/**
* This file is part of pinyin4j (http://sourceforge.net/projects/pinyin4j/) and distributed under
* GNU GENERAL PUBLIC LICENSE (GPL).
*
* pinyin4j 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 2 of the
* License, or (at your option) any later version.
*
* pinyin4j 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 pinyin4j.
*/
/**
*
*/
package net.sourceforge.pinyin4j;
import com.hp.hpl.sparta.Document;
import com.hp.hpl.sparta.Element;
import com.hp.hpl.sparta.ParseException;
/**
* A class contains logic that translates from Hanyu Pinyin to Gwoyeu Romatzyh
*
* @author Li Min (xmlerlimin@gmail.com)
*
*/
class GwoyeuRomatzyhTranslator {
/**
* @param hanyuPinyinStr
* Given unformatted Hanyu Pinyin with tone number
* @return Corresponding Gwoyeu Romatzyh; null if no mapping is found.
*/
static String convertHanyuPinyinToGwoyeuRomatzyh(String hanyuPinyinStr) {
String pinyinString = TextHelper.extractPinyinString(hanyuPinyinStr);
String toneNumberStr = TextHelper.extractToneNumber(hanyuPinyinStr);
// return value
String gwoyeuStr = null;
try {
// find the node of source Pinyin system
String xpathQuery1 =
"//" + PinyinRomanizationType.HANYU_PINYIN.getTagName() + "[text()='" + pinyinString
+ "']";
Document pinyinToGwoyeuMappingDoc =
GwoyeuRomatzyhResource.getInstance().getPinyinToGwoyeuMappingDoc();
Element hanyuNode = pinyinToGwoyeuMappingDoc.xpathSelectElement(xpathQuery1);
if (null != hanyuNode) {
// find the node of target Pinyin system
String xpathQuery2 =
"../" + PinyinRomanizationType.GWOYEU_ROMATZYH.getTagName()
+ tones[Integer.parseInt(toneNumberStr) - 1] + "/text()";
String targetPinyinStrWithoutToneNumber = hanyuNode.xpathSelectString(xpathQuery2);
gwoyeuStr = targetPinyinStrWithoutToneNumber;
}
} catch (ParseException e) {
e.printStackTrace();
}
return gwoyeuStr;
}
/**
* The postfixs to distinguish different tone of Gwoyeu Romatzyh
*
* <i>Should be removed if new xPath parser supporting tag name with number.</i>
*/
static private String[] tones = new String[] {"_I", "_II", "_III", "_IV", "_V"};
}