mirror of
https://github.com/McShelby/hugo-theme-relearn.git
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Merge branch 'improve-search' of git://github.com/helfper/hugo-theme-relearn into helfper-improve-search
This commit is contained in:
commit
60920f6e20
2 changed files with 46 additions and 38 deletions
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@ -43,4 +43,6 @@
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.autocomplete-suggestion > .context {
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font-size: 12px;
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overflow: hidden;
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text-overflow: ellipsis;
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}
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@ -1,9 +1,5 @@
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var lunrIndex, pagesIndex;
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function endsWith(str, suffix) {
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return str.indexOf(suffix, str.length - suffix.length) !== -1;
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}
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// Initialize lunrjs using our generated index file
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function initLunr() {
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// First retrieve the index file
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@ -13,75 +9,85 @@ function initLunr() {
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// Set up lunrjs by declaring the fields we use
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// Also provide their boost level for the ranking
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lunrIndex = lunr(function() {
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this.ref("uri");
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this.ref('index');
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this.field('title', {
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boost: 15
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boost: 15
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});
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this.field('tags', {
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boost: 10
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boost: 10
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});
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this.field("content", {
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boost: 5
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this.field('content', {
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boost: 5
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});
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this.pipeline.remove(lunr.stemmer);
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this.searchPipeline.remove(lunr.stemmer);
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// Feed lunr with each file and let lunr actually index them
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pagesIndex.forEach(function(page) {
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this.add(page);
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pagesIndex.forEach(function(page, idx) {
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page.index = idx;
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this.add(page);
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}, this);
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})
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})
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.fail(function(jqxhr, textStatus, error) {
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var err = textStatus + ", " + error;
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console.error("Error getting Hugo index file:", err);
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var err = textStatus + ', ' + error;
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console.error('Error getting Hugo index file:', err);
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});
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}
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/**
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* Trigger a search in lunr and transform the result
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*
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* @param {String} query
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* @param {String} term
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* @return {Array} results
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*/
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function search(queryTerm) {
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function search(term) {
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// Find the item in our index corresponding to the lunr one to have more info
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var searchTerm = queryTerm.match(/\w+/g).map(word => word+"^100"+" "+word+"*^10"+" "+"*"+word+"^10"+" "+word+"~2^1").join(" ");
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return lunrIndex.search(searchTerm).map(function(result) {
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return pagesIndex.filter(function(page) {
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return page.uri === result.ref;
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})[0];
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});
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// Remove Lunr special search characters: https://lunrjs.com/guides/searching.html
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var searchTerm = lunr.tokenizer(term.replace(/[*:^~+-]/, ' ')).flatMap(token => searchPatterns(token.str)).join(' ');
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return !searchTerm ? [] : lunrIndex.search(searchTerm).map(function(result) {
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return { index: result.ref, matches: Object.keys(result.matchData.metadata) }
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});
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}
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function searchPatterns(word) {
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return [
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word + '^100',
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word + '*^10',
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'*' + word + '^10',
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word + '~' + Math.floor(word.length / 4) + '^1' // allow 1 in 4 letters to have a typo
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];
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}
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// Let's get started
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initLunr();
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$( document ).ready(function() {
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$(function() {
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var searchList = new autoComplete({
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/* selector for the search box element */
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selector: $("#search-by").get(0),
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selector: $('#search-by').get(0),
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/* source is the callback to perform the search */
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source: function(term, response) {
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response(search(term));
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},
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/* renderItem displays individual search results */
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renderItem: function(item, term) {
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var page = pagesIndex[item.index];
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var numContextWords = 2;
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var text = item.content.match(
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"(?:\\s?(?:[\\w]+)\\s?){0,"+numContextWords+"}" +
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term.trim()+"(?:\\s?(?:[\\w]+)\\s?){0,"+numContextWords+"}");
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item.context = text;
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var divcontext = document.createElement("div");
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divcontext.className = "context";
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divcontext.innerText = (item.context || '');
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var divsuggestion = document.createElement("div");
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divsuggestion.className = "autocomplete-suggestion";
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divsuggestion.setAttribute("data-term", term);
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divsuggestion.setAttribute("data-title", item.title);
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divsuggestion.setAttribute("data-uri", baseUri + item.uri);
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divsuggestion.setAttribute("data-context", item.context);
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divsuggestion.innerText = '» ' + item.title;
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var contextPattern = '(?:\\S+ +){0,' + numContextWords + '}\\S*\\b(?:' +
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item.matches.map(match => match.replace(/\W/g, '\\$&')).join('|') +
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')\\b\\S*(?: +\\S+){0,' + numContextWords + '}';
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var context = page.content.match(new RegExp(contextPattern, 'i'));
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var divcontext = document.createElement('div');
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divcontext.className = 'context';
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divcontext.innerText = (context || '');
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var divsuggestion = document.createElement('div');
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divsuggestion.className = 'autocomplete-suggestion';
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divsuggestion.setAttribute('data-term', term);
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divsuggestion.setAttribute('data-title', page.title);
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divsuggestion.setAttribute('data-uri', baseUri + page.uri);
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divsuggestion.setAttribute('data-context', context);
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divsuggestion.innerText = '» ' + page.title;
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divsuggestion.appendChild(divcontext);
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return divsuggestion.outerHTML;
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},
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@ -93,6 +99,6 @@ $( document ).ready(function() {
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// JavaScript-autoComplete only registers the focus event when minChars is 0 which doesn't make sense, let's do it ourselves
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// https://github.com/Pixabay/JavaScript-autoComplete/blob/master/auto-complete.js#L191
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var selector = $("#search-by").get(0);
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var selector = $('#search-by').get(0);
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$(selector).focus(selector.focusHandler);
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});
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