/* $NetBSD: insstr.c,v 1.12 2024/12/23 02:58:03 blymn Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation Inc.
* All rights reserved.
*
* This code is derived from code donated to the NetBSD Foundation
* by Ruibiao Qiu <
[email protected],
[email protected]>.
*
*
* 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. Neither the name of the NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: insstr.c,v 1.12 2024/12/23 02:58:03 blymn Exp $");
#endif /* not lint */
#include <string.h>
#include <stdlib.h>
#include "curses.h"
#include "curses_private.h"
#ifndef _CURSES_USE_MACROS
/*
* insstr --
* insert a multi-byte character string into the current window
*/
int
insstr(const char *str)
{
return winsstr(stdscr, str);
}
/*
* insnstr --
* insert a multi-byte character string into the current window
* with at most n characters
*/
int
insnstr(const char *str, int n)
{
return winsnstr(stdscr, str, n);
}
/*
* mvinsstr --
* Do an insert-string on the line at (y, x).
*/
int
mvinsstr(int y, int x, const char *str)
{
return mvwinsstr(stdscr, y, x, str);
}
/*
* mvinsnstr --
* Do an insert-n-string on the line at (y, x).
*/
int
mvinsnstr(int y, int x, const char *str, int n)
{
return mvwinsnstr(stdscr, y, x, str, n);
}
/*
* mvwinsstr --
* Do an insert-string on the line at (y, x) in the given window.
*/
int
mvwinsstr(WINDOW *win, int y, int x, const char *str)
{
if (wmove(win, y, x) == ERR)
return ERR;
return winsstr(win, str);
}
/*
* mvwinsnstr --
* Do an insert-n-string on the line at (y, x) in the given window.
*/
int
mvwinsnstr(WINDOW *win, int y, int x, const char *str, int n)
{
if (wmove(win, y, x) == ERR)
return ERR;
return winsnstr(win, str, n);
}
#endif
/*
* winsstr --
* Do an insert-string on the line, leaving (cury, curx) unchanged.
* No wrapping.
*/
int
winsstr(WINDOW *win, const char *str)
{
return winsnstr(win, str, -1);
}
/*
* winsnstr --
* Do an insert-n-string on the line, leaving (cury, curx) unchanged.
* Performs wrapping.
*/
int
winsnstr(WINDOW *win, const char *str, int n)
{
__LDATA *end, *temp1, *temp2;
const char *scp;
int len, x;
__LINE *lnp;
#ifdef HAVE_WCHAR
nschar_t *np, *tnp;
#endif /* HAVE_WCHAR */
if (__predict_false(win == NULL))
return ERR;
/* find string length */
if (n > 0)
for (scp = str, len = 0; n-- && *scp++; ++len);
else
for (scp = str, len = 0; *scp++; ++len);
__CTRACE(__CTRACE_INPUT, "winsnstr: len = %d\n", len);
/* move string */
end = &win->alines[win->cury]->line[win->curx];
if (len < win->maxx - win->curx) {
__CTRACE(__CTRACE_INPUT, "winsnstr: shift %d cells\n", len);
temp1 = &win->alines[win->cury]->line[win->maxx - 1];
temp2 = temp1 - len;
while (temp2 >= end) {
#ifdef HAVE_WCHAR
np = temp1->nsp;
if (np){
while (np) {
tnp = np->next;
free(np);
np = tnp;
}
temp1->nsp = NULL;
}
#endif /* HAVE_WCHAR */
(void)memcpy(temp1, temp2, sizeof(__LDATA));
temp1--, temp2--;
}
}
for (scp = str, temp1 = end, x = win->curx;
*scp && x < len + win->curx && x < win->maxx;
scp++, temp1++, x++)
{
temp1->ch = (wchar_t)*scp & __CHARTEXT;
temp1->attr = win->wattr;
temp1->cflags &= ~CA_BACKGROUND;
temp1->cflags &= ~CA_CONTINUATION;
#ifdef HAVE_WCHAR
temp1->wcols = 1;
#endif /* HAVE_WCHAR */
}
#ifdef DEBUG
{
int i;
for (i = win->curx; i < win->curx + len; i++) {
__CTRACE(__CTRACE_INPUT,
"winsnstr: (%d,%d)=('%c',%x)\n", win->cury, i,
win->alines[win->cury]->line[i].ch,
win->alines[win->cury]->line[i].attr);
}
}
#endif /* DEBUG */
lnp = win->alines[win->cury];
lnp->flags |= __ISDIRTY;
if (win->ch_off < *lnp->firstchp)
*lnp->firstchp = win->ch_off;
if (win->ch_off + win->maxx - 1 > *lnp->lastchp)
*lnp->lastchp = win->ch_off + win->maxx - 1;
__touchline(win, (int)win->cury, (int)win->curx, (int)win->maxx - 1);
__sync(win);
return OK;
}
