127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/* $NetBSD: setupterm.c,v 1.4 2013/06/07 13:16:18 roy Exp $ */
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/*
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* Copyright (c) 2009, 2011 The NetBSD Foundation, Inc.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roy Marples.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: setupterm.c,v 1.4 2013/06/07 13:16:18 roy Exp $");
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#include <assert.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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#include <term_private.h>
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#include <term.h>
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#define reterr(code, msg) \
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do { \
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if (errret == NULL) \
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errx(EXIT_FAILURE, msg); \
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else { \
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*errret = code; \
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return ERR; \
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} \
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} while (0 /* CONSTCOND */)
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#define reterrarg(code, msg, arg) \
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do { \
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if (errret == NULL) \
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errx(EXIT_FAILURE, msg, arg); \
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else { \
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*errret = code; \
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return ERR; \
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} \
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} while (0 /* CONSTCOND */)
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int
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ti_setupterm(TERMINAL **nterm, const char *term, int fildes, int *errret)
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{
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int error;
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_DIAGASSERT(nterm != NULL);
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if (term == NULL)
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term = getenv("TERM");
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if (term == NULL || *term == '\0') {
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*nterm = NULL;
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reterr(0, "TERM environment variable not set");
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}
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if (fildes == STDOUT_FILENO && !isatty(fildes))
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fildes = STDERR_FILENO;
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*nterm = calloc(1, sizeof(**nterm));
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if (*nterm == NULL)
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reterr(-1, "not enough memory to create terminal structure");
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error = _ti_getterm(*nterm, term, 0);
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if (error != 1) {
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del_curterm(*nterm);
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*nterm = NULL;
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switch (error) {
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case -1:
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reterr(error, "cannot access the terminfo database");
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/* NOTREACHED */
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case 0:
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reterrarg(error,
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"%s: terminal not listed in terminfo datase",
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term);
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/* NOTREACHED */
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default:
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reterr(-1, "unknown error");
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/* NOTREACHED */
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}
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}
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(*nterm)->fildes = fildes;
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_ti_setospeed(*nterm);
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if (t_generic_type(*nterm))
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reterrarg(0, "%s: generic terminal", term);
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if (t_hard_copy(*nterm))
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reterrarg(1, "%s: hardcopy terminal", term);
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/* POSIX requires 1 for success */
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if (errret)
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*errret = 1;
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return OK;
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}
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int
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setupterm(const char *term, int fildes, int *errret)
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{
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TERMINAL *nterm;
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int ret;
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if (errret != NULL)
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*errret = ERR;
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ret = ti_setupterm(&nterm, term, fildes, errret);
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if (nterm != NULL)
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set_curterm(nterm);
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return ret;
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}
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