| /* |
| * 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.commons.mail.resolver; |
| |
| import javax.activation.DataSource; |
| import javax.activation.FileTypeMap; |
| import javax.mail.util.ByteArrayDataSource; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * Creates a {@code DataSource} based on an class path. |
| * |
| * @since 1.3 |
| */ |
| public class DataSourceClassPathResolver extends DataSourceBaseResolver |
| { |
| /** the base string of the resource relative to the classpath when resolving relative paths */ |
| private final String classPathBase; |
| |
| /** |
| * Constructor |
| */ |
| public DataSourceClassPathResolver() |
| { |
| this.classPathBase = "/"; |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param classPathBase a base class path |
| */ |
| public DataSourceClassPathResolver(final String classPathBase) |
| { |
| this.classPathBase = classPathBase.endsWith("/") ? classPathBase : classPathBase + "/"; |
| } |
| |
| /** |
| * Constructor. |
| * |
| * @param classPathBase a base class path |
| * @param lenient shall we ignore resources not found or throw an exception? |
| */ |
| public DataSourceClassPathResolver(final String classPathBase, final boolean lenient) |
| { |
| super(lenient); |
| this.classPathBase = classPathBase.endsWith("/") ? classPathBase : classPathBase + "/"; |
| } |
| |
| /** |
| * @return the classPathBase |
| */ |
| public String getClassPathBase() |
| { |
| return classPathBase; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public DataSource resolve(final String resourceLocation) throws IOException |
| { |
| return resolve(resourceLocation, isLenient()); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public DataSource resolve(final String resourceLocation, final boolean isLenient) throws IOException |
| { |
| DataSource result = null; |
| |
| try |
| { |
| if (!isCid(resourceLocation) && !isHttpUrl(resourceLocation)) |
| { |
| final String mimeType = FileTypeMap.getDefaultFileTypeMap().getContentType(resourceLocation); |
| final String resourceName = getResourceName(resourceLocation); |
| final InputStream is = DataSourceClassPathResolver.class.getResourceAsStream(resourceName); |
| |
| if (is != null) |
| { |
| try |
| { |
| final ByteArrayDataSource ds = new ByteArrayDataSource(is, mimeType); |
| // EMAIL-125: set the name of the DataSource to the normalized resource URL |
| // similar to other DataSource implementations, e.g. FileDataSource, URLDataSource |
| ds.setName(DataSourceClassPathResolver.class.getResource(resourceName).toString()); |
| result = ds; |
| } |
| finally |
| { |
| is.close(); |
| } |
| } |
| else |
| { |
| if (isLenient) |
| { |
| return null; |
| } |
| throw new IOException("The following class path resource was not found : " + resourceLocation); |
| } |
| } |
| |
| |
| return result; |
| } |
| catch (final IOException e) |
| { |
| if (isLenient) |
| { |
| return null; |
| } |
| throw e; |
| } |
| } |
| |
| /** |
| * Returns the resource name for a given resource location. |
| * |
| * @param resourceLocation the resource location |
| * @return {@link #getClassPathBase()} + {@code resourceLocation} |
| * @see #getClassPathBase() |
| */ |
| private String getResourceName(final String resourceLocation) |
| { |
| return (getClassPathBase() + resourceLocation).replaceAll("//", "/"); |
| } |
| } |