Merge pull request martini-contrib#39 from gavv/text_renderer

Add Text() method for writing plain text responses

README.md

@@ -148,6 +148,11 @@ func main() {
     r.XML(200, Greeting{One: "hello", Two: "world"})
   })
 
+  // This will set the Content-Type header to "text/plain; charset=UTF-8"
+  m.Get("/text", func(r render.Render) {
+    r.Text(200, "hello, world")
+  })
+
   m.Run()
 }
 
@@ -192,6 +197,11 @@ func main() {
     r.XML(200, Greeting{One: "hello", Two: "world"})
   })
 
+  // This will set the Content-Type header to "text/plain; charset=ISO-8859-1"
+  m.Get("/text", func(r render.Render) {
+    r.Text(200, "hello, world")
+  })
+
   m.Run()
 }
 

render.go

@@ -57,6 +57,7 @@ const (
 	ContentType    = "Content-Type"
 	ContentLength  = "Content-Length"
 	ContentBinary  = "application/octet-stream"
+	ContentText    = "text/plain"
 	ContentJSON    = "application/json"
 	ContentHTML    = "text/html"
 	ContentXHTML   = "application/xhtml+xml"
@@ -88,6 +89,8 @@ type Render interface {
 	XML(status int, v interface{})
 	// Data writes the raw byte array to the http.ResponseWriter.
 	Data(status int, v []byte)
+	// Text writes the given status and plain text to the http.ResponseWriter.
+	Text(status int, v string)
 	// Error is a convenience function that writes an http status to the http.ResponseWriter.
 	Error(status int)
 	// Status is an alias for Error (writes an http status to the http.ResponseWriter)
@@ -323,6 +326,14 @@ func (r *renderer) Data(status int, v []byte) {
 	r.Write(v)
 }
 
+func (r *renderer) Text(status int, v string) {
+	if r.Header().Get(ContentType) == "" {
+		r.Header().Set(ContentType, ContentText+r.compiledCharset)
+	}
+	r.WriteHeader(status)
+	r.Write([]byte(v))
+}
+
 // Error writes the given HTTP status to the current ResponseWriter
 func (r *renderer) Error(status int) {
 	r.WriteHeader(status)