pulldown-cmark
JSMN
pulldown-cmark | JSMN | |
---|---|---|
8 | 14 | |
1,930 | 3,559 | |
1.6% | - | |
9.0 | 0.0 | |
10 days ago | about 2 months ago | |
Rust | C | |
MIT License | MIT License |
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.
pulldown-cmark
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CryptoFlow: Building a secure and scalable system with Axum and SvelteKit - Part 3
As a platform that allows expressiveness, we want our users to be bold enough to ask and answer questions with either plain text or some markdowns. Compiling markdown to HTML in Rust can be done via the pulldown-cmark crate. We used it in this utility function:
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Building a high performance JSON parser
I also really like this paradigm. It’s just that in old crusty null-terminated C style this is really awkward because the input data must be copied or modified. But it’s not an issue when using slices (length and pointer). Unfortunately most of the C standard library and many operating system APIs expect that.
I’ve seen this referred to as a pull parser in a Rust library? (https://github.com/raphlinus/pulldown-cmark)
- Let Rust detect changes in the Markdown file and generate HTML.
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Show HN: A Graphviz Implementation in Rust
Really glad to see this! Really want an easy way to render graphs in Rust without resorting to the graphiz binary.
What is the current status? Not seeing it listed anywhere, like if there are features that are not supported or if it uses certain layout algorithms but others are desired.
Would you be willing to make a `[lib]` available? I see you have a `lib.rs` but it'd be great if using it didn't require pulling in `[[bin]]` dependencies (you can mark them as optional and mark `required-features` on your bin like pulldown-cmark does [0] or split it into a separate crate in a workspace). It'd also be good to find an available name for the lib and get it published (looks like someone might be squatting on `layout`).
[0] https://github.com/raphlinus/pulldown-cmark/blob/master/Carg...
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Using Rust with Elixir for code reuse and performance
Author here. I actually was not aware of cmark.ex - thanks for pointing it out.
In this case the code reuse was more important than pure native speed. We already had a Rust library that used pulldown-cmark [1] with some custom tweaks that we wanted to duplicate. Maybe this behavior could have been copied using cmark.ex too (we thought about doing this in pure Elixir, as mentioned in the post), but given how straightforward Rustler made integrating our existing code, this seems like the better choice.
[1] https://github.com/raphlinus/pulldown-cmark
It turned out that making the most popular Elixir Markdown processor, Earmark (originally written by Dave Thomas) and pulldown-cmark, a Rust Markdown processor, produce the same output was going to be difficult. We also required some customization that was not available in both libraries.
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What are some examples of particularly well written crates?
The crate that's closest to production quality code is pulldown-cmark, but I don't hold it up as an example of well-written code, because it's not particularly easy to understand and there's a lot of very low level code to consume the CommonMark syntax - that helps with code bloat and compile time, but not clarity.
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What are the Markdown features/extensions enabled in mdbook?
The Markdown processor is pulldown-cmark, which supports these extensions:
JSMN
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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?
mdBook - Create book from markdown files. Like Gitbook but implemented in Rust
cJSON - Ultralightweight JSON parser in ANSI C
nimler - Erlang/Elixir NIFs in Nim
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/
doctave - A batteries-included developer documentation site generator
Jansson - C library for encoding, decoding and manipulating JSON data
cmark - CommonMark parsing and rendering library and program in C
RapidJSON - A fast JSON parser/generator for C++ with both SAX/DOM style API
rust - Empowering everyone to build reliable and efficient software.
ArduinoJson - 📟 JSON library for Arduino and embedded C++. Simple and efficient.
cmark - 💧 Elixir NIF for cmark (C), a parser library following the CommonMark spec, a compatible implementation of Markdown.
json - JSON for Modern C++