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envim - Go environment variables for human

Build status Go Report Card GoDoc

Why envim?

Just another (better) way for managing environment variables from Go code, but written for human.

Installation

go get -u github.com/cuonglm/envim

Usage

package main

import (
	"fmt"

	env "github.com/cuonglm/envim"
)

func main() {

	// Clean environment variables
	env.Clear()

	// Set a variable
	_ = env.Set("foo", "foo")
	_ = env.Set("fooo", "")
	_ = env.Set("GOPATH", "/home/cuonglm/go")
	_ = env.Set("GOROOT", "/home/cuonglm/sources/go")

	// Get a variable
	fmt.Println(env.Get("foo"))
	fmt.Println(env.Get("fooo"))

	// Check environment variable is set
	fmt.Println(env.IsSet("foo"))
	fmt.Println(env.IsSet("NotSetVar"))

	// Unset a variable
	_ = env.Unset("fooo")

	// Get all variables into map
	fmt.Printf("%+v\n", env.Map())

	// Like Map(), but variable with prefix only
	fmt.Printf("%+v\n", env.MapWithPrefix("GO"))

	// Update environment variables from a map
	// skipped invalid
	m := map[string]string{"bar": "bar", "=": "equal"}
	env.FromMap(m)
	fmt.Printf("%+v\n", env.Map())
}

Run that file give you:

$ go run envim_example.go
foo

true
false
map[foo:foo GOPATH:/home/cuonglm/go GOROOT:/home/cuonglm/sources/go]
map[GOROOT:/home/cuonglm/sources/go GOPATH:/home/cuonglm/go]
map[foo:foo GOPATH:/home/cuonglm/go GOROOT:/home/cuonglm/sources/go bar:bar]

Author

Cuong Manh Le cuong.manhle.vn@gmail.com

License

See LICENSE

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