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2020dcb50f
Make every dependency request explicit on what encoding is used. Also get rid of InjectRule in XjcToDomainResourceConverterTest. Random number generator providers are separated to secure and insecure ones. The insecure ones must be explicitly requested (usually for use cases where security is not of concern, for better speed). ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=217921422
59 lines
2.1 KiB
Java
59 lines
2.1 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.util;
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import static com.google.common.base.Preconditions.checkArgument;
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import static com.google.common.base.Strings.isNullOrEmpty;
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import com.google.common.collect.ImmutableList;
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import java.io.Serializable;
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import java.util.Collection;
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/** String generator. */
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public abstract class StringGenerator implements Serializable {
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public static final int DEFAULT_PASSWORD_LENGTH = 16;
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/** A class containing different alphabets used to generate strings. */
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public static class Alphabets {
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/** A URL-safe Base64 alphabet (alphanumeric, hyphen, underscore). */
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public static final String BASE_64 =
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"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-";
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/** An alphanumeric alphabet that omits visually similar characters. */
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public static final String BASE_58 =
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"123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
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}
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protected String alphabet;
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protected StringGenerator(String alphabet) {
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checkArgument(!isNullOrEmpty(alphabet), "Alphabet cannot be null or empty.");
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this.alphabet = alphabet;
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}
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/** Generates a string of a specified length. */
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public abstract String createString(int length);
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/** Batch-generates an {@link ImmutableList} of strings of a specified length. */
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public Collection<String> createStrings(int length, int count) {
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ImmutableList.Builder<String> listBuilder = new ImmutableList.Builder<>();
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for (int i = 0; i < count; i++) {
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listBuilder.add(createString(length));
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}
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return listBuilder.build();
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}
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}
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