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/*******************************************************************************
* Copyright (c) 2016, 2018 Red Hat.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Red Hat - Initial Contribution
*******************************************************************************/
package org.eclipse.linuxtools.internal.docker.ui.testutils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;
import org.eclipse.ui.wizards.datatransfer.IImportStructureProvider;
/**
* Copy of the org.eclipse.ui.wizards.datatransfer.FileSystemStructureProvider
* with the following changes : - Removed the singleton nature of the original
* class - Only returns modified files between source and destination
* directories
*
*/
@SuppressWarnings("restriction")
public class SyncFileSystemStructureProvider implements IImportStructureProvider {
private final IPath source;
private final IPath destination;
private final List<String> ignoredRelativePaths;
/**
* Creates an instance of <code>SyncFileSystemStructureProvider</code>.
*
* @param source
*/
private SyncFileSystemStructureProvider(final IPath source, final IPath destination, final List<String> ignoredRelativePaths) {
super();
this.source = source;
this.destination = destination;
this.ignoredRelativePaths = ignoredRelativePaths;
}
/*
* (non-Javadoc) Method declared on IImportStructureProvider
*/
@Override
public List<File> getChildren(Object element) {
File folder = (File) element;
String[] children = folder.list();
int childrenLength = children == null ? 0 : children.length;
List<File> result = new ArrayList<>(childrenLength);
for (int i = 0; i < childrenLength; i++) {
File sourceFile = new File(folder, children[i]);
IPath relativeSourcePath = new Path(sourceFile.getAbsolutePath()).makeRelativeTo(source);
// always add the sub directories
if (ignoredRelativePaths.contains(relativeSourcePath.lastSegment())) {
continue;
}
if (sourceFile.isDirectory() && !ignoredRelativePaths.contains(relativeSourcePath.lastSegment())) {
result.addAll(getChildren(sourceFile));
}
// only add the other files if they are missing or were modified in
// the destination destination
else {
IPath relativeDestinationPath = destination.append(relativeSourcePath);
File destinationFile = new File(relativeDestinationPath.toOSString());
if (!destinationFile.exists() || destinationFile.lastModified() < sourceFile.lastModified()) {
result.add(sourceFile);
}
}
}
return result;
}
@Override
public InputStream getContents(Object element) {
try {
return new FileInputStream((File) element);
} catch (FileNotFoundException e) {
IDEWorkbenchPlugin.log(e.getLocalizedMessage(), e);
return null;
}
}
@Override
public String getFullPath(Object element) {
return ((File) element).getPath();
}
@Override
public String getLabel(Object element) {
// Get the name - if it is empty then return the path as it is a file
// root
File file = (File) element;
String name = file.getName();
if (name.length() == 0) {
return file.getPath();
}
return name;
}
@Override
public boolean isFolder(Object element) {
return ((File) element).isDirectory();
}
public static class Builder {
private final IPath source;
private final IPath destination;
private final List<String> ignoredRelativePaths = new ArrayList<>();
public Builder(final IPath source, final IPath destination) {
super();
this.source = source;
this.destination = destination;
}
public Builder ignoreRelativeSourcePaths(final String... relativePaths) {
this.ignoredRelativePaths.addAll(Arrays.asList(relativePaths));
return this;
}
public SyncFileSystemStructureProvider build() {
return new SyncFileSystemStructureProvider(source, destination, ignoredRelativePaths);
}
}
}
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