# sfparse-rs

**Repository Path**: mirrors_ngtcp2/sfparse-rs

## Basic Information

- **Project Name**: sfparse-rs
- **Description**: RFC 9651 Structured Field Values parser in Rust
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-12-08
- **Last Updated**: 2026-09-26

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# sfparse-rs

A `#![no_std]`, high-performance parser for HTTP Structured Field
Values ([RFC 8941](https://datatracker.ietf.org/doc/html/rfc8941) /
[RFC 9651](https://datatracker.ietf.org/doc/html/rfc9651)).

Designed for zero-copy and zero-allocation operation, `sfparse-rs`
parses input data in-place without allocating dynamic data structures
(such as maps, lists, or strings).  It provides minimal,
stream-oriented parsing primitives suitable for memory-constrained
environments and high-throughput network applications.

It is the port of [sfparse](https://github.com/ngtcp2/sfparse) written
in C.

This is an example of parsing [RFC
9218](https://datatracker.ietf.org/doc/html/rfc9218) Priority header
field:

```rust
use sfparse::{Parser, Value};

let mut urgency :i32 = 3;
let mut incremental = false;
let mut p = Parser::new("u=2, i".as_bytes());

loop {
    match p.parse_dict().unwrap() {
        None => break,
        Some(("u", Value::Integer(v))) if (0i64..=7i64).contains(&v) => urgency = v as i32,
        Some(("i", Value::Bool(v))) => incremental = v,
        _ => (),
    }
}

println!("urgency={urgency} incremental={incremental}");
```

## License

The MIT License

Copyright (c) 2024 sfparse-rs contributors