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// 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
//
var searchFunc = function(path, search_id, content_id) {
'use strict';
$.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: $( "url" , this).text()
};
}).get();
var $input = document.getElementById(search_id);
if (!$input) return;
var $resultContent = document.getElementById(content_id);
if ($("#local-search-input").length > 0) {
$input.addEventListener('input', function () {
var str = '<ul class=\"search-result-list\">';
var keywords = this.value.trim().toLowerCase().split(/[\s\-]+/);
$resultContent.innerHTML = "";
if (this.value.trim().length <= 0) {
return;
}
// perform local searching
datas.forEach(function (data) {
var isMatch = true;
var content_index = [];
if (!data.title || data.title.trim() === '') {
data.title = "Untitled";
}
var data_title = data.title.trim().toLowerCase();
var data_content = data.content.trim().replace(/<[^>]+>/g, "").toLowerCase();
var data_url = data.url;
var index_title = -1;
var index_content = -1;
var first_occur = -1;
// only match artiles with not empty contents
if (data_content !== '') {
keywords.forEach(function (keyword, i) {
index_title = data_title.indexOf(keyword);
index_content = data_content.indexOf(keyword);
if (index_title < 0 && index_content < 0) {
isMatch = false;
} else {
if (index_content < 0) {
index_content = 0;
}
if (i == 0) {
first_occur = index_content;
}
// content_index.push({index_content:index_content, keyword_len:keyword_len});
}
});
} else {
isMatch = false;
}
// show search results
if (isMatch) {
str += "<li><a href='" + data_url + "' class='search-result-title'>" + data_title + "</a>";
var content = data.content.trim().replace(/<[^>]+>/g, "");
if (first_occur >= 0) {
// cut out 100 characters
var start = first_occur - 20;
var end = first_occur + 80;
if (start < 0) {
start = 0;
}
if (start == 0) {
end = 100;
}
if (end > content.length) {
end = content.length;
}
var match_content = content.substr(start, end);
// highlight all keywords
keywords.forEach(function (keyword) {
var regS = new RegExp(keyword, "gi");
match_content = match_content.replace(regS, "<em class=\"search-keyword\">" + keyword + "</em>");
});
str += "<p class=\"search-result\">" + match_content + "...</p>"
}
str += "</li>";
}
});
str += "</ul>";
$resultContent.innerHTML = str;
});
}
}
});
}