How can I pretty-print JSON using Go?

Question

Does anyone know of a simple way to pretty-print JSON output in Go?

The stock http://golang.org/pkg/encoding/json/ package does not seem to include functiona

Answer 1

Here is my solution:

import (
    "bytes"
    "encoding/json"
)

const (
    empty = ""
    tab   = "\t"
)

func PrettyJson(data interface{}) (string, error) {
    buffer := new(bytes.Buffer)
    encoder := json.NewEncoder(buffer)
    encoder.SetIndent(empty, tab)

    err := encoder.Encode(data)
    if err != nil {
       return empty, err
    }
    return buffer.String(), nil
}