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177 lines
5.0 KiB
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177 lines
5.0 KiB
Markdown
# go-toml
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Go library for the [TOML](https://toml.io/) format.
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This library supports TOML version
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[v1.0.0-rc.3](https://toml.io/en/v1.0.0-rc.3)
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[](https://pkg.go.dev/github.com/pelletier/go-toml)
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[](https://github.com/pelletier/go-toml/blob/master/LICENSE)
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[](https://dev.azure.com/pelletierthomas/go-toml-ci/_build/latest?definitionId=1&branchName=master)
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[](https://codecov.io/gh/pelletier/go-toml)
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[](https://goreportcard.com/report/github.com/pelletier/go-toml)
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[](https://app.fossa.io/projects/git%2Bgithub.com%2Fpelletier%2Fgo-toml?ref=badge_shield)
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## Development status
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**ℹ️ Consider go-toml v2!**
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The next version of go-toml is in [active development][v2-dev], and
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[nearing completion][v2-map].
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Though technically in beta, v2 is already more tested, [fixes bugs][v1-bugs],
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and [much faster][v2-bench]. If you only need reading and writing TOML documents
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(majority of cases), those features are implemented and the API unlikely to
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change.
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The remaining features will be added shortly. While pull-requests are welcome on
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v1, no active development is expected on it. When v2.0.0 is released, v1 will be
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deprecated.
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👉 [go-toml v2][v2]
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[v2]: https://github.com/pelletier/go-toml/tree/v2
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[v2-map]: https://github.com/pelletier/go-toml/discussions/506
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[v2-dev]: https://github.com/pelletier/go-toml/tree/v2
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[v1-bugs]: https://github.com/pelletier/go-toml/issues?q=is%3Aissue+is%3Aopen+label%3Av2-fixed
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[v2-bench]: https://github.com/pelletier/go-toml/tree/v2#benchmarks
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## Features
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Go-toml provides the following features for using data parsed from TOML documents:
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* Load TOML documents from files and string data
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* Easily navigate TOML structure using Tree
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* Marshaling and unmarshaling to and from data structures
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* Line & column position data for all parsed elements
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* [Query support similar to JSON-Path](query/)
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* Syntax errors contain line and column numbers
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## Import
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```go
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import "github.com/pelletier/go-toml"
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```
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## Usage example
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Read a TOML document:
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```go
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config, _ := toml.Load(`
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[postgres]
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user = "pelletier"
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password = "mypassword"`)
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// retrieve data directly
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user := config.Get("postgres.user").(string)
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// or using an intermediate object
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postgresConfig := config.Get("postgres").(*toml.Tree)
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password := postgresConfig.Get("password").(string)
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```
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Or use Unmarshal:
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```go
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type Postgres struct {
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User string
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Password string
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}
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type Config struct {
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Postgres Postgres
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}
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doc := []byte(`
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[Postgres]
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User = "pelletier"
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Password = "mypassword"`)
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config := Config{}
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toml.Unmarshal(doc, &config)
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fmt.Println("user=", config.Postgres.User)
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```
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Or use a query:
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```go
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// use a query to gather elements without walking the tree
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q, _ := query.Compile("$..[user,password]")
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results := q.Execute(config)
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for ii, item := range results.Values() {
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fmt.Printf("Query result %d: %v\n", ii, item)
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}
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```
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## Documentation
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The documentation and additional examples are available at
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[pkg.go.dev](https://pkg.go.dev/github.com/pelletier/go-toml).
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## Tools
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Go-toml provides three handy command line tools:
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* `tomll`: Reads TOML files and lints them.
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```
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go install github.com/pelletier/go-toml/cmd/tomll
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tomll --help
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```
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* `tomljson`: Reads a TOML file and outputs its JSON representation.
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```
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go install github.com/pelletier/go-toml/cmd/tomljson
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tomljson --help
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```
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* `jsontoml`: Reads a JSON file and outputs a TOML representation.
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```
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go install github.com/pelletier/go-toml/cmd/jsontoml
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jsontoml --help
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```
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### Docker image
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Those tools are also available as a Docker image from
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[dockerhub](https://hub.docker.com/r/pelletier/go-toml). For example, to
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use `tomljson`:
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```
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docker run -v $PWD:/workdir pelletier/go-toml tomljson /workdir/example.toml
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```
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Only master (`latest`) and tagged versions are published to dockerhub. You
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can build your own image as usual:
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```
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docker build -t go-toml .
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```
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## Contribute
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Feel free to report bugs and patches using GitHub's pull requests system on
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[pelletier/go-toml](https://github.com/pelletier/go-toml). Any feedback would be
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much appreciated!
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### Run tests
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`go test ./...`
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### Fuzzing
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The script `./fuzz.sh` is available to
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run [go-fuzz](https://github.com/dvyukov/go-fuzz) on go-toml.
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## Versioning
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Go-toml follows [Semantic Versioning](http://semver.org/). The supported version
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of [TOML](https://github.com/toml-lang/toml) is indicated at the beginning of
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this document. The last two major versions of Go are supported
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(see [Go Release Policy](https://golang.org/doc/devel/release.html#policy)).
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## License
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The MIT License (MIT) + Apache 2.0. Read [LICENSE](LICENSE).
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