BSD 4_3 release

[unix-history] / usr / src / ucb / window / ttinit.c

#ifndef lint
static char sccsid[] = "@(#)ttinit.c    3.14 4/24/85";
#endif

/*
* Copyright (c) 1983 Regents of the University of California,
* All rights reserved.  Redistribution permitted subject to
* the terms of the Berkeley Software License Agreement.
*/

#include "ww.h"
#include "tt.h"

int tt_h19();
int tt_h29();
int tt_f100();
int tt_tvi925();
int tt_generic();
struct tt_tab tt_tab[] = {
       { "h19",        3, tt_h19 },
       { "h29",        3, tt_h29 },
       { "f100",       4, tt_f100 },
       { "tvi925",     6, tt_tvi925 },
       { "generic",    0, tt_generic },
       0
};

ttinit()
{
       register struct tt_tab *tp;
       register char *p, *q;
       register char *t;
       struct winsize winsize;

       tt_strp = tt_strings;

       /*
        * Set output buffer size to about 1 second of output time.
        */
       tt_obp = tt_ob;
       tt_obe = tt_ob + MIN(wwbaud/10, sizeof tt_ob);

       /*
        * Use the standard name of the terminal (i.e. the second
        * name in termcap).
        */
       for (p = wwtermcap; *p && *p != '|' && *p != ':'; p++)
               ;
       if (*p == '|')
               p++;
       for (q = p; *q && *q != '|' && *q != ':'; q++)
               ;
       if (q != p && (t = malloc((unsigned) (q - p + 1))) != 0) {
               wwterm = t;
               while (p < q)
                       *t++ = *p++;
               *t = 0;
       }
       for (tp = tt_tab; tp->tt_name != 0; tp++)
               if (strncmp(tp->tt_name, wwterm, tp->tt_len) == 0)
                       break;
       if (tp->tt_name == 0) {
               wwerrno = WWE_BADTERM;
               return -1;
       }
       if ((*tp->tt_func)() < 0) {
               wwerrno = WWE_CANTDO;
               return -1;
       }
       if (ioctl(0, (int)TIOCGWINSZ, (char *)&winsize) >= 0 &&
           winsize.ws_row != 0 && winsize.ws_col != 0) {
               tt.tt_nrow = winsize.ws_row;
               tt.tt_ncol = winsize.ws_col;
       }
       return 0;
}