001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.mail.resolver; 018 019import javax.activation.DataSource; 020import javax.activation.FileDataSource; 021import java.io.File; 022import java.io.IOException; 023 024/** 025 * Creates a <code>DataSource</code> based on an URL. The implementation 026 * also resolves file resources. 027 * 028 * @since 1.3 029 * @version $Id: DataSourceFileResolver.html 952467 2015-05-23 18:45:36Z tn $ 030 */ 031public class DataSourceFileResolver extends DataSourceBaseResolver 032{ 033 /** the base directory of the resource when resolving relative paths */ 034 private final File baseDir; 035 036 /** 037 * Constructor. 038 */ 039 public DataSourceFileResolver() 040 { 041 baseDir = new File("."); 042 } 043 044 /** 045 * Constructor. 046 * 047 * @param baseDir the base directory of the resource when resolving relative paths 048 */ 049 public DataSourceFileResolver(final File baseDir) 050 { 051 this.baseDir = baseDir; 052 } 053 054 /** 055 * Constructor. 056 * 057 * @param baseDir the base directory of the resource when resolving relative paths 058 * @param lenient shall we ignore resources not found or complain with an exception 059 */ 060 public DataSourceFileResolver(final File baseDir, final boolean lenient) 061 { 062 super(lenient); 063 this.baseDir = baseDir; 064 } 065 066 /** 067 * Get the base directory used for resolving relative resource locations. 068 * 069 * @return the baseUrl 070 */ 071 public File getBaseDir() 072 { 073 return baseDir; 074 } 075 076 /** {@inheritDoc} */ 077 public DataSource resolve(final String resourceLocation) throws IOException 078 { 079 return resolve(resourceLocation, isLenient()); 080 } 081 082 /** {@inheritDoc} */ 083 public DataSource resolve(final String resourceLocation, final boolean isLenient) throws IOException 084 { 085 File file; 086 DataSource result = null; 087 088 if (!isCid(resourceLocation)) 089 { 090 file = new File(resourceLocation); 091 092 if (!file.isAbsolute()) 093 { 094 file = getBaseDir() != null ? new File(getBaseDir(), resourceLocation) : new File(resourceLocation); 095 } 096 097 if (file.exists()) 098 { 099 result = new FileDataSource(file); 100 } 101 else 102 { 103 if (!isLenient) 104 { 105 throw new IOException("Cant resolve the following file resource :" + file.getAbsolutePath()); 106 } 107 } 108 } 109 110 return result; 111 } 112}