mcs/class/corlib/System/Console.cs

   1 //
   2 // System.Console.cs
   3 //
   4 // Author:
   5 //      Dietmar Maurer (dietmar@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (C) Ximian, Inc.  http://www.ximian.com
   9 // (C) 2004,2005 Novell, Inc. (http://www.novell.com)
  10 // Copyright 2013 Xamarin Inc. (http://www.xamarin.com)
  11
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Diagnostics;
  33 using System.IO;
  34 using System.Runtime.CompilerServices;
  35 using System.Runtime.InteropServices;
  36 using System.Security;
  37 using System.Security.Permissions;
  38 using System.Text;
  39
  40 namespace System
  41 {
  42         public static partial class Console
  43         {
  44 #if !NET_2_1
  45                 private class WindowsConsole
  46                 {
  47                         public static bool ctrlHandlerAdded = false;
  48                         private delegate bool WindowsCancelHandler (int keyCode);
  49                         private static WindowsCancelHandler cancelHandler = new WindowsCancelHandler (DoWindowsConsoleCancelEvent);
  50
  51                         [DllImport ("kernel32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
  52                         private static extern int GetConsoleCP ();
  53                         [DllImport ("kernel32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
  54                         private static extern int GetConsoleOutputCP ();
  55
  56                         [DllImport ("kernel32.dll", CharSet=CharSet.Auto, ExactSpelling=true)]
  57                         private static extern bool SetConsoleCtrlHandler (WindowsCancelHandler handler, bool addHandler);
  58
  59                         // Only call the event handler if Control-C was pressed (code == 0), nothing else
  60                         private static bool DoWindowsConsoleCancelEvent (int keyCode)
  61                         {
  62                                 if (keyCode == 0)
  63                                         DoConsoleCancelEvent ();
  64                                 return keyCode == 0;
  65                         }
  66
  67                         [MethodImpl (MethodImplOptions.NoInlining)]
  68                         public static int GetInputCodePage ()
  69                         {
  70                                 return GetConsoleCP ();
  71                         }
  72
  73                         [MethodImpl (MethodImplOptions.NoInlining)]
  74                         public static int GetOutputCodePage ()
  75                         {
  76                                 return GetConsoleOutputCP ();
  77                         }
  78
  79                         public static void AddCtrlHandler ()
  80                         {
  81                                 SetConsoleCtrlHandler (cancelHandler, true);
  82                                 ctrlHandlerAdded = true;
  83                         }
  84
  85                         public static void RemoveCtrlHandler ()
  86                         {
  87                                 SetConsoleCtrlHandler (cancelHandler, false);
  88                                 ctrlHandlerAdded = false;
  89                         }
  90                 }
  91 #endif
  92
  93                 internal static TextWriter stdout;
  94                 private static TextWriter stderr;
  95                 private static TextReader stdin;
  96
  97                 static Console ()
  98                 {
  99 #if NET_2_1
 100                         Encoding inputEncoding;
 101                         Encoding outputEncoding;
 102 #endif
 103
 104                         if (Environment.IsRunningOnWindows) {
 105                                 //
 106                                 // On Windows, follow the Windows tradition
 107                                 //
 108 #if NET_2_1
 109                                 // should never happen since Moonlight does not run on windows
 110                                 inputEncoding = outputEncoding = Encoding.Default;
 111 #else
 112                                 try {
 113                                         inputEncoding = Encoding.GetEncoding (WindowsConsole.GetInputCodePage ());
 114                                         outputEncoding = Encoding.GetEncoding (WindowsConsole.GetOutputCodePage ());
 115                                         // ArgumentException and NotSupportedException can be thrown as well
 116                                 } catch {
 117                                         // FIXME: I18N assemblies are not available when compiling mcs
 118                                         // Use Latin 1 as it is fast and UTF-8 is never used as console code page
 119                                         inputEncoding = outputEncoding = Encoding.Default;
 120                                 }
 121 #endif
 122                         } else {
 123                                 //
 124                                 // On Unix systems (128), do not output the
 125                                 // UTF-8 ZWNBSP (zero-width non-breaking space).
 126                                 //
 127                                 int code_page = 0;
 128                                 EncodingHelper.InternalCodePage (ref code_page);
 129
 130                                 if (code_page != -1 && ((code_page & 0x0fffffff) == 3 // UTF8Encoding.UTF8_CODE_PAGE
 131                                         || ((code_page & 0x10000000) != 0)))
 132                                         inputEncoding = outputEncoding = EncodingHelper.UTF8Unmarked;
 133                                 else
 134                                         inputEncoding = outputEncoding = Encoding.Default;
 135                         }
 136
 137                         SetupStreams (inputEncoding, outputEncoding);
 138                 }
 139
 140                 static void SetupStreams (Encoding inputEncoding, Encoding outputEncoding)
 141                 {
 142 #if !NET_2_1
 143                         if (!Environment.IsRunningOnWindows && ConsoleDriver.IsConsole) {
 144                                 StreamWriter w = new CStreamWriter (OpenStandardOutput (0), outputEncoding);
 145                                 w.AutoFlush = true;
 146                                 stdout = TextWriter.Synchronized (w, true);
 147
 148                                 w = new CStreamWriter (OpenStandardOutput (0), outputEncoding);
 149                                 w.AutoFlush = true;
 150                                 stderr = TextWriter.Synchronized (w, true);
 151
 152                                 stdin = new CStreamReader (OpenStandardInput (0), inputEncoding);
 153                         } else {
 154 #endif
 155 // FULL_AOT_RUNTIME is used (instead of MONOTOUCH) since we only want this code when running on
 156 // iOS (simulator or devices) and *not* when running tools (e.g. btouch #12179) that needs to use
 157 // the mscorlib.dll shipped with Xamarin.iOS
 158 #if MONOTOUCH && FULL_AOT_RUNTIME
 159                                 stdout = new NSLogWriter ();
 160 #else
 161                                 stdout = new UnexceptionalStreamWriter (OpenStandardOutput (0), outputEncoding);
 162                                 ((StreamWriter)stdout).AutoFlush = true;
 163 #endif
 164                                 stdout = TextWriter.Synchronized (stdout, true);
 165
 166 #if MONOTOUCH && FULL_AOT_RUNTIME
 167                                 stderr = new NSLogWriter ();
 168 #else
 169                                 stderr = new UnexceptionalStreamWriter (OpenStandardError (0), outputEncoding);
 170                                 ((StreamWriter)stderr).AutoFlush = true;
 171 #endif
 172                                 stderr = TextWriter.Synchronized (stderr, true);
 173
 174                                 stdin = new UnexceptionalStreamReader (OpenStandardInput (0), inputEncoding);
 175                                 stdin = TextReader.Synchronized (stdin);
 176 #if !NET_2_1
 177                         }
 178 #endif
 179
 180 #if MONODROID
 181                         if (LogcatTextWriter.IsRunningOnAndroid ()) {
 182                                 stdout = TextWriter.Synchronized (new LogcatTextWriter ("mono-stdout", stdout));
 183                                 stderr = TextWriter.Synchronized (new LogcatTextWriter ("mono-stderr", stderr));
 184                         }
 185 #endif  // MONODROID
 186
 187                         GC.SuppressFinalize (stdout);
 188                         GC.SuppressFinalize (stderr);
 189                         GC.SuppressFinalize (stdin);
 190                 }
 191
 192                 public static TextWriter Error {
 193                         get {
 194                                 return stderr;
 195                         }
 196                 }
 197
 198                 public static TextWriter Out {
 199                         get {
 200                                 return stdout;
 201                         }
 202                 }
 203
 204                 public static TextReader In {
 205                         get {
 206                                 return stdin;
 207                         }
 208                 }
 209
 210                 private static Stream Open (IntPtr handle, FileAccess access, int bufferSize)
 211                 {
 212                         try {
 213                                 return new FileStream (handle, access, false, bufferSize, false, bufferSize == 0);
 214                         } catch (IOException) {
 215                                 return new NullStream ();
 216                         }
 217                 }
 218
 219                 public static Stream OpenStandardError ()
 220                 {
 221                         return OpenStandardError (0);
 222                 }
 223
 224                 // calling any FileStream constructor with a handle normally
 225                 // requires permissions UnmanagedCode permissions. In this
 226                 // case we assert this permission so the console can be used
 227                 // in partial trust (i.e. without having UnmanagedCode).
 228                 [SecurityPermission (SecurityAction.Assert, UnmanagedCode = true)]
 229                 public static Stream OpenStandardError (int bufferSize)
 230                 {
 231                         return Open (MonoIO.ConsoleError, FileAccess.Write, bufferSize);
 232                 }
 233
 234                 public static Stream OpenStandardInput ()
 235                 {
 236                         return OpenStandardInput (0);
 237                 }
 238
 239                 // calling any FileStream constructor with a handle normally
 240                 // requires permissions UnmanagedCode permissions. In this
 241                 // case we assert this permission so the console can be used
 242                 // in partial trust (i.e. without having UnmanagedCode).
 243                 [SecurityPermission (SecurityAction.Assert, UnmanagedCode = true)]
 244                 public static Stream OpenStandardInput (int bufferSize)
 245                 {
 246                         return Open (MonoIO.ConsoleInput, FileAccess.Read, bufferSize);
 247                 }
 248
 249                 public static Stream OpenStandardOutput ()
 250                 {
 251                         return OpenStandardOutput (0);
 252                 }
 253
 254                 // calling any FileStream constructor with a handle normally
 255                 // requires permissions UnmanagedCode permissions. In this
 256                 // case we assert this permission so the console can be used
 257                 // in partial trust (i.e. without having UnmanagedCode).
 258                 [SecurityPermission (SecurityAction.Assert, UnmanagedCode = true)]
 259                 public static Stream OpenStandardOutput (int bufferSize)
 260                 {
 261                         return Open (MonoIO.ConsoleOutput, FileAccess.Write, bufferSize);
 262                 }
 263
 264                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
 265                 public static void SetError (TextWriter newError)
 266                 {
 267                         if (newError == null)
 268                                 throw new ArgumentNullException ("newError");
 269
 270                         stderr = newError;
 271                 }
 272
 273                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
 274                 public static void SetIn (TextReader newIn)
 275                 {
 276                         if (newIn == null)
 277                                 throw new ArgumentNullException ("newIn");
 278
 279                         stdin = newIn;
 280                 }
 281
 282                 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
 283                 public static void SetOut (TextWriter newOut)
 284                 {
 285                         if (newOut == null)
 286                                 throw new ArgumentNullException ("newOut");
 287
 288                         stdout = newOut;
 289                 }
 290
 291                 public static void Write (bool value)
 292                 {
 293                         stdout.Write (value);
 294                 }
 295
 296                 public static void Write (char value)
 297                 {
 298                         stdout.Write (value);
 299                 }
 300
 301                 public static void Write (char[] buffer)
 302                 {
 303                         stdout.Write (buffer);
 304                 }
 305
 306                 public static void Write (decimal value)
 307                 {
 308                         stdout.Write (value);
 309                 }
 310
 311                 public static void Write (double value)
 312                 {
 313                         stdout.Write (value);
 314                 }
 315
 316                 public static void Write (int value)
 317                 {
 318                         stdout.Write (value);
 319                 }
 320
 321                 public static void Write (long value)
 322                 {
 323                         stdout.Write (value);
 324                 }
 325
 326                 public static void Write (object value)
 327                 {
 328                         stdout.Write (value);
 329                 }
 330
 331                 public static void Write (float value)
 332                 {
 333                         stdout.Write (value);
 334                 }
 335
 336                 public static void Write (string value)
 337                 {
 338                         stdout.Write (value);
 339                 }
 340
 341                 [CLSCompliant (false)]
 342                 public static void Write (uint value)
 343                 {
 344                         stdout.Write (value);
 345                 }
 346
 347                 [CLSCompliant (false)]
 348                 public static void Write (ulong value)
 349                 {
 350                         stdout.Write (value);
 351                 }
 352
 353                 public static void Write (string format, object arg0)
 354                 {
 355                         stdout.Write (format, arg0);
 356                 }
 357
 358                 public static void Write (string format, params object[] arg)
 359                 {
 360                         if (arg == null)
 361                                 stdout.Write (format);
 362                         else
 363                                 stdout.Write (format, arg);
 364                 }
 365
 366                 public static void Write (char[] buffer, int index, int count)
 367                 {
 368                         stdout.Write (buffer, index, count);
 369                 }
 370
 371                 public static void Write (string format, object arg0, object arg1)
 372                 {
 373                         stdout.Write (format, arg0, arg1);
 374                 }
 375
 376                 public static void Write (string format, object arg0, object arg1, object arg2 )
 377                 {
 378                         stdout.Write (format, arg0, arg1, arg2);
 379                 }
 380
 381                 [CLSCompliant (false)]
 382                 public static void Write (string format, object arg0, object arg1, object arg2, object arg3, __arglist)
 383                 {
 384                         ArgIterator iter = new ArgIterator (__arglist);
 385                         int argCount = iter.GetRemainingCount();
 386
 387                         object[] args = new object [argCount + 4];
 388                         args [0] = arg0;
 389                         args [1] = arg1;
 390                         args [2] = arg2;
 391                         args [3] = arg3;
 392                         for (int i = 0; i < argCount; i++) {
 393                                 TypedReference typedRef = iter.GetNextArg ();
 394                                 args [i + 4] = TypedReference.ToObject (typedRef);
 395                         }
 396
 397                         stdout.Write (String.Format (format, args));
 398                 }
 399
 400                 public static void WriteLine ()
 401                 {
 402                         stdout.WriteLine ();
 403                 }
 404
 405                 public static void WriteLine (bool value)
 406                 {
 407                         stdout.WriteLine (value);
 408                 }
 409
 410                 public static void WriteLine (char value)
 411                 {
 412                         stdout.WriteLine (value);
 413                 }
 414
 415                 public static void WriteLine (char[] buffer)
 416                 {
 417                         stdout.WriteLine (buffer);
 418                 }
 419
 420                 public static void WriteLine (decimal value)
 421                 {
 422                         stdout.WriteLine (value);
 423                 }
 424
 425                 public static void WriteLine (double value)
 426                 {
 427                         stdout.WriteLine (value);
 428                 }
 429
 430                 public static void WriteLine (int value)
 431                 {
 432                         stdout.WriteLine (value);
 433                 }
 434
 435                 public static void WriteLine (long value)
 436                 {
 437                         stdout.WriteLine (value);
 438                 }
 439
 440                 public static void WriteLine (object value)
 441                 {
 442                         stdout.WriteLine (value);
 443                 }
 444
 445                 public static void WriteLine (float value)
 446                 {
 447                         stdout.WriteLine (value);
 448                 }
 449
 450                 public static void WriteLine (string value)
 451                 {
 452                         stdout.WriteLine (value);
 453                 }
 454
 455                 [CLSCompliant (false)]
 456                 public static void WriteLine (uint value)
 457                 {
 458                         stdout.WriteLine (value);
 459                 }
 460
 461                 [CLSCompliant (false)]
 462                 public static void WriteLine (ulong value)
 463                 {
 464                         stdout.WriteLine (value);
 465                 }
 466
 467                 public static void WriteLine (string format, object arg0)
 468                 {
 469                         stdout.WriteLine (format, arg0);
 470                 }
 471
 472                 public static void WriteLine (string format, params object[] arg)
 473                 {
 474                         if (arg == null)
 475                                 stdout.WriteLine (format);
 476                         else
 477                                 stdout.WriteLine (format, arg);
 478                 }
 479
 480                 public static void WriteLine (char[] buffer, int index, int count)
 481                 {
 482                         stdout.WriteLine (buffer, index, count);
 483                 }
 484
 485                 public static void WriteLine (string format, object arg0, object arg1)
 486                 {
 487                         stdout.WriteLine (format, arg0, arg1);
 488                 }
 489
 490                 public static void WriteLine (string format, object arg0, object arg1, object arg2)
 491                 {
 492                         stdout.WriteLine (format, arg0, arg1, arg2);
 493                 }
 494
 495                 [CLSCompliant (false)]
 496                 public static void WriteLine (string format, object arg0, object arg1, object arg2, object arg3, __arglist)
 497                 {
 498                         ArgIterator iter = new ArgIterator (__arglist);
 499                         int argCount = iter.GetRemainingCount();
 500
 501                         object[] args = new object [argCount + 4];
 502                         args [0] = arg0;
 503                         args [1] = arg1;
 504                         args [2] = arg2;
 505                         args [3] = arg3;
 506                         for (int i = 0; i < argCount; i++) {
 507                                 TypedReference typedRef = iter.GetNextArg ();
 508                                 args [i + 4] = TypedReference.ToObject (typedRef);
 509                         }
 510
 511                         stdout.WriteLine (String.Format (format, args));
 512                 }
 513
 514 #if !NET_2_1
 515                 public static int Read ()
 516                 {
 517                         if ((stdin is CStreamReader) && ConsoleDriver.IsConsole) {
 518                                 return ConsoleDriver.Read ();
 519                         } else {
 520                                 return stdin.Read ();
 521                         }
 522                 }
 523
 524                 public static string ReadLine ()
 525                 {
 526                         if ((stdin is CStreamReader) && ConsoleDriver.IsConsole) {
 527                                 return ConsoleDriver.ReadLine ();
 528                         } else {
 529                                 return stdin.ReadLine ();
 530                         }
 531                 }
 532 #else
 533                 public static int Read ()
 534                 {
 535                         return stdin.Read ();
 536                 }
 537
 538                 public static string ReadLine ()
 539                 {
 540                         return stdin.ReadLine ();
 541                 }
 542
 543 #endif
 544
 545 #if !NET_2_1
 546                 // FIXME: Console should use these encodings when changed
 547                 static Encoding inputEncoding;
 548                 static Encoding outputEncoding;
 549
 550                 public static Encoding InputEncoding {
 551                         get { return inputEncoding; }
 552                         set {
 553                                 inputEncoding = value;
 554                                 SetupStreams (inputEncoding, outputEncoding);
 555                         }
 556                 }
 557
 558                 public static Encoding OutputEncoding {
 559                         get { return outputEncoding; }
 560                         set {
 561                                 outputEncoding = value;
 562                                 SetupStreams (inputEncoding, outputEncoding);
 563                         }
 564                 }
 565
 566                 public static ConsoleColor BackgroundColor {
 567                         get { return ConsoleDriver.BackgroundColor; }
 568                         set { ConsoleDriver.BackgroundColor = value; }
 569                 }
 570
 571                 public static int BufferHeight {
 572                         get { return ConsoleDriver.BufferHeight; }
 573                         [MonoLimitation ("Implemented only on Windows")]
 574                         set { ConsoleDriver.BufferHeight = value; }
 575                 }
 576
 577                 public static int BufferWidth {
 578                         get { return ConsoleDriver.BufferWidth; }
 579                         [MonoLimitation ("Implemented only on Windows")]
 580                         set { ConsoleDriver.BufferWidth = value; }
 581                 }
 582
 583                 [MonoLimitation ("Implemented only on Windows")]
 584                 public static bool CapsLock {
 585                         get { return ConsoleDriver.CapsLock; }
 586                 }
 587
 588                 public static int CursorLeft {
 589                         get { return ConsoleDriver.CursorLeft; }
 590                         set { ConsoleDriver.CursorLeft = value; }
 591                 }
 592
 593                 public static int CursorTop {
 594                         get { return ConsoleDriver.CursorTop; }
 595                         set { ConsoleDriver.CursorTop = value; }
 596                 }
 597
 598                 public static int CursorSize {
 599                         get { return ConsoleDriver.CursorSize; }
 600                         set { ConsoleDriver.CursorSize = value; }
 601                 }
 602
 603                 public static bool CursorVisible {
 604                         get { return ConsoleDriver.CursorVisible; }
 605                         set { ConsoleDriver.CursorVisible = value; }
 606                 }
 607
 608                 public static ConsoleColor ForegroundColor {
 609                         get { return ConsoleDriver.ForegroundColor; }
 610                         set { ConsoleDriver.ForegroundColor = value; }
 611                 }
 612
 613                 public static bool KeyAvailable {
 614                         get { return ConsoleDriver.KeyAvailable; }
 615                 }
 616
 617                 public static int LargestWindowHeight {
 618                         get { return ConsoleDriver.LargestWindowHeight; }
 619                 }
 620
 621                 public static int LargestWindowWidth {
 622                         get { return ConsoleDriver.LargestWindowWidth; }
 623                 }
 624
 625                 [MonoLimitation ("Only works on windows")]
 626                 public static bool NumberLock {
 627                         get { return ConsoleDriver.NumberLock; }
 628                 }
 629
 630                 public static string Title {
 631                         get { return ConsoleDriver.Title; }
 632                         set { ConsoleDriver.Title = value; }
 633                 }
 634
 635                 public static bool TreatControlCAsInput {
 636                         get { return ConsoleDriver.TreatControlCAsInput; }
 637                         set { ConsoleDriver.TreatControlCAsInput = value; }
 638                 }
 639
 640                 [MonoLimitation ("Only works on windows")]
 641                 public static int WindowHeight {
 642                         get { return ConsoleDriver.WindowHeight; }
 643                         set { ConsoleDriver.WindowHeight = value; }
 644                 }
 645
 646                 [MonoLimitation ("Only works on windows")]
 647                 public static int WindowLeft {
 648                         get { return ConsoleDriver.WindowLeft; }
 649                         set { ConsoleDriver.WindowLeft = value; }
 650                 }
 651
 652                 [MonoLimitation ("Only works on windows")]
 653                 public static int WindowTop {
 654                         get { return ConsoleDriver.WindowTop; }
 655                         set { ConsoleDriver.WindowTop = value; }
 656                 }
 657
 658                 [MonoLimitation ("Only works on windows")]
 659                 public static int WindowWidth {
 660                         get { return ConsoleDriver.WindowWidth; }
 661                         set { ConsoleDriver.WindowWidth = value; }
 662                 }
 663
 664                 public static bool IsErrorRedirected {
 665                         get {
 666                                 return ConsoleDriver.IsErrorRedirected;
 667                         }
 668                 }
 669
 670                 public static bool IsOutputRedirected {
 671                         get {
 672                                 return ConsoleDriver.IsOutputRedirected;
 673                         }
 674                 }
 675
 676                 public static bool IsInputRedirected {
 677                         get {
 678                                 return ConsoleDriver.IsInputRedirected;
 679                         }
 680                 }
 681
 682                 public static void Beep ()
 683                 {
 684                         Beep (1000, 500);
 685                 }
 686
 687                 public static void Beep (int frequency, int duration)
 688                 {
 689                         if (frequency < 37 || frequency > 32767)
 690                                 throw new ArgumentOutOfRangeException ("frequency");
 691
 692                         if (duration <= 0)
 693                                 throw new ArgumentOutOfRangeException ("duration");
 694
 695                         ConsoleDriver.Beep (frequency, duration);
 696                 }
 697
 698                 public static void Clear ()
 699                 {
 700                         ConsoleDriver.Clear ();
 701                 }
 702
 703                 [MonoLimitation ("Implemented only on Windows")]
 704                 public static void MoveBufferArea (int sourceLeft, int sourceTop, int sourceWidth, int sourceHeight,
 705                                                 int targetLeft, int targetTop)
 706                 {
 707                         ConsoleDriver.MoveBufferArea (sourceLeft, sourceTop, sourceWidth, sourceHeight, targetLeft, targetTop);
 708                 }
 709
 710                 [MonoLimitation ("Implemented only on Windows")]
 711                 public static void MoveBufferArea (int sourceLeft, int sourceTop, int sourceWidth, int sourceHeight,
 712                                                 int targetLeft, int targetTop, Char sourceChar,
 713                                                 ConsoleColor sourceForeColor, ConsoleColor sourceBackColor)
 714                 {
 715                         ConsoleDriver.MoveBufferArea (sourceLeft, sourceTop, sourceWidth, sourceHeight, targetLeft, targetTop,
 716                                                         sourceChar, sourceForeColor, sourceBackColor);
 717                 }
 718
 719                 public static ConsoleKeyInfo ReadKey ()
 720                 {
 721                         return ReadKey (false);
 722                 }
 723
 724                 public static ConsoleKeyInfo ReadKey (bool intercept)
 725                 {
 726                         return ConsoleDriver.ReadKey (intercept);
 727                 }
 728
 729                 public static void ResetColor ()
 730                 {
 731                         ConsoleDriver.ResetColor ();
 732                 }
 733
 734                 [MonoLimitation ("Only works on windows")]
 735                 public static void SetBufferSize (int width, int height)
 736                 {
 737                         ConsoleDriver.SetBufferSize (width, height);
 738                 }
 739
 740                 public static void SetCursorPosition (int left, int top)
 741                 {
 742                         ConsoleDriver.SetCursorPosition (left, top);
 743                 }
 744
 745                 public static void SetWindowPosition (int left, int top)
 746                 {
 747                         ConsoleDriver.SetWindowPosition (left, top);
 748                 }
 749
 750                 public static void SetWindowSize (int width, int height)
 751                 {
 752                         ConsoleDriver.SetWindowSize (width, height);
 753                 }
 754
 755                 static ConsoleCancelEventHandler cancel_event;
 756                 public static event ConsoleCancelEventHandler CancelKeyPress {
 757                         add {
 758                                 if (ConsoleDriver.Initialized == false)
 759                                         ConsoleDriver.Init ();
 760
 761                                 cancel_event += value;
 762
 763                                 if (Environment.IsRunningOnWindows && !WindowsConsole.ctrlHandlerAdded)
 764                                         WindowsConsole.AddCtrlHandler();
 765                         }
 766                         remove {
 767                                 if (ConsoleDriver.Initialized == false)
 768                                         ConsoleDriver.Init ();
 769
 770                                 cancel_event -= value;
 771
 772                                 if (cancel_event == null && Environment.IsRunningOnWindows)
 773                                 {
 774                                         // Need to remove our hook if there's nothing left in the event
 775                                         if (WindowsConsole.ctrlHandlerAdded)
 776                                                 WindowsConsole.RemoveCtrlHandler();
 777                                 }
 778                         }
 779                 }
 780
 781                 delegate void InternalCancelHandler ();
 782
 783 #pragma warning disable 414
 784                 //
 785                 // Used by console-io.c
 786                 //
 787                 static readonly InternalCancelHandler cancel_handler = new InternalCancelHandler (DoConsoleCancelEvent);
 788 #pragma warning restore 414
 789
 790                 internal static void DoConsoleCancelEvent ()
 791                 {
 792                         bool exit = true;
 793                         if (cancel_event != null) {
 794                                 ConsoleCancelEventArgs args = new ConsoleCancelEventArgs (ConsoleSpecialKey.ControlC);
 795                                 Delegate [] delegates = cancel_event.GetInvocationList ();
 796                                 foreach (ConsoleCancelEventHandler d in delegates){
 797                                         try {
 798                                                 // Sender is always null here.
 799                                                 d (null, args);
 800                                         } catch {} // Ignore any exception.
 801                                 }
 802                                 exit = !args.Cancel;
 803                         }
 804
 805                         if (exit)
 806                                 Environment.Exit (58);
 807                 }
 808 #endif
 809         }
 810 }
 811