com.dnielfe.manager.utils.SortUtils.java Source code

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Here is the source code for com.dnielfe.manager.utils.SortUtils.java

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/*
 * Copyright (C) 2014 Simple Explorer
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */

package com.dnielfe.manager.utils;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;

import org.apache.commons.io.FilenameUtils;

import com.dnielfe.manager.settings.Settings;

public class SortUtils {

    private static final int SORT_ALPHA = 0;
    private static final int SORT_TYPE = 1;
    private static final int SORT_SIZE = 2;
    private static final int SORT_DATE = 3;

    public static ArrayList<String> sortList(ArrayList<String> content, String current) {
        int len = content != null ? content.size() : 0;
        int index = 0;
        String[] items = new String[len];
        content.toArray(items);

        switch (Settings.mSortType) {
        case SORT_ALPHA:
            Arrays.sort(items, Comparator_ALPH);
            content.clear();

            for (String a : items) {
                content.add(a);
            }
            break;
        case SORT_SIZE:
            Arrays.sort(items, Comparator_SIZE);
            content.clear();

            for (String a : items) {
                if (new File(current + "/" + a).isDirectory())
                    content.add(index++, a);
                else
                    content.add((String) a);
            }
            break;
        case SORT_TYPE:
            Arrays.sort(items, Comparator_TYPE);
            content.clear();

            for (String a : items) {
                if (new File(current + "/" + a).isDirectory())
                    content.add(index++, a);
                else
                    content.add(a);
            }
            break;

        case SORT_DATE:
            Arrays.sort(items, Comparator_DATE);
            content.clear();

            for (String a : items) {
                if (new File(current + "/" + a).isDirectory())
                    content.add(index++, a);
                else
                    content.add(a);
            }
            break;
        }

        return content;
    }

    public static final Comparator<? super String> Comparator_ALPH = new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            return arg0.toLowerCase().compareTo(arg1.toLowerCase());
        }
    };

    public final static Comparator<? super String> Comparator_SIZE = new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            File a = new File(arg0);
            File b = new File(arg1);

            if (a.isDirectory() && b.isDirectory()) {
                return arg0.toLowerCase().compareTo(arg1.toLowerCase());
            }

            if (a.isDirectory()) {
                return -1;
            }

            if (b.isDirectory()) {
                return 1;
            }

            final long len_a = a.length();
            final long len_b = b.length();

            if (len_a == len_b) {
                return arg0.toLowerCase().compareTo(arg1.toLowerCase());
            }

            if (len_a < len_b) {
                return -1;
            }

            return 1;
        }
    };

    public final static Comparator<? super String> Comparator_TYPE = new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            File a = new File(arg0);
            File b = new File(arg1);

            if (a.isDirectory() && b.isDirectory()) {
                return arg0.toLowerCase().compareTo(arg1.toLowerCase());
            }

            if (a.isDirectory()) {
                return -1;
            }

            if (b.isDirectory()) {
                return 1;
            }

            final String ext_a = FilenameUtils.getExtension(a.getName());
            final String ext_b = FilenameUtils.getExtension(b.getName());

            if (ext_a.isEmpty() && ext_b.isEmpty()) {
                return arg0.toLowerCase().compareTo(arg1.toLowerCase());
            }

            if (ext_a.isEmpty()) {
                return -1;
            }

            if (ext_b.isEmpty()) {
                return 1;
            }

            final int res = ext_a.compareTo(ext_b);
            if (res == 0) {
                return arg0.toLowerCase().compareTo(arg1.toLowerCase());
            }
            return res;
        }
    };

    private final static Comparator<? super String> Comparator_DATE = new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            Long first = new File(arg0).lastModified();
            Long second = new File(arg1).lastModified();

            return first.compareTo(second);
        }
    };
}