source: AE/installer2/src/net/oni2/aeinstaller/backend/Settings.java@ 591

package net.oni2.aeinstaller.backend;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.HashMap;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.StaxDriver;

/**
 * Manages and stores programm settings
 * 
 * @author Christian Illy
 */
public class Settings implements Serializable {

        private static final long serialVersionUID = 8067725289301601179L;

        /**
         * @author Christian Illy
         */
        public enum Platform {
                /**
                 * Running Windows
                 */
                WIN,
                /**
                 * Running MacOS
                 */
                MACOS,
                /**
                 * Running a Linux
                 */
                LINUX,
                /**
                 * Unknown OS
                 */
                UNKNOWN
        }

        private static Settings instance = new Settings();

        private static boolean debugRun = false;

        private HashMap<String, Object> prefs = new HashMap<String, Object>();

        private boolean printNamesNotInMap = false;

        /**
         * Get the singleton instance
         * 
         * @return Singleton instance
         */
        public static Settings getInstance() {
                return instance;
        }

        /**
         * @param debug
         *            Debug mode
         */
        public static void setDebug(boolean debug) {
                debugRun = debug;
        }

        /**
         * @return Is debug run
         */
        public static boolean getDebug() {
                return debugRun;
        }

        /**
         * @return The operating system running on
         */
        public static Platform getPlatform() {
                String os = System.getProperty("os.name").toLowerCase();
                if (os.startsWith("win"))
                        return Platform.WIN;
                if (os.startsWith("linux"))
                        return Platform.LINUX;
                if (os.startsWith("mac"))
                        return Platform.MACOS;
                return Platform.UNKNOWN;
        }

        /**
         * Get the Jar path
         * 
         * @return Path
         */
        public static String getJarPath() {
                String jarPath = Settings.class.getProtectionDomain().getCodeSource()
                                .getLocation().getPath();
                String decodedPath = null;
                try {
                        decodedPath = URLDecoder.decode(jarPath, "UTF-8");
                } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                }
                return new File(decodedPath).getParentFile().getPath() + "/";
        }

        /**
         * Get the preferences path
         * 
         * @return Path
         */
        public static String getPrefsPath() {
                return getJarPath();
        }

        /**
         * Get the path to store downloaded files
         * 
         * @return Download path
         */
        public static String getDownloadPath() {
                return getTempPath() + "oni_aei/";
        }

        /**
         * Get the path to store game information data
         * 
         * @return Data path
         */
        public static String getDataPath() {
                return getJarPath() + "mods/";
        }

        /**
         * Get the systems temp-path
         * 
         * @return Path
         */
        public static String getTempPath() {
                return new File(System.getProperty("java.io.tmpdir")).getPath() + "/";
        }

        /**
         * @return Mod Depot cache filename
         */
        public static String getDepotCacheFilename() {
                return Settings.getPrefsPath() + "ModDepotCache.xml";
        }

        private static String getSettingsFilename() {
                return Settings.getPrefsPath() + "AEI-Settings.xml";
        }

        private static XStream getXStream() {
                XStream xs = new XStream(new StaxDriver());
                xs.alias("Settings", Settings.class);
                return xs;
        }

        /**
         * Serializes the settings to disk
         */
        public void serializeToFile() {
                try {
                        FileOutputStream fos = new FileOutputStream(getSettingsFilename());
                        XStream xs = getXStream();
                        xs.toXML(this, fos);
                        fos.close();
                } catch (FileNotFoundException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }

        /**
         * Deserializes the settings from disk
         */
        public static void deserializeFromFile() {
                try {
                        FileInputStream fis = new FileInputStream(getSettingsFilename());
                        XStream xs = getXStream();
                        Object obj = xs.fromXML(fis);
                        if (obj instanceof Settings)
                                instance = (Settings) obj;
                        fis.close();
                } catch (FileNotFoundException e) {
                } catch (IOException e) {
                }
        }

        /**
         * Put a string value
         * 
         * @param key
         *            Key for value
         * @param value
         *            Value
         */
        public void put(String key, String value) {
                prefs.put(key, value);
        }

        /**
         * Put a boolean value
         * 
         * @param key
         *            Key for value
         * @param value
         *            Value
         */
        public void put(String key, boolean value) {
                prefs.put(key, value);
        }

        /**
         * Put a int value
         * 
         * @param key
         *            Key for value
         * @param value
         *            Value
         */
        public void put(String key, int value) {
                prefs.put(key, value);
        }

        /**
         * Get a string value
         * 
         * @param key
         *            Key for value
         * @param def
         *            Default return value if key does not exist
         * @return Value
         */
        public String get(String key, String def) {
                if (prefs.containsKey(key)) {
                        if (prefs.get(key) instanceof String)
                                return (String) (prefs.get(key));
                }
                if (printNamesNotInMap)
                        System.out.println("Settings: Key \"" + key
                                        + "\" not in Map, defaulting to \"" + def + "\".");
                return def;
        }

        /**
         * Get a boolean value
         * 
         * @param key
         *            Key for value
         * @param def
         *            Default return value if key does not exist
         * @return Value
         */
        public Boolean get(String key, Boolean def) {
                if (prefs.containsKey(key)) {
                        if (prefs.get(key) instanceof Boolean)
                                return (Boolean) (prefs.get(key));
                }
                if (printNamesNotInMap)
                        System.out.println("Settings: Key \"" + key
                                        + "\" not in Map, defaulting to \"" + def + "\".");
                return def;
        }

        /**
         * Get a int value
         * 
         * @param key
         *            Key for value
         * @param def
         *            Default return value if key does not exist
         * @return Value
         */
        public int get(String key, int def) {
                if (prefs.containsKey(key)) {
                        if (prefs.get(key) instanceof Integer)
                                return (Integer) (prefs.get(key));
                }
                if (printNamesNotInMap)
                        System.out.println("Settings: Key \"" + key
                                        + "\" not in Map, defaulting to \"" + def + "\".");
                return def;
        }

        /**
         * Remove a value
         * 
         * @param key
         *            Key to value to remove
         */
        public void removeValue(String key) {
                prefs.remove(key);
        }

}