QJson
QJson is a qt-based library that maps JSON data to QVariant objects. (by flavio)
JSMN
Jsmn is a world fastest JSON parser/tokenizer. This is the official repo replacing the old one at Bitbucket (by zserge)
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| QJson | JSMN | |
|---|---|---|
| - | 14 | |
| 282 | 3,553 | |
| - | - | |
| 2.8 | 0.0 | |
| 8 months ago | about 1 month ago | |
| C++ | C | |
| GNU Lesser General Public License v3.0 only | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
QJson
Posts with mentions or reviews of QJson.
We have used some of these posts to build our list of alternatives
and similar projects.
We haven't tracked posts mentioning QJson yet.
Tracking mentions began in Dec 2020.
JSMN
Posts with mentions or reviews of JSMN.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-11-05.
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Building a high performance JSON parser
Like how https://github.com/zserge/jsmn works. I thought it would be neat to have such as parser for https://github.com/vshymanskyy/muon
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Flattening ASTs (and Other Compiler Data Structures)
One more JSON implementation using this approach is https://github.com/zserge/jsmn.
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Show HN: WinGPT, AI Assistant for Windows 3.1
Yep! I'm using JSMN (https://github.com/zserge/jsmn), which is a streaming parser that visits each token sequentially, so there's only one copy of each JSON response in memory. I also avoid allocating new intermediate memory whenever possible; for example, to unescape backslashes in the JSON strings, I use a destructive loop that moves the non-backslash characters forward in memory, and truncates the string by moving the null terminator earlier in the string. Not something I'd imagine doing in most environments today, but as you said, it saves a bit of space at the expense of CPU time :)
void DestructivelyUnescapeStr(LPSTR lpInput) { - A good C library to parse json data
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Lightweight data serialization/deserialization format
After reviewing several options, I’ve settled on plain old JSON. For parsing, I use https://github.com/zserge/jsmn. For serialization I use https://github.com/rdpoor/jems (disclaimer: I wrote the latter, but others use it as well).
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jemi: a compact JSON serializer for embedded systems
As mentioned here, it appears that tiny-json is a parser, not a serializer. If you're looking for parsers, I've been very happy with jsmn.
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What is the proper way to store a RFC3339 date string?
Very small, 4-5 fields but I'm still going to write in binary because I'm trying to reduce dependencies and https://github.com/zserge/jsmn looks like good fit but jsmn only does parsing which I need for parsing some Oauth json data and config.json file. I will be able to dump the state struct in a state.bin file and read it later for comparing it with system time. Not having to write in text fits well for this particular use case. Benefits: Reduced dependencies and almost cost less decoding of the state struct(which the user will never see).
- Jsmn: A minimalistic JSON parser in C
- CJSON – Ultralightweight JSON parser in ANSI C
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A tiny zero-allocation JSON serializer compatible with C89!
This is my very straight-forward implementation that came to be from the lack of JSON encoding in jsmn:
What are some alternatives?
When comparing QJson and JSMN you can also consider the following projects:
RapidJSON - A fast JSON parser/generator for C++ with both SAX/DOM style API
cJSON - Ultralightweight JSON parser in ANSI C
json - JSON for Modern C++
json-c - https://github.com/json-c/json-c is the official code repository for json-c. See the wiki for release tarballs for download. API docs at http://json-c.github.io/json-c/
qt-json - A simple class for parsing JSON data into a QVariant hierarchy and vice versa.
Jansson - C library for encoding, decoding and manipulating JSON data
JsonCpp - A C++ library for interacting with JSON.
Boost.PropertyTree - Boost.org property_tree module
ArduinoJson - 📟 JSON library for Arduino and embedded C++. Simple and efficient.
json.h - 🗄️ single header json parser for C and C++