252 lines
6.2 KiB
C
252 lines
6.2 KiB
C
/* $NetBSD: ins_wch.c,v 1.3 2007/05/29 11:10:56 blymn Exp $ */
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/*
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* Copyright (c) 2005 The NetBSD Foundation Inc.
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* All rights reserved.
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*
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* This code is derived from code donated to the NetBSD Foundation
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* by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: ins_wch.c,v 1.3 2007/05/29 11:10:56 blymn Exp $");
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#endif /* not lint */
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#include <string.h>
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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/*
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* ins_wch --
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* Do an insert-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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ins_wch(const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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return wins_wch(stdscr, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* mvins_wch --
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* Do an insert-char on the line at (y, x).
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*/
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int
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mvins_wch(int y, int x, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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return mvwins_wch(stdscr, y, x, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* mvwins_wch --
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* Do an insert-char on the line at (y, x) in the given window.
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*/
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int
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mvwins_wch(WINDOW *win, int y, int x, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wins_wch(stdscr, wch);
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#endif /* HAVE_WCHAR */
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}
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/*
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* wins_wch --
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* Do an insert-char on the line, leaving (cury, curx) unchanged.
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*/
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int
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wins_wch(WINDOW *win, const cchar_t *wch)
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{
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#ifndef HAVE_WCHAR
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return ERR;
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#else
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__LDATA *start, *temp1, *temp2;
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__LINE *lnp;
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int cw, pcw, x, y, sx, ex, newx, i;
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nschar_t *np, *tnp;
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wchar_t ws[] = L" ";
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/* check for non-spacing characters */
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if ( !wch )
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return OK;
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cw = wcwidth(wch->vals[0]);
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if (!cw)
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return wadd_wch( win, wch );
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "--before--\n");
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for ( x = 0; x < win->maxx; x++ )
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__CTRACE(__CTRACE_INPUT, "wins_wch: (0,%d)=(%x,%x,%p)\n", x,
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win->lines[0]->line[x].ch,
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win->lines[0]->line[x].attr,
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win->lines[0]->line[x].nsp);
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#endif /* DEBUG */
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x = win->curx;
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y = win->cury;
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "wins_wch: (%d,%d)\n", y, x);
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#endif /* DEBUG */
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switch ( wch->vals[ 0 ]) {
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case L'\b':
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if ( --x < 0 )
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x = 0;
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win->curx = x;
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return OK;
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case L'\r':
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win->curx = 0;
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return OK;
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case L'\n':
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wclrtoeol( win );
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if (y == win->scr_b) {
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if (!(win->flags & __SCROLLOK))
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return ERR;
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scroll(win);
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}
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return OK;
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case L'\t':
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if (wins_nwstr(win, ws, min(win->maxx - x, 8-(x % 8)))
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== ERR)
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return ERR;
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return OK;
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}
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/* locate current cell */
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x = win->curx;
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y = win->cury;
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lnp = win->lines[ y ];
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start = &win->lines[ y ]->line[ x ];
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sx = x;
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pcw = WCOL( *start );
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if (pcw < 0) {
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start += pcw;
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sx += pcw;
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}
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if ( cw > win->maxx - sx )
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return ERR;
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lnp->flags |= __ISDIRTY;
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newx = sx + win->ch_off;
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if ( newx < *lnp->firstchp )
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*lnp->firstchp = newx;
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/* shift all complete characters */
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "wins_wch: shift all characters\n");
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#endif /* DEBUG */
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temp1 = &win->lines[ y ]->line[ win->maxx - 1 ];
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temp2 = temp1 - cw;
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pcw = WCOL(*(temp2 + 1));
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if (pcw < 0) {
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "wins_wch: clear EOL\n");
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#endif /* DEBUG */
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temp2 += pcw;
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while ( temp1 > temp2 + cw ) {
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np = temp1->nsp;
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if (np) {
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while ( np ) {
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tnp = np->next;
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free( np );
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np = tnp;
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}
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temp1->nsp = NULL;
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}
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temp1->ch = ( wchar_t )btowc(( int ) win->bch );
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if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
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return ERR;
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temp1->attr = win->battr;
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SET_WCOL( *temp1, 1 );
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temp1--;
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}
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}
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while ( temp2 >= start ) {
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( void )memcpy( temp1, temp2, sizeof( __LDATA ));
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temp1--, temp2--;
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}
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/* update character under cursor */
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start->nsp = NULL;
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start->ch = wch->vals[ 0 ];
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start->attr = wch->attributes & WA_ATTRIBUTES;
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SET_WCOL( *start, cw );
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if ( wch->elements > 1 ) {
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for ( i = 1; i < wch->elements; i++ ) {
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np = (nschar_t *)malloc(sizeof(nschar_t));
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if (!np)
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return ERR;
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np->ch = wch->vals[ i ];
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np->next = start->nsp;
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start->nsp = np;
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}
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "wins_wch: insert (%x,%x,%p)\n",
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start->ch, start->attr, start->nsp);
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#endif /* DEBUG */
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temp1 = start + 1;
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ex = x + 1;
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while ( ex - x < cw ) {
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temp1->ch = wch->vals[ 0 ];
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SET_WCOL( *temp1, x - ex );
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temp1->nsp = NULL;
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ex++, temp1++;
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}
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#ifdef DEBUG
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{
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__CTRACE(__CTRACE_INPUT, "--after---\n");
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for ( x = 0; x < win->maxx; x++ )
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__CTRACE(__CTRACE_INPUT,
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"wins_wch: (0,%d)=(%x,%x,%p)\n", x,
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win->lines[0]->line[x].ch,
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win->lines[0]->line[x].attr,
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win->lines[0]->line[x].nsp);
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}
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#endif /* DEBUG */
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newx = win->maxx - 1 + win->ch_off;
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if ( newx > *lnp->lastchp )
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*lnp->lastchp = newx;
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__touchline(win, y, sx, (int) win->maxx - 1);
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return OK;
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#endif /* HAVE_WCHAR */
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}
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