zenmoto / go-toml

Go library for the TOML language

go-toml

Go library for the TOML format.

This library supports TOML version v0.4.0

Features

Go-toml provides the following features for using data parsed from TOML documents:

• Load TOML documents from files and string data
• Easily navigate TOML structure using Tree
• Mashaling and unmarshaling to and from data structures
• Line & column position data for all parsed elements
• Query support similar to JSON-Path
• Syntax errors contain line and column numbers

Import

import "github.com/pelletier/go-toml"

Usage example

Read a TOML document:

config, _ := toml.Load(`
[postgres]
user = "pelletier"
password = "mypassword"`)
// retrieve data directly
user := config.Get("postgres.user").(string)

// or using an intermediate object
postgresConfig := config.Get("postgres").(*toml.Tree)
password := postgresConfig.Get("password").(string)

Or use Unmarshal:

type Postgres struct {
    User     string
    Password string
}
type Config struct {
    Postgres Postgres
}

doc := []byte(`
[Postgres]
User = "pelletier"
Password = "mypassword"`)

config := Config{}
toml.Unmarshal(doc, &config)
fmt.Println("user=", config.Postgres.User)

Or use a query:

// use a query to gather elements without walking the tree
q, _ := query.Compile("$..[user,password]")
results := q.Execute(config)
for ii, item := range results.Values() {
    fmt.Println("Query result %d: %v", ii, item)
}

Documentation

The documentation and additional examples are available at godoc.org.

Tools

Go-toml provides two handy command line tools:

• tomll: Reads TOML files and lint them.

  go install github.com/pelletier/go-toml/cmd/tomll
  tomll --help
  

• tomljson: Reads a TOML file and outputs its JSON representation.

  go install github.com/pelletier/go-toml/cmd/tomljson
  tomljson --help
  

Contribute

Feel free to report bugs and patches using GitHub's pull requests system on pelletier/go-toml. Any feedback would be much appreciated!

Run tests

You have to make sure two kind of tests run:

1. The Go unit tests
2. The TOML examples base

You can run both of them using ./test.sh.

Fuzzing

The script ./fuzz.sh is available to run go-fuzz on go-toml.

Versioning

Go-toml follows Semantic Versioning. The supported version of TOML is indicated at the beginning of this document. The last two major versions of Go are supported (see Go Release Policy).

License

The MIT License (MIT). Read LICENSE.