如何在Go中的Blackfriday中插入/提取前件？

In jekyll you insert this at the top of your markdown and are able to insert them into your layouts:

---

layout: post

title: Blogging Like a Hacker

---

I need to do the same in Go using no frameworks or fancy packages. Just Golang.

import (
       "github.com/russross/blackfriday"
       "html/template"
       "io/ioutil"
       "net/http"
)

type webPost struct {
     Title       string
     Author      string
     Description string
     Body        template.HTML
}



func handlePost(res http.ResponseWriter, req *http.Request) {

          //Read in some markdown from a file
          input, _ := ioutil.ReadFile("test.md")
          //Render it into HTML
          output := blackfriday.MarkdownCommon(input)

          //I need the first three parameters to grab the front matter from test.md
          post := webPost{"title", "author", "a descritpion", template.HTML(output)}
          //Serve to client a template 
          templates.ExecuteTemplate(res, "Post", post)
}