Net2/usr/src/lib/libcurses/cr_tty.c
/*
* Copyright (c) 1981 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[] = "@(#)cr_tty.c 5.8 (Berkeley) 6/1/90";
#endif /* not lint */
/*
* Terminal initialization routines.
*
*/
# include "curses.ext"
static bool *sflags[] = {
&AM, &BS, &DA, &DB, &EO, &HC, &HZ, &IN, &MI,
&MS, &NC, &NS, &OS, &UL, &XB, &XN, &XT, &XS,
&XX
};
static char *_PC,
**sstrs[] = {
&AL, &BC, &BT, &CD, &CE, &CL, &CM, &CR, &CS,
&DC, &DL, &DM, &DO, &ED, &EI, &K0, &K1, &K2,
&K3, &K4, &K5, &K6, &K7, &K8, &K9, &HO, &IC,
&IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU,
&LL, &MA, &ND, &NL, &_PC, &RC, &SC, &SE, &SF,
&SO, &SR, &TA, &TE, &TI, &UC, &UE, &UP, &US,
&VB, &VS, &VE, &AL_PARM, &DL_PARM, &UP_PARM,
&DOWN_PARM, &LEFT_PARM, &RIGHT_PARM,
};
extern char *tgoto();
char _tspace[2048]; /* Space for capability strings */
static char *aoftspace; /* Address of _tspace for relocation */
static int destcol, destline;
/*
* This routine does terminal type initialization routines, and
* calculation of flags at entry. It is almost entirely stolen from
* Bill Joy's ex version 2.6.
*/
short ospeed = -1;
gettmode() {
if (ioctl(_tty_ch, TIOCGETP, &_tty) < 0)
return;
savetty();
if (ioctl(_tty_ch, TIOCSETP, &_tty) < 0)
_tty.sg_flags = _res_flg;
ospeed = _tty.sg_ospeed;
_res_flg = _tty.sg_flags;
UPPERCASE = (_tty.sg_flags & LCASE) != 0;
GT = ((_tty.sg_flags & XTABS) == 0);
NONL = ((_tty.sg_flags & CRMOD) == 0);
_tty.sg_flags &= ~XTABS;
ioctl(_tty_ch, TIOCSETP, &_tty);
# ifdef DEBUG
fprintf(outf, "GETTMODE: UPPERCASE = %s\n", UPPERCASE ? "TRUE":"FALSE");
fprintf(outf, "GETTMODE: GT = %s\n", GT ? "TRUE" : "FALSE");
fprintf(outf, "GETTMODE: NONL = %s\n", NONL ? "TRUE" : "FALSE");
fprintf(outf, "GETTMODE: ospeed = %d\n", ospeed);
# endif
}
setterm(type)
reg char *type; {
reg int unknown;
static char genbuf[1024];
# ifdef TIOCGWINSZ
struct winsize win;
# endif
# ifdef DEBUG
fprintf(outf, "SETTERM(\"%s\")\n", type);
fprintf(outf, "SETTERM: LINES = %d, COLS = %d\n", LINES, COLS);
# endif
if (type[0] == '\0')
type = "xx";
unknown = FALSE;
if (tgetent(genbuf, type) != 1) {
unknown++;
strcpy(genbuf, "xx|dumb:");
}
# ifdef DEBUG
fprintf(outf, "SETTERM: tty = %s\n", type);
# endif
# ifdef TIOCGWINSZ
if (ioctl(_tty_ch, TIOCGWINSZ, &win) >= 0) {
if (LINES == 0)
LINES = win.ws_row;
if (COLS == 0)
COLS = win.ws_col;
}
# endif
if (LINES == 0)
LINES = tgetnum("li");
if (LINES <= 5)
LINES = 24;
if (COLS == 0)
COLS = tgetnum("co");
if (COLS <= 4)
COLS = 80;
# ifdef DEBUG
fprintf(outf, "SETTERM: LINES = %d, COLS = %d\n", LINES, COLS);
# endif
aoftspace = _tspace;
zap(); /* get terminal description */
/*
* Handle funny termcap capabilities
*/
if (CS && SC && RC) AL=DL="";
if (AL_PARM && AL==NULL) AL="";
if (DL_PARM && DL==NULL) DL="";
if (IC && IM==NULL) IM="";
if (IC && EI==NULL) EI="";
if (!GT) BT=NULL; /* If we can't tab, we can't backtab either */
if (tgoto(CM, destcol, destline)[0] == 'O')
CA = FALSE, CM = 0;
else
CA = TRUE;
PC = _PC ? _PC[0] : FALSE;
aoftspace = _tspace;
{
/* xtype should be the same size as genbuf for longname(). */
static char xtype[1024];
(void)strcpy(xtype,type);
strncpy(ttytype, longname(genbuf, xtype), sizeof(ttytype) - 1);
}
ttytype[sizeof(ttytype) - 1] = '\0';
if (unknown)
return ERR;
return OK;
}
/*
* This routine gets all the terminal flags from the termcap database
*/
zap()
{
register char *namp;
register bool **fp;
register char ***sp;
#ifdef DEBUG
register char *cp;
#endif
extern char *tgetstr();
namp = "ambsdadbeohchzinmimsncnsosulxbxnxtxsxx";
fp = sflags;
do {
*(*fp++) = tgetflag(namp);
#ifdef DEBUG
fprintf(outf, "%2.2s = %s\n", namp, *fp[-1] ? "TRUE" : "FALSE");
#endif
namp += 2;
} while (*namp);
namp = "albcbtcdceclcmcrcsdcdldmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmandnlpcrcscsesfsosrtatetiucueupusvbvsveALDLUPDOLERI";
sp = sstrs;
do {
*(*sp++) = tgetstr(namp, &aoftspace);
#ifdef DEBUG
fprintf(outf, "%2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
if (*sp[-1] != NULL) {
for (cp = *sp[-1]; *cp; cp++)
fprintf(outf, "%s", unctrl(*cp));
fprintf(outf, "\"\n");
}
#endif
namp += 2;
} while (*namp);
if (XS)
SO = SE = NULL;
else {
if (tgetnum("sg") > 0)
SO = NULL;
if (tgetnum("ug") > 0)
US = NULL;
if (!SO && US) {
SO = US;
SE = UE;
}
}
}
/*
* return a capability from termcap
*/
char *
getcap(name)
char *name;
{
char *tgetstr();
return tgetstr(name, &aoftspace);
}