001package org.apache.maven.plugins.enforcer; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import java.io.File; 023import java.io.IOException; 024 025/** 026 * The Class RequireFilesExist. 027 */ 028public class RequireFilesExist 029 extends AbstractRequireFiles 030{ 031 @Override 032 boolean checkFile( File file ) 033 { 034 // if we get here and the handle is null, treat it as a success 035 return file == null ? true : file.exists() && osIndependentNameMatch( file, true ); 036 } 037 038 @Override 039 String getErrorMsg() 040 { 041 return "Some required files are missing:" + System.lineSeparator(); 042 } 043 044 /** 045 * OSes like Windows are case insensitive, so this method will compare the file path with the actual path. A simple 046 * {@link File#exists()} is not enough for such OS. 047 * 048 * @param file the file to verify 049 * @param defaultValue value to return in case an IO exception occurs, should never happen as the file already 050 * exists 051 * @return 052 */ 053 private boolean osIndependentNameMatch( File file, boolean defaultValue ) 054 { 055 try 056 { 057 File absFile; 058 if ( !file.isAbsolute() ) 059 { 060 absFile = new File( new File( "." ).getCanonicalFile(), file.getPath() ); 061 } 062 else 063 { 064 absFile = file; 065 } 066 067 return absFile.toURI().equals( absFile.getCanonicalFile().toURI() ); 068 } 069 catch ( IOException e ) 070 { 071 return defaultValue; 072 } 073 } 074}