Android Open Source - qrcode-android Locale Manager

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License

The source code is released under:

MIT License

Java Source Code

/*
 * Copyright (C) 2008 ZXing authors// w  w w  .j a va  2  s . c o m
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing.client.android;

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import java.util.*;

/**
 * Handles any locale-specific logic for the client.
 *
 * @author Sean Owen
 */
public final class LocaleManager
{

    private static final String DEFAULT_TLD = "com";
    private static final String DEFAULT_COUNTRY = "US";
    private static final String DEFAULT_LANGUAGE = "en";

    private static final String COUNTRY;
    private static final String LANGUAGE;

    static
    {
        Locale locale = Locale.getDefault();
        COUNTRY = locale == null ? DEFAULT_COUNTRY : locale.getCountry();
        String language = locale == null ? DEFAULT_LANGUAGE : locale.getLanguage();
        // Special case Chinese
        if (Locale.SIMPLIFIED_CHINESE.getLanguage().equals(language))
        {
            language += "-r" + COUNTRY;
        }
        LANGUAGE = language;
    }

    /**
     * Locales (well, countries) where Google web search is available.
     * These should be kept in sync with our translations.
     */
    private static final Map<String, String> GOOGLE_COUNTRY_TLD;

    static
    {
        GOOGLE_COUNTRY_TLD = new HashMap<String, String>();
        GOOGLE_COUNTRY_TLD.put("AR", "com.ar"); // ARGENTINA
        GOOGLE_COUNTRY_TLD.put("AU", "com.au"); // AUSTRALIA
        GOOGLE_COUNTRY_TLD.put("BR", "com.br"); // BRAZIL
        GOOGLE_COUNTRY_TLD.put("BG", "bg"); // BULGARIA
        GOOGLE_COUNTRY_TLD.put(Locale.CANADA.getCountry(), "ca");
        GOOGLE_COUNTRY_TLD.put(Locale.CHINA.getCountry(), "cn");
        GOOGLE_COUNTRY_TLD.put("CZ", "cz"); // CZECH REPUBLIC
        GOOGLE_COUNTRY_TLD.put("DK", "dk"); // DENMARK
        GOOGLE_COUNTRY_TLD.put("FI", "fi"); // FINLAND
        GOOGLE_COUNTRY_TLD.put(Locale.FRANCE.getCountry(), "fr");
        GOOGLE_COUNTRY_TLD.put(Locale.GERMANY.getCountry(), "de");
        GOOGLE_COUNTRY_TLD.put("GR", "gr"); // GREECE
        GOOGLE_COUNTRY_TLD.put("HU", "hu"); // HUNGARY
        GOOGLE_COUNTRY_TLD.put("ID", "co.id"); // INDONESIA
        GOOGLE_COUNTRY_TLD.put("IL", "co.il"); // ISRAEL
        GOOGLE_COUNTRY_TLD.put(Locale.ITALY.getCountry(), "it");
        GOOGLE_COUNTRY_TLD.put(Locale.JAPAN.getCountry(), "co.jp");
        GOOGLE_COUNTRY_TLD.put(Locale.KOREA.getCountry(), "co.kr");
        GOOGLE_COUNTRY_TLD.put("NL", "nl"); // NETHERLANDS
        GOOGLE_COUNTRY_TLD.put("PL", "pl"); // POLAND
        GOOGLE_COUNTRY_TLD.put("PT", "pt"); // PORTUGAL
        GOOGLE_COUNTRY_TLD.put("RU", "ru"); // RUSSIA
        GOOGLE_COUNTRY_TLD.put("SK", "sk"); // SLOVAK REPUBLIC
        GOOGLE_COUNTRY_TLD.put("SI", "si"); // SLOVENIA
        GOOGLE_COUNTRY_TLD.put("ES", "es"); // SPAIN
        GOOGLE_COUNTRY_TLD.put("SE", "se"); // SWEDEN
        GOOGLE_COUNTRY_TLD.put(Locale.TAIWAN.getCountry(), "tw");
        GOOGLE_COUNTRY_TLD.put("TR", "com.tr"); // TURKEY
        GOOGLE_COUNTRY_TLD.put(Locale.UK.getCountry(), "co.uk");
        GOOGLE_COUNTRY_TLD.put(Locale.US.getCountry(), "com");
    }

    /**
     * Google Product Search for mobile is available in fewer countries than web search. See here:
     * http://www.google.com/support/merchants/bin/answer.py?answer=160619
     */
    private static final Map<String, String> GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD;

    static
    {
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD = new HashMap<String, String>();
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put("AU", "com.au"); // AUSTRALIA
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.CHINA.getCountry(), "cn");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.FRANCE.getCountry(), "fr");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.GERMANY.getCountry(), "de");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.ITALY.getCountry(), "it");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.JAPAN.getCountry(), "co.jp");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put("NL", "nl"); // NETHERLANDS
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put("ES", "es"); // SPAIN
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.UK.getCountry(), "co.uk");
        GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD.put(Locale.US.getCountry(), "com");
    }

    /**
     * Book search is offered everywhere that web search is available.
     */
    private static final Map<String, String> GOOGLE_BOOK_SEARCH_COUNTRY_TLD = GOOGLE_COUNTRY_TLD;

    private static final Collection<String> TRANSLATED_HELP_ASSET_LANGUAGES =
            Arrays.asList("en");

    private LocaleManager()
    {
    }

    /**
     * @return country-specific TLD suffix appropriate for the current default locale
     *         (e.g. "co.uk" for the United Kingdom)
     */
    public static String getCountryTLD(Context context)
    {
        return doGetTLD(GOOGLE_COUNTRY_TLD, context);
    }

    /**
     * The same as above, but specifically for Google Product Search.
     *
     * @return The top-level domain to use.
     */
    public static String getProductSearchCountryTLD(Context context)
    {
        return doGetTLD(GOOGLE_PRODUCT_SEARCH_COUNTRY_TLD, context);
    }

    /**
     * The same as above, but specifically for Google Book Search.
     *
     * @return The top-level domain to use.
     */
    public static String getBookSearchCountryTLD(Context context)
    {
        return doGetTLD(GOOGLE_BOOK_SEARCH_COUNTRY_TLD, context);
    }

    private static String doGetTLD(Map<String, String> map, Context context)
    {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
        String countryOverride = null;
        if (countryOverride != null && countryOverride.length() > 0 && !"-".equals(countryOverride))
        {
            String tld = map.get(countryOverride);
            if (tld != null)
            {
                return tld;
            }
        }
        String tld = map.get(COUNTRY);
        return tld == null ? DEFAULT_TLD : tld;
    }

    /**
     * Does a given URL point to Google Book Search, regardless of domain.
     *
     * @param url The address to check.
     * @return True if this is a Book Search URL.
     */
    public static boolean isBookSearchUrl(String url)
    {
        return url.startsWith("http://google.com/books") || url.startsWith("http://books.google.");
    }

    public static String getTranslatedAssetLanguage()
    {
        return TRANSLATED_HELP_ASSET_LANGUAGES.contains(LANGUAGE) ? LANGUAGE : DEFAULT_LANGUAGE;
    }

}

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