diff options
Diffstat (limited to 'doc/codelab/wiki/final.go')
-rw-r--r-- | doc/codelab/wiki/final.go | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/doc/codelab/wiki/final.go b/doc/codelab/wiki/final.go deleted file mode 100644 index c97a699d4..000000000 --- a/doc/codelab/wiki/final.go +++ /dev/null @@ -1,93 +0,0 @@ -package main - -import ( - "http" - "io/ioutil" - "os" - "regexp" - "template" -) - -type Page struct { - Title string - Body []byte -} - -func (p *Page) save() os.Error { - filename := p.Title + ".txt" - return ioutil.WriteFile(filename, p.Body, 0600) -} - -func loadPage(title string) (*Page, os.Error) { - filename := title + ".txt" - body, err := ioutil.ReadFile(filename) - if err != nil { - return nil, err - } - return &Page{Title: title, Body: body}, nil -} - -func viewHandler(w http.ResponseWriter, r *http.Request, title string) { - p, err := loadPage(title) - if err != nil { - http.Redirect(w, r, "/edit/"+title, http.StatusFound) - return - } - renderTemplate(w, "view", p) -} - -func editHandler(w http.ResponseWriter, r *http.Request, title string) { - p, err := loadPage(title) - if err != nil { - p = &Page{Title: title} - } - renderTemplate(w, "edit", p) -} - -func saveHandler(w http.ResponseWriter, r *http.Request, title string) { - body := r.FormValue("body") - p := &Page{Title: title, Body: []byte(body)} - err := p.save() - if err != nil { - http.Error(w, err.String(), http.StatusInternalServerError) - return - } - http.Redirect(w, r, "/view/"+title, http.StatusFound) -} - -var templates = make(map[string]*template.Template) - -func init() { - for _, tmpl := range []string{"edit", "view"} { - templates[tmpl] = template.MustParseFile(tmpl+".html", nil) - } -} - -func renderTemplate(w http.ResponseWriter, tmpl string, p *Page) { - err := templates[tmpl].Execute(w, p) - if err != nil { - http.Error(w, err.String(), http.StatusInternalServerError) - } -} - -const lenPath = len("/view/") - -var titleValidator = regexp.MustCompile("^[a-zA-Z0-9]+$") - -func makeHandler(fn func(http.ResponseWriter, *http.Request, string)) http.HandlerFunc { - return func(w http.ResponseWriter, r *http.Request) { - title := r.URL.Path[lenPath:] - if !titleValidator.MatchString(title) { - http.NotFound(w, r) - return - } - fn(w, r, title) - } -} - -func main() { - http.HandleFunc("/view/", makeHandler(viewHandler)) - http.HandleFunc("/edit/", makeHandler(editHandler)) - http.HandleFunc("/save/", makeHandler(saveHandler)) - http.ListenAndServe(":8080", nil) -} |