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/***********************************************************************
* $Id$
* Copyright 2009 Aplix Corporation. All rights reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***********************************************************************/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "misc.h"
#include "os.h" /* to get va_copy on windows */
extern const char *progname;
/***********************************************************************
* memory allocation wrappers
*/
void *
memalloc(size_t size)
{
void *ptr = malloc(size);
if (!ptr)
errorexit("out of memory");
/* Zero initialise memory from memalloc. */
memset(ptr, 0, size);
return ptr;
}
void *
memrealloc(void *ptr, size_t size)
{
void *newptr = realloc(ptr, size);
if (!newptr)
errorexit("out of memory");
return newptr;
}
void
memfree(void *ptr)
{
*(int *)ptr = 0xfefefefe;
free(ptr);
}
/***********************************************************************
* vmemprintf, memprintf : allocate buffer and sprintf into it
*/
char *
memprintf(const char *format, ...)
{
va_list ap;
char *buf;
va_start(ap, format);
buf = vmemprintf(format, ap);
va_end(ap);
return buf;
}
char *
vmemprintf(const char *format, va_list ap)
{
char *buf;
unsigned int max, len;
va_list ap2;
max = 16;
for (;;) {
va_copy(ap2, ap);
buf = memalloc(max);
len = vsnprintf(buf, max, format, ap2);
va_end(ap2);
if (len < max)
break;
memfree(buf);
max *= 2;
}
return buf;
}
/***********************************************************************
* errorexit : print error message then exit
*/
void
vlocerrorexit(const char *filename, unsigned int linenum,
const char *format, va_list ap)
{
if (filename)
fprintf(stderr, linenum ? "%s: %i: " : "%s: ", filename, linenum);
vfprintf(stderr, format, ap);
fputc('\n', stderr);
exit(1);
}
void
locerrorexit(const char *filename, unsigned int linenum,
const char *format, ...)
{
va_list ap;
va_start(ap, format);
vlocerrorexit(filename, linenum, format, ap);
va_end(ap);
}
void
errorexit(const char *format, ...)
{
va_list ap;
va_start(ap, format);
vlocerrorexit(0, 0, format, ap);
va_end(ap);
}
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