com.gammalabs.wifianalyzer.wifi.band.WiFiChannelCountryGHZ5.java Source code

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Here is the source code for com.gammalabs.wifianalyzer.wifi.band.WiFiChannelCountryGHZ5.java

Source

/*
 * WiFi Analyzer
 * Copyright (C) 2016  VREM Software Development <VREMSoftwareDevelopment@gmail.com>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>
 */

package com.gammalabs.wifianalyzer.wifi.band;

import android.support.annotation.NonNull;

import org.apache.commons.lang3.StringUtils;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.SortedSet;
import java.util.TreeSet;

class WiFiChannelCountryGHZ5 {
    private final SortedSet<Integer> channels;
    private final Map<String, SortedSet<Integer>> channelsToExclude;

    WiFiChannelCountryGHZ5() {
        SortedSet<Integer> channelsSet1 = new TreeSet<>(Arrays.asList(36, 40, 44, 48, 52, 56, 60, 64));
        SortedSet<Integer> channelsSet2 = new TreeSet<>(
                Arrays.asList(100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140));
        SortedSet<Integer> channelsSet3 = new TreeSet<>(Arrays.asList(149, 153, 157, 161, 165));

        SortedSet<Integer> channelsToExcludeCanada = new TreeSet<>(Arrays.asList(120, 124, 128));
        SortedSet<Integer> channelsToExcludeIsrael = new TreeSet<>(channelsSet2);
        channelsToExcludeIsrael.addAll(channelsSet3);

        channelsToExclude = new HashMap<>();
        channelsToExclude.put("AU", channelsToExcludeCanada); // Australia
        channelsToExclude.put("CA", channelsToExcludeCanada); // Canada
        channelsToExclude.put("CN", channelsSet2); // China
        channelsToExclude.put("IL", channelsToExcludeIsrael); // Israel
        channelsToExclude.put("JP", channelsSet3); // Japan
        channelsToExclude.put("KR", channelsSet2); // South Korea
        channelsToExclude.put("TR", channelsSet3); // Turkey
        channelsToExclude.put("ZA", channelsSet3); // South Africa

        channels = new TreeSet<>(channelsSet1);
        channels.addAll(channelsSet2);
        channels.addAll(channelsSet3);
    }

    SortedSet<Integer> findChannels(@NonNull String countryCode) {
        SortedSet<Integer> results = new TreeSet<>(channels);
        SortedSet<Integer> exclude = channelsToExclude.get(StringUtils.capitalize(countryCode));
        if (exclude != null) {
            results.removeAll(exclude);
        }
        return Collections.unmodifiableSortedSet(results);
    }

}