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132 lines
2.1 KiB
132 lines
2.1 KiB
/*
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* Wrappers around standard functions that use the heap.
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*
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* Copyright (c) 2010 Riverbank Computing Limited <info@riverbankcomputing.com>
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*
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* This file is part of SIP.
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*
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* This copy of SIP is licensed for use under the terms of the SIP License
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* Agreement. See the file LICENSE for more details.
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*
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* This copy of SIP may also used under the terms of the GNU General Public
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* License v2 or v3 as published by the Free Software Foundation which can be
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* found in the files LICENSE-GPL2 and LICENSE-GPL3 included in this package.
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*
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* SIP is supplied WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <sys/types.h>
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#include "sip.h"
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static void nomem(void);
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/*
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* Wrap malloc() and handle any errors.
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*/
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void *sipMalloc(size_t n)
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{
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void *h;
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if ((h = malloc(n)) == NULL)
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nomem();
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memset(h, 0, n);
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return h;
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}
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/*
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* Wrap calloc() and handle any errors.
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*/
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void *sipCalloc(size_t nr, size_t n)
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{
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void *h;
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if ((h = calloc(nr, n)) == NULL)
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nomem();
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return h;
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}
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/*
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* Wrap strdup() and handle any errors.
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*/
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char *sipStrdup(const char *s)
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{
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char *h;
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if ((h = strdup(s)) == NULL)
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nomem();
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return h;
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}
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/*
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* Return a string on the heap which is the concatenation of all the arguments.
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*/
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char *concat(const char *s, ...)
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{
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const char *sp;
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char *new;
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size_t len;
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va_list ap;
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/* Find the length of the final string. */
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len = 1;
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va_start(ap,s);
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for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
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len += strlen(sp);
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va_end(ap);
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/* Create the new string. */
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new = sipMalloc(len);
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*new = '\0';
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va_start(ap,s);
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for (sp = s; sp != NULL; sp = va_arg(ap, const char *))
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strcat(new,sp);
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va_end(ap);
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return new;
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}
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/*
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* Append a string to another that is on the heap.
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*/
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void append(char **s, const char *new)
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{
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if ((*s = realloc(*s,strlen(*s) + strlen(new) + 1)) == NULL)
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nomem();
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strcat(*s,new);
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}
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/*
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* Display a standard error message when the heap is exhausted.
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*/
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static void nomem(void)
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{
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fatal("Unable to allocate memory on the heap\n");
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}
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