tomlini

SAX TOML/INI parser and editor. Zero dependencies, three-tier (core/alloc/std).

Features

• 18× faster parse than toml_edit (3.3 µs vs 59.5 µs for a 94-line Cargo.toml)
• 2–3× faster edits with batch commit (single index build, descending sort, one-pass span fixup)
• No footguns — every API path preserves formatting unless explicitly overridden
• Three tiers: core (zero alloc), alloc (full editing), std (error impls)
• Serde bridge via tomlini_serde for struct deserialization

Quick start

let mut doc = tomlini::parse("[server]\nport = 8080\n")?;

// Read
assert!(doc.has("server.port"));
let raw = doc.get("server.port").unwrap();         // "8080"
let val = doc.get_decoded("server.port").unwrap(); // "8080"

// Edit
doc.edit()
    .set("server.port", "9090")
    .insert("server", "host", "\"0.0.0.0\"")
        .with_above_comment("Bind address")
    .commit()?;

Feature flags

License

MIT OR Apache-2.0