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/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#if !defined(lint) && defined(DOSCCS)
static char *sccsid = "@(#)ex_set.c 7.4 (Berkeley) 6/7/85";
#endif
#include "ex.h"
#include "ex_temp.h"
#include "ex_tty.h"
/*
* Set command.
*/
char optname[ONMSZ];
set()
{
register char *cp;
register struct option *op;
register int c;
bool no;
extern short o_speed;
setnoaddr();
if (skipend()) {
if (peekchar() != EOF)
ignchar();
propts();
return;
}
do {
cp = optname;
do {
if (cp < &optname[ONMSZ - 2])
*cp++ = getchar();
} while (isalnum(peekchar()));
*cp = 0;
cp = optname;
if (eq("all", cp)) {
if (inopen)
pofix();
prall();
goto next;
}
no = 0;
if (cp[0] == 'n' && cp[1] == 'o') {
cp += 2;
no++;
}
/* Implement w300, w1200, and w9600 specially */
if (eq(cp, "w300")) {
if (o_speed >= B1200) {
dontset:
ignore(getchar()); /* = */
ignore(getnum()); /* value */
continue;
}
cp = "window";
} else if (eq(cp, "w1200")) {
if (o_speed < B1200 || o_speed >= B2400)
goto dontset;
cp = "window";
} else if (eq(cp, "w9600")) {
if (o_speed < B2400)
goto dontset;
cp = "window";
}
for (op = options; op < &options[NOPTS]; op++)
if (eq(op->oname, cp) || op->oabbrev && eq(op->oabbrev, cp))
break;
if (op->oname == 0)
serror("%s: No such option@- 'set all' gives all option values", cp);
c = skipwh();
if (peekchar() == '?') {
ignchar();
printone:
propt(op);
noonl();
goto next;
}
if (op->otype == ONOFF) {
op->ovalue = 1 - no;
if (op == &options[PROMPT])
oprompt = 1 - no;
goto next;
}
if (no)
serror("Option %s is not a toggle", op->oname);
if (c != 0 || setend())
goto printone;
if (getchar() != '=')
serror("Missing =@in assignment to option %s", op->oname);
switch (op->otype) {
case NUMERIC:
if (!isdigit(peekchar()))
error("Digits required@after =");
op->ovalue = getnum();
if (value(TABSTOP) <= 0)
value(TABSTOP) = TABS;
if (value(HARDTABS) <= 0)
value(HARDTABS) = TABS;
if (op == &options[WINDOW]) {
if (value(WINDOW) >= LINES)
value(WINDOW) = LINES-1;
vsetsiz(value(WINDOW));
}
break;
case STRING:
case OTERM:
cp = optname;
while (!setend()) {
if (cp >= &optname[ONMSZ])
error("String too long@in option assignment");
/* adb change: allow whitepace in strings */
if( (*cp = getchar()) == '\\')
if( peekchar() != EOF)
*cp = getchar();
cp++;
}
*cp = 0;
if (op->otype == OTERM) {
/*
* At first glance it seems like we shouldn't care if the terminal type
* is changed inside visual mode, as long as we assume the screen is
* a mess and redraw it. However, it's a much harder problem than that.
* If you happen to change from 1 crt to another that both have the same
* size screen, it's OK. But if the screen size if different, the stuff
* that gets initialized in vop() will be wrong. This could be overcome
* by redoing the initialization, e.g. making the first 90% of vop into
* a subroutine. However, the most useful case is where you forgot to do
* a setenv before you went into the editor and it thinks you're on a dumb
* terminal. Ex treats this like hardcopy and goes into HARDOPEN mode.
* This loses because the first part of vop calls oop in this case.
* The problem is so hard I gave up. I'm not saying it can't be done,
* but I am saying it probably isn't worth the effort.
*/
if (inopen)
error("Can't change type of terminal from within open/visual");
setterm(optname);
} else {
CP(op->osvalue, optname);
op->odefault = 1;
}
break;
}
next:
flush();
} while (!skipend());
eol();
}
setend()
{
return (iswhite(peekchar()) || endcmd(peekchar()));
}
prall()
{
register int incr = (NOPTS + 2) / 3;
register int rows = incr;
register struct option *op = options;
for (; rows; rows--, op++) {
propt(op);
tab(24);
propt(&op[incr]);
if (&op[2*incr] < &options[NOPTS]) {
tab(56);
propt(&op[2 * incr]);
}
putNFL();
}
}
propts()
{
register struct option *op;
for (op = options; op < &options[NOPTS]; op++) {
#ifdef V6
if (op == &options[TERM])
#else
if (op == &options[TTYTYPE])
#endif
continue;
switch (op->otype) {
case ONOFF:
case NUMERIC:
if (op->ovalue == op->odefault)
continue;
break;
case STRING:
if (op->odefault == 0)
continue;
break;
}
propt(op);
putchar(' ');
}
noonl();
flush();
}
propt(op)
register struct option *op;
{
register char *name;
name = op->oname;
switch (op->otype) {
case ONOFF:
printf("%s%s", op->ovalue ? "" : "no", name);
break;
case NUMERIC:
printf("%s=%d", name, op->ovalue);
break;
case STRING:
case OTERM:
printf("%s=%s", name, op->osvalue);
break;
}
}