mirror of
https://github.com/google/nomulus.git
synced 2025-04-30 20:17:51 +02:00
daca7d65c2
Per mcilwain's suggestion in the LRP design doc, LRP tokens should use a Base58 alphabet. I'll move PasswordGenerator out of the tools package and into a utils class in a future CL, as we'll want to use this generator in the LrpToken class itself rather than relegate the token definition to a tool. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=132358363
44 lines
1.6 KiB
Java
44 lines
1.6 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
|
|
//
|
|
// Licensed 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 google.registry.tools;
|
|
|
|
import static com.google.common.base.Preconditions.checkArgument;
|
|
import static com.google.common.base.Strings.isNullOrEmpty;
|
|
|
|
/** String generator. */
|
|
abstract class StringGenerator {
|
|
|
|
/** A class containing different alphabets used to generate strings. */
|
|
public static class Alphabets {
|
|
|
|
/** A URL-safe Base64 alphabet (alphanumeric, hyphen, underscore). */
|
|
public static final String BASE_64 =
|
|
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-";
|
|
|
|
/** An alphanumeric alphabet that omits visually similar characters. */
|
|
public static final String BASE_58 =
|
|
"123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
|
|
}
|
|
|
|
protected String alphabet;
|
|
|
|
StringGenerator(String alphabet) {
|
|
checkArgument(!isNullOrEmpty(alphabet), "Alphabet cannot be null or empty.");
|
|
this.alphabet = alphabet;
|
|
}
|
|
|
|
/** Generates a string of a specified length. */
|
|
abstract String createString(int length);
|
|
}
|