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Revision 1.8, Wed Oct 5 10:46:08 2011 UTC (3 years ago) by roy
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, agc-symver-base, agc-symver
Branch point for: yamt-pagecache, tls-maxphys
Changes since 1.7: +44 -2 lines

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.

/* $NetBSD: curterm.c,v 1.8 2011/10/05 10:46:08 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 1.8 2011/10/05 10:46:08 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 = 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)) == strlen(p)) {
			p += n;
			l -= n;
			*p++ = '|';
			l--;
			if (nterm->_alias  &&
				(n = strlcpy(p, nterm->_alias, l)) == strlen(p))
			{
				p += n;
				l -= n;
				*p++ = '|';
				l--;
			}
			if (nterm->desc  &&
				(n = strlcpy(p, nterm->desc, l)) == strlen(p))
			{
				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);
	return OK;
}

char *
termname(void)
{

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

static const char * nullname = '\0';

char *
longname(void)
{

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