Use plain integers to represent status codes

examples/client.go

@@ -95,7 +95,7 @@ func do(req *gemini.Request, via []*gemini.Request) (*gemini.Response, error) {
 		return resp, err
 	}
 
-	switch resp.Status.Class() {
+	switch gemini.StatusClass(resp.Status) {
 	case gemini.StatusClassInput:
 		input, ok := getInput(resp.Meta, resp.Status == gemini.StatusSensitiveInput)
 		if !ok {
@@ -148,7 +148,7 @@ func main() {
 	defer resp.Body.Close()
 
 	// Handle response
-	if resp.Status.Class() == gemini.StatusClassSuccess {
+	if gemini.StatusClass(resp.Status) == gemini.StatusClassSuccess {
 		body, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
 			log.Fatal(err)

response.go

@@ -10,7 +10,7 @@ import (
 // Response is a Gemini response.
 type Response struct {
 	// Status contains the response status code.
-	Status Status
+	Status int
 
 	// Meta contains more information related to the response status.
 	// For successful responses, Meta should contain the media type of the response.
@@ -43,11 +43,11 @@ func ReadResponse(rc io.ReadCloser) (*Response, error) {
 	if err != nil {
 		return nil, err
 	}
-	resp.Status = Status(status)
+	resp.Status = status
 
 	// Disregard invalid status codes
 	const minStatus, maxStatus = 1, 6
-	statusClass := resp.Status.Class()
+	statusClass := resp.Status / 10
 	if statusClass < minStatus || statusClass > maxStatus {
 		return nil, ErrInvalidResponse
 	}
@@ -83,7 +83,7 @@ func ReadResponse(rc io.ReadCloser) (*Response, error) {
 		return nil, ErrInvalidResponse
 	}
 
-	if resp.Status.Class() == StatusClassSuccess {
+	if resp.Status/10 == StatusClassSuccess {
 		resp.Body = newReadCloserBody(br, rc)
 	} else {
 		resp.Body = nopReadCloser{}
@@ -132,7 +132,7 @@ func (b *readCloserBody) Read(p []byte) (n int, err error) {
 // ResponseWriter is used to construct a Gemini response.
 type ResponseWriter struct {
 	b           *bufio.Writer
-	status      Status
+	status      int
 	meta        string
 	wroteHeader bool
 	bodyAllowed bool
@@ -146,16 +146,16 @@ func NewResponseWriter(w io.Writer) *ResponseWriter {
 }
 
 // Header sets the response header.
-func (w *ResponseWriter) Header(status Status, meta string) {
+func (w *ResponseWriter) Header(status int, meta string) {
 	w.status = status
 	w.meta = meta
 }
 
 // Status sets the response status code.
-// It also sets the response meta to status.Meta().
+// It also sets the response meta to Meta(status).
-func (w *ResponseWriter) Status(status Status) {
+func (w *ResponseWriter) Status(status int) {
 	w.status = status
-	w.meta = status.Meta()
+	w.meta = Meta(status)
 }
 
 // Meta sets the response meta.
@@ -183,14 +183,14 @@ func (w *ResponseWriter) Write(b []byte) (int, error) {
 	return w.b.Write(b)
 }
 
-func (w *ResponseWriter) writeHeader(defaultStatus Status) {
+func (w *ResponseWriter) writeHeader(defaultStatus int) {
 	status := w.status
 	if status == 0 {
 		status = defaultStatus
 	}
 
 	meta := w.meta
-	if status.Class() == StatusClassSuccess {
+	if status/10 == StatusClassSuccess {
 		w.bodyAllowed = true
 
 		if meta == "" {
@@ -198,7 +198,7 @@ func (w *ResponseWriter) writeHeader(defaultStatus Status) {
 		}
 	}
 
-	w.b.WriteString(strconv.Itoa(int(status)))
+	w.b.WriteString(strconv.Itoa(status))
 	w.b.WriteByte(' ')
 	w.b.WriteString(meta)
 	w.b.Write(crlf)

status.go

@@ -1,51 +1,47 @@
 package gemini
 
 // Status codes.
-type Status int
-
 const (
-	StatusInput                    Status = 10
+	StatusInput                    = 10
-	StatusSensitiveInput           Status = 11
+	StatusSensitiveInput           = 11
-	StatusSuccess                  Status = 20
+	StatusSuccess                  = 20
-	StatusRedirect                 Status = 30
+	StatusRedirect                 = 30
-	StatusPermanentRedirect        Status = 31
+	StatusPermanentRedirect        = 31
-	StatusTemporaryFailure         Status = 40
+	StatusTemporaryFailure         = 40
-	StatusServerUnavailable        Status = 41
+	StatusServerUnavailable        = 41
-	StatusCGIError                 Status = 42
+	StatusCGIError                 = 42
-	StatusProxyError               Status = 43
+	StatusProxyError               = 43
-	StatusSlowDown                 Status = 44
+	StatusSlowDown                 = 44
-	StatusPermanentFailure         Status = 50
+	StatusPermanentFailure         = 50
-	StatusNotFound                 Status = 51
+	StatusNotFound                 = 51
-	StatusGone                     Status = 52
+	StatusGone                     = 52
-	StatusProxyRequestRefused      Status = 53
+	StatusProxyRequestRefused      = 53
-	StatusBadRequest               Status = 59
+	StatusBadRequest               = 59
-	StatusCertificateRequired      Status = 60
+	StatusCertificateRequired      = 60
-	StatusCertificateNotAuthorized Status = 61
+	StatusCertificateNotAuthorized = 61
-	StatusCertificateNotValid      Status = 62
+	StatusCertificateNotValid      = 62
 )
 
 // Status code categories.
-type StatusClass int
-
 const (
-	StatusClassInput               StatusClass = 1
+	StatusClassInput               = 1
-	StatusClassSuccess             StatusClass = 2
+	StatusClassSuccess             = 2
-	StatusClassRedirect            StatusClass = 3
+	StatusClassRedirect            = 3
-	StatusClassTemporaryFailure    StatusClass = 4
+	StatusClassTemporaryFailure    = 4
-	StatusClassPermanentFailure    StatusClass = 5
+	StatusClassPermanentFailure    = 5
-	StatusClassCertificateRequired StatusClass = 6
+	StatusClassCertificateRequired = 6
 )
 
-// Class returns the status class for this status code.
+// StatusClass returns the status class for this status code.
-func (s Status) Class() StatusClass {
+func StatusClass(status int) int {
-	return StatusClass(s / 10)
+	return status / 10
 }
 
 // Meta returns a description of the status code appropriate for use in a response.
 //
 // Meta returns an empty string for input, success, and redirect status codes.
-func (s Status) Meta() string {
+func Meta(status int) string {
-	switch s {
+	switch status {
 	case StatusTemporaryFailure:
 		return "Temporary failure"
 	case StatusServerUnavailable: