139 lines
4.9 KiB
JavaScript
139 lines
4.9 KiB
JavaScript
// A local search script with the help of
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// [hexo-generator-search](https://github.com/PaicHyperionDev/hexo-generator-search)
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// Copyright (C) 2015
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// Joseph Pan <http://github.com/wzpan>
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// Shuhao Mao <http://github.com/maoshuhao>
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// 02110-1301 USA
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//
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// Modified by:
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// Pieter Robberechts <http://github.com/probberechts>
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/*exported searchFunc*/
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var searchFunc = function(path, filter, wrapperId, searchId, contentId) {
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function getAllCombinations(keywords) {
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var i, j, result = [];
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for (i = 0; i < keywords.length; i++) {
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for (j = i + 1; j < keywords.length + 1; j++) {
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result.push(keywords.slice(i, j).join(" "));
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}
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}
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return result;
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}
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$.ajax({
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url: path,
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dataType: "json",
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success: function(jsonResponse) {
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var datas = jsonResponse;
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var $input = document.getElementById(searchId);
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if (!$input) { return; }
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var $resultContent = document.getElementById(contentId);
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var $wrapper = document.getElementById(wrapperId);
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$input.addEventListener("input", function(){
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var resultList = [];
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var keywords = getAllCombinations(this.value.trim().toLowerCase().split(" "))
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.sort(function(a,b) { return b.split(" ").length - a.split(" ").length; });
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$resultContent.innerHTML = "";
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if (this.value.trim().length <= 0) {
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$wrapper.setAttribute('searching', 'false');
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return;
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}
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$wrapper.setAttribute('searching', 'true');
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// perform local searching
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datas.forEach(function(data) {
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if (!data.content?.trim().length) { return }
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var matches = 0;
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if (filter && !data.path.includes(filter)) { return }
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var dataTitle = data.title?.trim() || 'Untitled';
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var dataTitleLowerCase = dataTitle.toLowerCase();
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var dataContent = data.content;
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var dataContentLowerCase = dataContent.toLowerCase();
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var dataUrl = data.path;
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var indexTitle = -1;
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var indexContent = -1;
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var firstOccur = -1;
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// only match artiles with not empty contents
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if (dataContent !== "") {
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keywords.forEach(function(keyword) {
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indexTitle = dataTitleLowerCase.indexOf(keyword);
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indexContent = dataContentLowerCase.indexOf(keyword);
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if( indexTitle >= 0 || indexContent >= 0 ){
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matches += 1;
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if (indexContent < 0) {
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indexContent = 0;
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}
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if (firstOccur < 0) {
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firstOccur = indexContent;
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}
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}
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});
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}
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// show search results
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if (matches > 0) {
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var searchResult = {};
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searchResult.rank = matches;
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searchResult.str = "<li><a href='"+ dataUrl +"'><span class='search-result-title'>"+ dataTitle +"</span>";
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if (firstOccur >= 0) {
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// cut out 100 characters
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var start = firstOccur - 20;
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var end = firstOccur + 80;
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if(start < 0){
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start = 0;
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}
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if(start == 0){
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end = 100;
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}
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if(end > dataContent.length){
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end = dataContent.length;
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}
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var matchContent = dataContent.substring(start, end);
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// highlight all keywords
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var regS = new RegExp(keywords.join("|"), "gi");
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matchContent = matchContent.replace(regS, function(keyword) {
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return "<span class=\"search-keyword\">"+keyword+"</span>";
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});
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searchResult.str += "<p class=\"search-result-content\">" + matchContent +"...</p>";
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}
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searchResult.str += "</a></li>";
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resultList.push(searchResult);
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}
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});
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if (resultList.length) {
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resultList.sort(function(a, b) {
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return b.rank - a.rank;
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});
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var result ="<ul class=\"search-result-list\">";
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for (var i = 0; i < resultList.length; i++) {
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result += resultList[i].str;
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}
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result += "</ul>";
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$resultContent.innerHTML = result;
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}
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});
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}
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});
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};
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