baseproperties.java

用java写的ftp服务器程序

// $Id: BaseProperties.java 306756 2005-10-06 11:30:03 +0530 (Thu, 06 Oct 2005) rana_b $
/*
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.ftpserver.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import java.util.TimeZone;

import org.apache.ftpserver.ftplet.FtpException;

/**
 * This class encapsulates <code>java.util.Properties</code> to
 * add java primitives and some other java classes.
 * 
 * @author <a href="mailto:[e-mail]">Rana Bhattacharyya</a>
 */
public
class BaseProperties extends Properties {
    
    private static final long serialVersionUID = 5572645129592131953L;

    /**
     * Default constructor.
     */
    public BaseProperties()  {
    }
    
    /**
     * Load existing property.
     */
    public BaseProperties(Properties prop)  {
        super(prop);
    }
    
    /**
     * Load properties from file
     */
    public BaseProperties(File fl) throws IOException {
        FileInputStream fis = new FileInputStream(fl);
        load(fis);
        fis.close();
    }
    
    /**
     * Load properties from <code>InputStream</code>
     */
    public BaseProperties(InputStream is) throws IOException  {
        load(is);
    }
    
    
    //////////////////////////////////////////
    ////////  Properties Get Methods  ////////
    //////////////////////////////////////////
    /**
     * Get boolean value.
     */
    public boolean getBoolean(String str) throws FtpException {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        return str.toLowerCase().equals("true");
    }

    public boolean getBoolean(String str, boolean bol)  {
        try {
            return getBoolean(str);
        } catch (FtpException ex) {
            return bol;
        }
    }


    /**
     * Get integer value.
     */
    public int getInteger(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        try {
            return Integer.parseInt(str);
        } 
        catch (NumberFormatException ex) {
            throw new FtpException("BaseProperties.getInteger()", ex);
        }
    }

    public int getInteger(String str, int intVal)  {
        try {
            return getInteger(str);
        } 
        catch (FtpException ex) {
            return intVal;
        }
    }

    /**
     * Get long value.
     */
    public long getLong(String str) throws FtpException {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        try {
            return Long.parseLong(str);
        } 
        catch (NumberFormatException ex) {
            throw new FtpException("BaseProperties.getLong()", ex);
        }
    }

    public long getLong(String str, long val)  {
        try {
            return getLong(str);
        } 
        catch (FtpException ex) {
            return val;
        }
    }


    /**
     * Get double value.
     */
    public double getDouble(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        try {
            return Double.parseDouble(str); 
        } 
        catch (NumberFormatException ex) {
            throw new FtpException("BaseProperties.getDouble()", ex);
        }
    }

    public double getDouble(String str, double doubleVal)  {
        try {
            return getDouble(str);
        } 
        catch (FtpException ex) {
            return doubleVal; 
        }
    } 
    
    /**
     * Get <code>InetAddress</code>.
     */
    public InetAddress getInetAddress(String str) throws FtpException {
        str = getProperty(str);
        if(str == null) {
            throw new FtpException(str + " : not found");
        }
        
        try {
            return InetAddress.getByName(str);
        }
        catch(UnknownHostException ex) {
            throw new FtpException("Host " + str + " not found");
        }
    }
    
    public InetAddress getInetAddress(String str, InetAddress addr) {
        try {
            return getInetAddress(str);
        }
        catch(FtpException ex) {
            return addr;
        }
    }
    
    /**
     * Get <code>String</code>.
     */
    public String getString(String str) throws FtpException {
        str = getProperty(str);
        if(str == null) {
            throw new FtpException(str + " : not found");
        }
        
        return str;
    }
    
    public String getString(String str, String s) {
        try {
            return getString(str);
        }
        catch(FtpException ex) {
            return s;
        }
    }

    /**
     * Get <code>File</code> object.
     */
    public File getFile(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }
        return new File(str);
    }

    public File getFile(String str, File fl)  {
        try {
            return getFile(str);
        } 
        catch (FtpException ex) {
            return fl;
        }
    }


    /**
     * Get <code>Class</code> object
     */
    public Class getClass(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        try {
            return Class.forName(str);
        } 
        catch (ClassNotFoundException ex) {
            throw new FtpException("BaseProperties.getClass()", ex);
        }
    }

    public Class getClass(String str, Class cls)  {
        try {
            return getClass(str);
        } 
        catch (FtpException ex) {
            return cls;
        }
    } 

    /**
     * Get <code>TimeZone</code>
     */
    public TimeZone getTimeZone(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }
        return TimeZone.getTimeZone(str);
    }

    public TimeZone getTimeZone(String str, TimeZone tz)  {
        try {
            return getTimeZone(str);
        } 
        catch (FtpException ex) {
            return tz;
        }
    }

    /**
     * Get <code>DateFormat</code> object.
     */
    public SimpleDateFormat getDateFormat(String str) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str +  " : not found");
        }
        return new SimpleDateFormat(str);
    }

    public SimpleDateFormat getDateFormat(String str, SimpleDateFormat fmt)  {
        try {
            return getDateFormat(str);
        } 
        catch (FtpException ex) {
            return fmt;
        }
    }


    /**
     * Get <code>Date</code> object.
     */
    public Date getDate(String str, DateFormat fmt) throws FtpException  {
        str = getProperty(str);
        if (str == null) {
            throw new FtpException(str + " : not found");
        }

        try {
            return fmt.parse(str);
        } 
        catch (ParseException ex) {
            throw new FtpException("BaseProperties.getdate()", ex);
        }
    }

    public Date getDate(String str, DateFormat fmt, Date dt)  {
        try {
            return getDate(str, fmt);
        } 
        catch (FtpException ex) {
            return dt;
        }
    }


    //////////////////////////////////////////
    ////////  Properties Set Methods  ////////
    //////////////////////////////////////////
    /**
     * Set boolean value.
     */
    public void setProperty(String key, boolean val)  {
        setProperty(key, String.valueOf(val));
    }

    /**
     * Set integer value.
     */
    public void setProperty(String key, int val)  {
        setProperty(key, String.valueOf(val));
    }


    /**
     * Set double value.
     */
    public void setProperty(String key, double val)  {
        setProperty(key, String.valueOf(val));
    }

    /**
     * Set float value.
     */
    public void setProperty(String key, float val)  {
        setProperty(key, String.valueOf(val));
    } 

    /**
     * Set long value.
     */
    public void setProperty(String key, long val)  {
        setProperty(key, String.valueOf(val));
    }
    
    /**
     * Set <code>InetAddress</code>.
     */
    public void setInetAddress(String key, InetAddress val) {
        setProperty(key, val.getHostAddress());
    }
     
    /**
     * Set <code>File</code> object.
     */
    public void setProperty(String key, File val)  {
        setProperty(key, val.getAbsolutePath());
    }

    /**
     * Set <code>DateFormat</code> object.
     */
    public void setProperty(String key, SimpleDateFormat val) {
        setProperty(key, val.toPattern());
    }

    /**
     * Set <code>TimeZone</code> object.
     */
    public void setProperty(String key, TimeZone val)  {
        setProperty(key, val.getID());
    }

    /**
     * Set <code>Date</code> object.
     */
    public void setProperty(String key, Date val, DateFormat fmt)  {
        setProperty(key, fmt.format(val));
    }

    /**
     * Set <code>Class</code> object.
     */
    public void setProperty(String key, Class val)  {
        setProperty(key, val.getName());
    }

}