ClassChecker.java

package  ij.plugin;
import ij.*;
import ij.util.*;
import java.io.*;
import java.util.*;

public class ClassChecker implements PlugIn {

    char separatorChar = Prefs.separator.charAt(0);

    public void run(String arg) {
        deleteDuplicates();
    }
    
    void deleteDuplicates() {
        String[] paths = getClassFiles();
        String name;
        File file1, file2;
        long date1, date2;
        for (int i=0; i<paths.length; i++) {
            name = getName(paths[i]);
            if (name.endsWith("classx"))
                continue;
            for (int j=i+1; j<paths.length; j++) {
                if (paths[j].endsWith(name)) {
                    file1 = new File(paths[i]);
                    file2 = new File(paths[j]);
                    if (file1==null || file2==null)
                        continue;
                    date1 = file1.lastModified();
                    date2 = file2.lastModified();
                    if (date1<date2) {
                        write(paths[i]);
                        file1.delete();
                        break;
                    } else if (date2<date1) {
                        write(paths[j]);
                        paths[j] += "x";
                        file2.delete();
                    } else {
                        if (paths[i].endsWith("plugins"+name)) {
                            write(paths[i]);
                            file1.delete();
                            break;
                        } else if (paths[j].endsWith("plugins"+name)) {
                            write(paths[j]);
                            paths[j] += "x";
                            file2.delete();
                        }
                    }
                }
            }
        }
    }

    void write(String path) {
        IJ.log("Deleting duplicate class: "+path);
    }

    public String getName(String path) {
        int index = path.lastIndexOf(separatorChar);
        return (index < 0) ? path : path.substring(index);
    }

    String[] getClassFiles() {
        String path = Menus.getPlugInsPath();
        if (path==null)
            return null;
        File f = new File(path);
        String[] list = f.list();
        if (list==null) return null;
        Vector v = new Vector();
        for (int i=0; i<list.length; i++) {
            String name = list[i];
            boolean isClassFile = name.endsWith(".class");
            if (isClassFile) {
                //className = className.substring(0, className.length()-6); 
                v.addElement(path+name);
            } else {
                if (!isClassFile)
                    getSubdirectoryClassFiles(path, name, v);
            }
        }
        list = new String[v.size()];
        v.copyInto((String[])list);
        return list;
    }

    void getSubdirectoryClassFiles(String path, String dir, Vector v) {
        //IJ.write("getSubdirectoryClassFiles: "+path+dir);
        if (dir.endsWith(".java"))
            return;
        File f = new File(path, dir);
        if (!f.isDirectory())
            return;
        String[] list = f.list();
        if (list==null)
            return;
        dir += Prefs.separator;
        for (int i=0; i<list.length; i++) {
            String name = list[i];
            if (name.endsWith(".class")) {
                //name = name.substring(0, name.length()-6); // remove ".class"
                v.addElement(path+dir+name);
                //IJ.write("File: "+f+"/"+name);
            }
        }
    }

}