/*
* Enter visual mode
*/
void
vop(void)
{
register int c;
#if 0
char atube[TUBESIZE + LBSIZE];
#endif
ttymode f; /* mjm: was register */
if (!CA && UP == NOSTR) {
if (initev) {
toopen:
merror("[Using open mode]");
putNFL();
oop();
return;
}
error("Visual needs addressible cursor or upline capability");
}
if (OS && !EO) {
if (initev)
goto toopen;
error("Can't use visual on a terminal which overstrikes");
}
if (!CL) {
if (initev)
goto toopen;
error("Visual requires clear screen capability");
}
if (NS && !SF) {
if (initev)
goto toopen;
error("Visual requires scrolling");
}
ovbeg();
bastate = VISUAL;
c = 0;
if (any(peekchar(), "+-^."))
c = ex_getchar();
pastwh();
vsetsiz(isdigit(peekchar()) ? getnum() : value(WINDOW));
setwind();
ex_newline();
vok(atube);
if (!inglobal)
savevis();
Outchar = vputchar;
vmoving = 0;
f = ostart();
if (initev == 0) {
vcontext(dot, c);
vnline(NOSTR);
}
vmain();
Command = "visual";
ovend(f);
}
oop()
{
register char *ic;
#ifndef u370
char atube[TUBESIZE + LBSIZE];
#endif
ttymode f; /* mjm: was register */
int resize;
if (resize = setjmp(venv)) {
setsize();
initev = (char *)0;
inopen = 0;
addr1 = addr2 = dot;
}
(void)signal(SIGWINCH, winch);
ovbeg();
if (peekchar() == '/') {
ignore(compile(getchar(), 1));
savere(scanre);
if (execute(0, dot) == 0)
error("Fail|Pattern not found on addressed line");
ic = loc1;
if (ic > linebuf && *ic == 0)
ic--;
} else {
getDOT();
ic = vskipwh(linebuf);
}
newline();
/*
* If overstrike then have to HARDOPEN
* else if can move cursor up off current line can use CRTOPEN (~~vi1)
* otherwise (ugh) have to use ONEOPEN (like adm3)
*/
if (OS && !EO)
bastate = HARDOPEN;
else if (CA || UP)
bastate = CRTOPEN;
else
bastate = ONEOPEN;
setwind();
/*
* To avoid bombing on glass-crt's when the line is too long
* pretend that such terminals are 160 columns wide.
* If a line is too wide for display, we will dynamically
* switch to hardcopy open mode.
*/
if (state != CRTOPEN)
WCOLS = TUBECOLS;
if (!inglobal)
savevis();
vok(atube);
if (state != CRTOPEN)
COLUMNS = WCOLS;
Outchar = vputchar;
f = ostart();
if (state == CRTOPEN) {
if (outcol == UKCOL)
outcol = 0;
vmoveitup(1, 1);
} else
outline = destline = WBOT;
vshow(dot, NOLINE);
vnline(ic);
vmain();
if (state != CRTOPEN)
vclean();
Command = "open";
ovend(f);
(void)signal(SIGWINCH, SIG_DFL);
}
/*
* Do a z operation.
* Code here is rather long, and very uninteresting.
*/
void
vzop(int hadcnt, int cnt, register int c)
{
register line *addr;
if (state != VISUAL) {
/*
* Z from open; always like a z=.
* This code is a mess and should be cleaned up.
*/
vmoveitup(1, 1);
vgoto(outline, 0);
ostop(normf);
setoutt();
addr2 = dot;
vclear();
destline = WECHO;
zop2(Xhadcnt ? Xcnt : value(WINDOW) - 1, '=');
if (state == CRTOPEN)
putnl();
putNFL();
termreset();
Outchar = vputchar;
ignore(ostart());
vcnt = 0;
outline = destline = 0;
vjumpto(dot, cursor, 0);
return;
}
if (hadcnt) {
addr = zero + cnt;
if (addr < one)
addr = one;
if (addr > dol)
addr = dol;
markit(addr);
} else
switch (c) {
case '+':
addr = dot + vcnt - vcline;
break;
case '^':
addr = dot - vcline - 1;
forbid (addr < one);
c = '-';
break;
default:
addr = dot;
break;
}
switch (c) {
case '.':
case '-':
break;
case '^':
forbid (addr <= one);
break;
case '+':
forbid (addr >= dol);
/* fall into ... */
case CR:
case NL:
c = CR;
break;
default:
beep();
return;
}
vmoving = 0;
vjumpto(addr, NOSTR, c);
}
