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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @test

 * @bug 8035133

 * @summary Checks that the tags matching the range with quality weight q=0

 *          e.g. en;q=0 must be elimited and must not be the part of output

 */

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Locale;

public class Bug8035133 {

    private static boolean err = false;

    public static void main(String[] args) {

        // checking Locale.lookup with de-ch;q=0

        checkLookup("en;q=0.1, *-ch;q=0.5, de-ch;q=0",

                "de-ch, en, fr-ch", "fr-CH");

        /* checking Locale.lookup with *;q=0 '*' should be ignored

         * in lookup

         */

        checkLookup("en;q=0.1, *-ch;q=0.5, *;q=0",

                "de-ch, en, fr-ch", "de-CH");

        // checking Locale.filter with fr-ch;q=0 in BASIC_FILTERING

        checkFilter("en;q=0.1, fr-ch;q=0.0, de-ch;q=0.5",

                "de-ch, en, fr-ch", "de-CH, en");

        // checking Locale.filter with *;q=0 in BASIC_FILTERING

        checkFilter("de-ch;q=0.6, *;q=0", "de-ch, fr-ch", "");

        // checking Locale.filter with *;q=0 in BASIC_FILTERING

        checkFilter("de-ch;q=0.6, de;q=0", "de-ch", "");

        // checking Locale.filter with *;q=0.6, en;q=0 in BASIC_FILTERING

        checkFilter("*;q=0.6, en;q=0", "de-ch, hi-in, en", "de-CH, hi-IN");

        // checking Locale.filter with de-ch;q=0 in EXTENDED_FILTERING

        checkFilter("en;q=0.1, *-ch;q=0.5, de-ch;q=0",

                "de-ch, en, fr-ch", "fr-CH, en");

        /* checking Locale.filter with *-ch;q=0 in EXTENDED_FILTERING which

         * must make filter to return "" empty or no match

         */

        checkFilter("de-ch;q=0.5, *-ch;q=0", "de-ch, fr-ch", "");

        /* checking Locale.filter with *;q=0 in EXTENDED_FILTERING which

         * must make filter to return "" empty or no match

         */

        checkFilter("*-ch;q=0.5, *;q=0", "de-ch, fr-ch", "");

        /* checking Locale.filter with *;q=0.6, *-Latn;q=0 in

         * EXTENDED_FILTERING

         */

        checkFilter("*;q=0.6, *-Latn;q=0", "de-ch, hi-in, en-Latn",

                "de-CH, hi-IN");

        if (err) {

            throw new RuntimeException("[LocaleMatcher method(s) failed]");

        }

    }

    private static void checkLookup(String ranges, String tags,

            String expectedLocale) {

        List<Locale.LanguageRange> priorityList = Locale.LanguageRange

                .parse(ranges);

        List<Locale> localeList = generateLocales(tags);

        Locale loc = Locale.lookup(priorityList, localeList);

        String actualLocale

                = loc.toLanguageTag();

        if (!actualLocale.equals(expectedLocale)) {

            System.err.println("Locale.lookup failed with ranges: " + ranges

                    + " Expected: " + expectedLocale

                    + " Actual: " + actualLocale);

            err = true;

        }

    }

    private static void checkFilter(String ranges, String tags,

            String expectedLocales) {

        List<Locale.LanguageRange> priorityList = Locale.LanguageRange

                .parse(ranges);

        List<Locale> localeList = generateLocales(tags);

        String actualLocales = getLocalesAsString(

                Locale.filter(priorityList, localeList));

        if (!actualLocales.equals(expectedLocales)) {

            System.err.println("Locale.filter failed with ranges: " + ranges

                    + " Expected: " + expectedLocales

                    + " Actual: " + actualLocales);

            err = true;

        }

    }

    private static List<Locale> generateLocales(String tags) {

        if (tags == null) {

            return null;

        }

        List<Locale> localeList = new ArrayList<>();

        if (tags.equals("")) {

            return localeList;

        }

        String[] t = tags.split(", ");

        for (String tag : t) {

            localeList.add(Locale.forLanguageTag(tag));

        }

        return localeList;

    }

    private static String getLocalesAsString(List<Locale> locales) {

        StringBuilder sb = new StringBuilder();

        Iterator<Locale> itr = locales.iterator();

        if (itr.hasNext()) {

            sb.append(itr.next().toLanguageTag());

        }

        while (itr.hasNext()) {

            sb.append(", ");

            sb.append(itr.next().toLanguageTag());

        }

        return sb.toString().trim();

    }

}