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80 lines
2.0 KiB
80 lines
2.0 KiB
(function () {
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importScripts('lunr.min.js');
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var lunrIndex;
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var stopWords = null;
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var searchData = {};
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lunr.tokenizer.separator = /[\s\-\.]+/;
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var stopWordsRequest = new XMLHttpRequest();
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stopWordsRequest.open('GET', '../search-stopwords.json');
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stopWordsRequest.onload = function () {
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if (this.status != 200) {
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return;
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}
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stopWords = JSON.parse(this.responseText);
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buildIndex();
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}
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stopWordsRequest.send();
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var searchDataRequest = new XMLHttpRequest();
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searchDataRequest.open('GET', '../index.json');
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searchDataRequest.onload = function () {
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if (this.status != 200) {
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return;
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}
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searchData = JSON.parse(this.responseText);
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buildIndex();
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postMessage({ e: 'index-ready' });
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}
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searchDataRequest.send();
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onmessage = function (oEvent) {
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var q = oEvent.data.q;
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var hits = lunrIndex.search(q);
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var results = [];
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hits.forEach(function (hit) {
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var item = searchData[hit.ref];
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results.push({ 'href': item.href, 'title': item.title, 'keywords': item.keywords });
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});
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postMessage({ e: 'query-ready', q: q, d: results });
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}
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function buildIndex() {
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if (stopWords !== null && !isEmpty(searchData)) {
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lunrIndex = lunr(function () {
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this.pipeline.remove(lunr.stopWordFilter);
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this.ref('href');
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this.field('title', { boost: 50 });
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this.field('keywords', { boost: 20 });
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for (var prop in searchData) {
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if (searchData.hasOwnProperty(prop)) {
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this.add(searchData[prop]);
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}
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}
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var docfxStopWordFilter = lunr.generateStopWordFilter(stopWords);
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lunr.Pipeline.registerFunction(docfxStopWordFilter, 'docfxStopWordFilter');
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this.pipeline.add(docfxStopWordFilter);
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this.searchPipeline.add(docfxStopWordFilter);
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});
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}
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}
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function isEmpty(obj) {
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if(!obj) return true;
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for (var prop in obj) {
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if (obj.hasOwnProperty(prop))
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return false;
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}
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return true;
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}
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})();
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