Parsing JSON using C

Question

I m trying to find a good way to parse JSON in C   I really don t need a huge library or anything  I would rather have something small and lightweight with a bare minimum of features  but good documentation    Does anyone have anything they can point me to

User · Answer

Jsmn is quite minimalistic and has only two functions to work with  https   github com zserge jsmn

User · Answer

You can have a look at Jansson  The website states the following  Jansson is a C library for encoding  decoding and manipulating JSON data  It features    Simple and intuitive API and data model Can both encode to and decode from JSON Comprehensive documentation No dependencies on other libraries Full Unicode support  UTF-8  Extensive test suite

User · Answer

cJSON has a decent API and is small  2 files   700 lines   Many of the other JSON parsers I looked at first were huge    I just want to parse some JSON   Edit  We ve made some improvements to cJSON over the years

User · Answer

NXJSON is full-featured yet very small   400 lines of code  JSON parser  which has easy to use API  const nx json  json nx json parse utf8 code   printf  quot hello  s n quot   nx json get json   quot hello quot  - gt text value   const nx json  arr nx json get json   quot my-array quot    int i  for  i 0  i lt arr- gt length  i        const nx json  item nx json item arr  i     printf  quot arr  d    d   ld n quot   i   int item- gt type  item- gt int value     nx json free json

User · Answer

Json isn t a huge language to start with  so libraries for it are likely to be small er than Xml libraries  at least   There are a whole ton of C libraries linked at Json org   Maybe one of them will work well for you

User · Answer

I used JSON-C for a work project and would recommend it  Lightweight and is released with open licensing    Documentation is included in the distribution  You basically have   add functions to create JSON objects  equivalent   put functions to release their memory  and utility functions that convert types and output objects in string representation   The licensing allows inclusion with your project  We used it in this way  compiling JSON-C as a static library that is linked in with the main build  That way  we don t have to worry about dependencies  other than installing Xcode    JSON-C also built for us under OS X  x86 Intel  and Linux  x86 Intel  without incident  If your project needs to be portable  this is a good start

User · Answer

Do you need to parse arbitrary JSON structures  or just data that s specific to your application  If the latter  you can make it a lot lighter and more efficient by not having to generate any hash table map structure mapping JSON keys to values  you can instead just store the data directly into struct fields or whatever

[c] Parsing JSON using C

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