1046 lines
21 KiB
C
1046 lines
21 KiB
C
/*
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* Copyright (c) 2009-2016 Petri Lehtinen <petri@digip.org>
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*
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* Jansson is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#ifdef HAVE_CONFIG_H
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#include <jansson_private_config.h>
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#endif
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#include "jansson.h"
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#include "hashtable.h"
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#include "jansson_private.h"
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#include "utf.h"
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/* Work around nonstandard isnan() and isinf() implementations */
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#ifndef isnan
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#ifndef __sun
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static JSON_INLINE int isnan(double x) { return x != x; }
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#endif
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#endif
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#ifndef isinf
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static JSON_INLINE int isinf(double x) { return !isnan(x) && isnan(x - x); }
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#endif
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static JSON_INLINE void json_init(json_t *json, json_type type)
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{
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json->type = type;
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json->refcount = 1;
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}
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/*** object ***/
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extern volatile uint32_t hashtable_seed;
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json_t *json_object(void)
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{
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json_object_t *object = jsonp_malloc(sizeof(json_object_t));
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if(!object)
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return NULL;
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if (!hashtable_seed) {
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/* Autoseed */
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json_object_seed(0);
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}
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json_init(&object->json, JSON_OBJECT);
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if(hashtable_init(&object->hashtable))
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{
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jsonp_free(object);
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return NULL;
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}
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object->visited = 0;
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return &object->json;
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}
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static void json_delete_object(json_object_t *object)
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{
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hashtable_close(&object->hashtable);
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jsonp_free(object);
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}
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size_t json_object_size(const json_t *json)
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{
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json_object_t *object;
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if(!json_is_object(json))
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return 0;
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object = json_to_object(json);
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return object->hashtable.size;
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}
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json_t *json_object_get(const json_t *json, const char *key)
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{
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json_object_t *object;
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if(!key || !json_is_object(json))
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return NULL;
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object = json_to_object(json);
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return hashtable_get(&object->hashtable, key);
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}
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int json_object_set_new_nocheck(json_t *json, const char *key, json_t *value)
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{
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json_object_t *object;
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if(!value)
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return -1;
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if(!key || !json_is_object(json) || json == value)
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{
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json_decref(value);
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return -1;
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}
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object = json_to_object(json);
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if(hashtable_set(&object->hashtable, key, value))
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{
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json_decref(value);
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return -1;
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}
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return 0;
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}
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int json_object_set_new(json_t *json, const char *key, json_t *value)
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{
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if(!key || !utf8_check_string(key, strlen(key)))
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{
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json_decref(value);
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return -1;
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}
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return json_object_set_new_nocheck(json, key, value);
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}
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int json_object_del(json_t *json, const char *key)
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{
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json_object_t *object;
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if(!key || !json_is_object(json))
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return -1;
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object = json_to_object(json);
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return hashtable_del(&object->hashtable, key);
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}
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int json_object_clear(json_t *json)
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{
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json_object_t *object;
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if(!json_is_object(json))
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return -1;
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object = json_to_object(json);
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hashtable_clear(&object->hashtable);
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return 0;
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}
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int json_object_update(json_t *object, json_t *other)
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{
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const char *key;
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json_t *value;
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if(!json_is_object(object) || !json_is_object(other))
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return -1;
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json_object_foreach(other, key, value) {
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if(json_object_set_nocheck(object, key, value))
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return -1;
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}
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return 0;
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}
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int json_object_update_existing(json_t *object, json_t *other)
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{
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const char *key;
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json_t *value;
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if(!json_is_object(object) || !json_is_object(other))
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return -1;
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json_object_foreach(other, key, value) {
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if(json_object_get(object, key))
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json_object_set_nocheck(object, key, value);
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}
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return 0;
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}
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int json_object_update_missing(json_t *object, json_t *other)
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{
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const char *key;
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json_t *value;
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if(!json_is_object(object) || !json_is_object(other))
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return -1;
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json_object_foreach(other, key, value) {
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if(!json_object_get(object, key))
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json_object_set_nocheck(object, key, value);
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}
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return 0;
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}
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void *json_object_iter(json_t *json)
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{
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json_object_t *object;
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if(!json_is_object(json))
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return NULL;
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object = json_to_object(json);
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return hashtable_iter(&object->hashtable);
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}
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void *json_object_iter_at(json_t *json, const char *key)
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{
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json_object_t *object;
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if(!key || !json_is_object(json))
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return NULL;
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object = json_to_object(json);
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return hashtable_iter_at(&object->hashtable, key);
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}
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void *json_object_iter_next(json_t *json, void *iter)
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{
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json_object_t *object;
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if(!json_is_object(json) || iter == NULL)
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return NULL;
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object = json_to_object(json);
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return hashtable_iter_next(&object->hashtable, iter);
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}
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const char *json_object_iter_key(void *iter)
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{
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if(!iter)
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return NULL;
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return hashtable_iter_key(iter);
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}
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json_t *json_object_iter_value(void *iter)
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{
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if(!iter)
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return NULL;
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return (json_t *)hashtable_iter_value(iter);
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}
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int json_object_iter_set_new(json_t *json, void *iter, json_t *value)
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{
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if(!json_is_object(json) || !iter || !value)
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return -1;
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hashtable_iter_set(iter, value);
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return 0;
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}
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void *json_object_key_to_iter(const char *key)
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{
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if(!key)
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return NULL;
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return hashtable_key_to_iter(key);
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}
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static int json_object_equal(json_t *object1, json_t *object2)
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{
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const char *key;
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json_t *value1, *value2;
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if(json_object_size(object1) != json_object_size(object2))
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return 0;
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json_object_foreach(object1, key, value1) {
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value2 = json_object_get(object2, key);
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if(!json_equal(value1, value2))
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return 0;
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}
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return 1;
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}
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static json_t *json_object_copy(json_t *object)
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{
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json_t *result;
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const char *key;
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json_t *value;
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result = json_object();
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if(!result)
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return NULL;
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json_object_foreach(object, key, value)
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json_object_set_nocheck(result, key, value);
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return result;
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}
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static json_t *json_object_deep_copy(const json_t *object)
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{
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json_t *result;
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void *iter;
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result = json_object();
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if(!result)
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return NULL;
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/* Cannot use json_object_foreach because object has to be cast
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non-const */
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iter = json_object_iter((json_t *)object);
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while(iter) {
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const char *key;
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const json_t *value;
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key = json_object_iter_key(iter);
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value = json_object_iter_value(iter);
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json_object_set_new_nocheck(result, key, json_deep_copy(value));
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iter = json_object_iter_next((json_t *)object, iter);
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}
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return result;
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}
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/*** array ***/
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json_t *json_array(void)
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{
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json_array_t *array = jsonp_malloc(sizeof(json_array_t));
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if(!array)
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return NULL;
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json_init(&array->json, JSON_ARRAY);
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array->entries = 0;
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array->size = 8;
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array->table = jsonp_malloc(array->size * sizeof(json_t *));
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if(!array->table) {
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jsonp_free(array);
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return NULL;
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}
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array->visited = 0;
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return &array->json;
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}
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static void json_delete_array(json_array_t *array)
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{
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size_t i;
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for(i = 0; i < array->entries; i++)
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json_decref(array->table[i]);
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jsonp_free(array->table);
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jsonp_free(array);
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}
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size_t json_array_size(const json_t *json)
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{
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if(!json_is_array(json))
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return 0;
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return json_to_array(json)->entries;
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}
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json_t *json_array_get(const json_t *json, size_t index)
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{
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json_array_t *array;
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if(!json_is_array(json))
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return NULL;
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array = json_to_array(json);
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if(index >= array->entries)
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return NULL;
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return array->table[index];
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}
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int json_array_set_new(json_t *json, size_t index, json_t *value)
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{
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json_array_t *array;
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if(!value)
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return -1;
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if(!json_is_array(json) || json == value)
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{
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json_decref(value);
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return -1;
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}
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array = json_to_array(json);
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if(index >= array->entries)
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{
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json_decref(value);
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return -1;
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}
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json_decref(array->table[index]);
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array->table[index] = value;
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return 0;
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}
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static void array_move(json_array_t *array, size_t dest,
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size_t src, size_t count)
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{
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memmove(&array->table[dest], &array->table[src], count * sizeof(json_t *));
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}
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static void array_copy(json_t **dest, size_t dpos,
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json_t **src, size_t spos,
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size_t count)
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{
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memcpy(&dest[dpos], &src[spos], count * sizeof(json_t *));
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}
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static json_t **json_array_grow(json_array_t *array,
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size_t amount,
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int copy)
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{
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size_t new_size;
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json_t **old_table, **new_table;
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if(array->entries + amount <= array->size)
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return array->table;
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old_table = array->table;
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new_size = max(array->size + amount, array->size * 2);
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new_table = jsonp_malloc(new_size * sizeof(json_t *));
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if(!new_table)
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return NULL;
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array->size = new_size;
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array->table = new_table;
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if(copy) {
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array_copy(array->table, 0, old_table, 0, array->entries);
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jsonp_free(old_table);
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return array->table;
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}
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return old_table;
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}
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int json_array_append_new(json_t *json, json_t *value)
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{
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json_array_t *array;
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if(!value)
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return -1;
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if(!json_is_array(json) || json == value)
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{
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json_decref(value);
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return -1;
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}
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array = json_to_array(json);
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if(!json_array_grow(array, 1, 1)) {
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json_decref(value);
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return -1;
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}
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array->table[array->entries] = value;
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array->entries++;
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return 0;
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}
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int json_array_insert_new(json_t *json, size_t index, json_t *value)
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{
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json_array_t *array;
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json_t **old_table;
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if(!value)
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return -1;
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if(!json_is_array(json) || json == value) {
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json_decref(value);
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return -1;
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}
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array = json_to_array(json);
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if(index > array->entries) {
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json_decref(value);
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return -1;
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}
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old_table = json_array_grow(array, 1, 0);
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if(!old_table) {
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json_decref(value);
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return -1;
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}
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if(old_table != array->table) {
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array_copy(array->table, 0, old_table, 0, index);
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array_copy(array->table, index + 1, old_table, index,
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array->entries - index);
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jsonp_free(old_table);
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}
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else
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array_move(array, index + 1, index, array->entries - index);
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array->table[index] = value;
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array->entries++;
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return 0;
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}
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int json_array_remove(json_t *json, size_t index)
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{
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json_array_t *array;
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if(!json_is_array(json))
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return -1;
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array = json_to_array(json);
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if(index >= array->entries)
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return -1;
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json_decref(array->table[index]);
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/* If we're removing the last element, nothing has to be moved */
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if(index < array->entries - 1)
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array_move(array, index, index + 1, array->entries - index - 1);
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array->entries--;
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return 0;
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}
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int json_array_clear(json_t *json)
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{
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json_array_t *array;
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size_t i;
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if(!json_is_array(json))
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return -1;
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array = json_to_array(json);
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for(i = 0; i < array->entries; i++)
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json_decref(array->table[i]);
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array->entries = 0;
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return 0;
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}
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int json_array_extend(json_t *json, json_t *other_json)
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{
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json_array_t *array, *other;
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size_t i;
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if(!json_is_array(json) || !json_is_array(other_json))
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return -1;
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array = json_to_array(json);
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other = json_to_array(other_json);
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if(!json_array_grow(array, other->entries, 1))
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return -1;
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for(i = 0; i < other->entries; i++)
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json_incref(other->table[i]);
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array_copy(array->table, array->entries, other->table, 0, other->entries);
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array->entries += other->entries;
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return 0;
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}
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static int json_array_equal(json_t *array1, json_t *array2)
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{
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size_t i, size;
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size = json_array_size(array1);
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if(size != json_array_size(array2))
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return 0;
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for(i = 0; i < size; i++)
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{
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json_t *value1, *value2;
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value1 = json_array_get(array1, i);
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value2 = json_array_get(array2, i);
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if(!json_equal(value1, value2))
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return 0;
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}
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return 1;
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}
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static json_t *json_array_copy(json_t *array)
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{
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json_t *result;
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size_t i;
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|
|
result = json_array();
|
|
if(!result)
|
|
return NULL;
|
|
|
|
for(i = 0; i < json_array_size(array); i++)
|
|
json_array_append(result, json_array_get(array, i));
|
|
|
|
return result;
|
|
}
|
|
|
|
static json_t *json_array_deep_copy(const json_t *array)
|
|
{
|
|
json_t *result;
|
|
size_t i;
|
|
|
|
result = json_array();
|
|
if(!result)
|
|
return NULL;
|
|
|
|
for(i = 0; i < json_array_size(array); i++)
|
|
json_array_append_new(result, json_deep_copy(json_array_get(array, i)));
|
|
|
|
return result;
|
|
}
|
|
|
|
/*** string ***/
|
|
|
|
static json_t *string_create(const char *value, size_t len, int own)
|
|
{
|
|
char *v;
|
|
json_string_t *string;
|
|
|
|
if(!value)
|
|
return NULL;
|
|
|
|
if(own)
|
|
v = (char *)value;
|
|
else {
|
|
v = jsonp_strndup(value, len);
|
|
if(!v)
|
|
return NULL;
|
|
}
|
|
|
|
string = jsonp_malloc(sizeof(json_string_t));
|
|
if(!string) {
|
|
if(!own)
|
|
jsonp_free(v);
|
|
return NULL;
|
|
}
|
|
json_init(&string->json, JSON_STRING);
|
|
string->value = v;
|
|
string->length = len;
|
|
|
|
return &string->json;
|
|
}
|
|
|
|
json_t *json_string_nocheck(const char *value)
|
|
{
|
|
if(!value)
|
|
return NULL;
|
|
|
|
return string_create(value, strlen(value), 0);
|
|
}
|
|
|
|
json_t *json_stringn_nocheck(const char *value, size_t len)
|
|
{
|
|
return string_create(value, len, 0);
|
|
}
|
|
|
|
/* this is private; "steal" is not a public API concept */
|
|
json_t *jsonp_stringn_nocheck_own(const char *value, size_t len)
|
|
{
|
|
return string_create(value, len, 1);
|
|
}
|
|
|
|
json_t *json_string(const char *value)
|
|
{
|
|
if(!value)
|
|
return NULL;
|
|
|
|
return json_stringn(value, strlen(value));
|
|
}
|
|
|
|
json_t *json_stringn(const char *value, size_t len)
|
|
{
|
|
if(!value || !utf8_check_string(value, len))
|
|
return NULL;
|
|
|
|
return json_stringn_nocheck(value, len);
|
|
}
|
|
|
|
const char *json_string_value(const json_t *json)
|
|
{
|
|
if(!json_is_string(json))
|
|
return NULL;
|
|
|
|
return json_to_string(json)->value;
|
|
}
|
|
|
|
size_t json_string_length(const json_t *json)
|
|
{
|
|
if(!json_is_string(json))
|
|
return 0;
|
|
|
|
return json_to_string(json)->length;
|
|
}
|
|
|
|
int json_string_set_nocheck(json_t *json, const char *value)
|
|
{
|
|
if(!value)
|
|
return -1;
|
|
|
|
return json_string_setn_nocheck(json, value, strlen(value));
|
|
}
|
|
|
|
int json_string_setn_nocheck(json_t *json, const char *value, size_t len)
|
|
{
|
|
char *dup;
|
|
json_string_t *string;
|
|
|
|
if(!json_is_string(json) || !value)
|
|
return -1;
|
|
|
|
dup = jsonp_strndup(value, len);
|
|
if(!dup)
|
|
return -1;
|
|
|
|
string = json_to_string(json);
|
|
jsonp_free(string->value);
|
|
string->value = dup;
|
|
string->length = len;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int json_string_set(json_t *json, const char *value)
|
|
{
|
|
if(!value)
|
|
return -1;
|
|
|
|
return json_string_setn(json, value, strlen(value));
|
|
}
|
|
|
|
int json_string_setn(json_t *json, const char *value, size_t len)
|
|
{
|
|
if(!value || !utf8_check_string(value, len))
|
|
return -1;
|
|
|
|
return json_string_setn_nocheck(json, value, len);
|
|
}
|
|
|
|
static void json_delete_string(json_string_t *string)
|
|
{
|
|
jsonp_free(string->value);
|
|
jsonp_free(string);
|
|
}
|
|
|
|
static int json_string_equal(json_t *string1, json_t *string2)
|
|
{
|
|
json_string_t *s1, *s2;
|
|
|
|
if(!json_is_string(string1) || !json_is_string(string2))
|
|
return 0;
|
|
|
|
s1 = json_to_string(string1);
|
|
s2 = json_to_string(string2);
|
|
return s1->length == s2->length && !memcmp(s1->value, s2->value, s1->length);
|
|
}
|
|
|
|
static json_t *json_string_copy(const json_t *string)
|
|
{
|
|
json_string_t *s;
|
|
|
|
if(!json_is_string(string))
|
|
return NULL;
|
|
|
|
s = json_to_string(string);
|
|
return json_stringn_nocheck(s->value, s->length);
|
|
}
|
|
|
|
|
|
/*** integer ***/
|
|
|
|
json_t *json_integer(json_int_t value)
|
|
{
|
|
json_integer_t *integer = jsonp_malloc(sizeof(json_integer_t));
|
|
if(!integer)
|
|
return NULL;
|
|
json_init(&integer->json, JSON_INTEGER);
|
|
|
|
integer->value = value;
|
|
return &integer->json;
|
|
}
|
|
|
|
json_int_t json_integer_value(const json_t *json)
|
|
{
|
|
if(!json_is_integer(json))
|
|
return 0;
|
|
|
|
return json_to_integer(json)->value;
|
|
}
|
|
|
|
int json_integer_set(json_t *json, json_int_t value)
|
|
{
|
|
if(!json_is_integer(json))
|
|
return -1;
|
|
|
|
json_to_integer(json)->value = value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void json_delete_integer(json_integer_t *integer)
|
|
{
|
|
jsonp_free(integer);
|
|
}
|
|
|
|
static int json_integer_equal(json_t *integer1, json_t *integer2)
|
|
{
|
|
return json_integer_value(integer1) == json_integer_value(integer2);
|
|
}
|
|
|
|
static json_t *json_integer_copy(const json_t *integer)
|
|
{
|
|
return json_integer(json_integer_value(integer));
|
|
}
|
|
|
|
|
|
/*** real ***/
|
|
|
|
json_t *json_real(double value)
|
|
{
|
|
json_real_t *real;
|
|
|
|
if(isnan(value) || isinf(value))
|
|
return NULL;
|
|
|
|
real = jsonp_malloc(sizeof(json_real_t));
|
|
if(!real)
|
|
return NULL;
|
|
json_init(&real->json, JSON_REAL);
|
|
|
|
real->value = value;
|
|
return &real->json;
|
|
}
|
|
|
|
double json_real_value(const json_t *json)
|
|
{
|
|
if(!json_is_real(json))
|
|
return 0;
|
|
|
|
return json_to_real(json)->value;
|
|
}
|
|
|
|
int json_real_set(json_t *json, double value)
|
|
{
|
|
if(!json_is_real(json) || isnan(value) || isinf(value))
|
|
return -1;
|
|
|
|
json_to_real(json)->value = value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void json_delete_real(json_real_t *real)
|
|
{
|
|
jsonp_free(real);
|
|
}
|
|
|
|
static int json_real_equal(json_t *real1, json_t *real2)
|
|
{
|
|
return json_real_value(real1) == json_real_value(real2);
|
|
}
|
|
|
|
static json_t *json_real_copy(const json_t *real)
|
|
{
|
|
return json_real(json_real_value(real));
|
|
}
|
|
|
|
|
|
/*** number ***/
|
|
|
|
double json_number_value(const json_t *json)
|
|
{
|
|
if(json_is_integer(json))
|
|
return (double)json_integer_value(json);
|
|
else if(json_is_real(json))
|
|
return json_real_value(json);
|
|
else
|
|
return 0.0;
|
|
}
|
|
|
|
|
|
/*** simple values ***/
|
|
|
|
json_t *json_true(void)
|
|
{
|
|
static json_t the_true = {JSON_TRUE, (size_t)-1};
|
|
return &the_true;
|
|
}
|
|
|
|
|
|
json_t *json_false(void)
|
|
{
|
|
static json_t the_false = {JSON_FALSE, (size_t)-1};
|
|
return &the_false;
|
|
}
|
|
|
|
|
|
json_t *json_null(void)
|
|
{
|
|
static json_t the_null = {JSON_NULL, (size_t)-1};
|
|
return &the_null;
|
|
}
|
|
|
|
|
|
/*** deletion ***/
|
|
|
|
void json_delete(json_t *json)
|
|
{
|
|
if (!json)
|
|
return;
|
|
|
|
switch(json_typeof(json)) {
|
|
case JSON_OBJECT:
|
|
json_delete_object(json_to_object(json));
|
|
break;
|
|
case JSON_ARRAY:
|
|
json_delete_array(json_to_array(json));
|
|
break;
|
|
case JSON_STRING:
|
|
json_delete_string(json_to_string(json));
|
|
break;
|
|
case JSON_INTEGER:
|
|
json_delete_integer(json_to_integer(json));
|
|
break;
|
|
case JSON_REAL:
|
|
json_delete_real(json_to_real(json));
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* json_delete is not called for true, false or null */
|
|
}
|
|
|
|
|
|
/*** equality ***/
|
|
|
|
int json_equal(json_t *json1, json_t *json2)
|
|
{
|
|
if(!json1 || !json2)
|
|
return 0;
|
|
|
|
if(json_typeof(json1) != json_typeof(json2))
|
|
return 0;
|
|
|
|
/* this covers true, false and null as they are singletons */
|
|
if(json1 == json2)
|
|
return 1;
|
|
|
|
switch(json_typeof(json1)) {
|
|
case JSON_OBJECT:
|
|
return json_object_equal(json1, json2);
|
|
case JSON_ARRAY:
|
|
return json_array_equal(json1, json2);
|
|
case JSON_STRING:
|
|
return json_string_equal(json1, json2);
|
|
case JSON_INTEGER:
|
|
return json_integer_equal(json1, json2);
|
|
case JSON_REAL:
|
|
return json_real_equal(json1, json2);
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
/*** copying ***/
|
|
|
|
json_t *json_copy(json_t *json)
|
|
{
|
|
if(!json)
|
|
return NULL;
|
|
|
|
switch(json_typeof(json)) {
|
|
case JSON_OBJECT:
|
|
return json_object_copy(json);
|
|
case JSON_ARRAY:
|
|
return json_array_copy(json);
|
|
case JSON_STRING:
|
|
return json_string_copy(json);
|
|
case JSON_INTEGER:
|
|
return json_integer_copy(json);
|
|
case JSON_REAL:
|
|
return json_real_copy(json);
|
|
case JSON_TRUE:
|
|
case JSON_FALSE:
|
|
case JSON_NULL:
|
|
return json;
|
|
default:
|
|
return NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
json_t *json_deep_copy(const json_t *json)
|
|
{
|
|
if(!json)
|
|
return NULL;
|
|
|
|
switch(json_typeof(json)) {
|
|
case JSON_OBJECT:
|
|
return json_object_deep_copy(json);
|
|
case JSON_ARRAY:
|
|
return json_array_deep_copy(json);
|
|
/* for the rest of the types, deep copying doesn't differ from
|
|
shallow copying */
|
|
case JSON_STRING:
|
|
return json_string_copy(json);
|
|
case JSON_INTEGER:
|
|
return json_integer_copy(json);
|
|
case JSON_REAL:
|
|
return json_real_copy(json);
|
|
case JSON_TRUE:
|
|
case JSON_FALSE:
|
|
case JSON_NULL:
|
|
return (json_t *)json;
|
|
default:
|
|
return NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|