/* $NetBSD: curterm.c,v 1.14 2020/05/30 16:03:58 roy Exp $ */

/*
 * Copyright (c) 2009, 2011 The NetBSD Foundation, Inc.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Roy Marples.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <sys/cdefs.h>
__RCSID("$NetBSD: curterm.c,v 1.14 2020/05/30 16:03:58 roy Exp $");

#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <term_private.h>
#include <term.h>
#include <termios.h>
#include <stdio.h>

TERMINAL *cur_term;

/*
 * There is no standard way of getting a list of aliases for the
 * terminal. However, some applications such as telnet want to know this.
 * ncurses dumps the terminfo header into an undefined variable ttytype
 * and these applications then parse it to work out the aliases.
 * We should do the same for now, until a standard mechanism for getting
 * the information is available or the need for it goes away.
 */
#define NAMESIZE        256
char ttytype[NAMESIZE];

static const speed_t bauds[] = {
        0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 2400, 4800, 9600,
        19200, 38400, 57600, 115200, 230400, 460800, 921600
};

void
_ti_setospeed(TERMINAL *term)
{
        struct termios termios;
        speed_t os;
        size_t i;

        _DIAGASSERT(term != NULL);

        term->_ospeed = 0;
        if (tcgetattr(term->fildes, &termios) == 0) {
                os = cfgetospeed(&termios);
                for (i = 0; i < __arraycount(bauds); i++)
                        if (bauds[i] == os) {
                                term->_ospeed = (short)i;
                                break;
                        }
        }
}

TERMINAL *
set_curterm(TERMINAL *nterm)
{
        TERMINAL *oterm;
        size_t l, n;
        char *p;

        oterm = cur_term;
        cur_term = nterm;

        ospeed = 0;
        if (cur_term == NULL)
                PC = '\0';
        else {
                if (pad_char == NULL)
                        PC = '\0';
                else
                        PC = *pad_char;
                _ti_setospeed(nterm);
                ospeed = nterm->_ospeed;

                p = ttytype;
                l = sizeof(ttytype);
                if ((n = strlcpy(p, nterm->name, l)) < l) {
                        p += n;
                        l -= n;
                        *p++ = '|';
                        l--;
                        if (nterm->_alias != NULL &&
                            (n = strlcpy(p, nterm->_alias, l)) < l)
                        {
                                p += n;
                                l -= n;
                                *p++ = '|';
                                l--;
                        }
                        if (nterm->desc != NULL &&
                            (n = strlcpy(p, nterm->desc, l)) < l)
                        {
                                p += n;
                                l -= n;
                                *p++ = '|';
                                l--;
                        }
                        p--;
                }
                *p = '\0';
        }

        return oterm;
}

int
del_curterm(TERMINAL *oterm)
{

        if (oterm == NULL)
                return ERR;
        free(oterm->_area);
        free(oterm->strs);
        free(oterm->nums);
        free(oterm->flags);
        free(oterm->_userdefs);
        free(oterm->_buf);
        free(oterm);
        if (oterm == cur_term)
                cur_term = NULL;
        return OK;
}

char *
termname(void)
{

        _DIAGASSERT(cur_term != NULL);
        return __UNCONST(cur_term->name);
}

static const char * nullname = "";

char *
longname(void)
{

        _DIAGASSERT(cur_term != NULL);
        if (cur_term->desc == NULL)
                return __UNCONST(nullname);
        return __UNCONST(cur_term->desc);
}