| /* |
| * 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.ivy.core.cache; |
| |
| /** |
| * Utility class providing some cache related facilities. |
| * |
| */ |
| public final class CacheUtil { |
| |
| /** |
| * Checks that the given pattern is acceptable as a cache pattern |
| * |
| * @param cachePattern |
| * the pattern to check |
| * @throws IllegalArgumentException |
| * if the pattern isn't acceptable as cache pattern |
| */ |
| public static void checkCachePattern(String cachePattern) { |
| if (cachePattern == null) { |
| throw new IllegalArgumentException("null cache pattern not allowed."); |
| } |
| if (cachePattern.startsWith("..")) { |
| throw new IllegalArgumentException("invalid cache pattern: '" + cachePattern |
| + "': cache patterns must not lead outside cache directory"); |
| } |
| if (cachePattern.startsWith("/")) { |
| throw new IllegalArgumentException("invalid cache pattern: '" + cachePattern |
| + "': cache patterns must not be absolute"); |
| } |
| } |
| |
| private CacheUtil() { |
| } |
| } |