window/wwopen.c

   1 /*      $NetBSD: wwopen.c,v 1.9 1998/08/25 20:59:43 ross Exp $  */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)wwopen.c    8.2 (Berkeley) 4/28/95";
  43 #else
  44 __RCSID("$NetBSD: wwopen.c,v 1.9 1998/08/25 20:59:43 ross Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include <sys/types.h>
  49 #include <sys/socket.h>
  50 #include <fcntl.h>
  51 #include <stdlib.h>
  52 #include <unistd.h>
  53 #include "ww.h"
  54
  55 struct ww *
  56 wwopen(type, oflags, nrow, ncol, row, col, nline)
  57         int type, oflags, nrow, ncol, row, col, nline;
  58 {
  59         struct ww *w;
  60         int i, j;
  61         char m;
  62         short nvis;
  63
  64         w = (struct ww *)calloc(sizeof (struct ww), 1);
  65         if (w == 0) {
  66                 wwerrno = WWE_NOMEM;
  67                 goto bad;
  68         }
  69         w->ww_pty = -1;
  70         w->ww_socket = -1;
  71
  72         for (i = 0; i < NWW && wwindex[i] != 0; i++)
  73                 ;
  74         if (i >= NWW) {
  75                 wwerrno = WWE_TOOMANY;
  76                 goto bad;
  77         }
  78         w->ww_index = i;
  79
  80         if (nline < nrow)
  81                 nline = nrow;
  82
  83         w->ww_w.t = row;
  84         w->ww_w.b = row + nrow;
  85         w->ww_w.l = col;
  86         w->ww_w.r = col + ncol;
  87         w->ww_w.nr = nrow;
  88         w->ww_w.nc = ncol;
  89
  90         w->ww_b.t = row;
  91         w->ww_b.b = row + nline;
  92         w->ww_b.l = col;
  93         w->ww_b.r = col + ncol;
  94         w->ww_b.nr = nline;
  95         w->ww_b.nc = ncol;
  96
  97         w->ww_i.t = MAX(w->ww_w.t, 0);
  98         w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  99         w->ww_i.l = MAX(w->ww_w.l, 0);
 100         w->ww_i.r = MIN(w->ww_w.r, wwncol);
 101         w->ww_i.nr = w->ww_i.b - w->ww_i.t;
 102         w->ww_i.nc = w->ww_i.r - w->ww_i.l;
 103
 104         w->ww_cur.r = w->ww_w.t;
 105         w->ww_cur.c = w->ww_w.l;
 106
 107         w->ww_type = type;
 108         switch (type) {
 109         case WWT_PTY:
 110                 if (wwgetpty(w) < 0)
 111                         goto bad;
 112                 break;
 113         case WWT_SOCKET:
 114             {
 115                 int d[2];
 116                 if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, d) < 0) {
 117                         wwerrno = WWE_SYS;
 118                         goto bad;
 119                 }
 120                 (void) fcntl(d[0], F_SETFD, 1);
 121                 (void) fcntl(d[1], F_SETFD, 1);
 122                 w->ww_pty = d[0];
 123                 w->ww_socket = d[1];
 124                 break;
 125             }
 126         }
 127         if (type != WWT_INTERNAL) {
 128                 if ((w->ww_ob = malloc(512)) == 0) {
 129                         wwerrno = WWE_NOMEM;
 130                         goto bad;
 131                 }
 132                 w->ww_obe = w->ww_ob + 512;
 133                 w->ww_obp = w->ww_obq = w->ww_ob;
 134                 if (w->ww_pty >= wwdtablesize)
 135                         wwdtablesize = w->ww_pty + 1;
 136         }
 137
 138         w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l,
 139                 w->ww_w.nr, w->ww_w.nc, sizeof (char));
 140         if (w->ww_win == 0)
 141                 goto bad;
 142         m = 0;
 143         if (oflags & WWO_GLASS)
 144                 m |= WWM_GLS;
 145         if (oflags & WWO_REVERSE) {
 146                 if (wwavailmodes & WWM_REV)
 147                         m |= WWM_REV;
 148                 else    oflags &= ~WWO_REVERSE;
 149         }
 150         for (i = w->ww_w.t; i < w->ww_w.b; i++)
 151                 for (j = w->ww_w.l; j < w->ww_w.r; j++)
 152                         w->ww_win[i][j] = m;
 153
 154         if (oflags & WWO_FRAME) {
 155                 w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l,
 156                         w->ww_w.nr, w->ww_w.nc, sizeof (char));
 157                 if (w->ww_fmap == 0)
 158                         goto bad;
 159                 for (i = w->ww_w.t; i < w->ww_w.b; i++)
 160                         for (j = w->ww_w.l; j < w->ww_w.r; j++)
 161                                 w->ww_fmap[i][j] = 0;
 162         }
 163
 164         w->ww_buf = (union ww_char **)
 165                 wwalloc(w->ww_b.t, w->ww_b.l,
 166                         w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char));
 167         if (w->ww_buf == 0)
 168                 goto bad;
 169         for (i = w->ww_b.t; i < w->ww_b.b; i++)
 170                 for (j = w->ww_b.l; j < w->ww_b.r; j++)
 171                         w->ww_buf[i][j].c_w = ' ';
 172
 173         w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short));
 174         if (w->ww_nvis == 0) {
 175                 wwerrno = WWE_NOMEM;
 176                 goto bad;
 177         }
 178         w->ww_nvis -= w->ww_w.t;
 179         nvis = m ? 0 : w->ww_w.nc;
 180         for (i = w->ww_w.t; i < w->ww_w.b; i++)
 181                 w->ww_nvis[i] = nvis;
 182
 183         w->ww_state = WWS_INITIAL;
 184         CLR(w->ww_oflags, WWO_ALLFLAGS);
 185         SET(w->ww_oflags, oflags);
 186         return wwindex[w->ww_index] = w;
 187 bad:
 188         if (w != 0) {
 189                 if (w->ww_win != 0)
 190                         wwfree(w->ww_win, w->ww_w.t);
 191                 if (w->ww_fmap != 0)
 192                         wwfree(w->ww_fmap, w->ww_w.t);
 193                 if (w->ww_buf != 0)
 194                         wwfree((char **)w->ww_buf, w->ww_b.t);
 195                 if (w->ww_nvis != 0)
 196                         free((char *)(w->ww_nvis + w->ww_w.t));
 197                 if (w->ww_ob != 0)
 198                         free(w->ww_ob);
 199                 if (w->ww_pty >= 0)
 200                         (void) close(w->ww_pty);
 201                 if (w->ww_socket >= 0)
 202                         (void) close(w->ww_socket);
 203                 free((char *)w);
 204         }
 205         return 0;
 206 }