Godeps/_workspace/src/github.com/pborman/uuid/json.go


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// Copyright 2014 Google Inc.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package uuid

import "errors"

func (u UUID) MarshalJSON() ([]byte, error) {
    if len(u) != 16 {
        return []byte(`""`), nil
    }
    var js [38]byte
    js[0] = '"'
    encodeHex(js[1:], u)
    js[37] = '"'
    return js[:], nil
}

func (u *UUID) UnmarshalJSON(data []byte) error {
    if string(data) == `""` {
        return nil
    }
    if data[0] != '"' {
        return errors.New("invalid UUID format")
    }
    data = data[1 : len(data)-1]
    uu := Parse(string(data))
    if uu == nil {
        return errors.New("invalid UUID format")
    }
    *u = uu
    return nil
}