/**
* @param ch
* the given Chinese character
* @param targetPinyinSystem
* indicates target Chinese Romanization system should be
* converted to
* @return string representations of target Chinese Romanization system
* corresponding to the given Chinese character in array format;
* null if error happens
*
* @see PinyinRomanizationType
*/
private static string[] convertToTargetPinyinStringArray(char ch,
PinyinRomanizationType targetPinyinSystem)
{
string[] hanyuPinyinStringArray = getUnformattedHanyuPinyinStringArray(ch);
if (null != hanyuPinyinStringArray)
{
string[] targetPinyinStringArray = new string[hanyuPinyinStringArray.Length];
for (int i = 0; i < hanyuPinyinStringArray.Length; i++)
{
targetPinyinStringArray[i] = PinyinRomanizationTranslator.convertRomanizationSystem(hanyuPinyinStringArray[i], PinyinRomanizationType.HANYU_PINYIN, targetPinyinSystem);
}
return(targetPinyinStringArray);
}
else
{
return(null);
}
}
/**
* convert the given unformatted Pinyin string from source Romanization
* system to target Romanization system
*
* @param sourcePinyinStr
* the given unformatted Pinyin string
* @param sourcePinyinSystem
* the Romanization system which is currently used by the given
* unformatted Pinyin string
* @param targetPinyinSystem
* the Romanization system that should be converted to
* @return unformatted Pinyin string in target Romanization system; null if
* error happens
*/
public static string convertRomanizationSystem(string sourcePinyinStr,
PinyinRomanizationType sourcePinyinSystem,
PinyinRomanizationType targetPinyinSystem)
{
string pinyinString = TextHelper.ExtractPinyinString(sourcePinyinStr);
string toneNumberStr = TextHelper.ExtractToneNumber(sourcePinyinStr);
// return value
string targetPinyinStr = null;
try
{
// find the node of source Pinyin system
string xpathQuery1 = "//" + sourcePinyinSystem.TagName
+ "[text()='" + pinyinString + "']";
XmlDocument pinyinMappingDoc = PinyinRomanizationResource.getInstance().PinyinMappingDoc;
XmlNode hanyuNode = pinyinMappingDoc.SelectSingleNode(xpathQuery1);
if (null != hanyuNode)
{
// find the node of target Pinyin system
string xpathQuery2 = "../" + targetPinyinSystem.TagName
+ "/text()";
string targetPinyinStrWithoutToneNumber = hanyuNode.SelectSingleNode(xpathQuery2).Value;
targetPinyinStr = targetPinyinStrWithoutToneNumber
+ toneNumberStr;
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
return(targetPinyinStr);
}