usr/src/usr.bin/window/ttinit.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)ttinit.c    3.20 (Berkeley) %G%";
#endif /* not lint */

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

int tt_h19();
int tt_h29();
int tt_f100();
int tt_tvi925();
int tt_wyse75();
int tt_wyse60();
int tt_zentec();
int tt_generic();
struct tt_tab tt_tab[] = {
        { "h19",        3, tt_h19 },
        { "h29",        3, tt_h29 },
        { "f100",       4, tt_f100 },
        { "tvi925",     6, tt_tvi925 },
        { "wyse75",     6, tt_wyse75 },
        { "wyse60",     6, tt_wyse60 },
        { "w60",        3, tt_wyse60 },
        { "zentec",     6, tt_zentec },
        { "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;
        }
        tt.tt_scroll_top = 0;
        tt.tt_scroll_bot = tt.tt_nrow - 1;
        if (ioctl(0, 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;
}