de.blizzy.backup.BackupPlugin.java Source code

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Here is the source code for de.blizzy.backup.BackupPlugin.java

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/*
blizzy's Backup - Easy to use personal file backup application
Copyright (C) 2011-2012 Maik Schreiber
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package de.blizzy.backup;

import java.io.IOException;
import java.io.InputStream;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import de.blizzy.backup.vfs.ILocationProvider;
import de.blizzy.backup.vfs.LocationProviderDescriptor;
import de.blizzy.backup.vfs.filesystem.FileSystemLocationProvider;

public class BackupPlugin extends AbstractUIPlugin {
    public static final String ID = "de.blizzy.backup"; //$NON-NLS-1$
    public static final String VERSION = "1.5.5"; //$NON-NLS-1$
    public static final String COPYRIGHT_YEARS = "2011-2012"; //$NON-NLS-1$

    public static final int KEEP_HOURLIES_DAYS = 7;
    public static final int KEEP_DAILIES_DAYS = 30;

    private static final String ARG_HIDDEN = "-hidden"; //$NON-NLS-1$
    private static final String ARG_CHECK_GUI = "-checkGui"; //$NON-NLS-1$

    private static BackupPlugin instance;

    public BackupPlugin() {
        instance = this;
    }

    public static BackupPlugin getDefault() {
        return instance;
    }

    boolean isHidden() {
        return Boolean
                .parseBoolean(StringUtils.defaultString(getApplicationArg(ARG_HIDDEN), Boolean.FALSE.toString()));
    }

    boolean isCheckGui() {
        return Boolean.parseBoolean(
                StringUtils.defaultString(getApplicationArg(ARG_CHECK_GUI), Boolean.FALSE.toString()));
    }

    private String getApplicationArg(String argName) {
        String[] args = Platform.getApplicationArgs();
        for (String arg : args) {
            if (arg.equals(argName)) {
                return StringUtils.EMPTY;
            }
            if (arg.startsWith(argName + "=")) { //$NON-NLS-1$
                return arg.substring(argName.length() + 1);
            }
        }
        return null;
    }

    public void logMessage(String msg) {
        getLog().log(new Status(IStatus.INFO, ID, msg));
    }

    public void logError(String msg, Throwable t) {
        getLog().log(new Status(IStatus.ERROR, ID, msg, t));
    }

    public ImageDescriptor getImageDescriptor(String path) {
        return AbstractUIPlugin.imageDescriptorFromPlugin(ID, path);
    }

    InputStream openBundleFile(String path) throws IOException {
        return getBundle().getEntry(path).openStream();
    }

    public List<LocationProviderDescriptor> getLocationProviders() {
        List<LocationProviderDescriptor> result = new ArrayList<>();
        IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(ID + ".locationProviders"); //$NON-NLS-1$
        IExtension[] extensions = point.getExtensions();
        for (IExtension extension : extensions) {
            for (IConfigurationElement element : extension.getConfigurationElements()) {
                try {
                    String name = element.getAttribute("name"); //$NON-NLS-1$
                    ILocationProvider locationProvider = (ILocationProvider) element
                            .createExecutableExtension("class"); //$NON-NLS-1$
                    result.add(new LocationProviderDescriptor(name, locationProvider));
                } catch (CoreException e) {
                    logError("error while creating location provider", e); //$NON-NLS-1$
                }
            }
        }
        Collections.sort(result, new Comparator<LocationProviderDescriptor>() {
            @Override
            public int compare(LocationProviderDescriptor d1, LocationProviderDescriptor d2) {
                if (d1.getLocationProvider() instanceof FileSystemLocationProvider) {
                    return -1;
                }
                if (d2.getLocationProvider() instanceof FileSystemLocationProvider) {
                    return 1;
                }
                return Collator.getInstance().compare(d1.getName(), d2.getName());
            }
        });
        return result;
    }

    public List<StorageInterceptorDescriptor> getStorageInterceptors() {
        List<StorageInterceptorDescriptor> result = new ArrayList<>();
        IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint(ID + ".storageInterceptors"); //$NON-NLS-1$
        IExtension[] extensions = point.getExtensions();
        for (IExtension extension : extensions) {
            for (IConfigurationElement element : extension.getConfigurationElements()) {
                try {
                    String id = extension.getUniqueIdentifier();
                    String name = element.getAttribute("name"); //$NON-NLS-1$
                    IStorageInterceptor storageInterceptor = (IStorageInterceptor) element
                            .createExecutableExtension("class"); //$NON-NLS-1$
                    result.add(new StorageInterceptorDescriptor(id, name, storageInterceptor));
                } catch (CoreException e) {
                    logError("error while creating storage interceptor", e); //$NON-NLS-1$
                }
            }
        }
        Collections.sort(result, new Comparator<StorageInterceptorDescriptor>() {
            @Override
            public int compare(StorageInterceptorDescriptor d1, StorageInterceptorDescriptor d2) {
                return Collator.getInstance().compare(d1.getName(), d2.getName());
            }
        });
        return result;
    }
}