whfhost.js

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		if (a_strQuery.length > a_strTerm.length )
			return false ;
		var bPrefix = true ;
		var i ; 
		for (i=0; i< a_strQuery.length;i++)
		{
			if (a_strQuery.charAt(i) != a_strTerm.charAt(i))
			{
				bPrefix = false ;
				break ;
			}
		}
		return bPrefix ;
	}

	this.getAttr = function( a_strTagName )
	{
		var nArgsNum = this.getAttr.arguments.length;
		if ( nArgsNum < 2 || nArgsNum % 2 != 0 )
			return "";
			
		with( this.curData )
		{
			for ( var i = 0; i < aNodes.length; i++ )
			{
				if ( utf8Compare(aNodes[i].strTagName,a_strTagName) != 0 )
					continue;
				for ( var j = 1; j + 1 < nArgsNum - 1; j += 2 )
				{
					if ( utf8Compare(aNodes[i].aAttrs[this.getAttr.arguments[j]], this.getAttr.arguments[j + 1]) != 0 )
						break;
				}
				if ( j + 1 < nArgsNum - 1 )
					continue;
				if ( aNodes[i].aAttrs[this.getAttr.arguments[j]] )
					return aNodes[i].aAttrs[this.getAttr.arguments[j]];
				else
					continue;
			}
			return "";
		}
	}
	
	this.checkAttr = function( a_strTagName )
	{
		var nArgsNum = this.checkAttr.arguments.length;
		if ( nArgsNum < 1 || nArgsNum % 2 == 0 )
			return false;
			
		with( this.curData )
		{
			for ( var i = 0; i < aNodes.length; i++ )
			{
				if ( utf8Compare(aNodes[i].strTagName, a_strTagName) != 0 )
					continue;
				for ( var j = 1; j < nArgsNum - 1; j += 2 )
				{
					if ( utf8Compare(aNodes[i].aAttrs[this.checkAttr.arguments[j]], this.checkAttr.arguments[j + 1]) != 0 )
						break;
				}
				if ( j < nArgsNum - 1 )
					continue;
				return true;
			}
			return false;
		}
	}
}

function putDataXML( xmlDoc, sdocPath )
{
	if(g_bServerResult==true)
	{
		g_bServerResult=false;

		// received the search result
		var cRoot=xmlDoc.lastChild;
		var cResult=new HuginQueryResult();
		var nIndex=1;
		if(cRoot)
		{
			var cNode=cRoot.firstChild;
			while(cNode)
			{
				if(cNode.nodeName=="topic")
				{
					var cTopic=new Object();
					cTopic.nIndex=nIndex;
					cTopic.strTitle=cNode.getAttribute("name");
					cTopic.strUrl=cNode.getAttribute("url");
					cTopic.strSummary=cNode.getAttribute("summary");
					cTopic.nRank=cNode.getAttribute("rank");

					cResult.aTopics[cResult.aTopics.length]=cTopic;
				};
				cNode=cNode.nextSibling;
				nIndex=nIndex+1;
			};
		};

		displayTopics(cResult)
	}else
	{
		theXmlReader.receiveDom( xmlDoc );
		theXmlReader.bSucc = true;
		theXmlReader.funcCallback();
	};
}

function mergeTopicRec(a_strParentRec , a_strNewRec)
{
	var arrOldRecords = a_strParentRec.split("|");	
	var arrNewRecords = a_strNewRec.split("|");	
		
	var mergedRec = "" ;
	var i = 0 ;
	var j = 0 ;	
	var arrFinalRec = new Array();
	while ( i< arrOldRecords.length && j < arrNewRecords.length)
	{		
		var oldTopicRecord = getTopicDetails(arrOldRecords[i]);
		if (oldTopicRecord == null)
		{
			i++;
			continue ;
		}
		var newTopicRecord = getTopicDetails(arrNewRecords[j]);
		if (newTopicRecord == null)
		{
			j++;
			continue ;
		}
		if (oldTopicRecord.nTopicId < newTopicRecord.nTopicId)
		{
			arrFinalRec[arrFinalRec.length] = arrOldRecords[i] ;
			i++ ;
		}
		else if (oldTopicRecord.nTopicId > newTopicRecord.nTopicId)
		{
			arrFinalRec[arrFinalRec.length] = arrNewRecords[j] ;
			j++ ;
		}
		else
		{
			var temp = arrOldRecords[i].split(":");
			var uEmphasis =  (oldTopicRecord.uEmphasis > newTopicRecord.uEmphasis)?oldTopicRecord.uEmphasis:newTopicRecord.uEmphasis;
			var strRec = oldTopicRecord.nTopicId + "," + uEmphasis + ":" + temp [1] ; //since this will not be called in case of phrase search, we can ignore positions of other rec
			arrFinalRec[arrFinalRec.length] = strRec ;
			j++ ;
			i++ ;
		}
	}
	while (i< arrOldRecords.length)
	{
		arrFinalRec[arrFinalRec.length] = arrOldRecords[i] ;
		i++ ;
	}
	while (j < arrNewRecords.length)
	{
		arrFinalRec[arrFinalRec.length] = arrNewRecords[j] ;
		j++ ;
	}

	if (arrFinalRec.length == 0)
		return a_strParentRec ; 
	mergedRec = arrFinalRec[0];
	for ( i = 1 ; i < arrFinalRec.length ; i++)
		mergedRec += "|" + arrFinalRec[i] ;
	return mergedRec ;	
}

function getTopicDetails( a_strRecord )
{
	var index = a_strRecord.indexOf(",");
	if (index == -1)
		return null ;
	var nTopicId = a_strRecord.substring(0 , index);
	var strTopicDetails = a_strRecord.substring(index+1,a_strRecord.length);	
	var aShapes = strTopicDetails.split( ":" );
	if ( aShapes.length == 0 )
		return null;

	var record = new Object();
	record.nTopicId = nTopicId ;
	record.uEmphasis = parseInt( aShapes[0] );
	return record ;
}

function onLoadXMLError()
{
	//For Debug & Test------
	if ( window.gbTesting )
		return;
	//----------------------

	theXmlReader.bSucc = false;
	theXmlReader.funcCallback();
}

////////////////////////////////

function splitPathName( a_strPath )	//this utility function only fit this project.
{
	var rslt = new Object();
	rslt.strDir = "";
	rslt.strFile = "";
	rslt.strExt = "";

	var rg1 = /^(.*[\\\/])?([^\\\/]+)(\.[^\\\/\.]*)$/;
	var rg2 = /^(.*[\\\/])?([^\\\/.]+)$/;
	
	var v = a_strPath.match( rg1 );
	if ( v != null )
	{
		rslt.strDir = v[1];
		rslt.strFile = v[2];
		rslt.strExt = v[3];
	}
	else
	{
		v = a_strPath.match( rg2 );
		rslt.strDir = v[1];
		rslt.strFile = v[2];
		rslt.strExt = "";
	}
	return rslt;
}

function getAbsPath( a_strBasePath, a_strRelPath )
{
	var sf = splitPathName( a_strBasePath );
	return sf.strDir + a_strRelPath;
}

// HuginContext.js------------------------------

function HuginContext()
{
	this.aTasks = new Array();

	this.bExecuting = false;
	this.bCallBack = false;
	this.bCallBackReady = false;

	this.nLastTime = 0;

	this.bError = false;
	this.bCancel = false;
	this.strMsg = null;

	this.reset = function()
	{
		this.aTasks.length = 0;

		this.bExecuting = false;
		this.bCallBack = false;
		this.bCallBackReady = false;

		this.nLastTime = 0;

		this.bError = false;
		this.bCancel = false;
		this.strMsg = null;
	}

	this.push = function()
	{
		var i = 0;
		var ttasks = new Array();
		while( i < context.push.arguments.length )
		{
			var nLen = ttasks.length;
			ttasks[nLen] = new Object();
			ttasks[nLen].func = context.push.arguments[i];
			ttasks[nLen].owner = context.push.arguments[i + 1];
			i += 2;
			var bSuspend = false;
			if ( i < context.push.arguments.length &&
				 context.push.arguments[i].constructor.toString().search( /^\nfunction Boolean/ ) == 0 )
			{
				var bSuspend = context.push.arguments[i];
				++i;
			}
			ttasks[nLen].bSuspend = bSuspend;
		}
		for ( i = ttasks.length - 1; i >= 0; --i )
			context.aTasks[context.aTasks.length] = ttasks[i];
	}

	this.pop = function()
	{
		if ( context.aTasks.length == 0 )
			return null;
		
		var task = context.aTasks[context.aTasks.length - 1];
		context.aTasks.length--;	
		return task;
	}

	this.initTime = function()
	{
		context.nLastTime = ( new Date() ).getTime();
	}
	
	this.needBreathe = function()
	{
		var nCurTime = ( new Date() ).getTime();
		return nCurTime - context.nLastTime >= 100;
	}

	this.resume = function()
	{
		if ( context.bExecuting )
		{
			if ( context.bCallBack )
				context.bCallBackReady = true;
			return;
		}
	
		context.bExecuting = true;
		context.initTime();
		while ( true )
		{
			if ( context.bCancel )
			{
				context.bExecuting = false;
				g_CurState = ECS_CANCELED;
				updateResultView();
				return true;
			}
			
			var task = context.pop();
			if ( task == null )
			{	//All tasks were finished.
				context.bExecuting = false;
				return true;
			}

			context.bCallBack = task.bSuspend;
			task.func( context, task.owner, context.resume );	//If it is not a suspend task, the 3rd argument will be ignored.
			if ( context.bError )
			{	//Failed. Stop executing.
				context.bExecuting = false;
				g_CurState = ECS_FATALERROR;
				updateResultView();
				return;
			}

			if ( context.bCallBack && !context.bCallBackReady )
			{	//Callback function not finished. Give the resume right to it.
				context.bExecuting = false;
				return;
			}
			context.bCallBack = false;
			context.bCallBackReady = false;

			if ( context.needBreathe() )
			{	//Give GUI a chance to process messages.
				context.bExecuting = false;
				updateResultView();
				if(gbAIR)
					context.resume();
				else setTimeout( "context.resume();", 1 );
				return;
			}
		}
	}
	
	this.stop = function()
	{
		context.bCancel = true;
	}
}

// Base64.js------------------------------------

var XX = 127;		//mark for not used

var s_strBase64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var s_aAsciiToBase64 = new Array
(
	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,		//  00~0F
	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,		//  10~1F
	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	XX,	62,	XX,	XX,	XX,	63,		//  20~2F	'+'=62, '/'=63
	52,	53,	54,	55,	56,	57,	58,	59,	60,	61,	XX,	XX,	XX,	XX,	XX,	XX,		//  30~3F	'0'=52 to '9'=61
	XX,	0,	1,	2,	3,	4,	5,	6,	7,	8,	9,	10,	11,	12,	13,	14,		//  40~4F	'A'=0 to 'O'=14
	15,	16,	17,	18,	19,	20,	21,	22,	23,	24,	25,	XX,	XX,	XX,	XX,	XX,		//  50~5F	'P'=15 to 'Z'=25
	XX,	26,	27,	28,	29,	30,	31,	32,	33,	34,	35,	36,	37,	38,	39,	40,		//  60~6F	'a'=26 to 'o'=40
	41,	42,	43,	44,	45,	46,	47,	48,	49,	50,	51,	XX,	XX,	XX,	XX,	XX		//  70~7F	'p'=41 to 'z'=51
);
var s_aOdinToAscii = new Array
(	// the first the char is '\0', so that s_aOdinToAscii[0] means end of string
	'\0', '0', '1', '2', '3', '4', '5', '6',
	'7', '8', '9', '|', ':', ',', '\0', '\0'
);

var s_aBase64DecodeMap = new Array();

function _decordBase64ToStr( a_nA, a_nB )
{
	var uBuf = ( s_aAsciiToBase64[a_nA] << 6 ) + s_aAsciiToBase64[a_nB];
	var strRslt = "";
	var uCur = 0;
	for ( var i = 0; i <= 8; i += 4 )
	{	
		uCur = uBuf >> ( 8 - i ) & 0x000F;
		if ( uCur == 0 )
			return strRslt;
		strRslt += s_aOdinToAscii[uCur];
	}
	return strRslt;
}

// Decode a base64 formatted string into an odin formatted one (only contains charactors occur in s_strBase64
// [in]a_strBase64:	Base64 formatted string;
// RESULT:			Odin formatted string;
function decodeBase64ToOdin( a_strBase64 )
{
	var nLen = a_strBase64.length;
	var strRslt = "";
	var str = 0;
	for ( var i = 0; i + 1 < nLen; i += 2 )
	{
		str = s_aBase64DecodeMap[( a_strBase64.charCodeAt( i ) << 8 ) + a_strBase64.charCodeAt( i + 1 )]
		if ( !str )		return strRslt;
		strRslt += str;
	}
	if ( i < nLen )
	{
		str = s_aBase64DecodeMap[( a_strBase64.charCodeAt( i ) << 8 ) + s_strBase64.charCodeAt( 0 )]
		if ( !str )		return strRslt;
		strRslt += str;
	}
	return strRslt;
}

function initBase64DecodeMap()
{
	var i, j;
	for ( i = 0; i < 64; i++ )
		for ( j = 0; j < 64; j++ )
			s_aBase64DecodeMap[( s_strBase64.charCodeAt( i ) << 8 ) + s_strBase64.charCodeAt( j )] = _decordBase64ToStr( s_strBase64.charCodeAt( i ), s_strBase64.charCodeAt( j ) );
	for ( i = 0; i < 64; i++ )
		s_aBase64DecodeMap[s_strBase64.charCodeAt( i ) << 8] = _decordBase64ToStr( s_strBase64.charCodeAt( i ), s_strBase64.charCodeAt( 0 ) );
}

initBase64DecodeMap();

// HuginPackageReader.js------------------------

function HuginStemRecordTopicShape()
{
	this.aPositions = null;
}

function HuginStemRecordTopic()
{
	this.uEmphasis = null;
	this.aShapes = null;
}

function HuginStemRecord()
{
	this.aTopics = null;
}

function HuginPackageReaderResult()
{
	this.strNefStem = null;
	this.strRecord = null;
	this.bStopWord = null ;
}

function HuginPackageReader()
{
	this.strPackagePath = null;			//in
	this.strSynonymPath = null ;		//in
	this.recordResult = null;			//out
	this.strQueryWord = null;           //in
	this.bPhraseSearch = false ;
	this.bSucc = true;

	this.prepareQuery = function()
	{
		this.recordResult = null;			//out
		this.bSucc = true;
		this.strQueryWord = null;
		this.bPhraseSearch = false ;
	}

	this.loadFromFile = function( a_Context, a_this, a_funcCallback )
	{
		theXmlReader.loadFromFile( a_funcCallback, false );
	}

	this.pickSynonyms = function( a_strStem )
	{
		return theXmlReader.getSynonyms(a_strStem).split( "," );
	}
	
	this.setSynonymForHighlighting = function( a_Context, a_this )
	{
		if ( !theXmlReader.bSucc )
		{
			return;
		}
		var strSyn = "";
		var arySynonyms = a_this.pickSynonyms( a_this.strQueryWord );
		for ( var i = 0; i < arySynonyms.length; ++i )
		{
			strSyn += " " + arySynonyms[i];