| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package uuidutil |
| |
| import ( |
| "fmt" |
| |
| "github.com/gofrs/uuid/v5" |
| ) |
| |
| // New returns a new random UUIDv4. |
| func New() (uuid.UUID, error) { |
| id, err := uuid.NewV4() |
| if err != nil { |
| return uuid.Nil, err |
| } |
| return id, nil |
| } |
| |
| // ToDashless returns the uuid without dashes. |
| func ToDashless(id uuid.UUID) (string, error) { |
| s := id.String() |
| if s[8] != '-' { |
| return "", fmt.Errorf("expected - at char 9: %q", s) |
| } |
| if s[13] != '-' { |
| return "", fmt.Errorf("expected - at char 14: %q", s) |
| } |
| if s[18] != '-' { |
| return "", fmt.Errorf("expected - at char 19: %q", s) |
| } |
| if s[23] != '-' { |
| return "", fmt.Errorf("expected - at char 24: %q", s) |
| } |
| return s[0:8] + s[9:13] + s[14:18] + s[19:23] + s[24:], nil |
| } |
| |
| // FromString returns the uuid from the string. |
| // |
| // As opposed to uuid.FromString, this only accepts uuids with dashes. |
| // Always use this instead of uuid.FromString. |
| func FromString(s string) (uuid.UUID, error) { |
| if len(s) != 36 { |
| return uuid.Nil, fmt.Errorf("expected uuid to be of length 36 but was %d: %s", len(s), s) |
| } |
| return uuid.FromString(s) |
| } |
| |
| // FromDashless returns the dashless uuid with dashes. |
| func FromDashless(dashless string) (uuid.UUID, error) { |
| if len(dashless) != 32 { |
| return uuid.Nil, fmt.Errorf("expected dashless uuid to be of length 32 but was %d: %s", len(dashless), dashless) |
| } |
| // FromString accepts both dashless and regular, we do this because we need to add our own FromString that does not accept dashless |
| return FromString(dashless[0:8] + "-" + dashless[8:12] + "-" + dashless[12:16] + "-" + dashless[16:20] + "-" + dashless[20:]) |
| } |
| |
| // Validate determines if the given UUID string is valid. |
| func Validate(s string) error { |
| _, err := FromString(s) |
| return err |
| } |
| |
| // ValidateDashless validates the dashless uuid is valid. |
| func ValidateDashless(dashless string) error { |
| _, err := FromDashless(dashless) |
| return err |
| } |
| |
| // FromStringSlice returns a slice of uuids from the string slice. |
| // |
| // This only accepts uuids with dashes. |
| func FromStringSlice(s []string) ([]uuid.UUID, error) { |
| var parsedUUIDS []uuid.UUID |
| for _, stringID := range s { |
| parsed, err := FromString(stringID) |
| if err != nil { |
| return nil, err |
| } |
| parsedUUIDS = append(parsedUUIDS, parsed) |
| } |
| return parsedUUIDS, nil |
| } |