| /* |
| * 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.felix.inventory; |
| |
| import java.io.IOException; |
| import java.util.zip.ZipOutputStream; |
| |
| /** |
| * This is an optional extension of the {@link InventoryPrinter}. |
| * If a inventory printer implements this interface, the printer |
| * can add additional attachments to the output of the |
| * configuration ZIP. |
| * <p> |
| * A service implementing this method must register itself as a |
| * {@link InventoryPrinter} but not as a {@link ZipAttachmentProvider} service. |
| * When writing output to a ZIP file, this method is called if the |
| * {@link InventoryPrinter} service implements this interface. |
| */ |
| public interface ZipAttachmentProvider |
| { |
| |
| /** |
| * Add attachments to the zip output stream. The attachment provider can add |
| * as many attachments in any format as it wants. However it should use the |
| * namePrefix to create unique names / paths inside the zip. |
| * <p> |
| * The general pattern is to do for each entry to be added: |
| * <ol> |
| * <li>Create ZipEntry with a name composed of {@code namePrefix} and a name |
| * unique to the attachement provider, e.g. {@code namePrefix + "att1.txt"}. |
| * </li> |
| * <li>Add the ZipEntry to the ZIP file {@code zos}.</li> |
| * <li>Write the contents of the entry; for example copying a filesystem |
| * file to the ZIP file {@code zos}.</li> |
| * <li>Close the ZipEntry.</li> |
| * </ol> |
| * @param zos The zip output stream. |
| * @param namePrefix Name prefix to use for zip entries. Ends with a slash. |
| * |
| * @throws IOException If an error occurrs writing the ZIP entry. This may |
| * also be caused by reading some file system file to be added |
| * to the ZIP file. |
| */ |
| void addAttachments(final ZipOutputStream zos, final String namePrefix) throws IOException; |
| } |