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ex_tty.c
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C/C++ Source or Header
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1980-02-17
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2KB
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121 lines
/* Copyright (c) 1979 Regents of the University of California */
#include "ex.h"
#include "ex_tty.h"
/*
* Terminal type initialization routines,
* and calculation of flags at entry or after
* a shell escape which may change them.
*/
short ospeed = -1;
gettmode()
{
if (gtty(1, &tty) < 0)
return;
if (ospeed != tty.sg_ospeed)
value(SLOWOPEN) = tty.sg_ospeed < B1200;
ospeed = tty.sg_ospeed;
normf = tty.sg_flags;
UPPERCASE = (tty.sg_flags & LCASE) != 0;
GT = (tty.sg_flags & XTABS) != XTABS;
NONL = (tty.sg_flags & CRMOD) == 0;
}
char *xPC;
char **sstrs[] = {
&AL, &BC, &CD, &CE, &CL, &CM, &DC, &DL, &DM, &DO, &ED, &EI, &HO,
&IC, &IM, &IP, &LL, &MA, &ND, &xPC, &SE, &SF, &SO, &SR, &TA, &UP,
&VB, &VS, &VE
};
bool *sflags[] = {
&AM, &BS, &DA, &DB, &EO, &HZ, &IN, &MI, &NC, &OS, &UL, &XN
};
setterm(type)
char *type;
{
char *cgoto();
register int unknown, i;
register int l;
if (type[0] == 0)
type = "xx";
unknown = 0;
if (tgetent(genbuf, type) != 1) {
unknown++;
CP(genbuf, "xx|dumb:");
}
i = LINES = tgetnum("li");
if (LINES <= 5)
LINES = 24;
if (LINES > 48)
LINES = 48;
l = LINES;
if (ospeed < B1200)
l /= 2;
else if (ospeed < B2400)
l = (l * 2) / 3;
options[WINDOW].ovalue = options[WINDOW].odefault = l - 1;
options[SCROLL].ovalue = options[SCROLL].odefault = l / 2;
COLUMNS = tgetnum("co");
if (COLUMNS <= 20)
COLUMNS = 1000;
aoftspace = tspace;
zap();
if (cgoto()[0] == 'O')
CA = 0, CM = 0;
else
CA = 1;
PC = xPC ? xPC[0] : 0;
aoftspace = tspace;
CP(ttytype, longname(genbuf, type));
if (i <= 0)
LINES = 2;
termreset();
value(REDRAW) = AL && DL;
value(OPTIMIZE) = !CA && !GT;
if (unknown)
serror("%s: Unknown terminal type", type);
}
zap()
{
register char *namp;
register bool **fp;
register char ***sp;
namp = "ambsdadbeohzinmincosulxn";
fp = sflags;
do {
*(*fp++) = tgetflag(namp);
namp += 2;
} while (*namp);
namp = "albccdceclcmdcdldmdoedeihoicimipllmandpcsesfsosrtaupvbvsve";
sp = sstrs;
do {
*(*sp++) = tgetstr(namp, &aoftspace);
namp += 2;
} while (*namp);
}
char *
longname(bp, def)
register char *bp;
char *def;
{
register char *cp;
while (*bp && *bp != ':' && *bp != '|')
bp++;
if (*bp == '|') {
bp++;
cp = bp;
while (*cp && *cp != ':' && *cp != '|')
cp++;
*cp = 0;
return (bp);
}
return (def);
}