186 lines
5.1 KiB
C
186 lines
5.1 KiB
C
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef lint
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static char sccsid[] = "@(#)wwopen.c 3.29 (Berkeley) 6/6/90";
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#endif /* not lint */
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#include "ww.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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struct ww *
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wwopen(flags, nrow, ncol, row, col, nline)
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{
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register struct ww *w;
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register i, j;
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char m;
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short nvis;
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w = (struct ww *)calloc(sizeof (struct ww), 1);
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if (w == 0) {
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wwerrno = WWE_NOMEM;
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goto bad;
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}
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w->ww_pty = -1;
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w->ww_socket = -1;
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for (i = 0; i < NWW && wwindex[i] != 0; i++)
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;
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if (i >= NWW) {
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wwerrno = WWE_TOOMANY;
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goto bad;
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}
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w->ww_index = i;
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if (nline < nrow)
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nline = nrow;
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w->ww_w.t = row;
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w->ww_w.b = row + nrow;
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w->ww_w.l = col;
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w->ww_w.r = col + ncol;
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w->ww_w.nr = nrow;
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w->ww_w.nc = ncol;
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w->ww_b.t = row;
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w->ww_b.b = row + nline;
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w->ww_b.l = col;
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w->ww_b.r = col + ncol;
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w->ww_b.nr = nline;
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w->ww_b.nc = ncol;
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w->ww_i.t = MAX(w->ww_w.t, 0);
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w->ww_i.b = MIN(w->ww_w.b, wwnrow);
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w->ww_i.l = MAX(w->ww_w.l, 0);
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w->ww_i.r = MIN(w->ww_w.r, wwncol);
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w->ww_i.nr = w->ww_i.b - w->ww_i.t;
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w->ww_i.nc = w->ww_i.r - w->ww_i.l;
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w->ww_cur.r = w->ww_w.t;
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w->ww_cur.c = w->ww_w.l;
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if (flags & WWO_PTY) {
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if (wwgetpty(w) < 0)
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goto bad;
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w->ww_ispty = 1;
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} else if (flags & WWO_SOCKET) {
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int d[2];
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if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, d) < 0) {
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wwerrno = WWE_SYS;
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goto bad;
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}
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w->ww_pty = d[0];
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w->ww_socket = d[1];
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}
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if (flags & (WWO_PTY|WWO_SOCKET)) {
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if ((w->ww_ob = malloc(512)) == 0) {
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wwerrno = WWE_NOMEM;
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goto bad;
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}
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w->ww_obe = w->ww_ob + 512;
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w->ww_obp = w->ww_obq = w->ww_ob;
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}
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w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l,
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w->ww_w.nr, w->ww_w.nc, sizeof (char));
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if (w->ww_win == 0)
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goto bad;
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m = 0;
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if (flags & WWO_GLASS)
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m |= WWM_GLS;
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if (flags & WWO_REVERSE)
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if (wwavailmodes & WWM_REV)
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m |= WWM_REV;
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else
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flags &= ~WWO_REVERSE;
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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for (j = w->ww_w.l; j < w->ww_w.r; j++)
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w->ww_win[i][j] = m;
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if (flags & WWO_FRAME) {
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w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l,
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w->ww_w.nr, w->ww_w.nc, sizeof (char));
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if (w->ww_fmap == 0)
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goto bad;
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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for (j = w->ww_w.l; j < w->ww_w.r; j++)
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w->ww_fmap[i][j] = 0;
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}
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w->ww_buf = (union ww_char **)
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wwalloc(w->ww_b.t, w->ww_b.l,
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w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char));
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if (w->ww_buf == 0)
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goto bad;
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for (i = w->ww_b.t; i < w->ww_b.b; i++)
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for (j = w->ww_b.l; j < w->ww_b.r; j++)
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w->ww_buf[i][j].c_w = ' ';
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w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short));
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if (w->ww_nvis == 0) {
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wwerrno = WWE_NOMEM;
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goto bad;
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}
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w->ww_nvis -= w->ww_w.t;
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nvis = m ? 0 : w->ww_w.nc;
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for (i = w->ww_w.t; i < w->ww_w.b; i++)
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w->ww_nvis[i] = nvis;
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w->ww_state = WWS_INITIAL;
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w->ww_oflags = flags;
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return wwindex[w->ww_index] = w;
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bad:
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if (w != 0) {
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if (w->ww_win != 0)
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wwfree(w->ww_win, w->ww_w.t);
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if (w->ww_fmap != 0)
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wwfree(w->ww_fmap, w->ww_w.t);
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if (w->ww_buf != 0)
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wwfree((char **)w->ww_buf, w->ww_b.t);
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if (w->ww_nvis != 0)
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free((char *)(w->ww_nvis + w->ww_w.t));
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if (w->ww_ob != 0)
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free(w->ww_ob);
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if (w->ww_pty >= 0)
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(void) close(w->ww_pty);
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if (w->ww_socket >= 0)
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(void) close(w->ww_socket);
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free((char *)w);
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}
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return 0;
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}
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