git.zerfleddert.de Git - proxmark3-svn/blob - client/jansson/memory.c

   1 /*
   2  * Copyright (c) 2009-2016 Petri Lehtinen <petri@digip.org>
   3  * Copyright (c) 2011-2012 Basile Starynkevitch <basile@starynkevitch.net>
   4  *
   5  * Jansson is free software; you can redistribute it and/or modify it
   6  * under the terms of the MIT license. See LICENSE for details.
   7  */
   8
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "jansson.h"
  13 #include "jansson_private.h"
  14
  15 /* C89 allows these to be macros */
  16 #undef malloc
  17 #undef free
  18
  19 /* memory function pointers */
  20 static json_malloc_t do_malloc = malloc;
  21 static json_free_t do_free = free;
  22
  23 void *jsonp_malloc(size_t size)
  24 {
  25     if(!size)
  26         return NULL;
  27
  28     return (*do_malloc)(size);
  29 }
  30
  31 void jsonp_free(void *ptr)
  32 {
  33     if(!ptr)
  34         return;
  35
  36     (*do_free)(ptr);
  37 }
  38
  39 char *jsonp_strdup(const char *str)
  40 {
  41     return jsonp_strndup(str, strlen(str));
  42 }
  43
  44 char *jsonp_strndup(const char *str, size_t len)
  45 {
  46     char *new_str;
  47
  48     new_str = jsonp_malloc(len + 1);
  49     if(!new_str)
  50         return NULL;
  51
  52     memcpy(new_str, str, len);
  53     new_str[len] = '\0';
  54     return new_str;
  55 }
  56
  57 void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn)
  58 {
  59     do_malloc = malloc_fn;
  60     do_free = free_fn;
  61 }
  62
  63 void json_get_alloc_funcs(json_malloc_t *malloc_fn, json_free_t *free_fn)
  64 {
  65     if (malloc_fn)
  66         *malloc_fn = do_malloc;
  67     if (free_fn)
  68         *free_fn = do_free;
  69 }