clib

clib is yet another golang command line parser.

Install

$ go get github.com/owlinux1000/clib

Example

Here is a sample implemented like git add -u .

package main

import (
    "os"
    "fmt"
    "github.com/owlinux1000/clib"
)

func main() {

    app, err := clib.NewApp("mygit", "1.0.0", "A toy git client")
    if err != nil {
        panic(err)
    }
    
    if err := app.AddCommand("add", "a", "Add file contents to the index", 0); err != nil {
        panic(err)
    }
    
    if err := app.AddOption("-u", "update tracked files", 0); err != nil {
        panic(err)
    }
    
    exitStatus, err := app.Parse(os.Args)
    if err != nil {
        panic(err)
    }

    if ok, _ := app.OptionFlag("-h"); ok {
        fmt.Println(app.Usage())
        os.Exit(exitStatus)
    }

    if ok, _ := app.CommandFlag("add"); ok {
        fmt.Println("You executed `mygit add`")
        if ok, _ := app.OptionFlag("-u"); ok {
            fmt.Println("You executed `mygit add -u`")
        }
    }
    
}

The result executed go run is here.

$ mygit

A toy git client

Usage: 
	mygit [option]
	mygit <command>

Options:
	-h		Display this message
	-u		update tracked files
	-v		Print version info and exit

Commands:
	add		Add file contents to the index