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/***********************************************************************
*
* Copyright (c) 2006 Manuel Traut and Volker Dahnke
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors: Manuel Traut and Volker Dahnke
*
***********************************************************************/
package YalpServer;
import java.io.*;
import java.util.*;
/************************************************************************
*
* Class FileFinder
*
* <em>algorithm for scanning files recursively</em>
*
* @author Volker Dahnke / Manuel Traut
*
* @version 0.6 14-12-2005<br>
*
* @see FileBrowser
*
************************************************************************/
public class FileFinder
{
private ArrayList<File> files;
/**
* Constructor: scans subdirectories of commited directory
* uses only files with allowed extensions
* @param start
* directory to scan
* @param extensions
* allowed extensions
*/
public FileFinder( String start, String extensions[] ) {
this.files = new ArrayList<File>();
Stack<File> dirs = new Stack<File>();
File startdir = new File(start);
// push startdir to stack
if (startdir.isDirectory()) dirs.push(startdir);
// startdir is File
else {
if (match(startdir.getName(), extensions)) this.files.add(startdir);
return;
}
// for each dir on stack
while (dirs.size() > 0) {
// contents of dir on stack
for (File file : dirs.pop().listFiles()){
try {
// add subdirectory to stack
if (file.isDirectory()) dirs.push(file);
// if file is of correct filetype add it to filelist
else if (match(file.getName(), extensions)) this.files.add(file);
} catch (NullPointerException e) {
System.out.println("FileFinder: "+ file.getName() +"Premission denied");
}
}
}
}
/**
* returns and prints out all Medias found
* @return ArrayList<File>
* all found Medias
*/
public ArrayList<File> getFiles(){
print();
return this.files;
}
/**
* prints out found medias
*
*/
public void print() {
System.out.println( "Found " + files.size() + " file" + (files.size() == 1 ? "." : "s.") );
for ( File f : files ) System.out.println( f.getAbsolutePath() );
}
/**
* checks if file extension matches or not
*
* @param s
* file to check
* @param suffixes
* allowed extensions
*
* @return boolean: true if it's a media, yalp can handle
*/
private static boolean match( String s, String suffixes[] ) {
for ( String suffix : suffixes ) {
int huhu = s.length();
int huhu2 = suffix.length();
int huhu3 = huhu - huhu2;
if ( s.length() >= suffix.length() && s.substring(huhu3, s.length()).equalsIgnoreCase(suffix) ) return true;
}
return false;
}
}
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