98 lines
3.0 KiB
JavaScript
98 lines
3.0 KiB
JavaScript
/*!
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* Lunr languages, `Thai` language
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* https://github.com/MihaiValentin/lunr-languages
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*
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* Copyright 2017, Keerati Thiwanruk
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* http://www.mozilla.org/MPL/
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*/
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/*!
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* based on
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* Snowball JavaScript Library v0.3
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* http://code.google.com/p/urim/
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* http://snowball.tartarus.org/
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*
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* Copyright 2010, Oleg Mazko
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* http://www.mozilla.org/MPL/
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*/
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/**
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* export the module via AMD, CommonJS or as a browser global
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* Export code from https://github.com/umdjs/umd/blob/master/returnExports.js
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*/
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(function(root, factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(factory)
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} else if (typeof exports === 'object') {
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/**
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* Node. Does not work with strict CommonJS, but
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* only CommonJS-like environments that support module.exports,
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* like Node.
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*/
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module.exports = factory()
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} else {
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// Browser globals (root is window)
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factory()(root.lunr);
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}
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}(this, function() {
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/**
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* Just return a value to define the module export.
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* This example returns an object, but the module
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* can return a function as the exported value.
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*/
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return function(lunr) {
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/* throw error if lunr is not yet included */
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if ('undefined' === typeof lunr) {
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throw new Error('Lunr is not present. Please include / require Lunr before this script.');
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}
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/* throw error if lunr stemmer support is not yet included */
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if ('undefined' === typeof lunr.stemmerSupport) {
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throw new Error('Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script.');
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}
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/*
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Thai tokenization is the same to Japanense, which does not take into account spaces.
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So, it uses the same logic to assign tokenization function due to different Lunr versions.
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*/
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var isLunr2 = lunr.version[0] == "2";
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/* register specific locale function */
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lunr.th = function() {
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this.pipeline.reset();
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this.pipeline.add(
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/*lunr.th.stopWordFilter,*/
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lunr.th.trimmer
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);
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if (isLunr2) { // for lunr version 2.0.0
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this.tokenizer = lunr.th.tokenizer;
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} else {
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if (lunr.tokenizer) { // for lunr version 0.6.0
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lunr.tokenizer = lunr.th.tokenizer;
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}
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if (this.tokenizerFn) { // for lunr version 0.7.0 -> 1.0.0
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this.tokenizerFn = lunr.th.tokenizer;
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}
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}
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};
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/* lunr trimmer function */
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lunr.th.wordCharacters = "[\u0e00-\u0e7f]";
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lunr.th.trimmer = lunr.trimmerSupport.generateTrimmer(lunr.th.wordCharacters);
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lunr.Pipeline.registerFunction(lunr.th.trimmer, 'trimmer-th');
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var segmenter = lunr.wordcut;
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segmenter.init();
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lunr.th.tokenizer = function (obj) {
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//console.log(obj);
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if (!arguments.length || obj == null || obj == undefined) return []
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if (Array.isArray(obj)) return obj.map(function (t) { return isLunr2 ? new lunr.Token(t) : t })
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var str = obj.toString().replace(/^\s+/, '');
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return segmenter.cut(str).split('|');
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}
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};
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}))
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