Retreive Binary File From Jar : Jar File « File Input Output « Java

1. Java
2. File Input Output
3. Jar File

Retreive Binary File From Jar

    
/*
 * Copyright 2006 - 2008 Georges Stephan
 * 
 * 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.
 */

import java.util.logging.*;

import java.io.*;

/**
 * 
 * @author Georges Stephan
 */

public class Util {
  private static Logger logger = Logger.getLogger(Util.class.getName());
    
  public static String validateString(String aString) {
    if(aString==null) return("");
    
    aString=aString.replace('\'', ' ');
    aString=aString.trim();
    return(aString);
  }
    
  public static String removeNonDigits(String aString) {
    StringBuffer newString = new StringBuffer();
    for(int x=0;x<aString.length();x++) {
      if(Character.isDigit(aString.charAt(x))) newString.append(aString.charAt(x));
    }
    return(newString.toString());
  }
    
  public static void createHome() throws Exception {
    File ch = new File(System.getProperty("user.home")+File.separator+".dataform");
    if(!ch.exists()) {
      if(!ch.mkdir()) throw new Exception("Failed to create the dataform configuration directory");
    }
  }
    
  public static String getHomeDir() {
    return(System.getProperty("user.home")+File.separator+".dataform"+File.separator);
  } 
    
  public static boolean retreiveTextFileFromJar(String resourceName,String targetDirectory) throws Exception {
    boolean found=false;
    if(resourceName!=null) {
      InputStream is = Util.class.getResourceAsStream(resourceName);
      if(is==null) logger.log(Level.WARNING,"The resource '"+resourceName+"' was not found.");
      BufferedReader br = new BufferedReader(new InputStreamReader(is));
      String line;
      String lineSep = System.getProperty("line.separator");
      StringBuffer sb = new StringBuffer();
      while ((line = br.readLine()) != null) {
        sb.append(line);
        sb.append(lineSep);
      }
      is.close();
      if(sb!=null) {
        if(sb.length()>0) {
          FileWriter temp = new FileWriter(targetDirectory+File.separator+resourceName);
          temp.write(sb.toString());
          temp.close();
          found=true;
        }
      }
    }
    return(found);    
  }
  
  public static boolean retreiveBinaryFileFromJar(String resourceName,String targetDirectory,Object resource) throws Exception {
    boolean found=false;
    if(resourceName!=null) {
      InputStream is = resource.getClass().getResourceAsStream(resourceName);
      if(is==null) throw new Exception ("Resource "+resourceName+" was not found.");
      BufferedReader br = new BufferedReader(new InputStreamReader(is));
      FileOutputStream fos = new FileOutputStream(targetDirectory+File.separator+resourceName.substring(resourceName.lastIndexOf('/'),resourceName.length()));
      byte[] buffer = new byte[1024];
            int bytesRead;
            
            while ((bytesRead = is.read(buffer)) != -1) {
                fos.write(buffer, 0, bytesRead);
            }
            fos.flush();
            br.close();
            is.close();
      found=true;
    } else {
      found=false;
    }
    return found;
  }

}

   
    
    
    
  

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