97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
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Copyright (c) 2010 Serge A. Zaitsev
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.*
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*/
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#ifndef __JSMN_H_
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#define __JSMN_H_
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* JSON type identifier. Basic types are:
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* o Object
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* o Array
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* o String
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* o Other primitive: number, boolean (true/false) or null
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*/
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typedef enum {
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JSMN_UNDEFINED = 0,
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JSMN_OBJECT = 1,
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JSMN_ARRAY = 2,
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JSMN_STRING = 3,
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JSMN_PRIMITIVE = 4
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} jsmntype_t;
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enum jsmnerr {
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/* Not enough tokens were provided */
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JSMN_ERROR_NOMEM = -1,
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/* Invalid character inside JSON string */
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JSMN_ERROR_INVAL = -2,
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/* The string is not a full JSON packet, more bytes expected */
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JSMN_ERROR_PART = -3
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};
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/**
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* JSON token description.
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* @param type type (object, array, string etc.)
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* @param start start position in JSON data string
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* @param end end position in JSON data string
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*/
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typedef struct {
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jsmntype_t type;
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int start;
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int end;
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int size;
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#ifdef JSMN_PARENT_LINKS
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int parent;
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#endif
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} jsmntok_t;
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/**
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* JSON parser. Contains an array of token blocks available. Also stores
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* the string being parsed now and current position in that string
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*/
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typedef struct {
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unsigned int pos; /* offset in the JSON string */
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unsigned int toknext; /* next token to allocate */
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int toksuper; /* superior token node, e.g parent object or array */
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} jsmn_parser;
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/**
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* Create JSON parser over an array of tokens
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*/
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void jsmn_init(jsmn_parser *parser);
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/**
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* Run JSON parser. It parses a JSON data string into and array of tokens, each describing
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* a single JSON object.
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*/
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int jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
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jsmntok_t *tokens, unsigned int num_tokens);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __JSMN_H_ */
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