michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.util;
michael@0: 
michael@0: import android.util.Log;
michael@0: 
michael@0: import java.io.File;
michael@0: import java.io.IOException;
michael@0: import java.io.FilenameFilter;
michael@0: 
michael@0: import org.mozilla.gecko.mozglue.RobocopTarget;
michael@0: 
michael@0: public class FileUtils {
michael@0:     private static final String LOGTAG= "GeckoFileUtils";
michael@0:     /*
michael@0:     * A basic Filter for checking a filename and age.
michael@0:     **/
michael@0:     static public class NameAndAgeFilter implements FilenameFilter {
michael@0:         final private String mName;
michael@0:         final private double mMaxAge;
michael@0: 
michael@0:         public NameAndAgeFilter(String name, double age) {
michael@0:             mName = name;
michael@0:             mMaxAge = age;
michael@0:         }
michael@0: 
michael@0:         @Override
michael@0:         public boolean accept(File dir, String filename) {
michael@0:             if (mName == null || mName.matches(filename)) {
michael@0:                 File f = new File(dir, filename);
michael@0: 
michael@0:                 if (mMaxAge < 0 || System.currentTimeMillis() - f.lastModified() > mMaxAge) {
michael@0:                     return true;
michael@0:                 }
michael@0:             }
michael@0: 
michael@0:             return false;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @RobocopTarget
michael@0:     public static void delTree(File dir, FilenameFilter filter, boolean recurse) {
michael@0:         String[] files = null;
michael@0: 
michael@0:         if (filter != null) {
michael@0:           files = dir.list(filter);
michael@0:         } else {
michael@0:           files = dir.list();
michael@0:         }
michael@0: 
michael@0:         if (files == null) {
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         for (String file : files) {
michael@0:             File f = new File(dir, file);
michael@0:             delete(f, recurse);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public static boolean delete(File file) throws IOException {
michael@0:         return delete(file, true);
michael@0:     }
michael@0: 
michael@0:     public static boolean delete(File file, boolean recurse) {
michael@0:         if (file.isDirectory() && recurse) {
michael@0:             // If the quick delete failed and this is a dir, recursively delete the contents of the dir
michael@0:             String files[] = file.list();
michael@0:             for (String temp : files) {
michael@0:                 File fileDelete = new File(file, temp);
michael@0:                 try {
michael@0:                     delete(fileDelete);
michael@0:                 } catch(IOException ex) {
michael@0:                     Log.i(LOGTAG, "Error deleting " + fileDelete.getPath(), ex);
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         // Even if this is a dir, it should now be empty and delete should work
michael@0:         return file.delete();
michael@0:     }
michael@0: }