func ExampleMarshalIndent() {
type ColorGroup struct {
ID int
Name string
Colors []string
}
group := ColorGroup{
ID: 1,
Name: "Reds",
Colors: []string{"Crimson", "Red", "Ruby", "Maroon", "Dark amber"},
}
b, err := rjson.MarshalIndent(group, "", "\t")
if err != nil {
fmt.Println("error:", err)
}
os.Stdout.Write(b)
// Output:
// {
// ID: 1
// Name: "Reds"
// Colors: [
// "Crimson"
// "Red"
// "Ruby"
// "Maroon"
// "Dark amber"
// ]
// }
}
func main() {
flag.Parse()
if flag.NArg() > 0 {
fmt.Fprintf(os.Stderr, "rjson reads from stdin only")
os.Exit(2)
}
var marshal func(interface{}) ([]byte, error)
if *jsonOut {
if *indent == "" {
marshal = json.Marshal
} else {
marshal = func(v interface{}) ([]byte, error) {
return json.MarshalIndent(v, "", *indent)
}
}
} else {
if *indent == "" {
marshal = func(v interface{}) ([]byte, error) {
data, err := rjson.MarshalIndent(v, "", "")
if err != nil {
return data, err
}
// TODO: use Compact only when it compacts
// identifiers too.
var b bytes.Buffer
if err := rjson.Compact(&b, data); err != nil {
return nil, err
}
return b.Bytes(), nil
}
} else {
marshal = func(v interface{}) ([]byte, error) {
return rjson.MarshalIndent(v, "", *indent)
}
}
}
d := rjson.NewDecoder(os.Stdin)
d.UseNumber()
w := bufio.NewWriter(os.Stdout)
err := stream(w, d, marshal)
if err != nil {
fmt.Fprintf(os.Stderr, "rjson: %v", err)
os.Exit(1)
}
}