com.liferay.localization.zh.util.LocalizationZHUtil.java Source code

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Here is the source code for com.liferay.localization.zh.util.LocalizationZHUtil.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.localization.zh.util;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.Validator;

import java.io.InputStream;

import java.util.HashMap;
import java.util.Map;

/**
 * @author Brian Wing Shun Chan
 * @author Samuel Kong
 */
public class LocalizationZHUtil {

    public static String getSimplifiedText(String traditionalText) {
        return _instance._getSimplifiedText(traditionalText);
    }

    public static String getTraditionalText(String simplifiedText) {
        return _instance._getTraditionalText(simplifiedText);
    }

    public static boolean isCJKUnifiedIdeographString(String s) {
        if (Validator.isNull(s)) {
            return false;
        }

        for (int i = 0; i < s.length(); i++) {
            int codePoint = s.codePointAt(i);

            if ((codePoint >= _CJK_UNIFIED_IDEOGRAPHS_START) && (codePoint <= _CJK_UNIFIED_IDEOGRAPHS_END)) {

                return true;
            }

            if ((codePoint >= _CJK_UNIFIED_IDEOGRAPHS_EXT_A_START)
                    && (codePoint <= _CJK_UNIFIED_IDEOGRAPHS_EXT_A_END)) {

                return true;
            }

            if ((codePoint >= _CJK_UNIFIED_IDEOGRAPHS_EXT_B_START)
                    && (codePoint <= _CJK_UNIFIED_IDEOGRAPHS_EXT_B_END)) {

                return true;
            }
        }

        return false;
    }

    private LocalizationZHUtil() {
        try {
            Class<?> clazz = getClass();

            InputStream inputStream = clazz.getResourceAsStream("dependencies/zh_CN-to-zh_TW.txt");

            String[] lines = StringUtil.split(StringUtil.read(inputStream), StringPool.NEW_LINE);

            for (String line : lines) {
                char simplifiedChar = line.charAt(0);
                char traditionalChar = line.charAt(2);

                _simplifiedCharactersToTraditionalCharactersMap.put(simplifiedChar, traditionalChar);
                _traditionalCharactersToSimplifiedCharactersMap.put(traditionalChar, simplifiedChar);
            }
        } catch (Exception e) {
            _log.error(e, e);
        }
    }

    private String _getSimplifiedText(String traditionalText) {
        return _translateText(_traditionalCharactersToSimplifiedCharactersMap, traditionalText);
    }

    private String _getTraditionalText(String simplifiedText) {
        return _translateText(_simplifiedCharactersToTraditionalCharactersMap, simplifiedText);
    }

    private String _translateText(Map<Character, Character> map, String text) {
        StringBundler sb = new StringBundler(text.length());

        char[] chars = text.toCharArray();

        for (char c : chars) {
            Character translatedCharacter = map.get(c);

            if (translatedCharacter == null) {
                sb.append(c);
            } else {
                sb.append(translatedCharacter);
            }
        }

        return sb.toString();
    }

    private static final int _CJK_UNIFIED_IDEOGRAPHS_END = 40959;

    private static final int _CJK_UNIFIED_IDEOGRAPHS_EXT_A_END = 19903;

    private static final int _CJK_UNIFIED_IDEOGRAPHS_EXT_A_START = 13312;

    private static final int _CJK_UNIFIED_IDEOGRAPHS_EXT_B_END = 173791;

    private static final int _CJK_UNIFIED_IDEOGRAPHS_EXT_B_START = 131072;

    private static final int _CJK_UNIFIED_IDEOGRAPHS_START = 19968;

    private static Log _log = LogFactoryUtil.getLog(LocalizationZHUtil.class);

    private static LocalizationZHUtil _instance = new LocalizationZHUtil();

    private Map<Character, Character> _simplifiedCharactersToTraditionalCharactersMap = new HashMap<Character, Character>();
    private Map<Character, Character> _traditionalCharactersToSimplifiedCharactersMap = new HashMap<Character, Character>();

}