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 java.io.IOException; 020import java.nio.file.Files; 021import java.nio.file.OpenOption; 022import java.nio.file.Path; 023import java.nio.file.Paths; 024 025import javax.activation.DataSource; 026import javax.activation.FileTypeMap; 027 028import org.apache.commons.mail.activation.PathDataSource; 029 030/** 031 * Creates a {@link DataSource} based on a {@link Path}. The implementation also resolves file resources. 032 * 033 * @since 1.6.0 034 */ 035public final class DataSourcePathResolver extends DataSourceBaseResolver { 036 037 /** The base directory of the resource when resolving relative paths */ 038 private final Path baseDir; 039 private final OpenOption[] options; 040 041 /** 042 * Constructs a new instance. 043 */ 044 public DataSourcePathResolver() { 045 this(Paths.get(".")); 046 } 047 048 /** 049 * Constructs a new instance. 050 * 051 * @param baseDir the base directory of the resource when resolving relative paths 052 */ 053 public DataSourcePathResolver(final Path baseDir) { 054 this(baseDir, false); 055 } 056 057 /** 058 * Constructs a new instance. 059 * 060 * @param baseDir the base directory of the resource when resolving relative paths 061 * @param lenient shall we ignore resources not found or complain with an exception 062 * @param options options for opening streams. 063 */ 064 public DataSourcePathResolver(final Path baseDir, final boolean lenient, final OpenOption... options) { 065 super(lenient); 066 this.baseDir = baseDir; 067 this.options = options; 068 } 069 070 /** 071 * Gets the base directory used for resolving relative resource locations. 072 * 073 * @return the baseUrl 074 */ 075 public Path getBaseDir() { 076 return baseDir; 077 } 078 079 /** {@inheritDoc} */ 080 @Override 081 public DataSource resolve(final String resourceLocation) throws IOException { 082 return resolve(resourceLocation, isLenient()); 083 } 084 085 /** {@inheritDoc} */ 086 @Override 087 public DataSource resolve(final String resourceLocation, final boolean isLenient) throws IOException { 088 Path file; 089 DataSource result = null; 090 091 if (!isCid(resourceLocation)) { 092 file = Paths.get(resourceLocation); 093 094 if (!file.isAbsolute()) { 095 file = getBaseDir() != null ? getBaseDir().resolve(resourceLocation) : Paths.get(resourceLocation); 096 } 097 098 if (Files.exists(file)) { 099 result = new PathDataSource(file, FileTypeMap.getDefaultFileTypeMap(), options); 100 } else if (!isLenient) { 101 throw new IOException("Cant resolve the following file resource :" + file.toAbsolutePath()); 102 } 103 } 104 105 return result; 106 } 107}