Pull in go-flags, modified to build on Solaris

github.com/jessevdk/go-flags/examples/main.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"github.com/calmh/syncthing/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)
+	}
+}