/*      @(#)ttinit.c    8.1 (Berkeley) 6/6/93   */
/*      $NetBSD: ttinit.c,v 1.9 2003/08/13 15:21:07 itojun Exp $        */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <stdlib.h>
#include <string.h>
#include "ww.h"
#include "tt.h"

struct tt tt;
char tt_strings[1024];          /* string buffer */
char *tt_strp;                  /* pointer for it */
char *tt_ob;
char *tt_obp;
char *tt_obe;

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 },
        { "zapple",     6, tt_zapple },
        { "zentec",     6, tt_zentec },
        { "generic",    0, tt_generic },
        { 0,            0, 0 }
};

int
ttinit(void)
{
        int i;
        struct tt_tab *tp;
        char *p, *q;
        char *t;

        tt_strp = tt_strings;

        /*
         * Set output buffer size to about 1 second of output time.
         */
        i = MIN(wwbaud/10, 512);
        if ((tt_ob = malloc((unsigned) i)) == NULL) {
                wwerrno = WWE_NOMEM;
                return -1;
        }
        tt_obp = tt_ob;
        tt_obe = tt_ob + i;

        /*
         * 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))) != NULL) {
                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 (wwgetttysize(0, &tt.tt_nrow, &tt.tt_ncol) < 0)
                return -1;
        tt.tt_scroll_top = 0;
        tt.tt_scroll_bot = tt.tt_nrow - 1;
        return 0;
}