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var _ = require('lodash');
var cheerio = require('cheerio');
var domSerializer = require('dom-serializer');
var slug = require('github-slugid');
var Promise = require('../utils/promise');
// Render a cheerio DOM as html
function renderDOM($, dom, options) {
if (!dom && $._root && $._root.children) {
dom = $._root.children;
}
options = options|| dom.options || $._options;
return domSerializer(dom, options);
}
function HTMLPipeline(htmlString, opts) {
_.bindAll(this);
this.opts = _.defaults(opts || {}, {
convertImages: true
});
this.$ = cheerio.load(htmlString, {
// We should parse html without trying to normalize too much
xmlMode: false,
// SVG need some attributes to use uppercases
lowerCaseAttributeNames: false,
lowerCaseTags: false
});
}
// Add ID to headings
HTMLPipeline.prototype.addHeadingIDs = function() {
var that = this;
this.$('h1,h2,h3,h4,h5,h6').each(function() {
// Already has an ID?
if (that.$(this).attr('id')) return;
that.$(this).attr('id', slug(that.$(this).text()));
});
};
// Write content to the pipeline
HTMLPipeline.prototype.output = function() {
var that = this;
return Promise()
.then(this.addHeadingIDs)
.then(function() {
return renderDOM(that.$);
});
};
module.exports = HTMLPipeline;
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