/usr/share/gocode/src/github.com/jessevdk/go-flags/examples/main.go is in golang-go-flags-dev 0.0~git20131216-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | package main
import (
"errors"
"fmt"
"github.com/jessevdk/go-flags"
"os"
"strconv"
"strings"
)
type EditorOptions struct {
Input string `short:"i" long:"input" description:"Input file" default:"-"`
Output string `short:"o" long:"output" description:"Output file" default:"-"`
}
type Point struct {
X, Y int
}
func (p *Point) UnmarshalFlag(value string) error {
parts := strings.Split(value, ",")
if len(parts) != 2 {
return errors.New("Expected two numbers separated by a ,")
}
x, err := strconv.ParseInt(parts[0], 10, 32)
if err != nil {
return err
}
y, err := strconv.ParseInt(parts[1], 10, 32)
if err != nil {
return err
}
p.X = int(x)
p.Y = int(y)
return nil
}
func (p Point) MarshalFlag() (string, error) {
return fmt.Sprintf("%d,%d", p.X, p.Y), nil
}
type Options struct {
// Example of verbosity with level
Verbose []bool `short:"v" long:"verbose" description:"Verbose output"`
// Example of optional value
User string `short:"u" long:"user" description:"User name" optional:"yes" optional-value:"pancake"`
// Example of map with multiple default values
Users map[string]string `long:"users" description:"User e-mail map" default:"system:system@example.org" default:"admin:admin@example.org"`
// Example of option group
Editor EditorOptions `group:"Editor Options"`
// Example of custom type Marshal/Unmarshal
Point Point `long:"point" description:"A x,y point" default:"1,2"`
}
var options Options
var parser = flags.NewParser(&options, flags.Default)
func main() {
if _, err := parser.Parse(); err != nil {
os.Exit(1)
}
}
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