| /* |
| * 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 org.apache.logging.log4j.core.util; |
| |
| /** |
| * Pattern strings used throughout Log4j. |
| * |
| * @see java.util.regex.Pattern |
| */ |
| public final class Patterns { |
| |
| /** |
| * A pattern string for comma separated lists with optional whitespace. |
| */ |
| public static final String COMMA_SEPARATOR = toWhitespaceSeparator(","); |
| |
| /** |
| * The whitespace pattern string. |
| */ |
| public static final String WHITESPACE = "\\s*"; |
| |
| private Patterns() { |
| } |
| |
| /** |
| * Creates a pattern string for {@code separator} surrounded by whitespace. |
| * |
| * @param separator The separator. |
| * @return a pattern for {@code separator} surrounded by whitespace. |
| */ |
| public static String toWhitespaceSeparator(final String separator) { |
| return WHITESPACE + separator + WHITESPACE; |
| } |
| } |