uuid

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/uuid.go	Sat Sep 27 20:53:17 2014 -0400
     1.3 @@ -0,0 +1,76 @@
     1.4 +package uuid
     1.5 +
     1.6 +import (
     1.7 +	"database/sql/driver"
     1.8 +	"encoding/hex"
     1.9 +	"encoding/json"
    1.10 +	"errors"
    1.11 +
    1.12 +	"code.google.com/p/go-uuid/uuid"
    1.13 +)
    1.14 +
    1.15 +var InvalidIDError = errors.New("Invalid ID format.")
    1.16 +
    1.17 +type ID uuid.UUID
    1.18 +
    1.19 +func NewID() ID {
    1.20 +	return ID(uuid.NewRandom())
    1.21 +}
    1.22 +
    1.23 +func (id ID) MarshalJSON() ([]byte, error) {
    1.24 +	return json.Marshal(id.String())
    1.25 +}
    1.26 +
    1.27 +func (id ID) String() string {
    1.28 +	return hex.EncodeToString([]byte(id))
    1.29 +}
    1.30 +
    1.31 +func (id ID) Value() (driver.Value, error) {
    1.32 +	return id.String(), nil
    1.33 +}
    1.34 +
    1.35 +func (id *ID) Scan(src interface{}) error {
    1.36 +	if src == nil {
    1.37 +		id = nil
    1.38 +		return nil
    1.39 +	}
    1.40 +	switch src.(type) {
    1.41 +	case []byte:
    1.42 +		newID, err := Parse(string(src.([]byte)))
    1.43 +		*id = append((*id)[:0], newID...)
    1.44 +		return err
    1.45 +	case string:
    1.46 +		newID, err := Parse(src.(string))
    1.47 +		*id = append((*id)[:0], newID...)
    1.48 +		return err
    1.49 +	default:
    1.50 +		return InvalidIDError
    1.51 +	}
    1.52 +	return nil
    1.53 +}
    1.54 +
    1.55 +func (id *ID) UnmarshalJSON(in []byte) error {
    1.56 +	var tmp string
    1.57 +	err := json.Unmarshal(in, &tmp)
    1.58 +	if err != nil {
    1.59 +		return err
    1.60 +	}
    1.61 +	newID, err := Parse(tmp)
    1.62 +	if err != nil {
    1.63 +		return err
    1.64 +	}
    1.65 +	*id = append((*id)[:0], newID...)
    1.66 +	return nil
    1.67 +}
    1.68 +
    1.69 +func Parse(in string) (ID, error) {
    1.70 +	b, err := hex.DecodeString(in)
    1.71 +	if err != nil {
    1.72 +		return nil, err
    1.73 +	}
    1.74 +	return ID(b), nil
    1.75 +}
    1.76 +
    1.77 +func (id ID) Equal(other ID) bool {
    1.78 +	return uuid.Equal(uuid.UUID(id), uuid.UUID(other))
    1.79 +}