json_parser.h

Go to the documentation of this file.

/*
 *  Copyright (C) 2008-2015, Marvell International Ltd.
 *  All Rights Reserved.
 */
 
#ifndef __JSON_PARSER_H__
#define __JSON_PARSER_H__
 
#define MOD_JSON 7
 
#include <stdbool.h>
#include <stdint.h>
#include "jsmn.h"
 
#ifdef __cplusplus
namespace VirgilIoTKit {
extern "C" {
#endif
 
#define MOD_ERROR_START(x) (x << 12 | 0)
 
#ifdef JSMN_SHORT_TOKENS
typedef short jsmnindex_t;
typedef unsigned char jsmnenumtype_t;
#else
typedef int jsmnindex_t;
typedef jsmntype_t jsmnenumtype_t;
#endif
 
#define VS_JSON_ERR_OK 0
 
enum wm_json_errno {
    WM_E_JSON_ERRNO_BASE = MOD_ERROR_START(MOD_JSON),
    WM_E_JSON_FAIL,
    WM_E_JSON_NOMEM,
    WM_E_JSON_INVAL,
    WM_E_JSON_INCOMPLETE,
    WM_E_JSON_INVALID_JOBJ,
    WM_E_JSON_NOT_FOUND,
    WM_E_JSON_INVALID_TYPE,
    WM_E_JSON_INVALID_INDEX,
    WM_E_JSON_INVALID_JARRAY,
    WM_E_JSON_INVSTART,
    WM_E_JSON_OBUF,
};
 
typedef jsmntok_t jsontok_t;
/*
 * JSON parser Object.
 *
 * This is for internal use only.
 * This should not be used by application code
 */
typedef jsmn_parser json_parser_t;
typedef struct {
    json_parser_t parser;
    char *js;
    jsontok_t *tokens;
    jsontok_t *cur;
    int num_tokens;
} jobj_t;
 
int
json_init(jobj_t *jobj, jsontok_t *tokens, int num_tokens, char *js, size_t js_len);
 
int
json_parse_start(jobj_t *jobj, char *js, size_t js_len);
 
void
json_parse_stop(jobj_t *jobj);
 
bool
json_is_object(jobj_t *jobj);
 
bool
json_is_array(jobj_t *jobj);
int
json_get_val_bool(jobj_t *jobj, char *key, bool *value);
 
int
json_get_val_int(jobj_t *jobj, char *key, int *value);
 
int
json_get_val_int64(jobj_t *jobj, char *key, int64_t *value);
 
int
json_get_val_float(jobj_t *jobj, char *key, float *value);
 
int
json_get_val_str(jobj_t *jobj, char *key, char *value, int max_len);
 
int
json_get_val_str_len(jobj_t *jobj, char *key, int *len);
 
int
json_get_composite_object(jobj_t *jobj, char *key);
 
int
json_release_composite_object(jobj_t *jobj);
 
int
json_get_array_object(jobj_t *jobj, char *key, int *num_elements);
 
int
json_release_array_object(jobj_t *jobj);
 
int
json_array_get_num_elements(jobj_t *jobj);
 
int
json_array_get_bool(jobj_t *jobj, uint16_t index, bool *value);
 
int
json_array_get_int(jobj_t *jobj, uint16_t index, int *value);
 
int
json_array_get_int64(jobj_t *jobj, uint16_t index, int64_t *value);
 
int
json_array_get_float(jobj_t *jobj, uint16_t index, float *value);
 
int
json_array_get_str(jobj_t *jobj, uint16_t index, char *value, int maxlen);
 
int
json_array_get_str_len(jobj_t *jobj, uint16_t index, int *len);
 
int
json_array_get_composite_object(jobj_t *jobj, uint16_t index);
 
int
json_array_release_composite_object(jobj_t *jobj);
 
int
json_array_get_array_object(jobj_t *jobj, uint16_t index, int *num_elements);
 
int
json_array_release_array_object(jobj_t *jobj);
 
#ifdef __cplusplus
} // extern "C"
} // namespace VirgilIoTKit
#endif
 
#endif /* __JSON_PARSER_H__ */