Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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 2

 * 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, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2010 {Prodevelop}   {Task}

 */

package org.gvsig.installer.prov.plugin.execution;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import org.apache.tools.ant.Project;

import org.apache.tools.ant.ProjectHelper;

import org.gvsig.installer.lib.api.PackageInfo;

import org.gvsig.installer.lib.api.execution.InstallPackageServiceException;

import org.gvsig.installer.lib.spi.InstallPackageProviderServices;

import org.gvsig.installer.lib.spi.InstallerProviderLocator;

import org.gvsig.installer.lib.spi.InstallerProviderManager;

import org.gvsig.installer.lib.spi.execution.InstallPackageProvider;

import org.gvsig.tools.service.spi.AbstractProvider;

import org.gvsig.tools.service.spi.ProviderServices;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera Llodr&aacute;</a>

 */

public class PluginInstallerExecutionProvider extends AbstractProvider

    implements InstallPackageProvider {

    private static final String ANT_FILE_NAME = "install.xml";

    private File pluginsDirectory = null;

    private File applicationDirectory = null;

    private File decompressDir = null;

    private static final InstallerProviderManager installerProviderManager =

        InstallerProviderLocator.getProviderManager();

    public PluginInstallerExecutionProvider(ProviderServices providerServices) {

        super(providerServices);

    }

    public class InstallerPluginsDirectoryNotFoundException extends

        InstallPackageServiceException {

        private static final long serialVersionUID = 4416143986837955880L;

        private static final String message = "Plugins directory not found";

        private static final String KEY = "plugins_directory_not_found";

        public InstallerPluginsDirectoryNotFoundException() {

            super(message, KEY, serialVersionUID);

        }

    }

    public void install(File applicationDirectory, InputStream inputStream,

        PackageInfo packageInfo) throws InstallPackageServiceException {

        this.applicationDirectory = applicationDirectory;

        pluginsDirectory =

            new File(applicationDirectory + File.separator + "gvSIG"

                + File.separator + "extensiones");

        try {

            if (!pluginsDirectory.exists()) {

                throw new InstallerPluginsDirectoryNotFoundException();

            }

            InstallPackageProviderServices installerProviderServices =

                installerProviderManager.createInstallerProviderServices();

            installerProviderServices.decompress(inputStream, pluginsDirectory);

            File antFile =

                new File(pluginsDirectory + File.separator

                    + packageInfo.getCode() + File.separator + "install"

                    + File.separator + ANT_FILE_NAME);

            if (antFile.exists()) {

                executeAntFile(antFile);

            }

        } catch (Exception e) {

            try {

                // if there is an exception, installLater is called

                installLater(applicationDirectory, inputStream, packageInfo);

            } catch (IOException e1) {

                e1.printStackTrace();

                throw new InstallPackageServiceException(e1);

            }

        }

    }

    /**

     * This function will is called when an exception is produced during the

     * installation of a plugin. It will prepare the package to be installed on

     * the next gvSIG restart.

     */

    public void installLater(File applicationDirectory,

        InputStream inputStream, PackageInfo packageInfo)

        throws InstallPackageServiceException, IOException {

        this.applicationDirectory = applicationDirectory;

        File updateDirectory =

            new File(applicationDirectory + File.separator + "update");

        if (!updateDirectory.exists()) {

            updateDirectory.mkdir();

        }

        File filesDirectory =

            new File(updateDirectory + File.separator + "files");

        if (!filesDirectory.exists()) {

            filesDirectory.mkdir();

        }

        File scriptsFile =

            new File(updateDirectory + File.separator + "scripts.lst");

        decompressDir =

            new File(filesDirectory.toString() + File.separator

                + packageInfo.getCode());

        if (decompressDir.exists()) {

            deleteDir(decompressDir);

        }

        InstallPackageProviderServices installerProviderServices =

            installerProviderManager.createInstallerProviderServices();

        installerProviderServices.decompress(inputStream, filesDirectory);

        File antFile =

            new File(decompressDir + File.separator + "install"

                + File.separator + ANT_FILE_NAME);

        if (antFile.exists()) {

            if (!scriptsFile.exists()) {

                scriptsFile.createNewFile();

            }

            FileWriter writer = new FileWriter(scriptsFile, true);

            BufferedWriter out = new BufferedWriter(writer);

            String str = antFile.toString();

            out.append(str + "\n");

            out.close();

        }

    }

    private void executeAntFile(File file) {

        Project p = new Project();

        p.setUserProperty("ant.file", file.getAbsolutePath());

        p.setProperty("gvsig_dir", applicationDirectory.getAbsolutePath());

        p.setProperty("extensions_dir", pluginsDirectory.getAbsolutePath());

        p.init();

        ProjectHelper helper = ProjectHelper.getProjectHelper();

        p.addReference("ant.projectHelper", helper);

        helper.parse(p, file);

        p.executeTarget(p.getDefaultTarget());

    }

    private boolean deleteDir(File dir) {

        if (dir.isDirectory()) {

            String[] children = dir.list();

            for (int i = 0; i < children.length; i++) {

                boolean success = deleteDir(new File(dir, children[i]));

                if (!success) {

                    return false;

                }

            }

        }

        // The directory is now empty so delete it

        return dir.delete();

    }

}