From 7600cd35771d8ac305f80b5d48954cc04d59fa49 Mon Sep 17 00:00:00 2001
From: Joes <dygood@outlook.com>
Date: Mon, 23 Sep 2024 23:16:58 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0=E6=B8=85=E9=99=A4?=
 =?UTF-8?q?=E6=8E=A7=E5=88=B6=E5=8F=B0=E4=B8=8A=E4=B8=80=E8=A1=8C=E5=86=85?=
 =?UTF-8?q?=E5=AE=B9=E7=9A=84=E6=96=B9=E6=B3=95.?=
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---
 .../Misc/TextWriterExtensions.cs              | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/src/EasilyNET.Core/Misc/TextWriterExtensions.cs b/src/EasilyNET.Core/Misc/TextWriterExtensions.cs
index b0b38314..cf173d8d 100644
--- a/src/EasilyNET.Core/Misc/TextWriterExtensions.cs
+++ b/src/EasilyNET.Core/Misc/TextWriterExtensions.cs
@@ -59,6 +59,36 @@ public static async Task SafeClearCurrentLine(this TextWriter _)
         }
     }
 
+    /// <summary>
+    /// 线程安全的清除上一行
+    /// <remarks>
+    ///     <para>
+    ///     使用方式:
+    ///     <code>
+    ///   <![CDATA[
+    ///  Console.Out.SafeClearPreviousLine();
+    /// ]]>
+    /// </code>
+    ///     </para>
+    /// </remarks>
+    /// </summary>
+    /// <returns></returns>
+    public static async Task SafeClearPreviousLine(this TextWriter _)
+    {
+        using (await _lock.LockAsync())
+        {
+            ClearPreviousLine();
+        }
+    }
+
+    private static void ClearPreviousLine()
+    {
+        if (Console.CursorTop <= 0) return;
+        Console.SetCursorPosition(0, Console.CursorTop - 1);
+        Console.Write(new string(' ', Console.WindowWidth));
+        Console.SetCursorPosition(0, Console.CursorTop - 1);
+    }
+
     private static void ClearCurrentLine()
     {
         Console.SetCursorPosition(0, Console.CursorTop);