TempRepository.java

package org.objectweb.jonas_lib.genbase.utils;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;

public class TempRepository {

    private static TempRepository instance = null;

    private List directories;

    private TempRepository() {
        directories = new Vector();
    }

    public static TempRepository getInstance() {
        if (instance == null) {
            instance = new TempRepository();
        }

        return instance;
    }

    public void addDir(File file) {
        directories.add(file);
    }

    public boolean deleteAll() {
        boolean result = true;

        for (Iterator i = directories.iterator(); i.hasNext();) {
            File dir = (File) i.next();

            // delete only if file exists
            if (dir.exists()) {
                result &= delete(dir);
            }
        }

        return result;
    }

    private boolean delete(File f) {
        if (f.isFile()) {
            return f.delete();
        } else {
            File[] childs = f.listFiles();
            if (childs == null) {
                // no childs
                return f.delete();
            } else {
                // childs
                boolean result = true;
                for (int i = 0; i < childs.length; i++) {
                    result &= delete(childs[i]);
                }
                return result && f.delete();
            }
        }
    }

    public File createDir() throws IOException {
        // create file
        File tmp = File.createTempFile("wsgen", null);

        if (!tmp.delete()) {
            throw new IOException("Cannot delete temporary file");
        }

        // create directory
        if (!tmp.mkdir()) {
            throw new IOException("Cannot create temporary directory");
        }

        // add in repo
        addDir(tmp);

        return tmp;
    }
}

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