client/deps/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     if (!size)
  25         return NULL;
  26
  27     return (*do_malloc)(size);
  28 }
  29
  30 void jsonp_free(void *ptr) {
  31     if (!ptr)
  32         return;
  33
  34     (*do_free)(ptr);
  35 }
  36
  37 char *jsonp_strdup(const char *str) {
  38     return jsonp_strndup(str, strlen(str));
  39 }
  40
  41 char *jsonp_strndup(const char *str, size_t len) {
  42     char *new_str;
  43
  44     new_str = jsonp_malloc(len + 1);
  45     if (!new_str)
  46         return NULL;
  47
  48     memcpy(new_str, str, len);
  49     new_str[len] = '\0';
  50     return new_str;
  51 }
  52
  53 void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn) {
  54     do_malloc = malloc_fn;
  55     do_free = free_fn;
  56 }
  57
  58 void json_get_alloc_funcs(json_malloc_t *malloc_fn, json_free_t *free_fn) {
  59     if (malloc_fn)
  60         *malloc_fn = do_malloc;
  61     if (free_fn)
  62         *free_fn = do_free;
  63 }