2a780e62ed
without refresh. If the window is not dirty but the window cursor position does not match curscr then move the cursor. This fixes the issues seen in PR lib/54263.
638 lines
15 KiB
C
638 lines
15 KiB
C
/* $NetBSD: addbytes.c,v 1.52 2019/06/09 07:40:14 blymn Exp $ */
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/*
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* Copyright (c) 1987, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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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 University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF 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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#if 0
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static char sccsid[] = "@(#)addbytes.c 8.4 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: addbytes.c,v 1.52 2019/06/09 07:40:14 blymn Exp $");
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#endif
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#endif /* not lint */
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#include <stdlib.h>
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#include <string.h>
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#include "curses.h"
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#include "curses_private.h"
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#ifdef DEBUG
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#include <assert.h>
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#endif
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#define SYNCH_IN {y = win->cury; x = win->curx;}
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#define SYNCH_OUT {win->cury = y; win->curx = x;}
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#define PSYNCH_IN {*y = win->cury; *x = win->curx;}
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#define PSYNCH_OUT {win->cury = *y; win->curx = *x;}
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#ifndef _CURSES_USE_MACROS
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/*
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* addbytes --
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* Add the character to the current position in stdscr.
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*/
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int
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addbytes(const char *bytes, int count)
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{
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return _cursesi_waddbytes(stdscr, bytes, count, 0, 1);
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}
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/*
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* waddbytes --
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* Add the character to the current position in the given window.
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*/
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int
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waddbytes(WINDOW *win, const char *bytes, int count)
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{
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return _cursesi_waddbytes(win, bytes, count, 0, 1);
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}
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/*
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* mvaddbytes --
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* Add the characters to stdscr at the location given.
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*/
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int
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mvaddbytes(int y, int x, const char *bytes, int count)
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{
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return mvwaddbytes(stdscr, y, x, bytes, count);
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}
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/*
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* mvwaddbytes --
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* Add the characters to the given window at the location given.
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*/
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int
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mvwaddbytes(WINDOW *win, int y, int x, const char *bytes, int count)
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{
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if (wmove(win, y, x) == ERR)
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return ERR;
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return _cursesi_waddbytes(win, bytes, count, 0, 1);
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}
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#endif
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int
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__waddbytes(WINDOW *win, const char *bytes, int count, attr_t attr)
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{
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return _cursesi_waddbytes(win, bytes, count, attr, 1);
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}
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/*
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* _cursesi_waddbytes --
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* Add the character to the current position in the given window.
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* if char_interp is non-zero then character interpretation is done on
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* the byte (i.e. \n to newline, \r to carriage return, \b to backspace
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* and so on).
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*/
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int
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_cursesi_waddbytes(WINDOW *win, const char *bytes, int count, attr_t attr,
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int char_interp)
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{
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int x, y, err;
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__LINE *lp;
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#ifdef HAVE_WCHAR
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int n;
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cchar_t cc;
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wchar_t wc;
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mbstate_t st;
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#else
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int c;
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#endif
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#ifdef DEBUG
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int i;
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for (i = 0; i < win->maxy; i++) {
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assert(win->alines[i]->sentinel == SENTINEL_VALUE);
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}
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__CTRACE(__CTRACE_INPUT, "ADDBYTES: add %d bytes\n", count);
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#endif
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err = OK;
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SYNCH_IN;
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lp = win->alines[y];
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#ifdef HAVE_WCHAR
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(void)memset(&st, 0, sizeof(st));
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#endif
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while (count > 0) {
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#ifndef HAVE_WCHAR
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c = *bytes++;
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "ADDBYTES('%c', %x) at (%d, %d)\n",
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c, attr, y, x);
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#endif
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err = _cursesi_addbyte(win, &lp, &y, &x, c, attr, char_interp);
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count--;
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#else
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/*
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* For wide-character support only, try and convert the
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* given string into a wide character - we do this because
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* this is how ncurses behaves (not that I think this is
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* actually the correct thing to do but if we don't do it
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* a lot of things that rely on this behaviour will break
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* and we will be blamed). If the conversion succeeds
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* then we eat the n characters used to make the wide char
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* from the string.
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*/
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n = (int)mbrtowc(&wc, bytes, (size_t)count, &st);
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if (n < 0) {
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/* not a valid conversion just eat a char */
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wc = *bytes;
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n = 1;
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(void)memset(&st, 0, sizeof(st));
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} else if (wc == 0) {
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break;
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"ADDBYTES WIDE(0x%x [%s], %x) at (%d, %d), ate %d bytes\n",
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(unsigned)wc, unctrl((unsigned)wc), attr, y, x, n);
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#endif
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cc.vals[0] = wc;
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cc.elements = 1;
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cc.attributes = attr;
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err = _cursesi_addwchar(win, &lp, &y, &x, &cc, char_interp);
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bytes += n;
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count -= n;
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#endif
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}
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SYNCH_OUT;
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#ifdef DEBUG
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for (i = 0; i < win->maxy; i++) {
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assert(win->alines[i]->sentinel == SENTINEL_VALUE);
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}
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#endif
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return (err);
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}
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/*
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* _cursesi_addbyte -
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* Internal function to add a byte and update the row and column
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* positions as appropriate. If char_interp is non-zero then
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* character interpretation is done on the byte. This function is
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* only used in the narrow character version of curses.
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*/
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int
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_cursesi_addbyte(WINDOW *win, __LINE **lp, int *y, int *x, int c,
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attr_t attr, int char_interp)
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{
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static char blank[] = " ";
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int tabsize;
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int newx, i;
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attr_t attributes;
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if (char_interp) {
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switch (c) {
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case '\t':
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tabsize = win->screen->TABSIZE;
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PSYNCH_OUT;
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newx = tabsize - (*x % tabsize);
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for (i = 0; i < newx; i++) {
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if (waddbytes(win, blank, 1) == ERR)
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return ERR;
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(*x)++;
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}
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PSYNCH_IN;
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return OK;
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case '\n':
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PSYNCH_OUT;
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wclrtoeol(win);
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PSYNCH_IN;
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(*lp)->flags |= __ISPASTEOL;
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break;
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case '\r':
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*x = 0;
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win->curx = *x;
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return OK;
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case '\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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}
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "ADDBYTES(%p, %d, %d)\n", win, *y, *x);
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#endif
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if (char_interp && ((*lp)->flags & __ISPASTEOL)) {
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*x = 0;
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(*lp)->flags &= ~__ISPASTEOL;
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if (*y == win->scr_b) {
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"ADDBYTES - on bottom "
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"of scrolling region\n");
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#endif
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if (!(win->flags & __SCROLLOK))
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return ERR;
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PSYNCH_OUT;
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scroll(win);
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PSYNCH_IN;
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} else {
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(*y)++;
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}
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*lp = win->alines[*y];
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if (c == '\n')
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return OK;
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}
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n",
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*y, *x, *win->alines[*y]->firstchp,
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*win->alines[*y]->lastchp);
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#endif
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attributes = (win->wattr | attr) & (__ATTRIBUTES & ~__COLOR);
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if (attr & __COLOR)
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attributes |= attr & __COLOR;
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else if (win->wattr & __COLOR)
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attributes |= win->wattr & __COLOR;
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/*
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* Always update the change pointers. Otherwise,
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* we could end up not displaying 'blank' characters
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* when overlapping windows are displayed.
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*/
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newx = *x + win->ch_off;
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(*lp)->flags |= __ISDIRTY;
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/*
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* firstchp/lastchp are shared between
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* parent window and sub-window.
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*/
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if (newx < *(*lp)->firstchp)
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*(*lp)->firstchp = newx;
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if (newx > *(*lp)->lastchp)
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*(*lp)->lastchp = newx;
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT, "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
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*(*lp)->firstchp, *(*lp)->lastchp,
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*(*lp)->firstchp - win->ch_off,
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*(*lp)->lastchp - win->ch_off);
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#endif
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if (win->bch != ' ' && c == ' ')
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(*lp)->line[*x].ch = win->bch;
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else
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(*lp)->line[*x].ch = c;
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if (attributes & __COLOR)
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(*lp)->line[*x].attr =
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attributes | (win->battr & ~__COLOR);
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else
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(*lp)->line[*x].attr = attributes | win->battr;
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if (*x == win->maxx - 1)
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(*lp)->flags |= __ISPASTEOL;
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else
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(*x)++;
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n",
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*y, *x, *win->alines[*y]->firstchp,
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*win->alines[*y]->lastchp);
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#endif
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__sync(win);
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return OK;
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}
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/*
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* _cursesi_addwchar -
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* Internal function to add a wide character and update the row
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* and column positions.
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*/
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int
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_cursesi_addwchar(WINDOW *win, __LINE **lnp, int *y, int *x,
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const cchar_t *wch, int char_interp)
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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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int sx = 0, ex = 0, cw = 0, i = 0, newx = 0, tabsize;
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__LDATA *lp = &win->alines[*y]->line[*x], *tp = NULL;
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nschar_t *np = NULL;
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cchar_t cc;
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attr_t attributes;
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if (char_interp) {
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/* special characters handling */
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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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*x = 0;
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win->curx = *x;
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return OK;
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case L'\n':
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wclrtoeol(win);
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PSYNCH_IN;
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*x = 0;
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(*lnp)->flags &= ~__ISPASTEOL;
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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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PSYNCH_OUT;
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scroll(win);
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PSYNCH_IN;
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} else {
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(*y)++;
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}
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PSYNCH_OUT;
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return OK;
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case L'\t':
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cc.vals[0] = L' ';
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cc.elements = 1;
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cc.attributes = win->wattr;
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tabsize = win->screen->TABSIZE;
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newx = tabsize - (*x % tabsize);
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for (i = 0; i < newx; i++) {
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if (wadd_wch(win, &cc) == ERR)
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return ERR;
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(*x)++;
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}
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return OK;
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}
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}
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/* check for non-spacing character */
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if (!wcwidth(wch->vals[0])) {
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"_cursesi_addwchar: char '%c' is non-spacing\n",
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wch->vals[0]);
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#endif /* DEBUG */
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cw = WCOL(*lp);
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if (cw < 0) {
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lp += cw;
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*x += cw;
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}
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for (i = 0; i < wch->elements; i++) {
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if (!(np = (nschar_t *) malloc(sizeof(nschar_t))))
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return ERR;;
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np->ch = wch->vals[i];
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np->next = lp->nsp;
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lp->nsp = np;
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}
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(*lnp)->flags |= __ISDIRTY;
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newx = *x + win->ch_off;
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if (newx < *(*lnp)->firstchp)
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*(*lnp)->firstchp = newx;
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if (newx > *(*lnp)->lastchp)
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*(*lnp)->lastchp = newx;
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__touchline(win, *y, *x, *x);
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return OK;
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}
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/* check for new line first */
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if (char_interp && ((*lnp)->flags & __ISPASTEOL)) {
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*x = 0;
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(*lnp)->flags &= ~__ISPASTEOL;
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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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PSYNCH_OUT;
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scroll(win);
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PSYNCH_IN;
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} else {
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(*y)++;
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}
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(*lnp) = win->alines[*y];
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lp = &win->alines[*y]->line[*x];
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}
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/* clear out the current character */
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cw = WCOL(*lp);
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if (cw >= 0) {
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sx = *x;
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} else {
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for (sx = *x - 1; sx >= max(*x + cw, 0); sx--) {
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"_cursesi_addwchar: clear current char (%d,%d)\n",
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*y, sx);
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#endif /* DEBUG */
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tp = &win->alines[*y]->line[sx];
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tp->ch = (wchar_t) btowc((int) win->bch);
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if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
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return ERR;
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tp->attr = win->battr;
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SET_WCOL(*tp, 1);
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}
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sx = *x + cw;
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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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}
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/* check for enough space before the end of line */
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cw = wcwidth(wch->vals[0]);
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if (cw < 0)
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cw = 1;
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if (cw > win->maxx - *x) {
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"_cursesi_addwchar: clear EOL (%d,%d)\n",
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*y, *x);
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#endif /* DEBUG */
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(*lnp)->flags |= __ISDIRTY;
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newx = *x + win->ch_off;
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if (newx < *(*lnp)->firstchp)
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*(*lnp)->firstchp = newx;
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for (tp = lp; *x < win->maxx; tp++, (*x)++) {
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tp->ch = (wchar_t) btowc((int) win->bch);
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if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
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return ERR;
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tp->attr = win->battr;
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SET_WCOL(*tp, 1);
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}
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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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sx = *x = 0;
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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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PSYNCH_OUT;
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scroll(win);
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PSYNCH_IN;
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} else {
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(*y)++;
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}
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lp = &win->alines[*y]->line[0];
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(*lnp) = win->alines[*y];
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}
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win->cury = *y;
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/* add spacing character */
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#ifdef DEBUG
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__CTRACE(__CTRACE_INPUT,
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"_cursesi_addwchar: add character (%d,%d) 0x%x\n",
|
|
*y, *x, wch->vals[0]);
|
|
#endif /* DEBUG */
|
|
(*lnp)->flags |= __ISDIRTY;
|
|
newx = *x + win->ch_off;
|
|
if (newx < *(*lnp)->firstchp)
|
|
*(*lnp)->firstchp = newx;
|
|
if (lp->nsp) {
|
|
__cursesi_free_nsp(lp->nsp);
|
|
lp->nsp = NULL;
|
|
}
|
|
|
|
lp->ch = wch->vals[0];
|
|
|
|
attributes = (win->wattr | wch->attributes)
|
|
& (WA_ATTRIBUTES & ~__COLOR);
|
|
if (wch->attributes & __COLOR)
|
|
attributes |= wch->attributes & __COLOR;
|
|
else if (win->wattr & __COLOR)
|
|
attributes |= win->wattr & __COLOR;
|
|
if (attributes & __COLOR)
|
|
lp->attr = attributes | (win->battr & ~__COLOR);
|
|
else
|
|
lp->attr = attributes | win->battr;
|
|
|
|
SET_WCOL(*lp, cw);
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT,
|
|
"_cursesi_addwchar: add spacing char 0x%x, attr 0x%x\n",
|
|
lp->ch, lp->attr);
|
|
#endif /* DEBUG */
|
|
|
|
if (wch->elements > 1) {
|
|
for (i = 1; i < wch->elements; i++) {
|
|
np = malloc(sizeof(nschar_t));
|
|
if (!np)
|
|
return ERR;;
|
|
np->ch = wch->vals[i];
|
|
np->next = lp->nsp;
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT,
|
|
"_cursesi_addwchar: add non-spacing char 0x%x\n", np->ch);
|
|
#endif /* DEBUG */
|
|
lp->nsp = np;
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: non-spacing list header: %p\n",
|
|
lp->nsp);
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: add rest columns (%d:%d)\n",
|
|
sx + 1, sx + cw - 1);
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: *x = %d, win->maxx = %d\n", *x, win->maxx);
|
|
#endif /* DEBUG */
|
|
for (tp = lp + 1, *x = sx + 1; *x - sx <= cw - 1; tp++, (*x)++) {
|
|
if (tp->nsp) {
|
|
__cursesi_free_nsp(tp->nsp);
|
|
tp->nsp = NULL;
|
|
}
|
|
tp->ch = wch->vals[0];
|
|
tp->attr = lp->attr & WA_ATTRIBUTES;
|
|
/* Mark as "continuation" cell */
|
|
tp->attr |= __WCWIDTH;
|
|
}
|
|
|
|
if (*x == win->maxx) {
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: do line wrap\n");
|
|
#endif /* DEBUG */
|
|
newx = win->maxx - 1 + win->ch_off;
|
|
if (newx > *(*lnp)->lastchp)
|
|
*(*lnp)->lastchp = newx;
|
|
__touchline(win, *y, sx, (int) win->maxx - 1);
|
|
*x = sx = 0;
|
|
if (*y == win->scr_b) {
|
|
if (!(win->flags & __SCROLLOK))
|
|
return ERR;
|
|
PSYNCH_OUT;
|
|
scroll(win);
|
|
PSYNCH_IN;
|
|
} else {
|
|
(*y)++;
|
|
}
|
|
lp = &win->alines[*y]->line[0];
|
|
(*lnp) = win->alines[*y];
|
|
win->curx = *x;
|
|
win->cury = *y;
|
|
} else {
|
|
win->curx = *x;
|
|
|
|
/* clear the remining of the current characer */
|
|
if (*x && *x < win->maxx) {
|
|
ex = sx + cw;
|
|
tp = &win->alines[*y]->line[ex];
|
|
while (ex < win->maxx && WCOL(*tp) < 0) {
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT,
|
|
"_cursesi_addwchar: clear "
|
|
"remaining of current char (%d,%d)nn",
|
|
*y, ex);
|
|
#endif /* DEBUG */
|
|
tp->ch = (wchar_t) btowc((int) win->bch);
|
|
if (_cursesi_copy_nsp(win->bnsp, tp) == ERR)
|
|
return ERR;
|
|
tp->attr = win->battr;
|
|
SET_WCOL(*tp, 1);
|
|
tp++, ex++;
|
|
}
|
|
newx = ex - 1 + win->ch_off;
|
|
if (newx > *(*lnp)->lastchp)
|
|
*(*lnp)->lastchp = newx;
|
|
__touchline(win, *y, sx, ex - 1);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: %d : 0x%x\n", lp->ch, lp->attr);
|
|
__CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: *x = %d, *y = %d, win->maxx = %d\n", *x, *y, win->maxx);
|
|
#endif /* DEBUG */
|
|
__sync(win);
|
|
return OK;
|
|
#endif
|
|
}
|