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/*
* Wrappers around standard functions that use the heap.
*
* Copyright (c) 2007
* Riverbank Computing Limited <info@riverbankcomputing.co.uk>
*
* This file is part of SIP.
*
* This copy of SIP is licensed for use under the terms of the SIP License
* Agreement. See the file LICENSE for more details.
*
* SIP is supplied WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include "sip.h"
static void nomem(void);
/*
* Wrap malloc() and handle any errors.
*/
void *sipMalloc(size_t n)
{
void *h;
if ((h = malloc(n)) == NULL)
nomem();
return h;
}
/*
* Wrap strdup() and handle any errors.
*/
char *sipStrdup(char *s)
{
char *h;
if ((h = strdup(s)) == NULL)
nomem();
return h;
}
/*
* Return a string on the heap which is the concatonation of all the arguments.
*/
char *concat(const char *s, ...)
{
const char *sp;
char *new;
size_t len;
va_list ap;
/* Find the length of the final string. */
len = 1;
va_start(ap,s);
for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
len += strlen(sp);
va_end(ap);
/* Create the new string. */
new = sipMalloc(len);
*new = '\0';
va_start(ap,s);
for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
strcat(new,sp);
va_end(ap);
return new;
}
/*
* Append a string to another that is on the heap.
*/
void append(char **s,char *new)
{
if ((*s = realloc(*s,strlen(*s) + strlen(new) + 1)) == NULL)
nomem();
strcat(*s,new);
}
/*
* Display a standard error message when the heap is exhausted.
*/
static void nomem(void)
{
fatal("Unable to allocate memory on the heap\n");
}
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