69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
#ifndef __JSMN_H_
|
|
#define __JSMN_H_
|
|
|
|
/*
|
|
* JSON type identifier. Basic types are:
|
|
* o Object
|
|
* o Array
|
|
* o String
|
|
* o Other primitive: number, boolean (true/false) or null
|
|
*/
|
|
typedef enum {
|
|
JSMN_PRIMITIVE = 0,
|
|
JSMN_OBJECT = 1,
|
|
JSMN_ARRAY = 2,
|
|
JSMN_STRING = 3
|
|
} jsmntype_t;
|
|
|
|
typedef enum {
|
|
/* Not enough tokens were provided */
|
|
JSMN_ERROR_NOMEM = -1,
|
|
/* Invalid character inside JSON string */
|
|
JSMN_ERROR_INVAL = -2,
|
|
/* The string is not a full JSON packet, more bytes expected */
|
|
JSMN_ERROR_PART = -3,
|
|
/* Everything was fine */
|
|
JSMN_SUCCESS = 0
|
|
} jsmnerr_t;
|
|
|
|
/*
|
|
* JSON token description.
|
|
* @param type type (object, array, string etc.)
|
|
* @param start start position in JSON data string
|
|
* @param end end position in JSON data string
|
|
*/
|
|
typedef struct {
|
|
jsmntype_t type;
|
|
int start;
|
|
int end;
|
|
int size;
|
|
} jsmntok_t;
|
|
|
|
/*
|
|
* JSON parser. Contains an array of token blocks available. Also stores
|
|
* the string being parsed now and current position in that string
|
|
*/
|
|
typedef struct {
|
|
unsigned int pos; /* offset in the JSON string */
|
|
int toknext; /* next token to allocate */
|
|
int toksuper; /* superior token node, e.g parent object or array */
|
|
} jsmn_parser;
|
|
|
|
/*
|
|
* Create JSON parser over an array of tokens
|
|
*/
|
|
void jsmn_init(jsmn_parser *parser);
|
|
|
|
/*
|
|
* Run JSON parser. It parses a JSON data string into and array of tokens,
|
|
* each describing a single JSON object.
|
|
*/
|
|
jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js,
|
|
size_t len,
|
|
jsmntok_t *tokens, unsigned int num_tokens);
|
|
|
|
const char *jsmn_strerror(jsmnerr_t err);
|
|
|
|
#endif /* __JSMN_H_ */
|