render.go
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render.go
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	package posts

	import (
	"github.com/microcosm-cc/bluemonday"
	"github.com/writeas/saturday"
	"regexp"
	)

	var (
	blockReg = regexp.MustCompile("<(ul\|ol\|blockquote)>\n")
	endBlockReg = regexp.MustCompile("</([a-z]+)>\n</(ul\|ol\|blockquote)>")
	)

	func ApplyMarkdown(data []byte) string {
	mdExtensions := 0 \|
	blackfriday.EXTENSION_TABLES \|
	blackfriday.EXTENSION_FENCED_CODE \|
	blackfriday.EXTENSION_AUTOLINK \|
	blackfriday.EXTENSION_STRIKETHROUGH \|
	blackfriday.EXTENSION_SPACE_HEADERS \|
	blackfriday.EXTENSION_HEADER_IDS
	htmlFlags := 0 \|
	blackfriday.HTML_USE_SMARTYPANTS \|
	blackfriday.HTML_SMARTYPANTS_DASHES

	// Generate Markdown
	md := blackfriday.Markdown([]byte(data), blackfriday.HtmlRenderer(htmlFlags, "", ""), mdExtensions)
	// Strip out bad HTML
	policy := bluemonday.UGCPolicy()
	policy.AllowAttrs("class", "id").Globally()
	outHTML := string(policy.SanitizeBytes(md))
	// Strip newlines on certain block elements that render with them
	outHTML = blockReg.ReplaceAllString(outHTML, "<$1>")
	outHTML = endBlockReg.ReplaceAllString(outHTML, "</$1></$2>")

	return outHTML
	}