mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-30 15:38:06 +01:00
434 lines
10 KiB
C
434 lines
10 KiB
C
/*
|
|
* Copyright (c) 1981, 1993, 1994
|
|
* The 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_put.c 8.3 (Berkeley) 5/4/94";
|
|
#endif /* not lint */
|
|
|
|
#include <string.h>
|
|
|
|
#include "curses.h"
|
|
|
|
#define HARDTABS 8
|
|
|
|
/*
|
|
* Terminal driving and line formatting routines. Basic motion optimizations
|
|
* are done here as well as formatting lines (printing of control characters,
|
|
* line numbering and the like).
|
|
*/
|
|
|
|
/* Stub function for the users. */
|
|
int
|
|
mvcur(ly, lx, y, x)
|
|
int ly, lx, y, x;
|
|
{
|
|
return (__mvcur(ly, lx, y, x, 0));
|
|
}
|
|
|
|
static void fgoto __P((int));
|
|
static int plod __P((int, int));
|
|
static void plodput __P((int));
|
|
static int tabcol __P((int, int));
|
|
|
|
static int outcol, outline, destcol, destline;
|
|
|
|
/*
|
|
* Sync the position of the output cursor. Most work here is rounding for
|
|
* terminal boundaries getting the column position implied by wraparound or
|
|
* the lack thereof and rolling up the screen to get destline on the screen.
|
|
*/
|
|
int
|
|
__mvcur(ly, lx, y, x, in_refresh)
|
|
int ly, lx, y, x, in_refresh;
|
|
{
|
|
#ifdef DEBUG
|
|
__CTRACE("mvcur: moving cursor from (%d, %d) to (%d, %d)\n",
|
|
ly, lx, y, x);
|
|
#endif
|
|
destcol = x;
|
|
destline = y;
|
|
outcol = lx;
|
|
outline = ly;
|
|
if (destline != outline || destcol != outcol)
|
|
fgoto(in_refresh);
|
|
return (OK);
|
|
}
|
|
|
|
static void
|
|
fgoto(in_refresh)
|
|
int in_refresh;
|
|
{
|
|
register int c, l;
|
|
register char *cgp;
|
|
|
|
if (destcol >= COLS) {
|
|
destline += destcol / COLS;
|
|
destcol %= COLS;
|
|
}
|
|
if (outcol >= COLS) {
|
|
l = (outcol + 1) / COLS;
|
|
outline += l;
|
|
outcol %= COLS;
|
|
if (AM == 0) {
|
|
while (l > 0) {
|
|
if (__pfast)
|
|
if (CR)
|
|
tputs(CR, 1, __cputchar);
|
|
else
|
|
putchar('\r');
|
|
if (NL)
|
|
tputs(NL, 1, __cputchar);
|
|
else
|
|
putchar('\n');
|
|
l--;
|
|
}
|
|
outcol = 0;
|
|
}
|
|
if (outline > LINES - 1) {
|
|
destline -= outline - (LINES - 1);
|
|
outline = LINES - 1;
|
|
}
|
|
}
|
|
if (destline >= LINES) {
|
|
l = destline;
|
|
destline = LINES - 1;
|
|
if (outline < LINES - 1) {
|
|
c = destcol;
|
|
if (__pfast == 0 && !CA)
|
|
destcol = 0;
|
|
fgoto(in_refresh);
|
|
destcol = c;
|
|
}
|
|
while (l >= LINES) {
|
|
/* The following linefeed (or simulation thereof) is
|
|
* supposed to scroll up the screen, since we are on
|
|
* the bottom line. We make the assumption that
|
|
* linefeed will scroll. If ns is in the capability
|
|
* list this won't work. We should probably have an
|
|
* sc capability but sf will generally take the place
|
|
* if it works.
|
|
*
|
|
* Superbee glitch: in the middle of the screen have
|
|
* to use esc B (down) because linefeed screws up in
|
|
* "Efficient Paging" (what a joke) mode (which is
|
|
* essential in some SB's because CRLF mode puts
|
|
* garbage in at end of memory), but you must use
|
|
* linefeed to scroll since down arrow won't go past
|
|
* memory end. I turned this off after recieving Paul
|
|
* Eggert's Superbee description which wins better.
|
|
*/
|
|
if (NL /* && !XB */ && __pfast)
|
|
tputs(NL, 1, __cputchar);
|
|
else
|
|
putchar('\n');
|
|
l--;
|
|
if (__pfast == 0)
|
|
outcol = 0;
|
|
}
|
|
}
|
|
if (destline < outline && !(CA || UP))
|
|
destline = outline;
|
|
if (CA) {
|
|
cgp = tgoto(CM, destcol, destline);
|
|
|
|
/*
|
|
* Need this condition due to inconsistent behavior
|
|
* of backspace on the last column.
|
|
*/
|
|
if (outcol != COLS - 1 && plod(strlen(cgp), in_refresh) > 0)
|
|
plod(0, in_refresh);
|
|
else
|
|
tputs(cgp, 1, __cputchar);
|
|
} else
|
|
plod(0, in_refresh);
|
|
outline = destline;
|
|
outcol = destcol;
|
|
}
|
|
/*
|
|
* Move (slowly) to destination.
|
|
* Hard thing here is using home cursor on really deficient terminals.
|
|
* Otherwise just use cursor motions, hacking use of tabs and overtabbing
|
|
* and backspace.
|
|
*/
|
|
|
|
static int plodcnt, plodflg;
|
|
|
|
static void
|
|
plodput(c)
|
|
int c;
|
|
{
|
|
if (plodflg)
|
|
--plodcnt;
|
|
else
|
|
putchar(c);
|
|
}
|
|
|
|
static int
|
|
plod(cnt, in_refresh)
|
|
int cnt, in_refresh;
|
|
{
|
|
register int i, j, k, soutcol, soutline;
|
|
|
|
plodcnt = plodflg = cnt;
|
|
soutcol = outcol;
|
|
soutline = outline;
|
|
/*
|
|
* Consider homing and moving down/right from there, vs. moving
|
|
* directly with local motions to the right spot.
|
|
*/
|
|
if (HO) {
|
|
/*
|
|
* i is the cost to home and tab/space to the right to get to
|
|
* the proper column. This assumes ND space costs 1 char. So
|
|
* i + destcol is cost of motion with home.
|
|
*/
|
|
if (GT)
|
|
i = (destcol / HARDTABS) + (destcol % HARDTABS);
|
|
else
|
|
i = destcol;
|
|
|
|
/* j is cost to move locally without homing. */
|
|
if (destcol >= outcol) { /* if motion is to the right */
|
|
j = destcol / HARDTABS - outcol / HARDTABS;
|
|
if (GT && j)
|
|
j += destcol % HARDTABS;
|
|
else
|
|
j = destcol - outcol;
|
|
} else
|
|
/* leftward motion only works if we can backspace. */
|
|
if (outcol - destcol <= i && (BS || BC))
|
|
/* Cheaper to backspace. */
|
|
i = j = outcol - destcol;
|
|
else
|
|
/* Impossibly expensive. */
|
|
j = i + 1;
|
|
|
|
/* k is the absolute value of vertical distance. */
|
|
k = outline - destline;
|
|
if (k < 0)
|
|
k = -k;
|
|
j += k;
|
|
|
|
/* Decision. We may not have a choice if no UP. */
|
|
if (i + destline < j || (!UP && destline < outline)) {
|
|
/*
|
|
* Cheaper to home. Do it now and pretend it's a
|
|
* regular local motion.
|
|
*/
|
|
tputs(HO, 1, plodput);
|
|
outcol = outline = 0;
|
|
} else if (LL) {
|
|
/*
|
|
* Quickly consider homing down and moving from there.
|
|
* Assume cost of LL is 2.
|
|
*/
|
|
k = (LINES - 1) - destline;
|
|
if (i + k + 2 < j && (k <= 0 || UP)) {
|
|
tputs(LL, 1, plodput);
|
|
outcol = 0;
|
|
outline = LINES - 1;
|
|
}
|
|
}
|
|
} else
|
|
/* No home and no up means it's impossible. */
|
|
if (!UP && destline < outline)
|
|
return (-1);
|
|
if (GT)
|
|
i = destcol % HARDTABS + destcol / HARDTABS;
|
|
else
|
|
i = destcol;
|
|
#ifdef notdef
|
|
if (BT && outcol > destcol &&
|
|
(j = (((outcol+7) & ~7) - destcol - 1) >> 3)) {
|
|
j *= (k = strlen(BT));
|
|
if ((k += (destcol&7)) > 4)
|
|
j += 8 - (destcol&7);
|
|
else
|
|
j += k;
|
|
}
|
|
else
|
|
#endif
|
|
j = outcol - destcol;
|
|
|
|
/*
|
|
* If we will later need a \n which will turn into a \r\n by the
|
|
* system or the terminal, then don't bother to try to \r.
|
|
*/
|
|
if ((NONL || !__pfast) && outline < destline)
|
|
goto dontcr;
|
|
|
|
/*
|
|
* If the terminal will do a \r\n and there isn't room for it, then
|
|
* we can't afford a \r.
|
|
*/
|
|
if (NC && outline >= destline)
|
|
goto dontcr;
|
|
|
|
/*
|
|
* If it will be cheaper, or if we can't back up, then send a return
|
|
* preliminarily.
|
|
*/
|
|
if (j > i + 1 || outcol > destcol && !BS && !BC) {
|
|
/*
|
|
* BUG: this doesn't take the (possibly long) length of CR
|
|
* into account.
|
|
*/
|
|
if (CR)
|
|
tputs(CR, 1, plodput);
|
|
else
|
|
plodput('\r');
|
|
if (NC) {
|
|
if (NL)
|
|
tputs(NL, 1, plodput);
|
|
else
|
|
plodput('\n');
|
|
outline++;
|
|
}
|
|
outcol = 0;
|
|
}
|
|
|
|
dontcr: while (outline < destline) {
|
|
outline++;
|
|
if (NL)
|
|
tputs(NL, 1, plodput);
|
|
else
|
|
plodput('\n');
|
|
if (plodcnt < 0)
|
|
goto out;
|
|
if (NONL || __pfast == 0)
|
|
outcol = 0;
|
|
}
|
|
if (BT)
|
|
k = strlen(BT);
|
|
while (outcol > destcol) {
|
|
if (plodcnt < 0)
|
|
goto out;
|
|
#ifdef notdef
|
|
if (BT && outcol - destcol > k + 4) {
|
|
tputs(BT, 0, plodput);
|
|
outcol--;
|
|
outcol &= ~7;
|
|
continue;
|
|
}
|
|
#endif
|
|
outcol--;
|
|
if (BC)
|
|
tputs(BC, 0, plodput);
|
|
else
|
|
plodput('\b');
|
|
}
|
|
while (outline > destline) {
|
|
outline--;
|
|
tputs(UP, 1, plodput);
|
|
if (plodcnt < 0)
|
|
goto out;
|
|
}
|
|
if (GT && destcol - outcol > 1) {
|
|
for (;;) {
|
|
i = tabcol(outcol, HARDTABS);
|
|
if (i > destcol)
|
|
break;
|
|
if (TA)
|
|
tputs(TA, 0, plodput);
|
|
else
|
|
plodput('\t');
|
|
outcol = i;
|
|
}
|
|
if (destcol - outcol > 4 && i < COLS && (BC || BS)) {
|
|
if (TA)
|
|
tputs(TA, 0, plodput);
|
|
else
|
|
plodput('\t');
|
|
outcol = i;
|
|
while (outcol > destcol) {
|
|
outcol--;
|
|
if (BC)
|
|
tputs(BC, 0, plodput);
|
|
else
|
|
plodput('\b');
|
|
}
|
|
}
|
|
}
|
|
while (outcol < destcol) {
|
|
/*
|
|
* Move one char to the right. We don't use ND space because
|
|
* it's better to just print the char we are moving over.
|
|
*/
|
|
if (in_refresh)
|
|
if (plodflg) /* Avoid a complex calculation. */
|
|
plodcnt--;
|
|
else {
|
|
i = curscr->lines[outline]->line[outcol].ch;
|
|
if ((curscr->lines[outline]->line[outcol].attr
|
|
& __STANDOUT) ==
|
|
(curscr->flags & __WSTANDOUT))
|
|
putchar(i);
|
|
else
|
|
goto nondes;
|
|
}
|
|
else
|
|
nondes: if (ND)
|
|
tputs(ND, 0, plodput);
|
|
else
|
|
plodput(' ');
|
|
outcol++;
|
|
if (plodcnt < 0)
|
|
goto out;
|
|
}
|
|
|
|
out: if (plodflg) {
|
|
outcol = soutcol;
|
|
outline = soutline;
|
|
}
|
|
return (plodcnt);
|
|
}
|
|
|
|
/*
|
|
* Return the column number that results from being in column col and
|
|
* hitting a tab, where tabs are set every ts columns. Work right for
|
|
* the case where col > COLS, even if ts does not divide COLS.
|
|
*/
|
|
static int
|
|
tabcol(col, ts)
|
|
int col, ts;
|
|
{
|
|
int offset;
|
|
|
|
if (col >= COLS) {
|
|
offset = COLS * (col / COLS);
|
|
col -= offset;
|
|
} else
|
|
offset = 0;
|
|
return (col + ts - (col % ts) + offset);
|
|
}
|