()\n");
/* Check if we need to restart ... */
if (_cursesi_screen->endwin)
__restartwin();
/*
* nocbreak --
* Disable cbreak mode
*/
int
nocbreak(void)
{
__CTRACE(__CTRACE_MISC, "nocbreak()\n");
/* Check if we need to restart ... */
if (_cursesi_screen->endwin)
__restartwin();
__rawmode = 0;
if (_cursesi_screen->notty == TRUE)
return OK;
/* if we were in halfdelay mode then nuke the timeout */
if ((stdscr->flags & __HALFDELAY) &&
(__notimeout() == ERR))
return ERR;
/*
* halfdelay --
* Put the terminal into cbreak mode with the specified timeout.
*
*/
int
halfdelay(int duration)
{
if ((duration < 1) || (duration > 255))
return ERR;
int
__timeout(int delay)
{
__CTRACE(__CTRACE_MISC, "__timeout()\n");
/* Check if we need to restart ... */
if (_cursesi_screen->endwin)
__restartwin();
#ifdef BSD
/*
* Some C libraries default to a 1K buffer when talking to a tty.
* With a larger screen, especially across a network, we'd like
* to get it to all flush in a single write. Make it twice as big
* as just the characters (so that we have room for cursor motions
* and attribute information) but no more than 8K.
*
* However, setvbuf may only be used after opening a stream and
* before any operations have been performed on it.
* This means we cannot work portably if an application wants
* to stop curses and start curses after a resize.
* Curses resizing is not standard, and thus not strictly portable
* even though all curses today support it.
* The BSD systems do not suffer from this limitation on setvbuf.
*/
if (screen->stdbuf == NULL) {
screen->len = LINES * COLS * 2;
if (screen->len > 8192)
screen->len = 8192;
if ((screen->stdbuf = malloc(screen->len)) == NULL)
screen->len = 0;
}
(void)setvbuf(screen->outfd, screen->stdbuf, _IOFBF, screen->len);
#endif
int
endwin(void)
{
__CTRACE(__CTRACE_MISC, "endwin\n");
return __stopwin();
}
bool
isendwin(void)
{
return _cursesi_screen->endwin ? TRUE : FALSE;
}
int
flushinp(void)
{
(void)fpurge(_cursesi_screen->infd);
return OK;
}
/*
* The following routines, savetty and resetty are completely useless and
* are left in only as stubs. If people actually use them they will almost
* certainly screw up the state of the world.
*/
/*static struct termios savedtty;*/
int
savetty(void)
{
