simple-jekyll-search.js

/*!
  * Simple-Jekyll-Search v1.7.2 (https://github.com/christian-fei/Simple-Jekyll-Search)
  * Copyright 2015-2018, Christian Fei
  * Licensed under the MIT License.
  */

(function(){
  /* globals ActiveXObject:false */

  'use strict'

  var _$JSONLoader_2 = {
    load: load
  }

  function load (location, callback) {
    var xhr = getXHR()
    xhr.open('GET', location, true)
    xhr.onreadystatechange = createStateChangeListener(xhr, callback)
    xhr.send()
  }

  function createStateChangeListener (xhr, callback) {
    return function () {
      if (xhr.readyState === 4 && xhr.status === 200) {
        try {
          callback(null, JSON.parse(xhr.responseText))
        } catch (err) {
          callback(err, null)
        }
      }
    }
  }

  function getXHR () {
    return window.XMLHttpRequest ? new window.XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP')
  }

  'use strict'

  var _$OptionsValidator_3 = function OptionsValidator (params) {
    if (!validateParams(params)) {
      throw new Error('-- OptionsValidator: required options missing')
    }

    if (!(this instanceof OptionsValidator)) {
      return new OptionsValidator(params)
    }

    var requiredOptions = params.required

    this.getRequiredOptions = function () {
      return requiredOptions
    }

    this.validate = function (parameters) {
      var errors = []
      requiredOptions.forEach(function (requiredOptionName) {
        if (typeof parameters[requiredOptionName] === 'undefined') {
          errors.push(requiredOptionName)
        }
      })
      return errors
    }

    function validateParams (params) {
      if (!params) {
        return false
      }
      return typeof params.required !== 'undefined' && params.required instanceof Array
    }
  }

  'use strict';

  function fuzzysearch (needle, haystack) {
    var tlen = haystack.length;
    var qlen = needle.length;
    if (qlen > tlen) {
      return false;
    }
    if (qlen === tlen) {
      return needle === haystack;
    }
    outer: for (var i = 0, j = 0; i < qlen; i++) {
      var nch = needle.charCodeAt(i);
      while (j < tlen) {
        if (haystack.charCodeAt(j++) === nch) {
          continue outer;
        }
      }
      return false;
    }
    return true;
  }

  var _$fuzzysearch_1 = fuzzysearch;

  'use strict'

  /* removed: var _$fuzzysearch_1 = require('fuzzysearch') */;

  var _$FuzzySearchStrategy_5 = new FuzzySearchStrategy()

  function FuzzySearchStrategy () {
    this.matches = function (string, crit) {
      return _$fuzzysearch_1(crit.toLowerCase(), string.toLowerCase())
    }
  }

  'use strict'

  var _$LiteralSearchStrategy_6 = new LiteralSearchStrategy()

  function LiteralSearchStrategy () {
    this.matches = function (str, crit) {
      if (!str) return false

      str = str.trim().toLowerCase()
      crit = crit.trim().toLowerCase()

      return crit.split(' ').filter(function (word) {
        return str.indexOf(word) >= 0
      }).length === crit.split(' ').length
    }
  }

  'use strict'

  var _$Repository_4 = {
    put: put,
    clear: clear,
    search: search,
    setOptions: setOptions
  }

  /* removed: var _$FuzzySearchStrategy_5 = require('./SearchStrategies/FuzzySearchStrategy') */;
  /* removed: var _$LiteralSearchStrategy_6 = require('./SearchStrategies/LiteralSearchStrategy') */;

  function NoSort () {
    return 0
  }

  var data = []
  var opt = {}

  opt.fuzzy = false
  opt.limit = 10
  opt.searchStrategy = opt.fuzzy ? _$FuzzySearchStrategy_5 : _$LiteralSearchStrategy_6
  opt.sort = NoSort

  function put (data) {
    if (isObject(data)) {
      return addObject(data)
    }
    if (isArray(data)) {
      return addArray(data)
    }
    return undefined
  }
  function clear () {
    data.length = 0
    return data
  }

  function isObject (obj) {
    return Boolean(obj) && Object.prototype.toString.call(obj) === '[object Object]'
  }

  function isArray (obj) {
    return Boolean(obj) && Object.prototype.toString.call(obj) === '[object Array]'
  }

  function addObject (_data) {
    data.push(_data)
    return data
  }

  function addArray (_data) {
    var added = []
    clear()
    for (var i = 0, len = _data.length; i < len; i++) {
      if (isObject(_data[i])) {
        added.push(addObject(_data[i]))
      }
    }
    return added
  }

  function search (crit) {
    if (!crit) {
      return []
    }
    return findMatches(data, crit, opt.searchStrategy, opt).sort(opt.sort)
  }

  function setOptions (_opt) {
    opt = _opt || {}

    opt.fuzzy = _opt.fuzzy || false
    opt.limit = _opt.limit || 10
    opt.searchStrategy = _opt.fuzzy ? _$FuzzySearchStrategy_5 : _$LiteralSearchStrategy_6
    opt.sort = _opt.sort || NoSort
  }

  function findMatches (data, crit, strategy, opt) {
    var matches = []
    for (var i = 0; i < data.length && matches.length < opt.limit; i++) {
      var match = findMatchesInObject(data[i], crit, strategy, opt)
      if (match) {
        matches.push(match)
      }
    }
    return matches
  }

  function findMatchesInObject (obj, crit, strategy, opt) {
    for (var key in obj) {
      if (!isExcluded(obj[key], opt.exclude) && strategy.matches(obj[key], crit)) {
        return obj
      }
    }
  }

  function isExcluded (term, excludedTerms) {
    var excluded = false
    excludedTerms = excludedTerms || []
    for (var i = 0, len = excludedTerms.length; i < len; i++) {
      var excludedTerm = excludedTerms[i]
      if (!excluded && new RegExp(term).test(excludedTerm)) {
        excluded = true
      }
    }
    return excluded
  }

  'use strict'

  var _$Templater_7 = {
    compile: compile,
    setOptions: __setOptions_7
  }

  var options = {}
  options.pattern = /\{(.*?)\}/g
  options.template = ''
  options.middleware = function () {}

  function __setOptions_7 (_options) {
    options.pattern = _options.pattern || options.pattern
    options.template = _options.template || options.template
    if (typeof _options.middleware === 'function') {
      options.middleware = _options.middleware
    }
  }

  function compile (data) {
    return options.template.replace(options.pattern, function (match, prop) {
      var value = options.middleware(prop, data[prop], options.template)
      if (typeof value !== 'undefined') {
        return value
      }
      return data[prop] || match
    })
  }

  'use strict'

  var _$utils_9 = {
    merge: merge,
    isJSON: isJSON
  }

  function merge (defaultParams, mergeParams) {
    var mergedOptions = {}
    for (var option in defaultParams) {
      mergedOptions[option] = defaultParams[option]
      if (typeof mergeParams[option] !== 'undefined') {
        mergedOptions[option] = mergeParams[option]
      }
    }
    return mergedOptions
  }

  function isJSON (json) {
    try {
      if (json instanceof Object && JSON.parse(JSON.stringify(json))) {
        return true
      }
      return false
    } catch (err) {
      return false
    }
  }

  var _$src_8 = {};
  (function (window) {
    'use strict'

    var options = {
      searchInput: null,
      resultsContainer: null,
      json: [],
      success: Function.prototype,
      searchResultTemplate: '<li><a href="{url}" title="{desc}">{title}</a></li>',
      templateMiddleware: Function.prototype,
      sortMiddleware: function () {
        return 0
      },
      noResultsText: 'No results found',
      limit: 10,
      fuzzy: false,
      exclude: []
    }

    var requiredOptions = ['searchInput', 'resultsContainer', 'json']

    /* removed: var _$Templater_7 = require('./Templater') */;
    /* removed: var _$Repository_4 = require('./Repository') */;
    /* removed: var _$JSONLoader_2 = require('./JSONLoader') */;
    var optionsValidator = _$OptionsValidator_3({
      required: requiredOptions
    })
    /* removed: var _$utils_9 = require('./utils') */;

    window.SimpleJekyllSearch = function (_options) {
      var errors = optionsValidator.validate(_options)
      if (errors.length > 0) {
        throwError('You must specify the following required options: ' + requiredOptions)
      }

      options = _$utils_9.merge(options, _options)

      _$Templater_7.setOptions({
        template: options.searchResultTemplate,
        middleware: options.templateMiddleware
      })

      _$Repository_4.setOptions({
        fuzzy: options.fuzzy,
        limit: options.limit,
        sort: options.sortMiddleware
      })

      if (_$utils_9.isJSON(options.json)) {
        initWithJSON(options.json)
      } else {
        initWithURL(options.json)
      }

      return {
        search: search
      }
    }

    function initWithJSON (json) {
      options.success(json)
      _$Repository_4.put(json)
      registerInput()
    }

    function initWithURL (url) {
      _$JSONLoader_2.load(url, function (err, json) {
        if (err) {
          throwError('failed to get JSON (' + url + ')')
        }
        initWithJSON(json)
      })
    }

    function emptyResultsContainer () {
      options.resultsContainer.innerHTML = ''
    }

    function appendToResultsContainer (text) {
      options.resultsContainer.innerHTML += text
    }

    function registerInput () {
      options.searchInput.addEventListener('keyup', function (e) {
        if (isWhitelistedKey(e.which)) {
          emptyResultsContainer()
          search(e.target.value)
        }
      })
    }

    function search (query) {
      if (isValidQuery(query)) {
        emptyResultsContainer()
        render(_$Repository_4.search(query), query)
      }
    }

    function render (results, query) {
      var len = results.length
      if (len === 0) {
        return appendToResultsContainer(options.noResultsText)
      }
      for (var i = 0; i < len; i++) {
        results[i].query = query
        appendToResultsContainer(_$Templater_7.compile(results[i]))
      }
    }

    function isValidQuery (query) {
      return query && query.length > 0
    }

    function isWhitelistedKey (key) {
      return [13, 16, 20, 37, 38, 39, 40, 91].indexOf(key) === -1
    }

    function throwError (message) {
      throw new Error('SimpleJekyllSearch --- ' + message)
    }
  })(window)

  }());