| gvSIG desktop 1

/* 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.lib.impl.creation;

import java.io.BufferedReader;

import java.io.ByteArrayInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

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

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

import org.gvsig.installer.lib.api.creation.MakePluginPackageService;

import org.gvsig.installer.lib.api.creation.MakePluginPackageServiceException;

import org.gvsig.installer.lib.impl.DefaultPackageInfo;

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

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

import org.gvsig.tools.service.Manager;

/**

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

 */

public class DefaultMakePluginPackageService implements

                MakePluginPackageService {

        private static final Logger LOG = LoggerFactory

                        .getLogger(DefaultMakePluginPackageService.class);

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

        public static final String COPIED_FILES_DIRECTORY_NAME = "files";

        private File pluginsDirectory;

        private static final Logger logger = org.slf4j.LoggerFactory

                        .getLogger(DefaultMakePluginPackageService.class);

        private final InstallerManager manager;

        private List<PackageInfo> installerInfos = null;

        private Map<PackageInfo, String> directories = null;

        protected List<File> selectedFiles = null;

        protected String antScript = null;

        private InstallPackageProviderServices installerProviderServices = null;

        public DefaultMakePluginPackageService(InstallerManager manager,

                        File pluginsDirectory)

                        throws MakePluginPackageServiceException {

                super();

                this.manager = manager;

                installerInfos = new ArrayList<PackageInfo>();

                directories = new HashMap<PackageInfo, String>();

                selectedFiles = new ArrayList<File>();

                installerProviderServices = InstallerProviderLocator

                                .getProviderManager().createInstallerProviderServices();

                initialize(pluginsDirectory);

        }

        private void initialize(File pluginsDirectory)

                        throws MakePluginPackageServiceException {

                if ((!pluginsDirectory.exists()) || (!pluginsDirectory.isDirectory())) {

                        throw new MakePluginPackageServiceException(

                                        "The plugins directory does't exists or not is a directory");

                }

                this.pluginsDirectory = pluginsDirectory;

                // Read all the installed plugins

                String[] plugins = pluginsDirectory.list();

                if (plugins != null) {

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

                                String pluginDirectoryName = plugins[i];

                                File pluginDirectoryFile = getAbsolutePluginPackageDirectory(pluginDirectoryName);

                                DefaultPackageInfo packageInfo = new DefaultPackageInfo();

                                installerProviderServices.readPackageInfo(new File(

                                                pluginDirectoryFile.getAbsolutePath()), packageInfo);

                                // Checks if the ant file exists

                                File antFile = getAntFile(pluginDirectoryFile);

                                if (antFile.exists()) {

                                        try {

                                                packageInfo.setAnScript(readFileAsString(antFile

                                                                .getAbsolutePath()));

                                        } catch (IOException e) {

                                                logger.error("Not possible to read the ant file");

                                        }

                                }

                                // Checks if there are files to copy

                                File copiedFilesDirectory = getCopiedFilesDirectory(pluginDirectoryFile);

                                if (copiedFilesDirectory.exists()) {

                                        loadCopiedFiles(copiedFilesDirectory, copiedFilesDirectory,

                                                        packageInfo);

                                }

                                installerInfos.add(packageInfo);

                                directories.put(packageInfo, pluginDirectoryName);

                        }

                }

        }

        private void loadCopiedFiles(File file, File filesDirectory,

                        PackageInfo packageInfo) throws MakePluginPackageServiceException {

                if (file.isDirectory()) {

                        File[] files = file.listFiles();

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

                                loadCopiedFiles(files[i], filesDirectory, packageInfo);

                        }

                } else {

                        // Removing the plugin prefix

                        String pluginFileName = file.getAbsolutePath().substring(

                                        filesDirectory.getAbsolutePath().length(),

                                        file.getAbsolutePath().length());

                        // Ading the root directory

                        File pluginFile = new File(pluginsDirectory.getParentFile()

                                        .getParentFile().getAbsolutePath()

                                        + pluginFileName);

                        packageInfo.addFileToCopy(pluginFile);

                }

        }

        public void createPackageSet(PackageInfo packageInfo,

                        OutputStream packageStream)

                        throws MakePluginPackageServiceException {

                LOG.debug("Creating a package set of the package info: \n{0}",

                                packageInfo);

                writeAdditionalFiles(packageInfo);

                String pluginFileName = manager.getPackageFileName(packageInfo);

                installerProviderServices.compressPackageSet(

                                getAbsolutePluginPackageDirectory(packageInfo), pluginFileName,

                                packageStream);

        }

        private void writeAdditionalFiles(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                // Write the package.info file

                writePackageInfo(packageInfo);

                if (packageInfo.getAntScript() != null) {

                        // Create the ant file

                        writeAntFile(packageInfo);

                        // Copy the selected files

                        writeSelectedFiles(packageInfo);

                }

        }

        public void createPackage(PackageInfo packageInfo,

                        OutputStream packageStream)

                        throws MakePluginPackageServiceException {

                LOG.debug("Creating package of the package info: \n{0}", packageInfo);

                writeAdditionalFiles(packageInfo);

                installerProviderServices.compressPackage(

                                getAbsolutePluginPackageDirectory(packageInfo), packageStream);

        }

    public void createPackageIndex(PackageInfo packageInfo,

        OutputStream packageStream) throws MakePluginPackageServiceException {

        LOG.debug("Creating package index of the package info: \n{0}",

            packageInfo);

        installerProviderServices.compressPackageIndex(

            getAbsolutePluginPackageDirectory(packageInfo), packageStream);

    }

        private void writePackageInfo(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                writePackageInfo(packageInfo,

                                getAbsolutePluginPackageDirectory(packageInfo));

        }

        public void writePackageInfo(PackageInfo packageInfo, File folder)

                        throws MakePluginPackageServiceException {

                installerProviderServices.writePackageInfo(folder, packageInfo);

        }

    public void writePackageInfoForIndex(PackageInfo packageInfo, File folder)

        throws MakePluginPackageServiceException {

        installerProviderServices.writePackageInfoForIndex(folder, packageInfo);

    }

        private void writeAntFile(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                try {

                        ByteArrayInputStream in = new ByteArrayInputStream(packageInfo

                                        .getAntScript().getBytes());

                        OutputStream out = new FileOutputStream(

                                        getAbsoluteAntFile(packageInfo));

                        // Copy the bits from instream to outstream

                        byte[] buf = new byte[1024];

                        int len;

                        while ((len = in.read(buf)) > 0) {

                                out.write(buf, 0, len);

                        }

                        in.close();

                        out.close();

                } catch (IOException e) {

                        throw new MakePluginPackageServiceException(

                                        "Exception writing the ant file");

                }

        }

        private void writeSelectedFiles(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                try {

                        String copiedFilesDirectoryName = getAbsoulteCopiedFilesDirectoryName(packageInfo);

                        // Deleting the previous files folder

                        File copiedFilesDirectoryfile = new File(copiedFilesDirectoryName);

                        deleteDirectory(copiedFilesDirectoryfile);

                        // It works if the plugins directory is in the folder

                        // "gvSIG/extensiones"

                        String applicationDirectory = pluginsDirectory.getParentFile()

                                        .getParent();

                        for (int i = 0; i < packageInfo.getFileToCopySize(); i++) {

                                String sourceFile = packageInfo.getFileToCopyAt(i)

                                                .getAbsolutePath();

                                // Create the final path

                                String destFile = sourceFile.substring(

                                                applicationDirectory.length(), sourceFile.length());

                                destFile = copiedFilesDirectoryName + destFile;

                                // Copy the files

                                copy(new File(sourceFile), new File(destFile));

                        }

                } catch (IOException e) {

                        throw new MakePluginPackageServiceException(

                                        "Exception copying the files");

                }

        }

        static public boolean deleteDirectory(File path) {

                if (path.exists()) {

                        File[] files = path.listFiles();

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

                                if (files[i].isDirectory()) {

                                        deleteDirectory(files[i]);

                                } else {

                                        files[i].delete();

                                }

                        }

                }

                return (path.delete());

        }

        void copy(File sourceLocation, File targetLocation) throws IOException {

                if (sourceLocation.isDirectory()) {

                        if (!targetLocation.exists()) {

                                targetLocation.mkdir();

                        }

                        String[] children = sourceLocation.list();

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

                                copy(new File(sourceLocation, children[i]), new File(

                                                targetLocation, children[i]));

                        }

                } else {

                        targetLocation.getParentFile().mkdirs();

                        InputStream in = new FileInputStream(sourceLocation);

                        OutputStream out = new FileOutputStream(targetLocation);

                        // Copy the bits from instream to outstream

                        byte[] buf = new byte[1024];

                        int len;

                        while ((len = in.read(buf)) > 0) {

                                out.write(buf, 0, len);

                        }

                        in.close();

                        out.close();

                }

        }

        private String getPluginPackageDirectory(PackageInfo packageInfo) {

                return directories.get(packageInfo);

        }

        private String getCopiedFilesDirectoryName(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                return getPluginPackageDirectory(packageInfo) + File.separator

                                + COPIED_FILES_DIRECTORY_NAME;

        }

        private File getCopiedFilesDirectory(File pluginDirectory)

                        throws MakePluginPackageServiceException {

                return new File(pluginDirectory.getAbsolutePath() + File.separator

                                + COPIED_FILES_DIRECTORY_NAME);

        }

        private String getAbsoulteCopiedFilesDirectoryName(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                return getAbsolutePluginPackageDirectory(packageInfo).getAbsolutePath()

                                + File.separator + COPIED_FILES_DIRECTORY_NAME;

        }

        private String getAntFileName(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                return getPluginPackageDirectory(packageInfo) + File.separator

                                + ANT_FILE_NAME;

        }

        private File getAntFile(File pluginDirectory)

                        throws MakePluginPackageServiceException {

                return new File(pluginDirectory.getAbsolutePath() + File.separator

                                + ANT_FILE_NAME);

        }

        private File getAbsoluteAntFile(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                return new File(pluginsDirectory.getAbsolutePath() + File.separator

                                + getAntFileName(packageInfo));

        }

        private File getAbsolutePluginPackageDirectory(PackageInfo packageInfo)

                        throws MakePluginPackageServiceException {

                return new File(pluginsDirectory.getAbsolutePath() + File.separator

                                + getPluginPackageDirectory(packageInfo));

        }

        private File getAbsolutePluginPackageDirectory(String pluginDirectory)

                        throws MakePluginPackageServiceException {

                return new File(pluginsDirectory.getAbsolutePath() + File.separator

                                + pluginDirectory);

        }

        public Manager getManager() {

                return this.manager;

        }

        public PackageInfo getPluginPackageInfo(int index) {

                if (index >= installerInfos.size()) {

                        return null;

                }

                return installerInfos.get(index);

        }

        public PackageInfo getPluginPackageInfo(String code) {

                for (int i = 0; i < getPluginPackageCount(); i++) {

                        if (installerInfos.get(i).getCode() != null

                                        && installerInfos.get(i).getCode().equals(code)) {

                                return installerInfos.get(i);

                        }

                }

                PackageInfo info = new DefaultPackageInfo();

                info.setCode(code);

                return info;

        }

        public int getPluginPackageCount() {

                return installerInfos.size();

        }

        public String getDefaultAntScript()

                        throws MakePluginPackageServiceException {

                try {

                        return readFileAsString(getClass().getClassLoader()

                                        .getResource(ANT_FILE_NAME).getFile());

                } catch (IOException e) {

                        throw new MakePluginPackageServiceException(

                                        "Impossible to read the default ant file", e);

                }

        }

        private String readFileAsString(String filePath) throws java.io.IOException {

                StringBuffer fileData = new StringBuffer(1000);

                BufferedReader reader = new BufferedReader(new FileReader(filePath));

                char[] buf = new char[1024];

                int numRead = 0;

                while ((numRead = reader.read(buf)) != -1) {

                        String readData = String.valueOf(buf, 0, numRead);

                        fileData.append(readData);

                        buf = new char[1024];

                }

                reader.close();

                return fileData.toString();

        }

        public File getPluginsDirectory() {

                return pluginsDirectory;

        }

        public PackageInfo[] getInstalledPackages()

                        throws MakePluginPackageServiceException {

                return installerInfos.toArray(new PackageInfo[installerInfos.size()]);

        }

    public File getPluginFolder(PackageInfo packageInfo)

        throws MakePluginPackageServiceException {

        return getAbsolutePluginPackageDirectory(packageInfo);

    }

}