// 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", dataType: "json", //success: function(xmlResponse) { success: function(datas) { // 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 dataTitleLowerCase = dataTitle.toLowerCase(); var dataContent = stripHtml(data.content.trim()); var dataContentLowerCase = dataContent.toLowerCase(); 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 = dataTitleLowerCase.indexOf(keyword); indexContent = dataContentLowerCase.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.substring(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); } }); if (resultList.length) { 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>"; $resultContent.innerHTML = result; } }); } }); };
最终项目的_config.yml
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search: path: search.json field: post content: true format: html limit: 10000
// http://stackoverflow.com/questions/14480345/how-to-get-the-nth-occurrence-in-a-string functiongetPosition(str, m, i) { return str.split(m, i).join(m).length; }
hexo.extend.filter.register('after_post_render', function(data){ var config = hexo.config; if(config.post_asset_folder){ var link = data.permalink; var beginPos = getPosition(link, '/', 3) + 1; var appendLink = ''; // In hexo 3.1.1, the permalink of "about" page is like ".../about/index.html". // if not with index.html endpos = link.lastIndexOf('.') + 1 support hexo-abbrlink if(/.*\/index\.html$/.test(link)) { // when permalink is end with index.html, for example 2019/02/20/xxtitle/index.html // image in xxtitle/ will go to xxtitle/index/ appendLink = 'index/'; var endPos = link.lastIndexOf('/'); } else { var endPos = link.lastIndexOf('.'); } link = link.substring(beginPos, endPos) + '/' + appendLink;
var toprocess = ['excerpt', 'more', 'content']; for(var i = 0; i < toprocess.length; i++){ var key = toprocess[i];
$('img').each(function(){ if ($(this).attr('src')){ // For windows style path, we replace '\' to '/'. var src = $(this).attr('src').replace('\\', '/'); if(!(/http[s]*.*|\/\/.*/.test(src) || /^\s+\//.test(src) || /^\s*\/uploads|images1\//.test(src))) { // For "about" page, the first part of "src" can't be removed. // In addition, to support multi-level local directory. var linkArray = link.split('/').filter(function(elem){ return elem != ''; }); var srcArray = src.split('/').filter(function(elem){ return elem != '' && elem != '.'; }); if(srcArray.length > 1) srcArray.shift(); src = srcArray.join('/');