RunRpmlintAction.java

/*******************************************************************************
 * Copyright (c) 2009, 2016 Red Hat, Inc.
 * 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:
 *     Red Hat - initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.internal.rpm.rpmlint.actions;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.linuxtools.internal.rpm.rpmlint.Activator;
import org.eclipse.linuxtools.internal.rpm.rpmlint.RpmlintLog;
import org.eclipse.linuxtools.internal.rpm.rpmlint.preferences.PreferenceConstants;
import org.eclipse.linuxtools.rpm.core.utils.Utils;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IURIEditorInput;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.console.ConsolePlugin;
import org.eclipse.ui.console.IConsole;
import org.eclipse.ui.console.IConsoleManager;
import org.eclipse.ui.console.MessageConsole;
import org.eclipse.ui.console.MessageConsoleStream;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.preferences.ScopedPreferenceStore;

/**
 * Manually invoke rpmlint action, which prints the output of rpmlint execution to the console.
 */
public class RunRpmlintAction extends AbstractHandler{
    /**
     * @param event The execution event.
     * @return Nothing.
     */
    @Override
    public Object execute(ExecutionEvent event)  {
        ISelection selection = HandlerUtil.getCurrentSelection(event);
        if (selection instanceof IStructuredSelection) {
            for (Object element : ((IStructuredSelection) selection).toList()) {
                IFile rpmFile = null;
                if (element instanceof IFile) {
                    rpmFile = (IFile) element;
                } else if (element instanceof IAdaptable) {
                    rpmFile = (IFile) ((IAdaptable) element)
                            .getAdapter(IFile.class);
                }
                if (rpmFile != null) {
                    runRpmlint(rpmFile.getLocation().toString());
                }
            }
        } else {
            IEditorPart editor = HandlerUtil.getActiveEditor(event);
            if (editor != null) {
                IEditorInput editorInput = editor.getEditorInput();
                if (editorInput instanceof IFileEditorInput) {
                    runRpmlint(((IFileEditorInput) editorInput).getFile().getLocation().toString());
                } else if (editorInput instanceof IURIEditorInput) {
                    runRpmlint(((IURIEditorInput) editorInput).getURI().getPath());
                }
            }
        }
        return null;

    }

    private static void runRpmlint(String location) {
        String rpmlintPath = new ScopedPreferenceStore(InstanceScope.INSTANCE,Activator.PLUGIN_ID).getString(
                PreferenceConstants.P_RPMLINT_PATH);
        try {
            if (Files.exists(Paths.get(rpmlintPath))) {
                String output = Utils.runCommandToString(rpmlintPath,
                        "-i", location); //$NON-NLS-1$
                MessageConsole myConsole = findConsole(Messages.RunRpmlintAction_0);
                MessageConsoleStream out = myConsole
                        .newMessageStream();
                myConsole.clearConsole();
                myConsole.activate();
                out.println(output);
            } else {
                IStatus warning = new Status(
                        IStatus.WARNING,
                        Activator.PLUGIN_ID,
                        1,
                        Messages.RunRpmlintAction_1,
                        null);
                ErrorDialog.openError(PlatformUI.getWorkbench()
                        .getActiveWorkbenchWindow().getShell(),
                        Messages.RunRpmlintAction_2,
                        null, warning);
            }
        } catch (IOException e) {
            // FIXME: rpmlint is not installed in the default place
            // -> ask user to open the prefs page.
            RpmlintLog.logError(e);
        }
    }

    private static MessageConsole findConsole(String name) {
        ConsolePlugin plugin = ConsolePlugin.getDefault();
        IConsoleManager conMan = plugin.getConsoleManager();
        IConsole[] existing = conMan.getConsoles();
        for (int i = 0; i < existing.length; i++) {
            if (name.equals(existing[i].getName())) {
                return (MessageConsole) existing[i];
            }
        }
        // no console found, so create a new one
        MessageConsole myConsole = new MessageConsole(name, null);
        conMan.addConsoles(new IConsole[] { myConsole });
        return myConsole;
    }
}