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Rewrite with ES6 #19
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commit
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1 changed files with 50 additions and 37 deletions
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@ -3,13 +3,21 @@ let lunrIndex
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let lunrResult
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let pagesIndex
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/**
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* A function for splitting a string into bigram.
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*
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* @static
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* @param {?(string|object|object[])} obj - The object to convert into tokens
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* @param {?object} metadata - Optional metadata to associate with every token
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* @returns {lunr.Token[]}
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*/
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const bigramTokeniser = (obj, metadata) => {
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if (obj == null || obj === undefined) {
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return []
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}
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if (Array.isArray(obj)) {
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return obj.map(function (t) {
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return obj.map((t) => {
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return new lunr.Token(
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lunr.utils.asString(t).toLowerCase(),
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lunr.utils.clone(metadata)
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@ -17,11 +25,11 @@ const bigramTokeniser = (obj, metadata) => {
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})
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}
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var str = obj.toString().trim().toLowerCase()
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var tokens = []
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let str = obj.toString().trim().toLowerCase()
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let tokens = []
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for (var i = 0; i <= str.length - 2; i++) {
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var tokenMetadata = lunr.utils.clone(metadata) || {}
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for (let i = 0; i <= str.length - 2; i++) {
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const tokenMetadata = lunr.utils.clone(metadata) || {}
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tokenMetadata['position'] = [i, i + 2]
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tokenMetadata['index'] = tokens.length
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tokens.push(
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@ -31,18 +39,23 @@ const bigramTokeniser = (obj, metadata) => {
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)
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)
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}
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return tokens
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}
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var queryNgramSeparator = function (query) {
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var str = query.toString().trim().toLowerCase()
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var tokens = []
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/**
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* A function for separating a string into bigram and join it with space.
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*
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* @static
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* @param {?string} query - The string to convert into tokens
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* @returns {string}
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*/
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const queryNgramSeparator = (query) => {
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const str = query.toString().trim().toLowerCase()
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const tokens = []
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for (var i = 0; i <= str.length - 2; i++) {
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for (let i = 0; i <= str.length - 2; i++) {
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tokens.push(str.slice(i, i + 2))
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}
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return tokens.join(' ')
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}
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@ -50,34 +63,34 @@ var queryNgramSeparator = function (query) {
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* Preparation for using lunr.js
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*/
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const initLunr = () => {
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$.getJSON('index.json').done(function (index) {
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$.getJSON('index.json').done((index) => {
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pagesIndex = index
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lunrIndex = lunr(function () {
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lunrIndex = lunr(() => {
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this.tokenizer = bigramTokeniser
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this.pipeline.reset()
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this.ref('ref')
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this.field('title', { boost: 10 })
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this.field('body')
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this.metadataWhitelist = ['position']
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for (var page of pagesIndex) {
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for (let page of pagesIndex) {
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this.add(page)
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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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}).fail((jqxhr, textStatus, error) => {
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const err = textStatus + ', ' + error
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console.error('Error getting Hugo index flie:', err)
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})
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}
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/**
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* Searching pages using lunr
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* @param {String} query Query string for searching
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* @return {Object[]} Array of search results
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* @param {String} query - Query string for searching
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* @return {Object[]} - Array of search results
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*/
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function search (query) {
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const search = (query) => {
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lunrResult = lunrIndex.search(queryNgramSeparator(query))
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return lunrResult.map(function (result) {
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return pagesIndex.filter(function (page) {
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return lunrResult.map((result) => {
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return pagesIndex.filter((page) => {
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return page.ref === result.ref
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})[0]
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})
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@ -86,17 +99,17 @@ function search (query) {
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/**
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* Setup UI for Search
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*/
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function initUI () {
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const initUI = () => {
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// Clear query when clear icon is clicked
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$('#searchBoxIcon').click(function () {
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$('#searchBoxIcon').click(() => {
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$('#searchBoxInput').val('')
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$('#searchBoxInput').trigger('keyup')
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})
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// Event when chenging query
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$('#searchBoxInput').keyup(function () {
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var $searchResults = $('#searchResults')
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var query = $(this).val()
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$('#searchBoxInput').keyup(() => {
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const $searchResults = $('#searchResults')
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const query = $(this).val()
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// Icon switching
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if (query.length) {
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@ -126,11 +139,11 @@ function initUI () {
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* Rendering search results
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* @param {Object[]} results Array of search results
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*/
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function renderResults (results) {
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var $searchResults = $('#searchResults')
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var query = $('#searchBoxInput').val()
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var BODY_LENGTH = 100
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var MAX_PAGES = 10
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const renderResults = (results) => {
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const $searchResults = $('#searchResults')
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const query = $('#searchBoxInput').val()
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const BODY_LENGTH = 100
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const MAX_PAGES = 10
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// Clear search result
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$searchResults.empty()
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@ -142,11 +155,11 @@ function renderResults (results) {
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}
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// Only show the ten first results
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results.slice(0, MAX_PAGES).forEach(function (result, idx) {
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var $searchResultPage = $('<div class="searchResultPage">')
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var metadata = lunrResult[idx].matchData.metadata
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var matchPosition = metadata[Object.keys(metadata)[0]].body ? metadata[Object.keys(metadata)[0]].body.position[0][0] : 0
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var bodyStartPosition = (matchPosition - (BODY_LENGTH / 2) > 0) ? matchPosition - (BODY_LENGTH / 2) : 0
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results.slice(0, MAX_PAGES).forEach((result, idx) => {
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const $searchResultPage = $('<div class="searchResultPage">')
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const metadata = lunrResult[idx].matchData.metadata
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const matchPosition = metadata[Object.keys(metadata)[0]].body ? metadata[Object.keys(metadata)[0]].body.position[0][0] : 0
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const bodyStartPosition = (matchPosition - (BODY_LENGTH / 2) > 0) ? matchPosition - (BODY_LENGTH / 2) : 0
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$searchResultPage.append('<a class="searchResultTitle" href="' + result.ref + '">' + result.title + '</a>')
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@ -160,6 +173,6 @@ function renderResults (results) {
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initLunr()
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$(function () {
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$(() => {
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initUI()
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})
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