fix(archive): use url base name instead of fs name for alias root

Author: marjune163

src/serverHandler/archive.go

@@ -122,7 +122,16 @@ func (h *handler) archive(
 	filterCallback filterCallback,
 	cbWriteFile archiveCallback,
 ) {
-	targetFilename := pageData.ItemName + fileSuffix
+	var itemName string
+	_, hasAlias := h.aliases.byUrlPath(pageData.rawReqPath)
+	if hasAlias {
+		itemName = path.Base(pageData.rawReqPath)
+	}
+	if len(itemName) == 0 || itemName == "/" {
+		itemName = pageData.ItemName
+	}
+
+	targetFilename := itemName + fileSuffix
 	writeArchiveHeader(w, contentType, targetFilename)
 
 	if !needResponseBody(r.Method) {

src/serverHandler/responseData.go

@@ -211,7 +211,7 @@ func getItemName(info os.FileInfo, r *http.Request) (itemName string) {
 	if info != nil {
 		itemName = info.Name()
 	}
-	if len(itemName) == 0 || itemName == "." {
+	if len(itemName) == 0 || itemName == "." || itemName == "/" {
 		itemName = strings.Replace(r.Host, ":", "_", -1)
 	}
 	return