Directory Walker : Directory « File Input Output « Java

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Java » File Input Output » DirectoryScreenshots 
Directory Walker
     


/**
 * Title:        NoUnit - Identify Classes that are not being unit Tested
 *
 * Copyright (C) 2001  Paul Browne , FirstPartners.net
 *
 *
 * 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 Paul Browne
 @version 0.6
 */

import java.io.*;
import java.util.*;


/**
 * 'Walks' the directory structure and returns files found (including those in sub folders)
 */
public class DirectoryWalker {

    /**
     * Get all the files in the starting directory (and sub dirs)
     * No filter
     @param startingDirectory
     @return filesFound (as HashSet)
     @exception java.io.IOException
     */
    public static HashSet getFiles(String startingDirectory)
        throws java.io.IOException {
        
       return getFiles(startingDirectory,null);
    }
  
   /**
     * Get all the files in the starting directory (but NOT sub dirs)
     * returns only files ending this the filename
     @param startingDirectory
     @return filesFound (as HashSet)
     @exception java.io.IOException
     */
    public static HashSet getFiles(String startingDirectory,String endFileName)
        throws java.io.IOException{
        
        //Local Variables
        String tmpFullFile;
        File startDir = new File(startingDirectory);
        File tmpFile;
        String[] thisDirContents;
        HashSet filesFound = new HashSet();
        
        //Check that this is a valid directory
        if (!startDir.isDirectory()) {
            throw new java.io.IOException(startingDirectory+" was not a valid directory");
        }
        
        //Get the contents of the current directory
        thisDirContents = startDir.list();
        
            if (thisDirContents!=null) {
            //Now loop through , apply filter , or adding them to list of sub dirs
            for (int a=0; a<thisDirContents.length;a++) {

              //Get Handle to (full) file (inc path)  
              tmpFullFile=FileUtil.combineFileAndDirectory(thisDirContents[a]
                                                                    startingDirectory);

              tmpFile = new File(tmpFullFile);

                //Add to Output if file
                if (tmpFile.isFile()) {
                    //Add if file 
                    if ((endFileName==null)||
                        (tmpFullFile.endsWith(endFileName))){
                              filesFound.add(tmpFullFile);
                    }
                }
            }
         }
            
        return filesFound;
        
    }
    
    /**
     * Get all the Directories in the starting directory (and sub dirs)
     * returns only files ending this the filename
     @param startingDirectory
     @return filesFound (as HashSet)
     @exception java.io.IOException
     */
    public static HashSet getDirs(String startingDirectory)
        throws java.io.IOException{
        
        //Local Variables
        String tmpFullFile;
        String tmpSubDir;
        File startDir = new File(startingDirectory);
        File tmpFile;
        String[] thisDirContents;
        HashSet dirsFound = new HashSet();
        HashSet subDirFilesFound;
        
        //Check that this is a valid directory
        if (!startDir.isDirectory()) {
            throw new java.io.IOException(startingDirectory+" was not a valid directory");
        }
        
        //Add the current directory to the output list
        dirsFound.add(startingDirectory);
        
        //Get the contents of the current directory
        thisDirContents = startDir.list();
        
            if (thisDirContents!=null) {
            //Now loop through , apply filter , or adding them to list of sub dirs
            for (int a=0; a<thisDirContents.length;a++) {

              //Get Handle to (full) file (inc path)  
              tmpFullFile=FileUtil.combineFileAndDirectory(thisDirContents[a]
                                                                    startingDirectory);

              tmpFile = new File(tmpFullFile);
                
              //We're only interested in directories
                if (tmpFile.isDirectory()) {
                    
                    //Add this to the directory list
                    dirsFound.add(tmpFullFile);
                    
                    //Now Do Recursive Call (to this method)if Directory
                    tmpSubDir = FileUtil.combineFileAndDirectory(thisDirContents[a]
                                                                    startingDirectory);
                    subDirFilesFound = DirectoryWalker.getDirs(tmpSubDir);
                    dirsFound.addAll(subDirFilesFound);
                }   

            }
         }
            
        return dirsFound;
        
    }

}


/**
 * Title:        NoUnit - Identify Classes that are not being unit Tested
 *
 * Copyright (C) 2001  Paul Browne , FirstPartners.net
 *
 *
 * 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 Paul Browne
 @version 0.6
 */


/**
 * Class to manage files within a directory structure<BR>
 */
 class FileUtil {

 /**
   * Combines file and directory , using path delimeters
   @param fileName
   @param filePath
   @return combinedPath
   */
  public static String combineFileAndDirectory (String fileName , String filePath) {

    String combinedPath = null;

    //Checking incoming values
      if ((fileName==null)||(filePath==null)) {
        return null;
      }

      if ((fileName.equals(""))||(filePath.equals(""))) {
        return null;
      }

    //Add character to end of Directory if required
    if ((filePath.endsWith("\\")||(filePath.endsWith("/")))) {
      //nothing
    else {
      //add character
      filePath = filePath + String.valueOf(File.separatorChar);
    }

    //Add two together
    combinedPath = filePath+fileName;

    return combinedPath;

  }
   
}

   
    
    
    
    
  
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22. Get name of parent directory
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31. Calculate directory size
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33. Determining If Two Filename Paths Refer to the Same File
34. Recursive directory deletion
35. Recursivly delete directory
36. Searches through the directory tree
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