NetBSD/lib/libcurses/tty.c

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1993-08-07 09:51:11 +04:00
/*-
* Copyright (c) 1992 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
/*static char sccsid[] = "from: @(#)tty.c 5.2 (Berkeley) 8/31/92";*/
static char rcsid[] = "$Id: tty.c,v 1.1 1993/08/07 05:51:16 mycroft Exp $";
#endif /* not lint */
/*
* Terminal initialization routines.
*/
#include <sys/ioctl.h>
#include <curses.h>
#include <termios.h>
#include <unistd.h>
struct termios newtermio, origtermio;
static struct termios norawt, rawt;
static int useraw;
/*
* gettmode --
* Do terminal type initialization.
*/
int
gettmode()
{
if (tcgetattr(STDIN_FILENO, &origtermio))
return (OK);
GT = (origtermio.c_oflag & OXTABS) == 0;
NONL = (origtermio.c_oflag & ONLCR) == 0;
norawt = origtermio;
norawt.c_oflag &= ~OXTABS;
rawt = norawt;
cfmakeraw(&rawt);
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt) ? ERR : OK);
}
int
raw()
{
useraw = __pfast = __rawmode = 1;
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
}
int
noraw()
{
useraw = __pfast = __rawmode = 0;
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
cbreak()
{
rawt.c_lflag &= ~ICANON;
norawt.c_lflag &= ~ICANON;
__rawmode = 1;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
nocbreak()
{
rawt.c_lflag |= ICANON;
norawt.c_lflag |= ICANON;
__rawmode = 0;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
echo()
{
rawt.c_lflag |= ECHO;
norawt.c_lflag |= ECHO;
__echoit = 1;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
noecho()
{
rawt.c_lflag &= ~ECHO;
norawt.c_lflag &= ~ECHO;
__echoit = 0;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
nl()
{
rawt.c_iflag |= ICRNL;
rawt.c_oflag |= ONLCR;
norawt.c_iflag |= ICRNL;
norawt.c_oflag |= ONLCR;
__pfast = __rawmode;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
nonl()
{
rawt.c_iflag &= ~ICRNL;
rawt.c_oflag &= ~ONLCR;
norawt.c_iflag &= ~ICRNL;
norawt.c_oflag &= ~ONLCR;
__pfast = 1;
if (useraw)
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt));
else
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt));
}
int
endwin()
{
if (curscr) {
if (curscr->_flags & _STANDOUT) {
tputs(SE, 0, __cputchar);
curscr->_flags &= ~_STANDOUT;
}
__endwin = 1;
}
(void)tputs(VE, 0, __cputchar);
(void)tputs(TE, 0, __cputchar);
(void)fflush(stdout);
__echoit = origtermio.c_lflag & ECHO;
__rawmode = origtermio.c_lflag & ICANON;
__pfast = origtermio.c_iflag & ICRNL ? __rawmode : 1;
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &origtermio));
}
/*
* 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()
{
return (tcgetattr(STDIN_FILENO, &savedtty));
}
int
resetty()
{
return (tcsetattr(STDIN_FILENO, TCSADRAIN, &savedtty));
}