Add inbrowser basic streaming

handlers.go

@@ -130,6 +130,34 @@ func HandleDownload(w http.ResponseWriter, r *http.Request) {
 	io.CopyBuffer(w, f, make([]byte, 4096))
 }
 
+func HandleStream(w http.ResponseWriter, r *http.Request) {
+	filename := filepath.Base(r.FormValue("filename"))
+
+	if filename == "" {
+		http.Error(w, `"filename" field can't be empty`, http.StatusBadRequest)
+		return
+	}
+
+	f, err := os.Open(filepath.Join(config.StoragePath, filename))
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	defer f.Close()
+
+	fileStat, err := f.Stat()
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", mime.TypeByExtension(filepath.Ext(filename)))
+	w.Header().Set("Accept-Ranges", "none")
+	w.Header().Set("Content-Length", strconv.Itoa(int(fileStat.Size())))
+
+	io.CopyBuffer(w, f, make([]byte, 4096))
+}
+
 func HandleIcon(w http.ResponseWriter, r *http.Request) {
 	ext := r.FormValue("ext")
 

main.go

@@ -35,6 +35,7 @@ func init() {
 	http.HandleFunc("/icon", HandleIcon)
 	http.HandleFunc("/upload", HandleUpload)
 	http.HandleFunc("/download", HandleDownload)
+	http.HandleFunc("/stream", HandleStream)
 }
 
 func main() {

site/style.css

@@ -126,6 +126,11 @@ input[type="file"] {
 	display: none;
 }
 
+.right {
+	float: right;
+	color: #545862;
+}
+
 label {
 	border-radius: 0.25em;
 	background-color: #61afef;

templates/index.htm

@@ -31,7 +31,7 @@
 				<th>Дата</th>
 			</tr>
 {{range .Files}}			<tr>
-				<td><img src="/icon?ext={{.Ext}}"> <a href="/download?filename={{.Name}}">{{.Name}}</a></td>
+				<td><img src="/icon?ext={{.Ext}}"> <a href="/download?filename={{.Name}}">{{.Name}}</a> <a class="right" href="/stream?filename={{.Name}}">просмотр</a></td>
 				<td><pre>{{.Size}}</pre></td>
 				<td>{{.Date}}</td>
 			</tr>