Fix garbled/mojibake text display issues for non-English Unicode characters in browsers. (#441)

* Update util.go

Fix garbled/mojibake text display issues for non-English Unicode characters in browsers.

* add Content-Disposition, help handle file name on download

Author:    awkj <hzzbiu@gmail.com>

internal/web/handlers/gist/download.go

@@ -21,7 +21,9 @@ func RawFile(ctx *context.Context) error {
 		return ctx.NotFound("File not found")
 	}
 	contentType := handlers.GetContentTypeFromFilename(file.Filename)
+	ContentDisposition := handlers.GetContentDisposition(file.Filename)
 	ctx.Response().Header().Set("Content-Type", contentType)
+	ctx.Response().Header().Set("Content-Disposition", ContentDisposition)
 	return ctx.PlainText(200, file.Content)
 }
 

internal/web/handlers/util.go

@@ -2,13 +2,14 @@ package handlers
 
 import (
 	"errors"
-	"github.com/gorilla/schema"
 	"html/template"
 	"net/url"
 	"path/filepath"
 	"strconv"
 	"strings"
 
+	"github.com/gorilla/schema"
+
 	"github.com/thomiceli/opengist/internal/web/context"
 )
 
@@ -141,12 +142,21 @@ func ParseSearchQueryStr(query string) (string, map[string]string) {
 	return content, metadata
 }
 
-func GetContentTypeFromFilename(filename string) string {
+func GetContentTypeFromFilename(filename string) (ret string) {
 	ext := strings.ToLower(filepath.Ext(filename))
+
 	switch ext {
 	case ".css":
-		return "text/css"
+		ret = "text/css"
 	default:
-		return "text/plain"
+		ret = "text/plain"
 	}
+
+	// add charset=utf-8, if not, unicode charset will be broken
+	ret += "; charset=utf-8"
+	return
+}
+
+func GetContentDisposition(filename string) string {
+	return "inline; filename=\"" + filename + "\""
 }