usr.bin/window/wwopen.c

   1 /*      $NetBSD: wwopen.c,v 1.11 2002/08/12 02:44:18 itojun 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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)wwopen.c    8.2 (Berkeley) 4/28/95";
  39 #else
  40 __RCSID("$NetBSD: wwopen.c,v 1.11 2002/08/12 02:44:18 itojun Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include <sys/types.h>
  45 #include <sys/socket.h>
  46 #include <fcntl.h>
  47 #include <stdlib.h>
  48 #include <unistd.h>
  49 #include "ww.h"
  50
  51 struct ww *
  52 wwopen(int type, int oflags, int nrow, int ncol, int row, int col, int nline)
  53 {
  54         struct ww *w;
  55         int i, j;
  56         char m;
  57         short nvis;
  58
  59         w = (struct ww *)calloc(1, sizeof (struct ww));
  60         if (w == 0) {
  61                 wwerrno = WWE_NOMEM;
  62                 goto bad;
  63         }
  64         w->ww_pty = -1;
  65         w->ww_socket = -1;
  66
  67         for (i = 0; i < NWW && wwindex[i] != 0; i++)
  68                 ;
  69         if (i >= NWW) {
  70                 wwerrno = WWE_TOOMANY;
  71                 goto bad;
  72         }
  73         w->ww_index = i;
  74
  75         if (nline < nrow)
  76                 nline = nrow;
  77
  78         w->ww_w.t = row;
  79         w->ww_w.b = row + nrow;
  80         w->ww_w.l = col;
  81         w->ww_w.r = col + ncol;
  82         w->ww_w.nr = nrow;
  83         w->ww_w.nc = ncol;
  84
  85         w->ww_b.t = row;
  86         w->ww_b.b = row + nline;
  87         w->ww_b.l = col;
  88         w->ww_b.r = col + ncol;
  89         w->ww_b.nr = nline;
  90         w->ww_b.nc = ncol;
  91
  92         w->ww_i.t = MAX(w->ww_w.t, 0);
  93         w->ww_i.b = MIN(w->ww_w.b, wwnrow);
  94         w->ww_i.l = MAX(w->ww_w.l, 0);
  95         w->ww_i.r = MIN(w->ww_w.r, wwncol);
  96         w->ww_i.nr = w->ww_i.b - w->ww_i.t;
  97         w->ww_i.nc = w->ww_i.r - w->ww_i.l;
  98
  99         w->ww_cur.r = w->ww_w.t;
 100         w->ww_cur.c = w->ww_w.l;
 101
 102         w->ww_type = type;
 103         switch (type) {
 104         case WWT_PTY:
 105                 if (wwgetpty(w) < 0)
 106                         goto bad;
 107                 break;
 108         case WWT_SOCKET:
 109             {
 110                 int d[2];
 111                 if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, d) < 0) {
 112                         wwerrno = WWE_SYS;
 113                         goto bad;
 114                 }
 115                 (void) fcntl(d[0], F_SETFD, 1);
 116                 (void) fcntl(d[1], F_SETFD, 1);
 117                 w->ww_pty = d[0];
 118                 w->ww_socket = d[1];
 119                 break;
 120             }
 121         }
 122         if (type != WWT_INTERNAL) {
 123                 if ((w->ww_ob = malloc(512)) == 0) {
 124                         wwerrno = WWE_NOMEM;
 125                         goto bad;
 126                 }
 127                 w->ww_obe = w->ww_ob + 512;
 128                 w->ww_obp = w->ww_obq = w->ww_ob;
 129                 if (w->ww_pty >= wwdtablesize)
 130                         wwdtablesize = w->ww_pty + 1;
 131         }
 132
 133         w->ww_win = wwalloc(w->ww_w.t, w->ww_w.l,
 134                 w->ww_w.nr, w->ww_w.nc, sizeof (char));
 135         if (w->ww_win == 0)
 136                 goto bad;
 137         m = 0;
 138         if (oflags & WWO_GLASS)
 139                 m |= WWM_GLS;
 140         if (oflags & WWO_REVERSE) {
 141                 if (wwavailmodes & WWM_REV)
 142                         m |= WWM_REV;
 143                 else    oflags &= ~WWO_REVERSE;
 144         }
 145         for (i = w->ww_w.t; i < w->ww_w.b; i++)
 146                 for (j = w->ww_w.l; j < w->ww_w.r; j++)
 147                         w->ww_win[i][j] = m;
 148
 149         if (oflags & WWO_FRAME) {
 150                 w->ww_fmap = wwalloc(w->ww_w.t, w->ww_w.l,
 151                         w->ww_w.nr, w->ww_w.nc, sizeof (char));
 152                 if (w->ww_fmap == 0)
 153                         goto bad;
 154                 for (i = w->ww_w.t; i < w->ww_w.b; i++)
 155                         for (j = w->ww_w.l; j < w->ww_w.r; j++)
 156                                 w->ww_fmap[i][j] = 0;
 157         }
 158
 159         w->ww_buf = (union ww_char **)
 160                 wwalloc(w->ww_b.t, w->ww_b.l,
 161                         w->ww_b.nr, w->ww_b.nc, sizeof (union ww_char));
 162         if (w->ww_buf == 0)
 163                 goto bad;
 164         for (i = w->ww_b.t; i < w->ww_b.b; i++)
 165                 for (j = w->ww_b.l; j < w->ww_b.r; j++)
 166                         w->ww_buf[i][j].c_w = ' ';
 167
 168         w->ww_nvis = (short *)malloc((unsigned) w->ww_w.nr * sizeof (short));
 169         if (w->ww_nvis == 0) {
 170                 wwerrno = WWE_NOMEM;
 171                 goto bad;
 172         }
 173         w->ww_nvis -= w->ww_w.t;
 174         nvis = m ? 0 : w->ww_w.nc;
 175         for (i = w->ww_w.t; i < w->ww_w.b; i++)
 176                 w->ww_nvis[i] = nvis;
 177
 178         w->ww_state = WWS_INITIAL;
 179         CLR(w->ww_oflags, WWO_ALLFLAGS);
 180         SET(w->ww_oflags, oflags);
 181         return wwindex[w->ww_index] = w;
 182 bad:
 183         if (w != 0) {
 184                 if (w->ww_win != 0)
 185                         wwfree(w->ww_win, w->ww_w.t);
 186                 if (w->ww_fmap != 0)
 187                         wwfree(w->ww_fmap, w->ww_w.t);
 188                 if (w->ww_buf != 0)
 189                         wwfree((char **)w->ww_buf, w->ww_b.t);
 190                 if (w->ww_nvis != 0)
 191                         free((char *)(w->ww_nvis + w->ww_w.t));
 192                 if (w->ww_ob != 0)
 193                         free(w->ww_ob);
 194                 if (w->ww_pty >= 0)
 195                         (void) close(w->ww_pty);
 196                 if (w->ww_socket >= 0)
 197                         (void) close(w->ww_socket);
 198                 free((char *)w);
 199         }
 200         return 0;
 201 }