Create basic gopaste web app

editor.html

@@ -0,0 +1,6 @@
+<h1>gopaste</h1>
+
+<form action="/create" method="post">
+	<textarea name="stuff"></textarea>
+	<input type="submit" value="Post" />
+</form>

paste.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"crypto/md5"
+	"encoding/base64"
+	"html/template"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+func main() {
+	// Take user input, save it
+	http.HandleFunc("/create", createPost)
+	// Retrieve that, display it
+	http.HandleFunc("/post/", viewPost)
+	// Show an editor
+	http.HandleFunc("/", viewEditor)
+
+	log.Print("Listening...")
+	log.Fatal(http.ListenAndServe(":8888", nil))
+}
+
+func viewPost(w http.ResponseWriter, r *http.Request) {
+	log.Print(r.URL.Path)
+
+	id := r.URL.Path[len("/post/"):]
+	data, err := ioutil.ReadFile(id + ".txt")
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	t, err := template.ParseFiles("post.html")
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	t.Execute(w, string(data))
+}
+
+func createPost(w http.ResponseWriter, r *http.Request) {
+	log.Print(r.URL.Path)
+
+	data := r.FormValue("stuff")
+	h := md5.New()
+	idHash := h.Sum([]byte(data))
+	id := base64.StdEncoding.EncodeToString(idHash)
+
+	err := ioutil.WriteFile(id+".txt", []byte(data), 0600)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	http.Redirect(w, r, "/post/"+id, http.StatusFound)
+}
+
+func viewEditor(w http.ResponseWriter, r *http.Request) {
+	log.Print(r.URL.Path)
+
+	// Display editor
+	t, err := template.ParseFiles("editor.html")
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	t.Execute(w, nil)
+}

post.html

@@ -0,0 +1,3 @@
+<h1>gopaste</h1>
+
+<article style="white-space: pre">{{.}}</article>