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NetBSD/lib/libcurses/ins_wstr.c

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/* $NetBSD: ins_wstr.c,v 1.1 2007/01/21 11:38:59 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 <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
*
*
* 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: ins_wstr.c,v 1.1 2007/01/21 11:38:59 blymn Exp $");
#endif /* not lint */
#include <string.h>
#include <stdlib.h>
#include "curses.h"
#include "curses_private.h"
/*
* ins_wstr --
* insert a multi-character wide character string into the current window
*/
int
ins_wstr(const wchar_t *wstr)
{
return wins_wstr(stdscr, wstr);
}
/*
* ins_nwstr --
* insert a multi-character wide character string into the current window
* with at most n characters
*/
int
ins_nwstr(const wchar_t *wstr, int n)
{
return wins_nwstr(stdscr, wstr, n);
}
/*
* mvins_wstr --
* Do an insert-string on the line at (y, x).
*/
int
mvins_wstr(int y, int x, const wchar_t *wstr)
{
return mvwins_wstr(stdscr, y, x, wstr);
}
/*
* mvins_nwstr --
* Do an insert-n-string on the line at (y, x).
*/
int
mvins_nwstr(int y, int x, const wchar_t *wstr, int n)
{
return mvwins_nwstr(stdscr, y, x, wstr, n);
}
/*
* mvwins_wstr --
* Do an insert-string on the line at (y, x) in the given window.
*/
int
mvwins_wstr(WINDOW *win, int y, int x, const wchar_t *wstr)
{
if (wmove(win, y, x) == ERR)
return ERR;
return wins_wstr(stdscr, wstr);
}
/*
* mvwins_nwstr --
* Do an insert-n-string on the line at (y, x) in the given window.
*/
int
mvwins_nwstr(WINDOW *win, int y, int x, const wchar_t *wstr, int n)
{
if (wmove(win, y, x) == ERR)
return ERR;
return wins_nwstr(stdscr, wstr, n);
}
/*
* wins_wstr --
* Do an insert-string on the line, leaving (cury, curx) unchanged.
*/
int
wins_wstr(WINDOW *win, const wchar_t *wstr)
{
return wins_nwstr(win, wstr, -1);
}
/*
* wins_nwstr --
* Do an insert-n-string on the line, leaving (cury, curx) unchanged.
*/
int
wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
{
#ifndef HAVE_WCHAR
return ERR;
#else
__LDATA *start, *temp1, *temp2;
__LINE *lnp;
const wchar_t *scp;
int width, len, sx, x, y, cw, pcw, newx;
nschar_t *np;
wchar_t ws[] = L" ";
/* check for leading non-spacing character */
if (!wstr)
return OK;
cw = wcwidth(*wstr);
if (!cw)
return ERR;
scp = wstr + 1;
width = cw;
len = 1;
n--;
while (*scp) {
if (!n)
break;
n--, len++, width += wcwidth(*scp);
scp++;
}
#ifdef DEBUG
__CTRACE("[wins_nwstr]width=%d,len=%d\n", width, len);
#endif /* DEBUG */
if (cw > win->maxx - win->curx + 1)
return ERR;
start = &win->lines[win->cury]->line[win->curx];
sx = win->curx;
lnp = win->lines[win->cury];
pcw = WCOL(*start);
if (pcw < 0) {
sx += pcw;
start += pcw;
}
#ifdef DEBUG
__CTRACE("[wins_nwstr]start@(%d)\n", sx);
#endif /* DEBUG */
pcw = WCOL(*start);
lnp->flags |= __ISDIRTY;
newx = sx + win->ch_off;
if (newx < *lnp->firstchp)
*lnp->firstchp = newx;
#ifdef DEBUG
{
int x;
__CTRACE("========before=======\n");
for (x = 0; x < win->maxx; x++)
__CTRACE("[wins_nwstr](%d,%d)=(%x,%x,%p)\n",
(int)win->cury, x,
win->lines[win->cury]->line[x].ch,
win->lines[win->cury]->line[x].attr,
win->lines[win->cury]->line[x].nsp);
}
#endif /* DEBUG */
/* shift all complete characters */
if (sx + width + pcw <= win->maxx) {
#ifdef DEBUG
__CTRACE("[wins_nwstr]shift all characters\n");
#endif /* DEBUG */
temp1 = &win->lines[win->cury]->line[win->maxx - 1];
temp2 = temp1 - width;
pcw = WCOL(*(temp2 + 1));
if (pcw < 0) {
#ifdef DEBUG
__CTRACE("[wins_nwstr]clear from %d to EOL(%d)\n",
win->maxx + pcw, win->maxx - 1);
#endif /* DEBUG */
temp2 += pcw;
while (temp1 > temp2 + width) {
temp1->ch = (wchar_t)btowc((int) win->bch);
if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
return ERR;
temp1->attr = win->battr;
SET_WCOL(*temp1, 1);
#ifdef DEBUG
__CTRACE("[wins_nwstr]empty cell(%p)\n",
temp1);
#endif /* DEBUG */
temp1--;
}
}
while (temp2 >= start) {
(void)memcpy(temp1, temp2, sizeof(__LDATA));
temp1--, temp2--;
}
#ifdef DEBUG
{
int x;
__CTRACE("=====after shift====\n");
for (x = 0; x < win->maxx; x++)
__CTRACE("[wins_nwstr](%d,%d)=(%x,%x,%p)\n",
(int)win->cury, x,
win->lines[win->cury]->line[x].ch,
win->lines[win->cury]->line[x].attr,
win->lines[win->cury]->line[x].nsp);
}
#endif /* DEBUG */
}
/* update string columns */
x = win->curx;
y = win->cury;
for (scp = wstr, temp1 = start; len; len--, scp++) {
switch (*scp) {
case L'\b':
if (--x < 0)
x = 0;
win->curx = x;
continue;;
case L'\r':
win->curx = 0;
continue;
case L'\n':
wclrtoeol(win);
if (y == win->scr_b) {
if (!(win->flags & __SCROLLOK))
return ERR;
scroll(win);
}
continue;
case L'\t':
if (wins_nwstr(win, ws,
min(win->maxx - x, 8-(x % 8)))
== ERR)
return ERR;
continue;
}
cw = wcwidth(*scp);
if (cw) {
/* 1st column */
temp1->ch = (wchar_t)*scp;
temp1->attr = win->wattr;
SET_WCOL(*temp1, cw);
temp1->nsp = NULL;
#ifdef DEBUG
__CTRACE("[wins_nwstr]add spacing char(%x)\n",
temp1->ch);
#endif /* DEBUG */
temp2 = temp1++;
if (cw > 1) {
x = -1;
while (temp1 < temp2 + cw) {
/* the rest columns */
temp1->ch = (wchar_t)*scp;
temp1->attr = win->wattr;
temp1->nsp = NULL;
SET_WCOL(*temp1, x);
temp1++, x--;
}
temp1--;
}
} else {
/* non-spacing character */
np = (nschar_t *)malloc(sizeof(nschar_t));
if (!np)
return ERR;
np->ch = *scp;
np->next = temp1->nsp;
temp1->nsp = np;
#ifdef DEBUG
__CTRACE("[wins_nstr]add non-spacing char(%x)\n",
np->ch);
#endif /* DEBUG */
}
}
#ifdef DEBUG
{
int x;
__CTRACE("========after=======\n");
for (x = 0; x < win->maxx; x++)
__CTRACE("[wins_nwstr](%d,%d)=(%x,%x,%p)\n",
(int)win->cury, x,
win->lines[win->cury]->line[x].ch,
win->lines[win->cury]->line[x].attr,
win->lines[win->cury]->line[x].nsp);
}
#endif /* DEBUG */
newx = win->maxx - 1 + win->ch_off;
if (newx > *lnp->lastchp)
*lnp->lastchp = newx;
__touchline(win, (int) win->cury, sx, (int) win->maxx - 1);
return OK;
#endif /* HAVE_WCHAR */
}
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