com.izforge.izpack.installer.unpacker.LooseFileUnpacker Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2012 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* Copyright 2012 Tim Anderson
*
* 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 com.izforge.izpack.installer.unpacker;
import com.izforge.izpack.api.data.Pack;
import com.izforge.izpack.api.data.PackFile;
import com.izforge.izpack.api.exception.InstallerException;
import com.izforge.izpack.api.handler.Prompt;
import com.izforge.izpack.util.os.FileQueue;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Logger;
/**
* An unpacker for {@link Pack#loose loose} pack files.
*
* @author Tim Anderson
*/
public class LooseFileUnpacker extends FileUnpacker
{
/**
* The prompt to warn of missing files.
*/
private final Prompt prompt;
/**
* The logger.
*/
private static final Logger logger = Logger.getLogger(LooseFileUnpacker.class.getName());
/**
* Constructs a LooseFileUnpacker.
*
* @param cancellable determines if unpacking should be cancelled
* @param queue the file queue. May be {@code null}
* @param prompt the prompt to warn of missing files
*/
public LooseFileUnpacker(Cancellable cancellable, FileQueue queue, Prompt prompt)
{
super(cancellable, queue);
this.prompt = prompt;
}
/**
* Unpacks a pack file.
*
* @param file the pack file meta-data
* @param packInputStream the pack input stream
* @param target the target
* @throws IOException for any I/O error
* @throws InstallerException for any installer exception
*/
@Override
public void unpack(PackFile file, InputStream packInputStream, File target)
throws IOException, InstallerException
{
// Old way of doing the job by using the (absolute) sourcepath.
// Since this is very likely to fail and does not conform to the documentation prefer using relative
// path's
File resolvedFile = file.getFile();
if (!resolvedFile.exists())
{
// try alternative destination - the current working directory
// user.dir is likely (depends on launcher type) the current directory of the executable or
// jar-file...
final File userDir = new File(System.getProperty("user.dir"));
resolvedFile = new File(userDir, file.getRelativeSourcePath());
}
if (resolvedFile.exists())
{
InputStream stream = null;
try
{
stream = new FileInputStream(resolvedFile);
// may have a different length & last modified than we had at compile time, therefore we have to
// build a new PackFile for the copy process...
file = new PackFile(resolvedFile.getParentFile(), resolvedFile, file.getTargetPath(),
file.osConstraints(), file.override(), file.overrideRenameTo(),
file.blockable(), file.getAdditionals());
copy(file, stream, target);
}
catch (IOException e)
{
logger.warning("Error when copying file " + resolvedFile + ": " + e);
}
finally
{
try
{
if (stream != null)
stream.close();
}
catch(IOException e)
{
logger.warning("Error when closing stream: " + e);
}
}
}
else
{
// file not found. Since this file was loosely bundled, continue with the installation.
logger.warning("Could not find loosely bundled file: " + file.getRelativeSourcePath());
if (prompt.confirm(Prompt.Type.WARNING, "File not found", "Could not find loosely bundled file: "
+ file.getRelativeSourcePath(), Prompt.Options.OK_CANCEL) == Prompt.Option.OK)
{
throw new InstallerException("Installation cancelled");
}
}
}
}