/*

 * Copyright (c) 1996, 2012, Oracle and/or its affiliates. All rights reserved.

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

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

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

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

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

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved

 * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved

 *

 * The original version of this source code and documentation

 * is copyrighted and owned by Taligent, Inc., a wholly-owned

 * subsidiary of IBM. These materials are provided under terms

 * of a License Agreement between Taligent and Sun. This technology

 * is protected by multiple US and International patents.

 *

 * This notice and attribution to Taligent may not be removed.

 * Taligent is a registered trademark of Taligent, Inc.

 *

 */

package sun.util.resources;

import java.security.AccessController;

import java.security.PrivilegedAction;

import java.util.Iterator;

import java.util.List;

import java.util.Locale;

import java.util.ResourceBundle;

import sun.util.locale.provider.LocaleProviderAdapter;

import static sun.util.locale.provider.LocaleProviderAdapter.Type.JRE;

/**

 * Provides information about and access to resource bundles in the

 * sun.text.resources and sun.util.resources packages or in their corresponding

 * packages for CLDR.

 *

 * @author Asmus Freytag

 * @author Mark Davis

 */

public class LocaleData {

    private final LocaleProviderAdapter.Type type;

    public LocaleData(LocaleProviderAdapter.Type type) {

        this.type = type;

    }

    /**

     * Gets a calendar data resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public ResourceBundle getCalendarData(Locale locale) {

        return getBundle(type.getUtilResourcesPackage() + ".CalendarData", locale);

    }

    /**

     * Gets a currency names resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public OpenListResourceBundle getCurrencyNames(Locale locale) {

        return (OpenListResourceBundle) getBundle(type.getUtilResourcesPackage() + ".CurrencyNames", locale);

    }

    /**

     * Gets a locale names resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public OpenListResourceBundle getLocaleNames(Locale locale) {

        return (OpenListResourceBundle) getBundle(type.getUtilResourcesPackage() + ".LocaleNames", locale);

    }

    /**

     * Gets a time zone names resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    }

    /**

     * Gets a collation data resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public ResourceBundle getCollationData(Locale locale) {

        return getBundle(type.getTextResourcesPackage() + ".CollationData", locale);

    }

    /**

     * Gets a date format data resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public ResourceBundle getDateFormatData(Locale locale) {

        return getBundle(type.getTextResourcesPackage() + ".FormatData", locale);

    }

    /**

     * Gets a number format data resource bundle, using privileges

     * to allow accessing a sun.* package.

     */

    public ResourceBundle getNumberFormatData(Locale locale) {

        return getBundle(type.getTextResourcesPackage() + ".FormatData", locale);

    }

    public static ResourceBundle getBundle(final String baseName, final Locale locale) {

        return AccessController.doPrivileged(new PrivilegedAction<ResourceBundle>() {

                @Override

                public ResourceBundle run() {

                    return ResourceBundle.

                        getBundle(baseName, locale,

                                  LocaleDataResourceBundleControl.getRBControlInstance());

                }

            });

    }

    private static class LocaleDataResourceBundleControl extends ResourceBundle.Control {

        /* Singlton instance of ResourceBundle.Control. */

        private static LocaleDataResourceBundleControl rbControlInstance =

            new LocaleDataResourceBundleControl();

        public static LocaleDataResourceBundleControl getRBControlInstance() {

            return rbControlInstance;

        }

        /*

         * This method overrides the default implementation to search

         * from a prebaked locale string list to determin the candidate

         * locale list.

         *

         * @param baseName the resource bundle base name.

         *        locale   the requested locale for the resource bundle.

         * @returns a list of candidate locales to search from.

         * @exception NullPointerException if baseName or locale is null.

         */

        @Override

         public List<Locale> getCandidateLocales(String baseName, Locale locale) {

            List<Locale> candidates = super.getCandidateLocales(baseName, locale);

            /* Get the locale string list from LocaleDataMetaInfo class. */

            String localeString = LocaleDataMetaInfo.getSupportedLocaleString(baseName);

                    }

                }

            }

            return candidates;

        }

        /*

         * Overrides "getFallbackLocale" to return null so

         * that the fallback locale will be null.

         * @param baseName the resource bundle base name.

         *        locale   the requested locale for the resource bundle.

         * @return null for the fallback locale.

         * @exception NullPointerException if baseName or locale is null.

         */

        @Override

        public Locale getFallbackLocale(String baseName, Locale locale) {

            if (baseName == null || locale == null) {

                throw new NullPointerException();

            }

            return null;

        }

        private static final String CLDR      = ".cldr";

        /**

         * Changes baseName to its per-language package name and

         * calls the super class implementation. For example,

         * if the baseName is "sun.text.resources.FormatData" and locale is ja_JP,

         * the baseName is changed to "sun.text.resources.ja.FormatData". If

         * baseName contains "cldr", such as "sun.text.resources.cldr.FormatData",

         * the name is changed to "sun.text.resources.cldr.jp.FormatData".

         */

        @Override

        public String toBundleName(String baseName, Locale locale) {

            String newBaseName = baseName;

            String lang = locale.getLanguage();

            if (lang.length() > 0) {

                if (baseName.startsWith(JRE.getUtilResourcesPackage())

                        || baseName.startsWith(JRE.getTextResourcesPackage())) {

                    // Assume the lengths are the same.

                    assert JRE.getUtilResourcesPackage().length()

                        == JRE.getTextResourcesPackage().length();

                    int index = JRE.getUtilResourcesPackage().length();

                    if (baseName.indexOf(CLDR, index) > 0) {

                        index += CLDR.length();

                    }

                    newBaseName = baseName.substring(0, index + 1) + lang

                                      + baseName.substring(index);

                }

            }

            return super.toBundleName(newBaseName, locale);

        }

    }

}