fix processes hanging when waiting for input (fix #3848)

Author: marticliment

src/UniGetUI.Core.Settings/SettingsEngine_Names.cs

@@ -78,6 +78,7 @@ public enum K
         KillProcessesThatRefuseToDie,
         ManagerPaths,
         GitHubUserLogin,
+        DisableNewProcessLineHandler,
 
         Test1,
         Test2,
@@ -167,6 +168,7 @@ public static string ResolveKey(K key)
             K.KillProcessesThatRefuseToDie => "KillProcessesThatRefuseToDie",
             K.ManagerPaths => "ManagerPaths",
             K.GitHubUserLogin => "GitHubUserLogin",
+            K.DisableNewProcessLineHandler => "DisableNewProcessLineHandler",
 
             K.Test1 => "TestSetting1",
             K.Test2 => "TestSetting2",

src/UniGetUI.PackageEngine.Operations/AbstractProcessOperation.cs

@@ -1,6 +1,7 @@
 using System.Diagnostics;
 using System.Text;
 using UniGetUI.Core.Logging;
+using UniGetUI.Core.SettingsEngine;
 using UniGetUI.Core.Tools;
 using UniGetUI.PackageEngine.Enums;
 
@@ -94,13 +95,19 @@ protected override async Task<OperationVeredict> PerformOperation()
         }
 
         process.Start();
+        if (!Settings.Get(Settings.K.DisableNewProcessLineHandler))
+        {
+            await process.StandardInput.WriteLineAsync("\r\n\r\n\r\n\r\n");
+            process.StandardInput.Close();
+        }
         // process.BeginOutputReadLine();
         try { process.BeginErrorReadLine(); }
         catch (Exception ex) { Logger.Error(ex); }
 
         StringBuilder currentLine= new();
         char[] buffer = new char[1];
         string? lastStringBeforeLF = null;
+
         while ((await process.StandardOutput.ReadBlockAsync(buffer)) > 0)
         {
             char c = buffer[0];
@@ -110,21 +117,13 @@ protected override async Task<OperationVeredict> PerformOperation()
                 {
                     if (lastStringBeforeLF is not null)
                     {
-                        if (lastStringBeforeLF.Contains("For the question below") || lastStringBeforeLF.Contains("Would remove:"))
-                        {
-                            await process.StandardInput.WriteLineAsync("");
-                        }
                         Line(lastStringBeforeLF, LineType.Information);
                         lastStringBeforeLF = null;
                     }
                     continue;
                 }
 
                 string line = currentLine.ToString();
-                if (line.Contains("For the question below") || line.Contains("Would remove:"))
-                {
-                    await process.StandardInput.WriteLineAsync("");
-                }
                 Line(line, LineType.Information);
                 currentLine.Clear();
             }

src/UniGetUI/Pages/SettingsPages/GeneralPages/Experimental.xaml

@@ -53,13 +53,6 @@
 
             <UserControl Height="16" />
 
-            <!--widgets:CheckboxCard
-                x:Name="DisableUniGetUIElevatorToggle"
-                BorderThickness="1,1,1,0"
-                CornerRadius="8"
-                SettingName="DisableUniGetUIElevator"
-                StateChanged="ShowRestartBanner"
-                Text="Enable the new UniGetUI-Branded UAC Elevator" /-->
             <widgets:SecureCheckboxCard
                 x:Name="UseUserGSudoToggle"
                 CornerRadius="8"
@@ -69,6 +62,12 @@
 
             <UserControl Height="16" />
 
+            <widgets:CheckboxCard
+                CornerRadius="8"
+                SettingName="DisableNewProcessLineHandler"
+                Text="Enable the new process input handler (StdIn automated closer)" />
+            <UserControl Height="16" />
+
             <widgets:CheckboxCard
                 x:Name="DisableDownloadingNewTranslations"
                 BorderThickness="1,1,1,0"