1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 package org.apache.maven.enforcer.rules.files; 20 21 import javax.inject.Named; 22 23 import java.io.File; 24 import java.io.IOException; 25 26 /** 27 * The Class RequireFilesExist. 28 */ 29 @Named("requireFilesExist") 30 public final class RequireFilesExist extends AbstractRequireFiles { 31 @Override 32 boolean checkFile(File file) { 33 // if we get here and the handle is null, treat it as a success 34 return file == null ? true : file.exists() && osIndependentNameMatch(file, true); 35 } 36 37 @Override 38 String getErrorMsg() { 39 return "Some required files are missing:" + System.lineSeparator(); 40 } 41 42 /** 43 * OSes like Windows are case insensitive, so this method will compare the file path with the actual path. A simple 44 * {@link File#exists()} is not enough for such OS. 45 * 46 * @param file the file to verify 47 * @param defaultValue value to return in case an IO exception occurs, should never happen as the file already 48 * exists 49 * @return 50 */ 51 private boolean osIndependentNameMatch(File file, boolean defaultValue) { 52 try { 53 File absFile; 54 if (!file.isAbsolute()) { 55 absFile = new File(new File(".").getCanonicalFile(), file.getPath()); 56 } else { 57 absFile = file; 58 } 59 60 return absFile.toURI().equals(absFile.getCanonicalFile().toURI()); 61 } catch (IOException e) { 62 return defaultValue; 63 } 64 } 65 }