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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"io/ioutil"
"net/http"
)
type Page struct {
Title string
Body []byte
}
func (p *Page) save() error {
filename := p.Title + ".txt"
return ioutil.WriteFile(filename, p.Body, 0600)
}
func loadPage(title string) (*Page, error) {
filename := title + ".txt"
body, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return &Page{Title: title, Body: body}, nil
}
const lenPath = len("/view/")
func viewHandler(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[lenPath:]
p, _ := loadPage(title)
fmt.Fprintf(w, "<h1>%s</h1><div>%s</div>", p.Title, p.Body)
}
func editHandler(w http.ResponseWriter, r *http.Request) {
title := r.URL.Path[lenPath:]
p, err := loadPage(title)
if err != nil {
p = &Page{Title: title}
}
fmt.Fprintf(w, "<h1>Editing %s</h1>"+
"<form action=\"/save/%s\" method=\"POST\">"+
"<textarea name=\"body\">%s</textarea><br>"+
"<input type=\"submit\" value=\"Save\">"+
"</form>",
p.Title, p.Title, p.Body)
}
func main() {
http.HandleFunc("/view/", viewHandler)
http.HandleFunc("/edit/", editHandler)
http.ListenAndServe(":8080", nil)
}
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