added redirect anchors

pkg/srv/interceptor.go

@@ -7,14 +7,9 @@ import (
 	"encoding/xml"
 	"net/http"
 	"sort"
+	"strings"
 )
 
-type dirContents struct {
-	AllPaths []string `xml:"a"`
-	Dirs     []string `xml:"-"`
-	Files    []string `xml:"-"`
-}
-
 type statusInterceptor struct {
 	w      http.ResponseWriter
 	status int
@@ -23,13 +18,16 @@ type statusInterceptor struct {
 func (s *statusInterceptor) Header() http.Header {
 	return s.w.Header()
 }
+
 func (s *statusInterceptor) Write(p []byte) (int, error) {
 	return s.w.Write(p)
 }
+
 func (s *statusInterceptor) WriteHeader(statusCode int) {
 	s.w.WriteHeader(statusCode)
 	s.status = statusCode
 }
+
 func (s *statusInterceptor) Status() int {
 	if s.status == 0 {
 		return http.StatusOK
@@ -37,6 +35,23 @@ func (s *statusInterceptor) Status() int {
 	return s.status
 }
 
+type dirContents struct {
+	AllPaths []string `xml:"a"`
+	Dirs     []string `xml:"-"`
+	Files    files    `xml:"-"`
+}
+
+type file struct {
+	Name   string
+	Anchor string
+}
+
+type files []file
+
+func (f files) Len() int           { return len(f) }
+func (f files) Less(i, j int) bool { return f[i].Name < f[j].Name }
+func (f files) Swap(i, j int)      { f[i], f[j] = f[j], f[i] }
+
 type responseInterceptor struct {
 	buf    bytes.Buffer
 	w      http.ResponseWriter
@@ -46,18 +61,22 @@ type responseInterceptor struct {
 func (r *responseInterceptor) Header() http.Header {
 	return r.w.Header()
 }
+
 func (r *responseInterceptor) Write(p []byte) (int, error) {
 	return r.buf.Write(p)
 }
+
 func (r *responseInterceptor) WriteHeader(statusCode int) {
 	r.status = statusCode
 }
+
 func (r *responseInterceptor) Status() int {
 	if r.status == 0 {
 		return http.StatusOK
 	}
 	return r.status
 }
+
 func (r *responseInterceptor) GetPaths() (dir dirContents, err error) {
 	err = xml.Unmarshal(r.buf.Bytes(), &dir)
 	if err != nil {
@@ -67,10 +86,18 @@ func (r *responseInterceptor) GetPaths() (dir dirContents, err error) {
 		if p[len(p)-1] == '/' {
 			dir.Dirs = append(dir.Dirs, p)
 		} else {
-			dir.Files = append(dir.Files, p)
+			dir.Files = append(dir.Files, file{Name: p, Anchor: anchor(p)})
 		}
 	}
 	sort.Strings(dir.Dirs)
-	sort.Strings(dir.Files)
+	sort.Sort(dir.Files)
 	return
 }
+
+func anchor(s string) string {
+	if i := strings.LastIndex(s, "/"); i > 0 && i+1 < len(s) {
+		s = s[i+1:]
+	}
+	s = strings.ReplaceAll(s, " ", "_")
+	return strings.ToLower(s)
+}