tourism-wxapp/node_modules/foodoc/template/utils/lunrHelper.js

var lunr = require('lunr'),
	cheerio = require('cheerio'),
	template = require('./template'),
	sanitizeHtml = require('sanitize-html'),
	path = require('jsdoc/path'),
	fs = require('jsdoc/fs'),
	helper = require('jsdoc/util/templateHelper');

var store = exports.store = {};
var index = exports.index = lunr(function(){
	this.field('longname', {boost: 1000});
	this.field('name', {boost: 500});
	this.field('tags', {boost: 300});
	this.field('kind', {boost: 110});
	this.field('title', {boost: 100});
	this.field('summary', {boost: 70});
	this.field('description', {boost: 50});
	this.field('body');
	this.ref('id');
});

var sanitize = function(html){
	if (typeof html !== 'string') return void 0;
	return sanitizeHtml(html, {allowedTags: [], allowedAttributes: []}).replace(/\s+/g, ' ').trim();
};

var _variations = function(parts){
	var result = [];
	result.push(parts.join('.'));
	if (parts.length > 1){
		parts.shift();
		result.push(_variations(parts));
	} else if (parts.length === 1){
		var instance = parts[0].indexOf('#');
		if (instance !== -1){
			result.push(parts[0].substr(instance + 1));
		}
	}
	return result.join(' ');
};

var variations = function(longname){
	if (typeof longname != 'string' || longname === '') return '';
	return _variations(longname.split('.'));
};

var tags = function(doclet){
	var result = [];
	if (doclet.longname && doclet.longname !== ''){
		result.push(variations(doclet.longname));
	}
	return result.join(' ');
};

var parseBody = function(html){
	if (!html || typeof html !== 'string') return;
	var $ = cheerio.load(html);
	return $('#main').text().replace(/\s+/g, ' ').trim();
};

var add = exports.add = function(doclet, html){
	var id = helper.longnameToUrl[doclet.longname];
	index.add(store[id] = {
		"id": id,
		"kind": doclet.kind,
		"title": doclet.pageTitle,
		"longname": doclet.longname,
		"name": doclet.name,
		"tags": tags(doclet),
		"summary": sanitize(helper.resolveLinks(doclet.summary)),
		"description": sanitize(helper.resolveLinks(doclet.classdesc || doclet.description)),
		"body": parseBody(html)
	});
	if (doclet.kind === 'class' || doclet.kind === 'namespace'){
		doclet.symbols.member.forEach(function(member){
			add(member);
		});
		doclet.symbols.function.forEach(function(fn){
			add(fn);
		});
		doclet.symbols.typedef.forEach(function(typedef){
			add(typedef);
		});
	}
};

exports.writeFilesSync = function(pretty){
	var jsonFile = path.join(template.config.dir.output, 'js/lunr-data.json'),
		dataFile = path.join(template.config.dir.output, 'js/lunr-data.js'),
		data = {index: index, store: store},
		json = pretty ? JSON.stringify(data, null, 2) : JSON.stringify(data);
	fs.writeFileSync(jsonFile, json, "utf8");
	fs.writeFileSync(dataFile, "window.lunrData = " + json + ";", "utf8");
};