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/* $OpenBSD: util.c,v 1.7 2002/02/16 21:28:01 millert Exp $ */
/* $NetBSD: util.c,v 1.5 1996/08/31 20:58:29 mycroft Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratories.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* from: @(#)util.c 8.1 (Berkeley) 6/6/93
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <sys/types.h>
#include "config.h"
static void nomem(void);
static void vxerror(const char *, int, const char *, va_list);
/*
* Malloc, with abort on error.
*/
void *
emalloc(size)
size_t size;
{
void *p;
if ((p = malloc(size)) == NULL)
nomem();
memset(p, 0, size);
return (p);
}
/*
* Realloc, with abort on error.
*/
void *
erealloc(p, size)
void *p;
size_t size;
{
if ((p = realloc(p, size)) == NULL)
nomem();
return (p);
}
static void
nomem()
{
(void)fprintf(stderr, "config: out of memory\n");
exit(1);
}
/*
* Prepend the source path to a file name.
*/
char *
sourcepath(file)
const char *file;
{
register char *cp;
cp = emalloc(strlen(srcdir) + 1 + strlen(file) + 1);
(void)sprintf(cp, "%s/%s", srcdir, file);
return (cp);
}
static struct nvlist *nvhead;
struct nvlist *
newnv(name, str, ptr, i, next)
const char *name, *str;
void *ptr;
int i;
struct nvlist *next;
{
register struct nvlist *nv;
if ((nv = nvhead) == NULL)
nv = emalloc(sizeof(*nv));
else
nvhead = nv->nv_next;
nv->nv_next = next;
nv->nv_name = name;
if (ptr == NULL)
nv->nv_str = str;
else {
if (str != NULL)
panic("newnv");
nv->nv_ptr = ptr;
}
nv->nv_int = i;
return (nv);
}
/*
* Free an nvlist structure (just one).
*/
void
nvfree(nv)
register struct nvlist *nv;
{
nv->nv_next = nvhead;
nvhead = nv;
}
/*
* Free an nvlist (the whole list).
*/
void
nvfreel(nv)
register struct nvlist *nv;
{
register struct nvlist *next;
for (; nv != NULL; nv = next) {
next = nv->nv_next;
nv->nv_next = nvhead;
nvhead = nv;
}
}
/*
* External (config file) error. Complain, using current file
* and line number.
*/
void
#ifdef __STDC__
error(const char *fmt, ...)
#else
error(fmt, va_alist)
const char *fmt;
va_dcl
#endif
{
va_list ap;
extern const char *yyfile;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
vxerror(yyfile, currentline(), fmt, ap);
va_end(ap);
}
/*
* Delayed config file error (i.e., something was wrong but we could not
* find out about it until later).
*/
void
#ifdef __STDC__
xerror(const char *file, int line, const char *fmt, ...)
#else
xerror(file, line, fmt, va_alist)
const char *file;
int line;
const char *fmt;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
vxerror(file, line, fmt, ap);
va_end(ap);
}
/*
* Internal form of error() and xerror().
*/
static void
vxerror(file, line, fmt, ap)
const char *file;
int line;
const char *fmt;
va_list ap;
{
(void)fprintf(stderr, "%s:%d: ", file, line);
(void)vfprintf(stderr, fmt, ap);
(void)putc('\n', stderr);
errors++;
}
/*
* Internal error, abort.
*/
__dead void
#ifdef __STDC__
panic(const char *fmt, ...)
#else
panic(fmt, va_alist)
const char *fmt;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
(void)fprintf(stderr, "config: panic: ");
(void)vfprintf(stderr, fmt, ap);
(void)putc('\n', stderr);
va_end(ap);
exit(2);
}
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