fumin/present.go

## present.go
package main

import (
	"bytes"
	"html/template"
	"net/http"

	"code.google.com/p/go.tools/present"
)

var blogTmpl *template.Template

func init() {
	blogTmpl = template.Must(present.Template().Parse(blogTmplStr))
}

// blogTmplStr defines how elements are turned into HTML. It is heavily based on
// https://code.google.com/p/go/source/browse/template/doc.tmpl?repo=blog
const blogTmplStr = `
{{/* This doc template is given to the present tool to format articles.  */}}

{{define "root"}}

  <body>

  {{with .Subtitle}}<h2>{{.}}</h2>{{end}}
  {{range .Sections}}
    {{elem $.Template .}}
  {{end}}

  </body>

{{end}}

{{define "TOC"}}
  <ul>
  {{range .}}
    <li><a href="#TOC_{{.FormattedNumber}}">{{.Title}}</a></li>
    {{with .Sections}}{{template "TOC" .}}{{end}}
  {{end}}
  </ul>
{{end}}

{{define "newline"}}
{{/* No automatic line break. Paragraphs are free-form. */}}
{{end}}

{{define "section"}}
  {{if eq .Level 2}}
  <h3 id="TOC_{{.FormattedNumber}}">{{.Title}}</h4>
  {{range .Elem}}{{elem $.Template .}}{{end}}
  {{else}}
  <h4 id="TOC_{{.FormattedNumber}}">{{.Title}}</h4>
  {{range .Elem}}{{elem $.Template .}}{{end}}
  {{end}}
{{end}}

{{define "list"}}
  <ul>
  {{range .Bullet}}
    <li>{{style .}}</li>
  {{end}}
  </ul>
{{end}}

{{define "text"}}
  {{if .Pre}}
  <div class="code"><pre>{{range .Lines}}{{.}}{{end}}</pre></div>
  {{else}}
  <p>
    {{range $i, $l := .Lines}}{{if $i}}{{template "newline"}}
    {{end}}{{style $l}}{{end}}
  </p>
  {{end}}
{{end}}

{{define "code"}}
  {{if .Play}}
  <div class="playground">{{.Text}}</div>
  {{else}}
  <div class="code">{{.Text}}</div>
  {{end}}
{{end}}

{{define "image"}}
<div class="image">
  <img src="{{.URL}}"{{with .Height}} height="{{.}}"{{end}}{{with .Width}} width="{{.}}"{{end}}>
</div>
{{end}}

{{define "iframe"}}
<div class="iframe">
  <iframe src="{{.URL}}"{{with .Height}} height="{{.}}"{{end}}{{with .Width}} width="{{.}}"{{end}} frameborder="0" allowfullscreen mozallowfullscreen webkitallowfullscreen></iframe>
</div>
{{end}}

{{define "link"}}<p class="link"><a href="{{.URL}}" target="_blank">{{style .Label}}</a></p>{{end}}

{{define "html"}}{{.HTML}}{{end}}
`

func root(w http.ResponseWriter, r *http.Request) {
	test := `
Title of document

@awawfumin

* My first document

Drinks are good!
May god bless you~

** Subsection

<script>alert("you are screwed!");</script>

- a one
- a two
- a three

More text, perhaps a story.

* dfsdfadf

soidfjsodifj

- 111
- 222
- 3333

.image http://stellarglobal.com/webdata/images/2013/09/dinningtable.png

Again, some more text for you to read...
`
	b := bytes.NewBufferString(test)
	doc, err := present.Parse(b, "test", 0)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	ob := bytes.NewBuffer([]byte{})
	err = doc.Render(ob, blogTmpl)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	w.Write(ob.Bytes())
}

func main() {
	http.HandleFunc("/", root)
	http.ListenAndServe(":3000", nil)
}
	package main

	import (
	"bytes"
	"html/template"
	"net/http"

	"code.google.com/p/go.tools/present"
	)

	var blogTmpl *template.Template

	func init() {
	blogTmpl = template.Must(present.Template().Parse(blogTmplStr))
	}

	// blogTmplStr defines how elements are turned into HTML. It is heavily based on
	// https://code.google.com/p/go/source/browse/template/doc.tmpl?repo=blog
	const blogTmplStr = `
	{{/* This doc template is given to the present tool to format articles. */}}

	{{define "root"}}

	<body>

	{{with .Subtitle}}<h2>{{.}}</h2>{{end}}
	{{range .Sections}}
	{{elem $.Template .}}
	{{end}}

	</body>

	{{end}}

	{{define "TOC"}}
	<ul>
	{{range .}}
	<li><a href="#TOC_{{.FormattedNumber}}">{{.Title}}</a></li>
	{{with .Sections}}{{template "TOC" .}}{{end}}
	{{end}}
	</ul>
	{{end}}

	{{define "newline"}}
	{{/* No automatic line break. Paragraphs are free-form. */}}
	{{end}}

	{{define "section"}}
	{{if eq .Level 2}}
	<h3 id="TOC_{{.FormattedNumber}}">{{.Title}}</h4>
	{{range .Elem}}{{elem $.Template .}}{{end}}
	{{else}}
	<h4 id="TOC_{{.FormattedNumber}}">{{.Title}}</h4>
	{{range .Elem}}{{elem $.Template .}}{{end}}
	{{end}}
	{{end}}

	{{define "list"}}
	<ul>
	{{range .Bullet}}
	<li>{{style .}}</li>
	{{end}}
	</ul>
	{{end}}

	{{define "text"}}
	{{if .Pre}}
	<div class="code"><pre>{{range .Lines}}{{.}}{{end}}</pre></div>
	{{else}}
	<p>
	{{range $i, $l := .Lines}}{{if $i}}{{template "newline"}}
	{{end}}{{style $l}}{{end}}
	</p>
	{{end}}
	{{end}}

	{{define "code"}}
	{{if .Play}}
	<div class="playground">{{.Text}}</div>
	{{else}}
	<div class="code">{{.Text}}</div>
	{{end}}
	{{end}}

	{{define "image"}}
	<div class="image">
	<img src="{{.URL}}"{{with .Height}} height="{{.}}"{{end}}{{with .Width}} width="{{.}}"{{end}}>
	</div>
	{{end}}

	{{define "iframe"}}
	<div class="iframe">
	<iframe src="{{.URL}}"{{with .Height}} height="{{.}}"{{end}}{{with .Width}} width="{{.}}"{{end}} frameborder="0" allowfullscreen mozallowfullscreen webkitallowfullscreen></iframe>
	</div>
	{{end}}

	{{define "link"}}<p class="link"><a href="{{.URL}}" target="_blank">{{style .Label}}</a></p>{{end}}

	{{define "html"}}{{.HTML}}{{end}}
	`

	func root(w http.ResponseWriter, r *http.Request) {
	test := `
	Title of document

	@awawfumin

	* My first document

	Drinks are good!
	May god bless you~

	** Subsection

	<script>alert("you are screwed!");</script>

	- a one
	- a two
	- a three

	More text, perhaps a story.

	* dfsdfadf

	soidfjsodifj

	- 111
	- 222
	- 3333

	.image http://stellarglobal.com/webdata/images/2013/09/dinningtable.png

	Again, some more text for you to read...
	`
	b := bytes.NewBufferString(test)
	doc, err := present.Parse(b, "test", 0)
	if err != nil {
	http.Error(w, err.Error(), http.StatusBadRequest)
	return
	}

	ob := bytes.NewBuffer([]byte{})
	err = doc.Render(ob, blogTmpl)
	if err != nil {
	http.Error(w, err.Error(), http.StatusBadRequest)
	return
	}
	w.Write(ob.Bytes())
	}

	func main() {
	http.HandleFunc("/", root)
	http.ListenAndServe(":3000", nil)
	}