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json_parser_c

One .h file for json parsing for C The main goal is to extract target data from json in C There is no validating, serializing and deserializing

It's very easy to use it

const char* json_string = "{\"Error\":{\"Code\":\"AccessDenied\",\"Message\": \"Access Denied\"}}";
const char* result = json_parse("/Error/Code", json_string, 0);
printf("%s\n", result);

Output:

AccessDenied

Function and parameters:

Signature

const char* json_parse(const char* xpath, const char* data, json_parser_stat_t* stat)

Params

  1. xpath - Xpath to the target value (for example /path/to/data/3/message) every part of that path is the property name or item index in array.

  2. data - Input json string

  3. stat - A structure that provides information about the result type, offset, length, and other parameters. Can be null.

Result

0 - if it can't find the desired value using such xpath pointer to the string - In success.

Note This is a newly allocated string (you have to free it yourself), quotes are excluded if it is a string type.

stat - parameter will be updated by fresh data. Using start.result_offset and start.result_length, you can "see" where the desired value is in the input string, quotes are included if it is a string type.

License

MIT