add .txt rendering in-template

gopherproxy.go

@@ -1,6 +1,7 @@
 package gopherproxy
 
 import (
+	"bytes"
 	"fmt"
 	"html/template"
 	"io"
@@ -125,13 +126,23 @@ func GopherHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, uri
 		}
 
 		if res.Body != nil {
-			// handle markdown
 			if strings.HasSuffix(uri, ".md") {
+				// handle markdown
 				tpl.Execute(w, struct {
 					Title     string
 					MdText    template.HTML
 					Gophermap bool
 				}{uri, renderMd(res.Body), false})
+
+			} else if strings.HasSuffix(uri, ".txt") {
+				// handle .txt files
+				buf := new(bytes.Buffer)
+				buf.ReadFrom(res.Body)
+				tpl.Execute(w, struct {
+					Title     string
+					MdText    string
+					Gophermap bool
+				}{uri, buf.String(), false})
 			} else {
 				io.Copy(w, res.Body)
 			}