gvSIG projects pool

package org.gvsig.jvmpreferences.nativeprefs;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.lang.management.ManagementFactory;

import java.text.SimpleDateFormat;

import java.util.Date;

import javax.management.AttributeNotFoundException;

import javax.management.InstanceNotFoundException;

import javax.management.MBeanException;

import javax.management.MBeanServer;

import javax.management.MalformedObjectNameException;

import javax.management.ObjectName;

import javax.management.ReflectionException;

import org.gvsig.andami.Launcher;

import org.gvsig.i18n.Messages;

import org.gvsig.jvmpreferences.nativeprefs.BaseMemoryPreferences;

import org.gvsig.utils.DateTime;

import org.slf4j.LoggerFactory;

/**

 * This class abstracts the complexity of reading/storing

 * memory preferences for different operating systems.

 * Windows implementation

 * 

 * @author Cesar Martinez Izquierdo

 *

 */

public class MemoryPreferencesWindows extends BaseMemoryPreferences {

        public static final String CONFIG_FILE_WINDOWS="gvsig-desktop.l4j.ini"; 

        private File configFile;

        public MemoryPreferencesWindows() {

                super();

                configFile = new File(Launcher.getApplicationDirectory() + File.separator + CONFIG_FILE_WINDOWS);

        }

        public File getConfigFile() {

                return configFile;

        }

        /* (non-Javadoc)

         * @see org.gvsig.preferences.nativeprefs.general.memory.MemoryPreferences#isConfigWritable()

         */

        public boolean isConfigWritable(){

                // We can't use getConfigFile().canWrite() because the file

                // is writable *at file system level* (so this method returns true),

                // but writing fails as the user has no effective permissions (on Win7)

                try {

                        File f = getConfigFile();

                        File test = new File(f.getAbsolutePath()+".test");

                        if (f.renameTo(test) && test.renameTo(f)) {

                                return true;

                        }

                }

                catch (Exception ex) {

                }

                return false;

        }

        @Override

        protected String getMaxMemoryRegexp() {

                return "\\s*#?\\s*-Xmx(\\d+)([mMkKgG]?)\\s*";

        }

        @Override

        protected String getEncodedMaxMemoryLine(int maximumMemory) {

                return " -Xmx"+maximumMemory+"m";

        }

}