Current File : //www/specpages-backup/themes/cactus/source/js/search.js
// A local search script with the help of
// [hexo-generator-search](https://github.com/PaicHyperionDev/hexo-generator-search)
// Copyright (C) 2015
// Joseph Pan <http://github.com/wzpan>
// Shuhao Mao <http://github.com/maoshuhao>
// 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.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301 USA
//
// Modified by:
// Pieter Robberechts <http://github.com/probberechts>
/*exported searchFunc*/
var searchFunc = function(path, searchId, contentId) {
function stripHtml(html) {
html = html.replace(/<style([\s\S]*?)<\/style>/gi, "");
html = html.replace(/<script([\s\S]*?)<\/script>/gi, "");
html = html.replace(/<figure([\s\S]*?)<\/figure>/gi, "");
html = html.replace(/<\/div>/ig, "\n");
html = html.replace(/<\/li>/ig, "\n");
html = html.replace(/<li>/ig, " * ");
html = html.replace(/<\/ul>/ig, "\n");
html = html.replace(/<\/p>/ig, "\n");
html = html.replace(/<br\s*[\/]?>/gi, "\n");
html = html.replace(/<[^>]+>/ig, "");
return html;
}
function getAllCombinations(keywords) {
var i, j, result = [];
for (i = 0; i < keywords.length; i++) {
for (j = i + 1; j < keywords.length + 1; j++) {
result.push(keywords.slice(i, j).join(" "));
}
}
return result;
}
$.ajax({
url: path,
dataType: "xml",
success: function(xmlResponse) {
// get the contents from search data
var datas = $("entry", xmlResponse).map(function() {
return {
title: $("title", this).text(),
content: $("content", this).text(),
url: $("link", this).attr("href")
};
}).get();
var $input = document.getElementById(searchId);
if (!$input) { return; }
var $resultContent = document.getElementById(contentId);
$input.addEventListener("input", function(){
var resultList = [];
var keywords = getAllCombinations(this.value.trim().toLowerCase().split(" "))
.sort(function(a,b) { return b.split(" ").length - a.split(" ").length; });
$resultContent.innerHTML = "";
if (this.value.trim().length <= 0) {
return;
}
// perform local searching
datas.forEach(function(data) {
var matches = 0;
if (!data.title || data.title.trim() === "") {
data.title = "Untitled";
}
var dataTitle = data.title.trim().toLowerCase();
var dataContent = stripHtml(data.content.trim());
var dataUrl = data.url;
var indexTitle = -1;
var indexContent = -1;
var firstOccur = -1;
// only match artiles with not empty contents
if (dataContent !== "") {
keywords.forEach(function(keyword) {
indexTitle = dataTitle.indexOf(keyword);
indexContent = dataContent.indexOf(keyword);
if( indexTitle >= 0 || indexContent >= 0 ){
matches += 1;
if (indexContent < 0) {
indexContent = 0;
}
if (firstOccur < 0) {
firstOccur = indexContent;
}
}
});
}
// show search results
if (matches > 0) {
var searchResult = {};
searchResult.rank = matches;
searchResult.str = "<li><a href='"+ dataUrl +"' class='search-result-title'>"+ dataTitle +"</a>";
if (firstOccur >= 0) {
// cut out 100 characters
var start = firstOccur - 20;
var end = firstOccur + 80;
if(start < 0){
start = 0;
}
if(start == 0){
end = 100;
}
if(end > dataContent.length){
end = dataContent.length;
}
var matchContent = dataContent.substr(start, end);
// highlight all keywords
var regS = new RegExp(keywords.join("|"), "gi");
matchContent = matchContent.replace(regS, function(keyword) {
return "<em class=\"search-keyword\">"+keyword+"</em>";
});
searchResult.str += "<p class=\"search-result\">" + matchContent +"...</p>";
}
searchResult.str += "</li>";
resultList.push(searchResult);
}
});
resultList.sort(function(a, b) {
return b.rank - a.rank;
});
var result ="<ul class=\"search-result-list\">";
for (var i = 0; i < resultList.length; i++) {
result += resultList[i].str;
}
result += "</ul>";
$resultContent.innerHTML = result;
});
}
});
};
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