usr.bin/window/ttinit.c

   1 /*      @(#)ttinit.c    8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: ttinit.c,v 1.9 2003/08/13 15:21:07 itojun Exp $        */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Edward Wang at The University of California, Berkeley.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include "ww.h"
  39 #include "tt.h"
  40
  41 struct tt tt;
  42 char tt_strings[1024];          /* string buffer */
  43 char *tt_strp;                  /* pointer for it */
  44 char *tt_ob;
  45 char *tt_obp;
  46 char *tt_obe;
  47
  48 struct tt_tab tt_tab[] = {
  49         { "h19",        3, tt_h19 },
  50         { "h29",        3, tt_h29 },
  51         { "f100",       4, tt_f100 },
  52         { "tvi925",     6, tt_tvi925 },
  53         { "wyse75",     6, tt_wyse75 },
  54         { "wyse60",     6, tt_wyse60 },
  55         { "w60",        3, tt_wyse60 },
  56         { "zapple",     6, tt_zapple },
  57         { "zentec",     6, tt_zentec },
  58         { "generic",    0, tt_generic },
  59         { 0,            0, 0 }
  60 };
  61
  62 int
  63 ttinit(void)
  64 {
  65         int i;
  66         struct tt_tab *tp;
  67         char *p, *q;
  68         char *t;
  69
  70         tt_strp = tt_strings;
  71
  72         /*
  73          * Set output buffer size to about 1 second of output time.
  74          */
  75         i = MIN(wwbaud/10, 512);
  76         if ((tt_ob = malloc((unsigned) i)) == NULL) {
  77                 wwerrno = WWE_NOMEM;
  78                 return -1;
  79         }
  80         tt_obp = tt_ob;
  81         tt_obe = tt_ob + i;
  82
  83         /*
  84          * Use the standard name of the terminal (i.e. the second
  85          * name in termcap).
  86          */
  87         for (p = wwtermcap; *p && *p != '|' && *p != ':'; p++)
  88                 ;
  89         if (*p == '|')
  90                 p++;
  91         for (q = p; *q && *q != '|' && *q != ':'; q++)
  92                 ;
  93         if (q != p && (t = malloc((unsigned) (q - p + 1))) != NULL) {
  94                 wwterm = t;
  95                 while (p < q)
  96                         *t++ = *p++;
  97                 *t = 0;
  98         }
  99         for (tp = tt_tab; tp->tt_name != 0; tp++)
 100                 if (strncmp(tp->tt_name, wwterm, tp->tt_len) == 0)
 101                         break;
 102         if (tp->tt_name == 0) {
 103                 wwerrno = WWE_BADTERM;
 104                 return -1;
 105         }
 106         if ((*tp->tt_func)() < 0) {
 107                 wwerrno = WWE_CANTDO;
 108                 return -1;
 109         }
 110         if (wwgetttysize(0, &tt.tt_nrow, &tt.tt_ncol) < 0)
 111                 return -1;
 112         tt.tt_scroll_top = 0;
 113         tt.tt_scroll_bot = tt.tt_nrow - 1;
 114         return 0;
 115 }