EldoDebug

EldoDebug / fastoml

Public

The Fastest TOML Parser for C

simd toml
11
0
100% credibility
Found Feb 23, 2026 at 10 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
C
AI Summary

fastoml is a high-performance, single-header C library for parsing, validating, building, and serializing TOML configuration files.

How It Works

1
📰 Discover fastoml

You hear about fastoml, a super speedy tool for reading and writing simple config files in TOML format.

2
📥 Grab the file

Download the single easy file and drop it right into your project's folder.

3
✨ Unlock its power

In one place in your code, add a simple line to turn on the tool's magic.

4
📖 Feed it config text

Hand over the text from your config file, and it neatly organizes all the info.

5
🔍 Pull out settings

Easily grab details like addresses, numbers, lists, or switches from the organized info.

6
🛠️ Build new configs

Create fresh config setups from scratch and turn them back into readable text.

🚀 Configs fly fast

Your program now handles config files lightning-quick, way faster than others.

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Star Growth

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AI-Generated Review

What is fastoml?

fastoml is a single-header C99 library that parses, validates, builds, and serializes full TOML documents with detailed error reporting including line and column positions. It solves the problem of slow config parsing in performance-critical C or C++ apps by delivering blazing parse speeds—up to 242 MiB/s on large files—while supporting parser reuse, custom allocators, and cross-platform deployment on Windows, Linux, and macOS. Drop the header in your project, define the implementation once, and access values via simple table lookups and type conversions.

Why is it gaining traction?

It crushes alternatives like toml++ and toml11 in benchmarks, with 2-7x speedups on valid inputs and up to 140x on medium files, making it the fastest TOML parser around. Developers dig the optional SIMD boosts, arena allocation for low overhead, and builder API for generating TOML without hassle. In a world chasing the fastest GitHub repos for perf tools, fastoml hooks C devs tired of bloated parsers.

Who should use this?

C or C++ backend engineers building servers, game engines, or CLI tools that ingest large TOML configs need this for throughput without sacrificing completeness. Embedded devs parsing settings on tight hardware will appreciate the minimal footprint and reuse. Skip if you're in higher-level langs or don't hit parse bottlenecks.

Verdict

Try fastoml if TOML perf is your bottleneck—benchmarks don't lie, and the API is clean—but with only 10 stars and 1.0% credibility, treat it as experimental. Solid docs and tests help, but production use demands your own validation first.

(198 words)

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