cJSON | Ultralightweight JSON parser in ANSI C | Parser library

by DaveGamble C Version: v1.7.15 License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | cJSON Summary

cJSON is a C library typically used in Utilities, Parser, Nodejs applications. cJSON has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Ultralightweight JSON parser in ANSI C.

Support

Quality

Security

License

Reuse

Support

cJSON has a medium active ecosystem.

It has 8914 star(s) with 2947 fork(s). There are 274 watchers for this library.

It had no major release in the last 12 months.

There are 127 open issues and 357 have been closed. On average issues are closed in 101 days. There are 44 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of cJSON is v1.7.15

Quality

cJSON has 0 bugs and 0 code smells.

Security

cJSON has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

cJSON code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

cJSON is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

cJSON releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

It has 3309 lines of code, 140 functions and 18 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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cJSON Key Features

No Key Features are available at this moment for cJSON.

cJSON Examples and Code Snippets

No Code Snippets are available at this moment for cJSON.

Community Discussions

Trending Discussions on cJSON

Fibaro Home Center 2 requesting https prices and timestamps question

Dynamically fetching the Json key value in Lua

Iterating through a cJSON Array alternatively

How can I convert an int (which represents an decimal without its decimal places) to a double in c?

Send Json Payload to californium server

HTTPSConnectionPool error when trying to install gtest with conan

How to handle POST request with JSON payload on ESP32 server?

Parsing json array response / flutter

cJSON_Delete() and cJSON_free()

Why does the following JSON not deserialize properly?

QUESTION

Fibaro Home Center 2 requesting https prices and timestamps question

Asked 2022-Apr-08 at 23:43

I have a script which I wrote on Lua, that worked to get the prices and timestamps, but it won't work on fibaro HC2.

My Lua code:

...

ANSWER

Answered 2022-Apr-08 at 23:43

As Egor suggested, Fibaro sandboxes their Lua environment. A full list of what is removed is listed at https://manuals.fibaro.com/knowledge-base-browse/blocked-lua-commands/, but it includes require, dofile, load, loadfile, loadstring, several functions in the os library, and the entire io and package library.

That effectively requires all of your code to be contained in a single file, with no access to modules, packages, or libraries other than the remaining parts of the standard library, which means you simply can't do what you're trying to do here.

Source https://stackoverflow.com/questions/71792067

QUESTION

Dynamically fetching the Json key value in Lua

Asked 2022-Mar-11 at 10:00

I have an input Json for which I need to get the value for a specific key. Key name will be dynamic and will be passed in input like below -

Input Json -

...

ANSWER

Answered 2022-Mar-11 at 10:00

As suggested by @EgorSkriptunoff below code worked -

local value = assert(load("return "..path, nil, "t", json_body))()

Source https://stackoverflow.com/questions/68588588

QUESTION

Iterating through a cJSON Array alternatively

Asked 2022-Feb-22 at 06:41

This is the code I am using

...

ANSWER

Answered 2022-Feb-22 at 06:41

I found the answer to the above question

It appears that using cJSON_ArrayForEach we can't run the forloop at alternative indices. Instead I used something like this,

To check the index infront of current index

mangoe->next->valueint

To update the value of the next index

cJSON_SetIntValue(mangoe->next, 11);

Source https://stackoverflow.com/questions/71211587

QUESTION

How can I convert an int (which represents an decimal without its decimal places) to a double in c?

Asked 2022-Feb-11 at 15:19

I need to convert integers (which represents decimals but without using decimal places) to doubles in C. I know how many decimal places the integer should have because this information is also there. This new double is handed over to a JSON-API which appends this to a JSON structure afterwards.

Example: I need to produce a double value of 255.89 for an input of int1 := 25589 and int2 := 2

I've written this function:

...

ANSWER

Answered 2022-Feb-11 at 15:19

The addNumberToObject doesn't let you control how many significant digits you want to print.

You can get around this by using sprintf to format the number yourself and adding it as a string.

Source https://stackoverflow.com/questions/71082265

QUESTION

Send Json Payload to californium server

Asked 2021-Nov-06 at 15:22

I am using the development kit nrf9160 from Nordic Semiconductor. The server hostname in my code is "californium.eclipseprojects.io" and peer "5684".

I want to send a JSON payload using the PUT-method from CoAP. For this I am creating my JSON Payload with the following function:

...

ANSWER

Answered 2021-Nov-06 at 10:09

The result of

Source https://stackoverflow.com/questions/69854981

QUESTION

HTTPSConnectionPool error when trying to install gtest with conan

Asked 2021-Oct-26 at 12:09

I'm trying to use conan to install gtest but when I do so I have the following error:

...

ANSWER

Answered 2021-Oct-26 at 12:09

This error is related to deprecated certificate.

It was discussed here: https://github.com/conan-io/conan/issues/9695

To summarize, you have 2 options:

Update your Conan client to >= 1.41.0 (Best solution):

pip install -U conan
Install a new certificate (Workaround):

conan config install https://github.com/conan-io/conanclientcert.git

Source https://stackoverflow.com/questions/69719363

QUESTION

How to handle POST request with JSON payload on ESP32 server?

Asked 2021-Sep-20 at 12:56

I am trying to receive json data from http server on ESP32, but I get core panic every time I try to access data inside my json. POST request is done using simple html form:

...

ANSWER

Answered 2021-Sep-20 at 12:56

Your

has attribute enctype='text/plain'; that means that the POST body will not contain data encoded in JSON.

Indeed, string "type=Lager primary-duration=5" is not valid JSON.

Unfortunately, enctype='application/json' is not available, so you have to serialize the form's fields manually, and then make a POST request with JSON data.

For instance:

Source https://stackoverflow.com/questions/69254339

QUESTION

Parsing json array response / flutter

Asked 2021-Sep-18 at 23:55

Did this according to this manual https://www.bezkoder.com/dart-flutter-parse-json-string-array-to-object-list/ Dart/Flutter parse array of JSON objects into List

JSON that comes from the server

{"myChannels":[{"id":"2","name":"channel2test","imageUrl":"image1.png"},{"id":"2","name":"channel2test","imageUrl":"image2.png"}]}

Model Class

...

ANSWER

Answered 2021-Sep-18 at 21:38

part 'example.g.dart';

@JsonSerializable()
class Channel{
  final String id;
  final String name;
  final String? imageUrl;
  Channel({required this.id, required this.name, this.imageUrl});
  factory Channel.fromJson(Map json) => _$ChannelFromJson(json);
  Map toJson() => _$ChannelToJson(this);
}



@JsonSerializable()
class ChannelList{
  final List myChannels;
  ChannelList({required this.myChannels});
  factory ChannelList.fromJson(Map json) => _$ChannelListFromJson(json);
  Map toJson() => _$ChannelListToJson(this);
}

Source https://stackoverflow.com/questions/69238564

QUESTION

cJSON_Delete() and cJSON_free()

Asked 2021-Aug-25 at 11:45

am still new to the cJSON library and i cant fully understand the uses of cJSON_Delete() and cJSON_free(),

Is there any document that accurately describes what functions should be released, also when to use cJSON_free() and when to use cJSON_Delete().
What is cJSON_InitHooks() purpose and how to use it in my code.
Everytime i declare a variable cJSON *Variable; do i need to free it to minimize memory usage or it will free itself??

Thanks!!

...

ANSWER

Answered 2021-Aug-25 at 11:45

A quick glance in the Readme and the header file shows:

From the letter: No, the project seems not to provide such documents.
- Anyway, you don't need to call cJSON_free() if you don't call cJSON_malloc(). It's more a helper function to let you call the free() and malloc() hooked functions.
- You need to call cJSON_Delete() for any cJSON object you receive from any of the allocating functions, like the parsers.
The purpose of cJSON_InitHooks() is to provide your own memory allocation functions to the library. This might be interesting if you don't want to use the default functions or if you use a target without (working) malloc() and free().
The declaration as such does not allocate memory for a cJSON object. If you don't obtain such an object, you cannot call cJSON_Delete() successfully. By calling cJSON_Delete(), the memory allocated by one of the parsers for example, will be freed.

It seems as if you need to learn about pointers and dynamic memory allocation to use this library correctly. This is fairly basic C stuff independent of this library.

However, reading the provided introduction (especially the examples) and if in doubt the source will help, too.

Source https://stackoverflow.com/questions/68921154

QUESTION

Why does the following JSON not deserialize properly?

Asked 2021-Aug-02 at 07:47

I have encountered a rather weird issue while trying to deserialize a simple json into an object of type D3Point, which is used from a NuGet package.

The json looks like this:

...

ANSWER

Answered 2021-Jul-30 at 10:54

You could just interim via a Dictionary

Source https://stackoverflow.com/questions/68588830

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install cJSON

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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