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e61715de39
a name clash with the library functions of the same name (in libncurses). This problem was masked when building tset shared (the local symbols had precedence), but caused tset to core dump when it was built -static.
325 lines
8.0 KiB
C
325 lines
8.0 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)set.c 8.2 (Berkeley) 2/28/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <termios.h>
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#include <unistd.h>
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#include <stdio.h>
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#include "extern.h"
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#define CHK(val, dft) (val <= 0 ? dft : val)
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int set_tabs __P((void));
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/*
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* Reset the terminal mode bits to a sensible state. Very useful after
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* a child program dies in raw mode.
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*/
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void
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reset_mode()
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{
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tcgetattr(STDERR_FILENO, &mode);
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#if defined(VDISCARD) && defined(CDISCARD)
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mode.c_cc[VDISCARD] = CHK(mode.c_cc[VDISCARD], CDISCARD);
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#endif
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mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CEOF);
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mode.c_cc[VERASE] = CHK(mode.c_cc[VERASE], CERASE);
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#if defined(VFLUSH) && defined(CFLUSH)
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mode.c_cc[VFLUSH] = CHK(mode.c_cc[VFLUSH], CFLUSH);
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#endif
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mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CINTR);
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mode.c_cc[VKILL] = CHK(mode.c_cc[VKILL], CKILL);
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#if defined(VLNEXT) && defined(CLNEXT)
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mode.c_cc[VLNEXT] = CHK(mode.c_cc[VLNEXT], CLNEXT);
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#endif
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mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CQUIT);
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#if defined(VREPRINT) && defined(CRPRNT)
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mode.c_cc[VREPRINT] = CHK(mode.c_cc[VREPRINT], CRPRNT);
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#endif
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mode.c_cc[VSTART] = CHK(mode.c_cc[VSTART], CSTART);
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mode.c_cc[VSTOP] = CHK(mode.c_cc[VSTOP], CSTOP);
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mode.c_cc[VSUSP] = CHK(mode.c_cc[VSUSP], CSUSP);
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#if defined(VWERASE) && defined(CWERASE)
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mode.c_cc[VWERASE] = CHK(mode.c_cc[VWERASE], CWERASE);
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#endif
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mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | ISTRIP | INLCR | IGNCR
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#ifdef IUCLC
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| IUCLC
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#endif
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#ifdef IXANY
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| IXANY
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#endif
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| IXOFF);
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mode.c_iflag |= (BRKINT | IGNPAR | ICRNL | IXON
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#ifdef IMAXBEL
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| IMAXBEL
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#endif
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);
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mode.c_oflag &= ~(0
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#ifdef OLCUC
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| OLCUC
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#endif
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#ifdef OCRNL
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| OCRNL
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#endif
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#ifdef ONOCR
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| ONOCR
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#endif
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#ifdef ONLRET
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| ONLRET
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#endif
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#ifdef OFILL
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| OFILL
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#endif
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#ifdef OFDEL
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| OFDEL
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#endif
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#ifdef NLDLY
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| NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY
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#endif
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);
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mode.c_oflag |= (OPOST
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#ifdef ONLCR
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| ONLCR
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#endif
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);
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mode.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | CLOCAL);
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mode.c_cflag |= (CS8 | CREAD);
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mode.c_lflag &= ~(ECHONL | NOFLSH | TOSTOP
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#ifdef ECHOPTR
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| ECHOPRT
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#endif
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#ifdef XCASE
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| XCASE
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#endif
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);
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mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOE | ECHOK
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#ifdef ECHOCTL
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| ECHOCTL
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#endif
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#ifdef ECHOKE
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| ECHOKE
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#endif
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);
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tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
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}
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/*
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* Determine the erase, interrupt, and kill characters from the termcap
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* entry and command line and update their values in 'mode'.
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*/
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void
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set_control_chars()
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{
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char *bp, *p, bs_char, buf[1024];
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bp = buf;
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p = tgetstr("kb", &bp);
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if (p == NULL || p[1] != '\0')
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p = tgetstr("bc", &bp);
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if (p != NULL && p[1] == '\0')
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bs_char = p[0];
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else if (tgetflag("bs"))
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bs_char = CTRL('h');
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else
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bs_char = 0;
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if (erasech == 0 && bs_char != 0 && !tgetflag("os"))
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erasech = -1;
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if (erasech < 0)
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erasech = (bs_char != 0) ? bs_char : CTRL('h');
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if (mode.c_cc[VERASE] == 0 || erasech != 0)
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mode.c_cc[VERASE] = erasech ? erasech : CERASE;
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if (mode.c_cc[VINTR] == 0 || intrchar != 0)
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mode.c_cc[VINTR] = intrchar ? intrchar : CINTR;
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if (mode.c_cc[VKILL] == 0 || killch != 0)
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mode.c_cc[VKILL] = killch ? killch : CKILL;
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}
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/*
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* Set up various conversions in 'mode', including parity, tabs, returns,
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* echo, and case, according to the termcap entry. If the program we're
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* running was named with a leading upper-case character, map external
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* uppercase to internal lowercase.
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*/
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void
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set_conversions(usingupper)
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int usingupper;
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{
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if (tgetflag("UC") || usingupper) {
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#ifdef IUCLC
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mode.c_iflag |= IUCLC;
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mode.c_oflag |= OLCUC;
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#endif
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} else if (tgetflag("LC")) {
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#ifdef IUCLC
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mode.c_iflag &= ~IUCLC;
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mode.c_oflag &= ~OLCUC;
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#endif
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}
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mode.c_iflag &= ~(PARMRK | INPCK);
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mode.c_lflag |= ICANON;
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if (tgetflag("EP")) {
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mode.c_cflag |= PARENB;
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mode.c_cflag &= ~PARODD;
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}
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if (tgetflag("OP")) {
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mode.c_cflag |= PARENB;
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mode.c_cflag |= PARODD;
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}
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#ifdef ONLCR
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mode.c_oflag |= ONLCR;
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#endif
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mode.c_iflag |= ICRNL;
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mode.c_lflag |= ECHO;
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mode.c_oflag |= OXTABS;
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if (tgetflag("NL")) { /* Newline, not linefeed. */
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#ifdef ONLCR
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mode.c_oflag &= ~ONLCR;
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#endif
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mode.c_iflag &= ~ICRNL;
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}
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if (tgetflag("HD")) /* Half duplex. */
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mode.c_lflag &= ~ECHO;
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if (tgetflag("pt")) /* Print tabs. */
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mode.c_oflag &= ~OXTABS;
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mode.c_lflag |= (ECHOE | ECHOK);
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}
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/* Output startup string. */
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void
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set_init()
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{
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char *bp, buf[1024];
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int settle;
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bp = buf;
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if (tgetstr("pc", &bp) != 0) /* Get/set pad character. */
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PC = buf[0];
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#ifdef TAB3
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if (oldmode.c_oflag & (TAB3 | ONLCR | OCRNL | ONLRET)) {
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oldmode.c_oflag &= (TAB3 | ONLCR | OCRNL | ONLRET);
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tcsetattr(STDERR_FILENO, TCSADRAIN, &oldmode);
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}
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#endif
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settle = set_tabs();
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if (isreset) {
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bp = buf;
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if (tgetstr("rs", &bp) != 0 || tgetstr("is", &bp) != 0) {
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tputs(buf, 0, outc);
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settle = 1;
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}
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bp = buf;
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if (tgetstr("rf", &bp) != 0 || tgetstr("if", &bp) != 0) {
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cat(buf);
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settle = 1;
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}
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}
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if (settle) {
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(void)putc('\r', stderr);
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(void)fflush(stderr);
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(void)sleep(1); /* Settle the terminal. */
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}
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}
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/*
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* Set the hardware tabs on the terminal, using the ct (clear all tabs),
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* st (set one tab) and ch (horizontal cursor addressing) capabilities.
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* This is done before if and is, so they can patch in case we blow this.
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* Return nonzero if we set any tab stops, zero if not.
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*/
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int
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set_tabs()
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{
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int c;
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char *capsp, *clear_tabs;
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char *set_column, *set_pos, *Set_tab, *tg_out;
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char caps[1024];
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capsp = caps;
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Set_tab = tgetstr("st", &capsp);
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if (Set_tab && (clear_tabs = tgetstr("ct", &capsp))) {
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(void)putc('\r', stderr); /* Force to left margin. */
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tputs(clear_tabs, 0, outc);
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}
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set_column = tgetstr("ch", &capsp);
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set_pos = set_column ? NULL : tgetstr("cm", &capsp);
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if (Set_tab) {
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for (c = 8; c < Columns; c += 8) {
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/*
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* Get to the right column. "OOPS" is returned by
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* tgoto() if it can't do the job. (*snarl*)
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*/
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tg_out = "OOPS";
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if (set_column)
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tg_out = tgoto(set_column, 0, c);
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if (*tg_out == 'O' && set_pos)
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tg_out = tgoto(set_pos, c, Lines - 1);
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if (*tg_out != 'O')
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tputs(tg_out, 1, outc);
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else
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(void)fprintf(stderr, "%s", " ");
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/* Set the tab. */
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tputs(Set_tab, 0, outc);
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}
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putc('\r', stderr);
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return (1);
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}
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return (0);
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}
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