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docopt-go
=========
[](https://travis-ci.org/docopt/docopt.go)
[](https://coveralls.io/r/docopt/docopt.go)
[](https://godoc.org/github.com/docopt/docopt.go)
An implementation of [docopt](http://docopt.org/) in the
[Go](http://golang.org/) programming language.
**docopt** helps you create *beautiful* command-line interfaces easily:
```go
package main
import (
"fmt"
"github.com/docopt/docopt-go"
)
func main() {
usage := `Naval Fate.
Usage:
naval_fate ship new <name>...
naval_fate ship <name> move <x> <y> [--speed=<kn>]
naval_fate ship shoot <x> <y>
naval_fate mine (set|remove) <x> <y> [--moored|--drifting]
naval_fate -h | --help
naval_fate --version
Options:
-h --help Show this screen.
--version Show version.
--speed=<kn> Speed in knots [default: 10].
--moored Moored (anchored) mine.
--drifting Drifting mine.`
arguments, _ := docopt.Parse(usage, nil, true, "Naval Fate 2.0", false)
fmt.Println(arguments)
}
```
**docopt** parses command-line arguments based on a help message. Don't
write parser code: a good help message already has all the necessary
information in it.
## Installation
⚠ Use the alias “docopt-go”. To use docopt in your Go code:
```go
import "github.com/docopt/docopt-go"
```
To install docopt according to your `$GOPATH`:
```console
$ go get github.com/docopt/docopt-go
```
## API
```go
func Parse(doc string, argv []string, help bool, version string,
optionsFirst bool, exit ...bool) (map[string]interface{}, error)
```
Parse `argv` based on the command-line interface described in `doc`.
Given a conventional command-line help message, docopt creates a parser and
processes the arguments. See
https://github.com/docopt/docopt#help-message-format for a description of the
help message format. If `argv` is `nil`, `os.Args[1:]` is used.
docopt returns a map of option names to the values parsed from `argv`, and an
error or `nil`.
More documentation for docopt is available at
[GoDoc.org](https://godoc.org/github.com/docopt/docopt.go).
## Testing
All tests from the Python version are implemented and passing
at [Travis CI](https://travis-ci.org/docopt/docopt.go). New
language-agnostic tests have been added
to [test_golang.docopt](test_golang.docopt).
To run tests for docopt-go, use `go test`.
|
