245e532934
This is particularly useful in modular situations where the allocation functions are either unknown or private. For instance, in such cases, the caller of json_dumps() has no way to free the returned buffer.
70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
/*
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* Copyright (c) 2009-2014 Petri Lehtinen <petri@digip.org>
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* Copyright (c) 2011-2012 Basile Starynkevitch <basile@starynkevitch.net>
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*
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* Jansson is free software; you can redistribute it and/or modify it
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* under the terms of the MIT license. See LICENSE for details.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "jansson.h"
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#include "jansson_private.h"
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/* C89 allows these to be macros */
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#undef malloc
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#undef free
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/* memory function pointers */
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static json_malloc_t do_malloc = malloc;
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static json_free_t do_free = free;
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void *jsonp_malloc(size_t size)
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{
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if(!size)
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return NULL;
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return (*do_malloc)(size);
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}
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void jsonp_free(void *ptr)
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{
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if(!ptr)
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return;
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(*do_free)(ptr);
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}
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char *jsonp_strdup(const char *str)
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{
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return jsonp_strndup(str, strlen(str));
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}
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char *jsonp_strndup(const char *str, size_t len)
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{
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char *new_str;
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new_str = jsonp_malloc(len + 1);
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if(!new_str)
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return NULL;
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memcpy(new_str, str, len);
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new_str[len] = '\0';
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return new_str;
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}
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void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn)
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{
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do_malloc = malloc_fn;
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do_free = free_fn;
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}
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void json_get_alloc_funcs(json_malloc_t *malloc_fn, json_free_t *free_fn)
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{
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if (malloc_fn)
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*malloc_fn = do_malloc;
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if (free_fn)
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*free_fn = do_free;
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}
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