zoom_search.js

CD Manager光盘资料管家婆源代码

// ----------------------------------------------------------------------------
// Zoom Search Engine 5.0 (30/4/2007)
//
// This file (search.js) is the JavaScript search front-end for client side
// searches using index files created by the Zoom Search Engine Indexer.
//
// email: [e-mail]
// www: http://www.wrensoft.com
//
// Copyright (C) Wrensoft 2000-2007
//
// This script performs client-side searching with the index data file
// (zoom_index.js) generated by the Zoom Search Engine Indexer. It allows you
// to run searches on mediums such as CD-ROMs, or other local data, where a
// web server is not available.
//
// We recommend against using client-side searches for online websites because
// it requires the entire index data file to be downloaded onto the user's
// local machine. This can be very slow for large websites, and our server-side
// search scripts (available for PHP, ASP and CGI) are far better suited for this.
// However, JavaScript is still an option for smaller websites in a limited
// hosting situation (eg: your web host does not support PHP, ASP or CGI).
// ----------------------------------------------------------------------------

// Include required files for index data, settings, etc.
document.write("<script language=\"JavaScript\" src=\"zoom_index.js\" charset=\"" + Charset + "\"><\/script>");
document.write("<script language=\"JavaScript\" src=\"zoom_pageinfo.js\" charset=\"" + Charset + "\"><\/script>");

document.write("<meta http-equiv=\"content-type\" content=\"text/html; charset=" + Charset + "\">");

// ----------------------------------------------------------------------------
// Settings (change if necessary)
// ----------------------------------------------------------------------------

// The options available in the dropdown menu for number of results
// per page
var PerPageOptions = new Array(10, 20, 50, 100);

// Globals
var SkippedWords = 0;
var searchWords = new Array();
var RegExpSearchWords = new Array();
var SkippedOutputStr = "";

var months = new Array('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');

// Index format
var PAGEDATA_URL = 0;
var PAGEDATA_TITLE = 1;
var PAGEDATA_DESC = 2;
var PAGEDATA_IMG = 3;
var PAGEINFO_DATETIME = 0;
var PAGEINFO_FILESIZE = 1;
var PAGEINFO_CAT = 2;

// ----------------------------------------------------------------------------
// Helper Functions
// ----------------------------------------------------------------------------

// This function will return the value of a GET parameter
function getParam(paramName)
{
    paramStr = document.location.search;
    if (paramStr == "")
        return "";

    // remove '?' in front of paramStr
    if (paramStr.charAt(0) == "?")
        paramStr = paramStr.substr(1);

    arg = (paramStr.split("&"));
    for (i=0; i < arg.length; i++) {
        arg_values = arg[i].split("=")
        if (unescape(arg_values[0]) == paramName) {
            if (UseUTF8 == 1 && self.decodeURIComponent) // check if decodeURIComponent() is defined
                ret = decodeURIComponent(arg_values[1]);
            else
                ret = unescape(arg_values[1]);  // IE 5.0 and older does not have decodeURI
            return ret;
        }
    }
    return "";
}

function getParamArray(paramName)
{
    paramStr = document.location.search;

	var retArray = new Array();
	var retCount = 0;

    if (paramStr == "")
        return retArray;

    // remove '?' in front of paramStr
    if (paramStr.charAt(0) == "?")
        paramStr = paramStr.substr(1);

    arg = (paramStr.split("&"));
    for (i=0; i < arg.length; i++) 
    {
        arg_values = arg[i].split("=")
        if (unescape(arg_values[0]) == paramName) 
        {
            if (UseUTF8 == 1 && self.decodeURIComponent) // check if decodeURIComponent() is defined
                ret = decodeURIComponent(arg_values[1]);
            else
                ret = unescape(arg_values[1]);  // IE 5.0 and older does not have decodeURI            
            retArray[retCount] = ret;
            retCount++;            
        }
    }
    return retArray;	
}

// Compares the two values, used for sorting output results
// Results that match all search terms are put first, highest score
function SortCompare (a, b)
{
    if (a[2] < b[2]) return 1;
    else if (a[2] > b[2]) return -1;
    else if (a[1] < b[1]) return 1;
    else if (a[1] > b[1]) return -1;
    else return 0;
}

function SortByDate(a, b)
{	
	if (pageinfo[a[0]][PAGEINFO_DATETIME] < pageinfo[b[0]][PAGEINFO_DATETIME]) return 1;
	else if (pageinfo[a[0]][PAGEINFO_DATETIME] > pageinfo[b[0]][PAGEINFO_DATETIME]) return -1;
	else return SortCompare(a, b);
}

function sw_compare(a, b)
{
	if (a.charAt(0) == '-') 
		return 1;
	
	if (b.charAt(0) == '-') 
		return -1;
	
	return 0;
}

function pattern2regexp(pattern)
{
    pattern = pattern.replace(/\#/g, "\\#");
    pattern = pattern.replace(/\$/g, "\\$");
    pattern = pattern.replace(/\./g, "\\.");
    pattern = pattern.replace(/\*/g, "[\\d\\S]*");
    pattern = pattern.replace(/\?/g, ".?");
    return pattern;
}

function PrintHighlightDescription(line) 
{
	if (Highlighting == 0)
	{
		document.writeln(line);
		return;
	}
		
    res = " " + line + " ";
    for (i = 0; i < numwords; i++) {
        if (RegExpSearchWords[i] == "")
            continue;

        if (SearchAsSubstring == 1)
            res = res.replace(new RegExp("("+RegExpSearchWords[i]+")", "gi"), "[;:]$1[:;]");
        else
            res = res.replace(new RegExp("(\\W|^|\\b)("+RegExpSearchWords[i]+")(\\W|$|\\b)", "gi"), "$1[;:]$2[:;]$3");
    }
    // replace the marker text with the html text
    // this is to avoid finding previous <span>'ed text.
    res = res.replace(/\[;:\]/g, "<span class=\"highlight\">");
    res = res.replace(/\[:;\]/g, "</span>");
    document.writeln(res);
}

function PrintNumResults(num)
{
    if (num == 0)
        return STR_NO_RESULTS;
    else if (num == 1)
        return num + " " + STR_RESULT;
    else
        return num + " " + STR_RESULTS;
}

function AddParamToURL(url, paramStr)
{
	// add GET parameters to URL depending on 
	// whether there are any existing parameters
	if (url.indexOf("?") > -1)	
		return url + "&amp;" + paramStr;
	else		
		return url + "?" + paramStr;			
}

function SkipSearchWord(sw) {
    if (searchWords[sw] != "") {
        if (SkippedWords > 0)
            SkippedOutputStr += ", ";
        SkippedOutputStr += "\"<b>" + searchWords[sw] + "</b>\"";
        searchWords[sw] = "";
    }
}

function wordcasecmp(word1, word2) {
	if (word1 == word2)
		return 0;
	else
		return -1;	
}

function htmlspecialchars(query) {
	query = query.replace(/\&/g, "&#38;");
	query = query.replace(/\</g, "&#60;");
	query = query.replace(/\>/g, "&#62;");	
	query = query.replace(/\"/g, "&#34;");
	query = query.replace(/\'/g, "&#39;");
	return query;
}

function QueryEntities(query) {	
	query = query.replace(/\&/g, "&#38;");	
	query = query.replace(/\</g, "&#60;");
	query = query.replace(/\>/g, "&#62;");
	query = query.replace(/\'/g, "&#39;");	
	return query;
}

function FixQueryForAsianWords(query) {
	currCharType = 0;
	lastCharType = 0;	// 0 is normal, 1 is hiragana, 2 is katakana, 3 is "han"
	
	// check for hiragana/katakana splitting required
	newquery = "";
    for (i = 0; i < query.length; i++)
    {
    	ch = query.charAt(i);
    	chVal = query.charCodeAt(i);
    	
    	if (chVal >= 12352 && chVal <= 12447)
    		currCharType = 1;
    	else if (chVal >= 12448 && chVal <= 12543)
    		currCharType = 2;
    	else if (chVal >= 13312 && chVal <= 44031)
			currCharType = 3;
    	else
    		currCharType = 0;
    			    	
    	if (lastCharType != currCharType && ch != " ")
    		newquery += " ";	    	
    	lastCharType = currCharType;	    		
    	newquery += ch;
    }
    return newquery;
}

// ----------------------------------------------------------------------------
// Parameters initialisation (globals)
// ----------------------------------------------------------------------------

var query = getParam("zoom_query");
query = query.replace(/[\++]/g, " ");  // replace the '+' with spaces
SearchAsSubstring = (query == query.replace(/[\"+]/g, " "));
query = query.replace(/[\"+]/g, " ");

var per_page = parseInt(getParam("zoom_per_page"));
if (isNaN(per_page)) per_page = 10;

var page = parseInt(getParam("zoom_page"));
if (isNaN(page)) page = 1;

var andq = parseInt(getParam("zoom_and"));
if (isNaN(andq))
{
	if (typeof(DefaultToAnd) != "undefined" && DefaultToAnd == 1)
		andq = 1;
	else
		andq = 0;
}

var cat = getParamArray("zoom_cat[]");
if (cat.length == 0)
{
	cat[0] = parseInt(getParam("zoom_cat"));
	if (isNaN(cat))
		cat[0] = -1;	// search all categories
}
var num_zoom_cats = cat.length;	


// for sorting options. zero is default (relevance)
// 1 is sort by date (if date/time is available)
var sort = parseInt(getParam("zoom_sort"));
if (isNaN(sort)) sort = 0;

var SelfURL = "";
if (typeof(LinkBackURL) == "undefined")
{
    SelfURL = document.location.href;
    // strip off parameters and anchors
    var paramIndex;
    paramIndex = SelfURL.indexOf("?");    
    if (paramIndex > -1)
        SelfURL = SelfURL.substr(0, paramIndex);
    paramIndex = SelfURL.indexOf("#");
    if (paramIndex > -1)
        SelfURL = SelfURL.substr(0, paramIndex);        
}
else
    SelfURL = LinkBackURL;
// encode invalid URL characters
SelfURL = SelfURL.replace(/\</g, "&lt;");
SelfURL = SelfURL.replace(/\"/g, "&quot;");

var data = new Array();
var output = new Array();

target = "";
if (UseLinkTarget == 1)
    target = " target=\"" + LinkTarget + "\" ";

// ----------------------------------------------------------------------------
// Main search function starts here
// ----------------------------------------------------------------------------

function ZoomSearch() 
{