Thanks to Basile Starynkevitch for the suggestion and initial patch. Thanks to Jonathan Landis and Deron Meranda for showing how this can be utilized for implementing secure memory operations.
245 lines
7.0 KiB
C
245 lines
7.0 KiB
C
/*
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* Copyright (c) 2009-2011 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 JANSSON_H
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#define JANSSON_H
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#include <stdio.h>
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#include <stdlib.h> /* for size_t */
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#include <stdarg.h>
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#include <jansson_config.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* version */
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#define JANSSON_MAJOR_VERSION 1
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#define JANSSON_MINOR_VERSION 3
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#define JANSSON_MICRO_VERSION 0
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/* Micro version is omitted if it's 0 */
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#define JANSSON_VERSION "1.3"
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/* Version as a 3-byte hex number, e.g. 0x010201 == 1.2.1. Use this
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for numeric comparisons, e.g. #if JANSSON_VERSION_HEX >= ... */
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#define JANSSON_VERSION_HEX ((JANSSON_MAJOR_VERSION << 16) | \
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(JANSSON_MINOR_VERSION << 8) | \
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(JANSSON_MICRO_VERSION << 0)))
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/* types */
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typedef enum {
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JSON_OBJECT,
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JSON_ARRAY,
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JSON_STRING,
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JSON_INTEGER,
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JSON_REAL,
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JSON_TRUE,
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JSON_FALSE,
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JSON_NULL
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} json_type;
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typedef struct {
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json_type type;
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size_t refcount;
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} json_t;
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#if JSON_INTEGER_IS_LONG_LONG
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#define JSON_INTEGER_FORMAT "lld"
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typedef long long json_int_t;
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#else
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#define JSON_INTEGER_FORMAT "ld"
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typedef long json_int_t;
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#endif /* JSON_INTEGER_IS_LONG_LONG */
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#define json_typeof(json) ((json)->type)
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#define json_is_object(json) (json && json_typeof(json) == JSON_OBJECT)
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#define json_is_array(json) (json && json_typeof(json) == JSON_ARRAY)
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#define json_is_string(json) (json && json_typeof(json) == JSON_STRING)
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#define json_is_integer(json) (json && json_typeof(json) == JSON_INTEGER)
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#define json_is_real(json) (json && json_typeof(json) == JSON_REAL)
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#define json_is_number(json) (json_is_integer(json) || json_is_real(json))
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#define json_is_true(json) (json && json_typeof(json) == JSON_TRUE)
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#define json_is_false(json) (json && json_typeof(json) == JSON_FALSE)
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#define json_is_boolean(json) (json_is_true(json) || json_is_false(json))
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#define json_is_null(json) (json && json_typeof(json) == JSON_NULL)
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/* construction, destruction, reference counting */
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json_t *json_object(void);
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json_t *json_array(void);
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json_t *json_string(const char *value);
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json_t *json_string_nocheck(const char *value);
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json_t *json_integer(json_int_t value);
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json_t *json_real(double value);
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json_t *json_true(void);
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json_t *json_false(void);
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json_t *json_null(void);
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static JSON_INLINE
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json_t *json_incref(json_t *json)
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{
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if(json && json->refcount != (size_t)-1)
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++json->refcount;
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return json;
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}
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/* do not call json_delete directly */
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void json_delete(json_t *json);
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static JSON_INLINE
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void json_decref(json_t *json)
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{
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if(json && json->refcount != (size_t)-1 && --json->refcount == 0)
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json_delete(json);
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}
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/* error reporting */
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#define JSON_ERROR_TEXT_LENGTH 160
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#define JSON_ERROR_SOURCE_LENGTH 80
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typedef struct {
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char text[JSON_ERROR_TEXT_LENGTH];
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int line;
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int column;
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char source[JSON_ERROR_SOURCE_LENGTH];
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} json_error_t;
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/* getters, setters, manipulation */
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size_t json_object_size(const json_t *object);
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json_t *json_object_get(const json_t *object, const char *key);
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int json_object_set_new(json_t *object, const char *key, json_t *value);
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int json_object_set_new_nocheck(json_t *object, const char *key, json_t *value);
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int json_object_del(json_t *object, const char *key);
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int json_object_clear(json_t *object);
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int json_object_update(json_t *object, json_t *other);
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void *json_object_iter(json_t *object);
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void *json_object_iter_at(json_t *object, const char *key);
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void *json_object_iter_next(json_t *object, void *iter);
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const char *json_object_iter_key(void *iter);
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json_t *json_object_iter_value(void *iter);
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int json_object_iter_set_new(json_t *object, void *iter, json_t *value);
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static JSON_INLINE
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int json_object_set(json_t *object, const char *key, json_t *value)
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{
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return json_object_set_new(object, key, json_incref(value));
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}
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static JSON_INLINE
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int json_object_set_nocheck(json_t *object, const char *key, json_t *value)
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{
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return json_object_set_new_nocheck(object, key, json_incref(value));
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}
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static JSON_INLINE
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int json_object_iter_set(json_t *object, void *iter, json_t *value)
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{
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return json_object_iter_set_new(object, iter, json_incref(value));
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}
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size_t json_array_size(const json_t *array);
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json_t *json_array_get(const json_t *array, size_t index);
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int json_array_set_new(json_t *array, size_t index, json_t *value);
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int json_array_append_new(json_t *array, json_t *value);
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int json_array_insert_new(json_t *array, size_t index, json_t *value);
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int json_array_remove(json_t *array, size_t index);
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int json_array_clear(json_t *array);
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int json_array_extend(json_t *array, json_t *other);
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static JSON_INLINE
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int json_array_set(json_t *array, size_t index, json_t *value)
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{
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return json_array_set_new(array, index, json_incref(value));
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}
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static JSON_INLINE
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int json_array_append(json_t *array, json_t *value)
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{
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return json_array_append_new(array, json_incref(value));
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}
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static JSON_INLINE
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int json_array_insert(json_t *array, size_t index, json_t *value)
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{
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return json_array_insert_new(array, index, json_incref(value));
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}
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const char *json_string_value(const json_t *string);
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json_int_t json_integer_value(const json_t *integer);
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double json_real_value(const json_t *real);
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double json_number_value(const json_t *json);
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int json_string_set(json_t *string, const char *value);
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int json_string_set_nocheck(json_t *string, const char *value);
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int json_integer_set(json_t *integer, json_int_t value);
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int json_real_set(json_t *real, double value);
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/* pack, unpack */
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json_t *json_pack(const char *fmt, ...);
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json_t *json_pack_ex(json_error_t *error, size_t flags, const char *fmt, ...);
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json_t *json_vpack_ex(json_error_t *error, size_t flags, const char *fmt, va_list ap);
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#define JSON_VALIDATE_ONLY 0x1
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#define JSON_STRICT 0x2
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int json_unpack(json_t *root, const char *fmt, ...);
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int json_unpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, ...);
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int json_vunpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, va_list ap);
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/* equality */
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int json_equal(json_t *value1, json_t *value2);
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/* copying */
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json_t *json_copy(json_t *value);
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json_t *json_deep_copy(json_t *value);
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/* loading, printing */
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json_t *json_loads(const char *input, size_t flags, json_error_t *error);
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json_t *json_loadf(FILE *input, size_t flags, json_error_t *error);
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json_t *json_load_file(const char *path, size_t flags, json_error_t *error);
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#define JSON_INDENT(n) (n & 0x1F)
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#define JSON_COMPACT 0x20
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#define JSON_ENSURE_ASCII 0x40
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#define JSON_SORT_KEYS 0x80
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#define JSON_PRESERVE_ORDER 0x100
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char *json_dumps(const json_t *json, size_t flags);
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int json_dumpf(const json_t *json, FILE *output, size_t flags);
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int json_dump_file(const json_t *json, const char *path, size_t flags);
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/* custom memory allocation */
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typedef void *(*json_malloc_t)(size_t);
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typedef void (*json_free_t)(void *);
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void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn);
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#ifdef __cplusplus
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}
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#endif
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#endif
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