119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/* $NetBSD: delwin.c,v 1.22 2021/09/06 07:03:49 rin Exp $ */
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/*
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* Copyright (c) 1981, 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[] = "@(#)delwin.c 8.2 (Berkeley) 5/4/94";
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#else
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__RCSID("$NetBSD: delwin.c,v 1.22 2021/09/06 07:03:49 rin 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 "curses.h"
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#include "curses_private.h"
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/*
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* delwin --
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* Delete a window and release it back to the system.
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*/
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int
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delwin(WINDOW *win)
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{
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WINDOW *wp, *np;
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struct __winlist *wl, *pwl;
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SCREEN *screen;
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__CTRACE(__CTRACE_WINDOW, "delwin(%p)\n", win);
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if (win == NULL)
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return OK;
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/*
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* Free any storage used by non-spacing characters in the window.
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*/
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#ifdef HAVE_WCHAR
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__cursesi_win_free_nsp(win);
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#endif
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if (win->orig == NULL) {
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/*
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* If we are the original window, delete the space for all
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* the subwindows and the window space.
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*/
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free(win->wspace);
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wp = win->nextp;
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while (wp != win) {
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np = wp->nextp;
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delwin(wp);
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wp = np;
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}
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/* Remove ourselves from the list of windows on the screen. */
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pwl = NULL;
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screen = win->screen;
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for (wl = screen->winlistp; wl; pwl = wl, wl = wl->nextp) {
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if (wl->winp != win)
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continue;
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if (pwl != NULL)
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pwl->nextp = wl->nextp;
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else
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screen->winlistp = wl->nextp;
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free(wl);
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break;
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}
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} else {
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/*
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* If we are a subwindow, take ourselves out of the list.
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* NOTE: if we are a subwindow, the minimum list is orig
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* followed by this subwindow, so there are always at least
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* two windows in the list.
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*/
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for (wp = win->nextp; wp->nextp != win; wp = wp->nextp)
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continue;
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wp->nextp = win->nextp;
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}
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free(win->lspace);
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free(win->alines);
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if (win == _cursesi_screen->curscr)
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_cursesi_screen->curscr = NULL;
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if (win == _cursesi_screen->stdscr)
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_cursesi_screen->stdscr = NULL;
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if (win == _cursesi_screen->__virtscr)
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_cursesi_screen->__virtscr = NULL;
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if (win->fp)
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fclose(win->fp);
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free(win->buf);
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free(win);
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return OK;
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}
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