port from perforce

aiwaz/Aiwaz.Common/Win32Console.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Text;
+using System.IO;
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+namespace Aiwaz.Common
+{
+    public class Win32Console : IDisposable
+    {
+        [DllImport("kernel32.dll", EntryPoint = "FreeConsole", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        public static extern int FreeConsole();
+        [DllImport("kernel32.dll", EntryPoint = "GetStdHandle", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        private static extern IntPtr GetStdHandle(int nStdHandle);
+        [DllImport("kernel32.dll", EntryPoint = "AllocConsole", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
+        private static extern int AllocConsole();
+
+        private const int STD_OUTPUT_HANDLE = -11;
+        private const int MY_CODE_PAGE = 437;
+
+        public Win32Console()
+        {
+            AllocConsole();
+            IntPtr stdHandle = GetStdHandle(STD_OUTPUT_HANDLE);
+            SafeFileHandle safeFileHandle = new SafeFileHandle(stdHandle, true);
+            FileStream fileStream = new FileStream(safeFileHandle, FileAccess.Write);
+            Encoding encoding = System.Text.Encoding.GetEncoding(MY_CODE_PAGE);
+            StreamWriter standardOutput = new StreamWriter(fileStream, encoding);
+            standardOutput.AutoFlush = true;
+            Console.SetOut(standardOutput);
+        }
+    
+        #region IDisposable Members
+
+        public void  Dispose()
+        {
+            FreeConsole();
+        }
+
+        #endregion
+    }
+}