bytestore.java

java 开发的一个电子邮局,挺实用的

/* CVS ID: $Id: ByteStore.java,v 1.4 2000/09/13 10:35:03 wastl Exp $ */
package net.wastl.webmail.misc;

import java.io.*;

import net.wastl.webmail.server.*;

/*
 * ByteStore.java
 *
 *
 * Created: Sun Sep 19 17:22:13 1999
 *
 * Copyright (C) 1999-2000 Sebastian Schaffert
 * 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
/**
 *
 * @author Sebastian Schaffert
 * @version
 */
public class ByteStore implements Serializable {
	
    byte[] bytes;
	
    String content_type=null;
    String content_encoding=null;
    String name;
    String description="";
	
    public ByteStore(byte[] b) {
		bytes=b;
    }
    
    public void setDescription(String s) {
	description=s;
    }

    public String getDescription() {
	return description;
    }

    public void setContentType(String s) {
		content_type=s;
    }
    
    public String getContentType() {
		if(content_type != null) {
			return content_type;
		} else {
			content_type=WebMailServer.getStorage().getMimeType(name);
			return content_type;
		}
    }
    
    public void setContentEncoding(String s) {
		content_encoding=s;
    }
    
    public String getContentEncoding() {
		return content_encoding;
    }
    
    public byte[] getBytes() {
		return bytes;
    }
    
    public void setName(String s) {
		name=s;
    }
    
    public String getName() {
		return name;
    }
    
    public int getSize() {
		return bytes.length;
    }
	
	
    /**
	* Create a ByteStore out of an InputStream
	*/
    public static ByteStore getBinaryFromIS(InputStream in, int nr_bytes_to_read) {
		byte[] s=new byte[nr_bytes_to_read+100];
		int count=0;
		int lastread=0;
		// System.err.print("Reading ... ");
		if(in != null) {
			synchronized(in) {
				while(count < s.length) {
					try {
						lastread=in.read(s,count,nr_bytes_to_read-count);
					} catch(EOFException ex) {
						System.err.println(ex.getMessage());
						lastread=0;
					} catch(Exception z) {
						System.err.println(z.getMessage());
						lastread=0;
					}
					count+=lastread;
					// System.err.print(lastread+" ");
					if(lastread < 1) break;
				}
			}
			// System.err.println();
			byte[] s2=new byte[count+1];
			for(int i=0; i<count+1;i++) {
				s2[i]=s[i];
			}
			//System.err.println("new byte-array, size "+s2.length);
			ByteStore d=new ByteStore(s2);
			return d;
		} else {
			return null;
		}
    }
} // ByteStore