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/*
* Copyright (c) 2014, 2017 Eike Stepper (Loehne, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.oomph.gitbash;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.mylyn.tasks.core.ITaskAttachment;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.actions.BaseSelectionListenerAction;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* @author Eike Stepper
*/
public class GitApplyAction extends BaseSelectionListenerAction implements IObjectActionDelegate, IMenuCreator
{
private IWorkbenchPart targetPart;
private ISelection currentSelection;
private Menu dropDownMenu;
public GitApplyAction()
{
super("Adjust and Apply Patch");
}
protected GitApplyAction(String text)
{
super(text);
}
public void setActivePart(IAction action, IWorkbenchPart targetPart)
{
this.targetPart = targetPart;
}
public void run(IAction action)
{
action.setMenuCreator(this);
}
public void selectionChanged(IAction action, ISelection selection)
{
action.setMenuCreator(this);
currentSelection = selection;
}
private ITaskAttachment getSelectedAttachment()
{
if (currentSelection instanceof StructuredSelection)
{
Object object = ((StructuredSelection)currentSelection).getFirstElement();
if (object instanceof ITaskAttachment)
{
return (ITaskAttachment)object;
}
}
return null;
}
public void dispose()
{
if (dropDownMenu != null)
{
dropDownMenu.dispose();
dropDownMenu = null;
}
}
public Menu getMenu(Control parent)
{
dispose();
dropDownMenu = new Menu(parent);
addActionsToMenu();
return dropDownMenu;
}
public Menu getMenu(Menu parent)
{
dispose();
dropDownMenu = new Menu(parent);
addActionsToMenu();
return dropDownMenu;
}
private void addActionsToMenu()
{
ITaskAttachment attachment = getSelectedAttachment();
if (attachment == null)
{
return;
}
Repository[] repositories = getRepositories();
List<Repository> sorted = Arrays.asList(repositories);
Collections.sort(sorted, new Comparator<Repository>()
{
public int compare(Repository r1, Repository r2)
{
String n1 = r1.getWorkTree().getName();
String n2 = r2.getWorkTree().getName();
return n1.compareTo(n2);
}
});
for (Repository repository : sorted)
{
RepositorySelectionAction action = new RepositorySelectionAction(attachment, repository);
ActionContributionItem item = new ActionContributionItem(action);
item.fill(dropDownMenu, -1);
}
}
@SuppressWarnings("all")
private Repository[] getRepositories()
{
return org.eclipse.egit.core.Activator.getDefault().getRepositoryCache().getAllRepositories();
}
/**
* @author Eike Stepper
*/
private class RepositorySelectionAction extends Action
{
private final ITaskAttachment attachment;
private final Repository repository;
public RepositorySelectionAction(ITaskAttachment attachment, Repository repository)
{
this.attachment = attachment;
this.repository = repository;
setText(repository.getWorkTree().getName());
setImageDescriptor(Activator.getImageDescriptor("icons/repository.gif"));
}
@Override
@SuppressWarnings({ "restriction", "deprecation" })
public void run()
{
try
{
IStorage storage = org.eclipse.mylyn.internal.tasks.ui.editors.TaskAttachmentStorage.create(attachment);
File file = savePatch(storage);
applyPatch(file);
}
catch (Exception ex)
{
Activator.log(ex);
}
}
private File savePatch(IStorage storage) throws CoreException
{
InputStream in = null;
BufferedWriter writer = null;
try
{
File tempFile = File.createTempFile("~attachment-", ".patch");
writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(tempFile)));
in = storage.getContents();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = reader.readLine()) != null)
{
writer.write(line);
writer.write("\n");
}
return tempFile;
}
catch (CoreException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Problem while saving patch", ex));
}
finally
{
if (in != null)
{
try
{
in.close();
}
catch (Exception ex)
{
}
}
if (writer != null)
{
try
{
writer.close();
}
catch (Exception ex)
{
}
}
}
}
protected void applyPatch(File file)
{
if (repository != null)
{
Shell shell = targetPart.getSite().getShell();
File workTree = repository.getWorkTree();
String command = "git apply " + file.getAbsolutePath().replace('\\', '/');
GitBash.executeCommand(shell, workTree, command);
}
}
}
}
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