/*
* Copyright 2014 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.guvnor.common.services.backend.archive;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.zip.ZipEntry;
import javax.inject.Inject;
import javax.inject.Named;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.file.DirectoryStream;
import org.uberfire.java.nio.file.Files;
import org.uberfire.java.nio.file.Path;
public class Archiver {
private Path originalPath;
private ZipWriter zipWriter;
private IOService ioService;
public Archiver() {
}
@Inject
public Archiver(@Named("ioStrategy") IOService ioService) {
this.ioService = ioService;
}
public void archive( final ByteArrayOutputStream outputStream,
final String uri ) throws IOException, URISyntaxException {
init(outputStream, uri);
zip();
}
private void zip() throws IOException {
if (Files.isDirectory(originalPath)) {
addPath(Files.newDirectoryStream(originalPath));
} else {
addFile(originalPath);
}
zipWriter.close();
}
private void init( final ByteArrayOutputStream outputStream,
final String uri ) throws URISyntaxException {
this.originalPath = ioService.get(new URI(uri));
this.zipWriter = new ZipWriter( outputStream );
}
private void addPath(DirectoryStream<Path> directoryStream) throws IOException {
for (Path subPath : directoryStream) {
if (Files.isDirectory(subPath)) {
addPath(Files.newDirectoryStream(subPath));
} else {
addFile(subPath);
}
}
}
private void addFile( final Path subPath ) throws IOException {
zipWriter.addFile( getZipEntry( subPath ),
ioService.newInputStream( subPath ) );
}
private ZipEntry getZipEntry( final Path subPath ) {
return new ZipEntry(FileNameResolver.resolve(subPath.toUri().getPath(), originalPath.toUri().getPath()));
}
static class FileNameResolver {
static protected String resolve( final String subPath,
final String originalPath ) {
if ("/".equals(originalPath)) {
return subPath.substring(originalPath.length());
} else {
return getBaseFolder(originalPath) + subPath.substring(originalPath.length() + 1);
}
}
private static String getBaseFolder( final String originalPath ) {
if (originalPath.contains("/")) {
return originalPath.substring(originalPath.lastIndexOf("/") + 1) + "/";
} else {
return originalPath + "/";
}
}
}
}