ReadKey(ReadKeyOptions options)
{
if ((options & (ReadKeyOptions.IncludeKeyDown | ReadKeyOptions.IncludeKeyUp)) == 0)
{
throw PSTraceSource.NewArgumentException("options", ConsoleHostRawUserInterfaceStrings.InvalidReadKeyOptionsError);
}
// keyInfo is initialized in the below if-else statement
KeyInfo keyInfo;
if (cachedKeyEvent.RepeatCount > 0)
{
// Ctrl-C is not allowed and Ctrl-C is cached.
if (((options & ReadKeyOptions.AllowCtrlC) == 0) && cachedKeyEvent.UnicodeChar == (char)3)
{
// Ctrl-C is in the cache, stop pipeline immediately
cachedKeyEvent.RepeatCount--;
throw NewPipelineStoppedException();
}
// If IncludeKeyUp is not set and cached key events are KeyUp OR
// IncludeKeyDown is not set and cached key events are KeyDown, clear the cache
if ((((options & ReadKeyOptions.IncludeKeyUp) == 0) && !cachedKeyEvent.KeyDown) ||
(((options & ReadKeyOptions.IncludeKeyDown) == 0) && cachedKeyEvent.KeyDown))
{
cachedKeyEvent.RepeatCount = 0;
}
}
if (cachedKeyEvent.RepeatCount > 0)
{
KEY_EVENT_RECORDToKeyInfo(cachedKeyEvent, out keyInfo);
cachedKeyEvent.RepeatCount--;
}
else
{
ConsoleHandle handle = ConsoleControl.GetConioDeviceHandle();
ConsoleControl.INPUT_RECORD[] inputRecords = new ConsoleControl.INPUT_RECORD[1];
ConsoleControl.ConsoleModes originalMode = ConsoleControl.GetMode(handle);
// set input mode to exclude mouse or window events
// turn off ProcessedInput flag to handle ctrl-c
ConsoleControl.ConsoleModes newMode = originalMode &
~ConsoleControl.ConsoleModes.WindowInput &
~ConsoleControl.ConsoleModes.MouseInput &
~ConsoleControl.ConsoleModes.ProcessedInput;
try
{
ConsoleControl.SetMode(handle, newMode);
while (true)
{
int actualNumberOfInput = ConsoleControl.ReadConsoleInput(handle, ref inputRecords);
Dbg.Assert(actualNumberOfInput == 1,
string.Format(CultureInfo.InvariantCulture, "ReadConsoleInput returns {0} number of input event records",
actualNumberOfInput));
if (actualNumberOfInput == 1)
{
if (((ConsoleControl.InputRecordEventTypes)inputRecords[0].EventType) ==
ConsoleControl.InputRecordEventTypes.KEY_EVENT)
{
Dbg.Assert((inputRecords[0].KeyEvent.KeyDown && inputRecords[0].KeyEvent.RepeatCount != 0) ||
!inputRecords[0].KeyEvent.KeyDown,
string.Format(CultureInfo.InvariantCulture, "ReadConsoleInput returns a KeyEvent that is KeyDown and RepeatCount 0"));
if (inputRecords[0].KeyEvent.RepeatCount == 0)
{
// Sometimes Win32 ReadConsoleInput returns a KeyEvent record whose
// RepeatCount is zero. This type of record does not
// represent a keystroke.
continue;
}
// Ctrl-C is not allowed and Ctrl-C is input
if ((options & ReadKeyOptions.AllowCtrlC) == 0 &&
inputRecords[0].KeyEvent.UnicodeChar == (char)3)
{
CacheKeyEvent(inputRecords[0].KeyEvent, ref cachedKeyEvent);
throw NewPipelineStoppedException();
}
// if KeyDown events are wanted and event is KeyDown OR
// KeyUp events are wanted and event is KeyUp
if ((((options & ReadKeyOptions.IncludeKeyDown) != 0) &&
inputRecords[0].KeyEvent.KeyDown) ||
(((options & ReadKeyOptions.IncludeKeyUp) != 0) &&
!inputRecords[0].KeyEvent.KeyDown))
{
CacheKeyEvent(inputRecords[0].KeyEvent, ref cachedKeyEvent);
KEY_EVENT_RECORDToKeyInfo(inputRecords[0].KeyEvent, out keyInfo);
break;
}
}
}
}
}
finally
{
ConsoleControl.SetMode(handle, originalMode);
}
}
if ((options & ReadKeyOptions.NoEcho) == 0)
{
parent.WriteToConsole(
keyInfo.Character.ToString(),
true);
}
return keyInfo;
}
public override KeyInfo ReadKey(ReadKeyOptions options)
{
KeyInfo keyInfo;
if ((options & (ReadKeyOptions.IncludeKeyDown | ReadKeyOptions.IncludeKeyUp)) != 0)
{
if (this.cachedKeyEvent.RepeatCount > 0)
{
if ((options & ReadKeyOptions.AllowCtrlC) != 0 || this.cachedKeyEvent.UnicodeChar != '\u0003')
{
if ((options & ReadKeyOptions.IncludeKeyUp) == 0 && !this.cachedKeyEvent.KeyDown || (options & ReadKeyOptions.IncludeKeyDown) == 0 && this.cachedKeyEvent.KeyDown)
{
this.cachedKeyEvent.RepeatCount = 0;
}
}
else
{
ConsoleControl.KEY_EVENT_RECORD kEYEVENTRECORDPointer = this.cachedKeyEvent;
this.cachedKeyEvent.RepeatCount = (ushort)(this.cachedKeyEvent.RepeatCount - 1);
throw this.NewPipelineStoppedException();
}
}
if (this.cachedKeyEvent.RepeatCount <= 0)
{
SafeFileHandle inputHandle = ConsoleControl.GetInputHandle();
ConsoleControl.INPUT_RECORD[] nPUTRECORDArray = new ConsoleControl.INPUT_RECORD[1];
ConsoleControl.ConsoleModes mode = ConsoleControl.GetMode(inputHandle);
ConsoleControl.ConsoleModes consoleMode = mode & (ConsoleControl.ConsoleModes.ProcessedInput | ConsoleControl.ConsoleModes.LineInput | ConsoleControl.ConsoleModes.EchoInput | ConsoleControl.ConsoleModes.MouseInput | ConsoleControl.ConsoleModes.Insert | ConsoleControl.ConsoleModes.QuickEdit | ConsoleControl.ConsoleModes.Extended | ConsoleControl.ConsoleModes.AutoPosition | ConsoleControl.ConsoleModes.ProcessedOutput | ConsoleControl.ConsoleModes.WrapEndOfLine) & (ConsoleControl.ConsoleModes.ProcessedInput | ConsoleControl.ConsoleModes.LineInput | ConsoleControl.ConsoleModes.EchoInput | ConsoleControl.ConsoleModes.WindowInput | ConsoleControl.ConsoleModes.Insert | ConsoleControl.ConsoleModes.QuickEdit | ConsoleControl.ConsoleModes.Extended | ConsoleControl.ConsoleModes.AutoPosition | ConsoleControl.ConsoleModes.ProcessedOutput | ConsoleControl.ConsoleModes.WrapEndOfLine) & (ConsoleControl.ConsoleModes.LineInput | ConsoleControl.ConsoleModes.EchoInput | ConsoleControl.ConsoleModes.WindowInput | ConsoleControl.ConsoleModes.MouseInput | ConsoleControl.ConsoleModes.Insert | ConsoleControl.ConsoleModes.QuickEdit | ConsoleControl.ConsoleModes.Extended | ConsoleControl.ConsoleModes.AutoPosition | ConsoleControl.ConsoleModes.WrapEndOfLine);
try
{
ConsoleControl.SetMode(inputHandle, consoleMode);
do
{
Label0:
int num = ConsoleControl.ReadConsoleInput(inputHandle, ref nPUTRECORDArray);
if (num == 1 && nPUTRECORDArray[0].EventType == 1 && nPUTRECORDArray[0].KeyEvent.RepeatCount != 0)
{
if ((options & ReadKeyOptions.AllowCtrlC) != 0 || nPUTRECORDArray[0].KeyEvent.UnicodeChar != '\u0003')
{
continue;
}
ConsoleHostRawUserInterface.CacheKeyEvent(nPUTRECORDArray[0].KeyEvent, ref this.cachedKeyEvent);
throw this.NewPipelineStoppedException();
}
else
{
goto Label0;
}
}
while (((options & ReadKeyOptions.IncludeKeyDown) == 0 || !nPUTRECORDArray[0].KeyEvent.KeyDown) && ((options & ReadKeyOptions.IncludeKeyUp) == 0 || nPUTRECORDArray[0].KeyEvent.KeyDown));
ConsoleHostRawUserInterface.CacheKeyEvent(nPUTRECORDArray[0].KeyEvent, ref this.cachedKeyEvent);
ConsoleHostRawUserInterface.KEY_EVENT_RECORDToKeyInfo(nPUTRECORDArray[0].KeyEvent, out keyInfo);
}
finally
{
ConsoleControl.SetMode(inputHandle, mode);
}
}
else
{
ConsoleHostRawUserInterface.KEY_EVENT_RECORDToKeyInfo(this.cachedKeyEvent, out keyInfo);
this.cachedKeyEvent.RepeatCount = (ushort)(this.cachedKeyEvent.RepeatCount - 1);
}
if ((options & ReadKeyOptions.NoEcho) == 0)
{
char character = keyInfo.Character;
this.parent.WriteToConsole(character.ToString(CultureInfo.CurrentCulture), true);
}
return keyInfo;
}
else
{
throw PSTraceSource.NewArgumentException("options", "ConsoleHostRawUserInterfaceStrings", "InvalidReadKeyOptionsError", new object[0]);
}
}
