/*
* 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.tika.server;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.UUID;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipOutputStream;
@Provider
@Produces("application/zip")
public class ZipWriter implements MessageBodyWriter<Map<String, byte[]>> {
private static void zipStoreBuffer(ZipArchiveOutputStream zip, String name, byte[] dataBuffer) throws IOException {
ZipEntry zipEntry = new ZipEntry(name!=null?name: UUID.randomUUID().toString());
zipEntry.setMethod(ZipOutputStream.STORED);
zipEntry.setSize(dataBuffer.length);
CRC32 crc32 = new CRC32();
crc32.update(dataBuffer);
zipEntry.setCrc(crc32.getValue());
try {
zip.putArchiveEntry(new ZipArchiveEntry(zipEntry));
} catch (ZipException ex) {
if (name!=null) {
zipStoreBuffer(zip, "x-"+name, dataBuffer);
return;
}
}
zip.write(dataBuffer);
zip.closeArchiveEntry();
}
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return Map.class.isAssignableFrom(type);
}
public long getSize(Map<String, byte[]> stringMap, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return -1;
}
public void writeTo(Map<String, byte[]> parts, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
ZipArchiveOutputStream zip = new ZipArchiveOutputStream(entityStream);
zip.setMethod(ZipArchiveOutputStream.STORED);
for (Map.Entry<String, byte[]> entry : parts.entrySet()) {
zipStoreBuffer(zip, entry.getKey(), entry.getValue());
}
zip.close();
}
}