Initial commit.

lib/index.js

@@ -0,0 +1,68 @@
+var co = require('co');
+var inlineLess = require('inline-less');
+var inlineCssUrl = require('inline-css-url');
+var cheerio = require('cheerio');
+var string = require('string');
+var fs = require('mz/fs');
+
+// TODO refactor into separate module
+// inline html images
+var localPath = require('local-path');
+var datauri = require('datauri');
+var path = require('path');
+var inlineImg = function (html, filePath) {
+	var basedir = path.dirname(filePath);
+	var $ = cheerio.load(html);
+	var images = $('img').filter(function (index, element) {
+		return localPath($(element).attr('src'));
+	});
+	images.each(function (index, element) {
+		var src = $(element).attr('src');
+		var filePath = path.resolve(basedir, src);
+		src = datauri(filePath);
+		$(element).attr('src', src);
+	});
+	return $.html();
+};
+
+// TODO refactor into separate module
+// inline html url css data types
+var inlineUrl = function (html, filePath) {
+	var $ = cheerio.load(html);
+	// style elements
+	var styles = $('style');
+	styles.each(function (index, element) {
+		var css = $(element).html();
+		css = inlineCssUrl(css, filePath);
+		$(element).html(css);
+	});
+	// style attributes
+	var attributes = $('body *').filter('[style]');
+	attributes.each(function (index, element) {
+		var css = $(element).attr('style');
+		var prefix = 'element {';
+		var suffix = '}';
+		css = prefix + css + suffix;
+		css = inlineCssUrl(css, filePath);
+		css = string(css).collapseWhitespace().toString();
+		css = css.replace(new RegExp('^' + prefix + '\\s*(.*)\\s+' + suffix + '$'), '$1');
+		$(element).attr('style', css);
+	});
+	return $.html();
+};
+
+var inline = co.wrap(function * (filePath, options) {
+	var html = yield fs.readFile(filePath, 'utf8');
+	// inline links: less
+	html = yield inlineLess(html, filePath, options);
+	// TODO inline links: css
+	// TODO inline scripts (js + browserify? = scriptify)
+
+	// Inline local assets (path -> datauri)
+	html = inlineUrl(html, filePath);
+	html = inlineImg(html, filePath);
+	// svg?
+
+	return html;
+});
+module.exports = inline;