Application: gvSIG desktop

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * MA 02110-1301, USA.

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

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

        implements InstallPackageProvider {

    private static Logger logger = LoggerFactory.getLogger(PluginInstallerExecutionProvider.class);

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

    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 {

        InstallerProviderManager installerProviderManager = InstallerProviderLocator.getProviderManager();

        InstallerManager installerManager = InstallerLocator.getInstallerManager();

        File pluginsDirectory = installerManager.getDefaultLocalAddonRepository(

                "plugin", 

                InstallerManager.ACCESS_WRITE

        );

        logger.info("Installing package '" + packageInfo.getCode() + "' in '" + pluginsDirectory + "'.");

        try {

            if ( !pluginsDirectory.exists() ) {

                logger.warn("Can install package '" + packageInfo.getCode() + "', install folder '" + pluginsDirectory + "' does not 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(applicationDirectory, pluginsDirectory, antFile);

            }

        } catch (Exception e) {

            try {

                logger.warn("Can install package '" + packageInfo.getCode() + "'.", e);

                // if there is an exception, installLater is called

                installLater(applicationDirectory, inputStream, packageInfo);

            } catch (IOException e1) {

                logger.warn("Can install package '" + packageInfo.getCode() + "'.", e1);

                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 {

        InstallerProviderManager installerProviderManager = InstallerProviderLocator.getProviderManager();

        File decompressDir = null;

        logger.info("Delayed the package installation (" + packageInfo.getCode() + ").");

        File updateDirectory = new File(applicationDirectory + File.separator

                + "update");

        if ( !updateDirectory.exists() ) {

            forceMkdir(updateDirectory);

        }

        File filesDirectory = new File(updateDirectory + File.separator

                + "files");

        if ( !filesDirectory.exists() ) {

            forceMkdir(filesDirectory);

        }

        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() ) {

                forceMkdir(scriptsFile);

                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 forceMkdir(File file) throws IOException {

        if ( file.isDirectory() ) {

            org.apache.commons.io.FileUtils.forceMkdir(file);

        } else {

            org.apache.commons.io.FileUtils.forceMkdir(file.getParentFile());

        }

    }

    private void executeAntFile(File applicationDirectory, File pluginsDirectory, File file) {

        logger.info("Running install script '" + file.getAbsolutePath() + "'.");

        try {

            Project p = new Project();

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

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

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

            p.setBaseDir(file.getParentFile());

            p.addTaskDefinition("antform", AntForm.class);

            p.addTaskDefinition("antmenu", AntMenu.class);

            p.init();

            ProjectHelper helper = ProjectHelper.getProjectHelper();

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

            helper.parse(p, file);

            p.executeTarget(p.getDefaultTarget());

        } catch (Exception ex) {

            logger.warn("Problems executing installation script.", ex);

        }

    }

    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();

    }