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authorSamy Pessé <samypesse@gmail.com>2015-01-19 09:47:36 +0100
committerSamy Pessé <samypesse@gmail.com>2015-01-19 09:47:36 +0100
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parent80432161708357bdcf0e00533d9e6d327636dab6 (diff)
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-rw-r--r--lib/generate/site/glossary_indexer.js101
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diff --git a/lib/generate/site/glossary_indexer.js b/lib/generate/site/glossary_indexer.js
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--- a/lib/generate/site/glossary_indexer.js
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-var _ = require("lodash");
-var kramed = require('kramed');
-var textRenderer = require('kramed-text-renderer');
-
-var entryId = require('../../parse/glossary').entryId;
-
-
-function Indexer(glossary) {
- if(!(this instanceof Indexer)) {
- return new Indexer(glossary);
- }
-
- _.bindAll(this);
-
- this.glossary = glossary || [];
-
- this.glossaryTerms = _.pluck(this.glossary, "id");
-
- // Regex for searching for terms through body
- this.termsRegex = new RegExp(
- // Match any of the terms
- "("+
- this.glossaryTerms.map(regexEscape).join('|') +
- ")",
-
- // Flags
- "gi"
- );
-
- // page url => terms
- this.idx = {
- /*
- "a/b.html": ["one word", "second word"]
- */
- };
-
- // term => page urls
- this.invertedIdx = {
- /*
- "word1": ["page1.html", "page2.html"]
- */
- };
-
- // Use text renderer
- this.renderer = textRenderer();
-}
-
-Indexer.prototype.text = function(nodes) {
- // Copy section
- var section = _.toArray(nodes);
-
- // kramed's Render expects this, we don't use it yet
- section.links = {};
-
- var options = _.extend({}, kramed.defaults, {
- renderer: this.renderer
- });
-
- return kramed.parser(section, options);
-};
-
-// Add page to glossary index
-Indexer.prototype.add = function(sections, url) {
- if(!(this.glossary && this.glossary.length > 0)) {
- return;
- }
-
- var textblob =
- _.where(sections, { type: 'normal' })
- .map(this.text)
- .join('\n');
-
- var matches = _(textblob.match(this.termsRegex) || [])
- .map(entryId)
- .uniq()
- .value();
-
- // Add idx for book
- this.idx[url] = matches;
-
- // Add to inverted idx
- matches.forEach(function(match) {
- if(!this.invertedIdx[match]) {
- this.invertedIdx[match] = [];
- }
- this.invertedIdx[match].push(url);
- }.bind(this));
-};
-
-// Dump index as a string
-Indexer.prototype.dump = function() {
- return JSON.stringify(this.idx);
-};
-
-
-function regexEscape(s) {
- return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
-}
-
-// Exports
-module.exports = Indexer;