113 lines
3.0 KiB
Java
113 lines
3.0 KiB
Java
//This file is part of SECONDO.
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//Copyright (C) 2004, University in Hagen, Department of Computer Science,
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//Database Systems for New Applications.
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//SECONDO is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//SECONDO is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//You should have received a copy of the GNU General Public License
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//along with SECONDO; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package viewer.hoese.algebras;
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import sj.lang.ListExpr;
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import viewer.*;
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import viewer.hoese.*;
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import java.io.*;
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import tools.Reporter;
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import tools.Base64Decoder;
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/**
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* A displayclass for the string-type, alphanumeric only
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*/
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public class Dsplbinfile extends DsplGeneric implements Writable{
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boolean defined;
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ListExpr theList;
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String entry="";
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/**
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* This method is used to analyse the type and value in NestedList format and build
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* up the intern datastructures for this type. An alphanumeric representation is
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* neccessary for the displaying this type in the queryresultlist.
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*/
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public void init (String Name, int nameWidth, int indent,
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ListExpr type, ListExpr value,
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QueryResult qr)
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{
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String T = Name;
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int size = 0;
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byte[] dummy = new byte[128];
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int r;
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String V="";
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if(isUndefined(value)){
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V = "undefined";
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defined=false;
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} else{
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defined=true;
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try{
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BufferedInputStream in = new BufferedInputStream(value.decodeText());
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while( (r=in.read(dummy))>=0){
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size += r;
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}
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in.close();
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V = ""+size+" bytes";
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}catch(Exception e){
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Reporter.debug(e);
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V = "error";
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defined=false;
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}
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}
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T=extendString(T,nameWidth, indent);
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entry =T+" : " + V;
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if(!defined){
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qr.addEntry(entry);
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} else {
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theList=value;
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qr.addEntry(this);
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}
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return;
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}
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public String toString(){
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return entry;
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}
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/** implementing the writable interface **/
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public boolean writeTo(File f){
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try{
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byte[] data = Base64Decoder.decode(theList.textValue());
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if(data==null){
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Reporter.debug("cannot decode base64 encoded binary file content");
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return false;
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}
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BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f));
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out.write(data);
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out.flush();
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out.close();
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data=null;
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return true;
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}catch(Exception e){
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Reporter.debug(e);
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return false;
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}
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}
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}
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