From 3ce0907dfb65e481ee8768d33b6520e2b78e3774 Mon Sep 17 00:00:00 2001
From: lily <1186233735@qq.com>
Date: Sat, 9 Jan 2021 19:18:37 +0800
Subject: [PATCH] if name is undefined, get the name of  Content-Disposition
 header instead of download

---
 src/FileSaver.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/FileSaver.js b/src/FileSaver.js
index 5d204ae..b4f8c9b 100644
--- a/src/FileSaver.js
+++ b/src/FileSaver.js
@@ -36,6 +36,10 @@ function download (url, name, opts) {
   xhr.open('GET', url)
   xhr.responseType = 'blob'
   xhr.onload = function () {
+    var matches =  /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/.exec(xhr.getResponseHeader('Content-Disposition'))
+    if (matches != null && matches[1]) { 
+      name = name || matches[1].replace(/['"]/g, '')
+    }
     saveAs(xhr.response, name, opts)
   }
   xhr.onerror = function () {