private static void WriteBlankLines(int count, int top)
{
var blanks = new CHAR_INFO[count * Console.BufferWidth];
for (int i = 0; i < blanks.Length; i++)
{
blanks[i].BackgroundColor = Console.BackgroundColor;
blanks[i].ForegroundColor = Console.ForegroundColor;
blanks[i].UnicodeChar = ' ';
}
WriteBufferLines(blanks, ref top);
}
/// <summary>
/// Turn on demo mode (display events like keys pressed)
/// </summary>
public static void EnableDemoMode(ConsoleKeyInfo? key = null, object arg = null)
{
const int windowLineCount = 4; // 1 blank line, 2 border lines, 1 line of info
_singleton._captureKeys = true;
_singleton._demoMode = true;
_singleton._demoWindowLineCount = windowLineCount;
var newBuffer = new CHAR_INFO[_singleton._consoleBuffer.Length + (windowLineCount * _singleton._bufferWidth)];
Array.Copy(_singleton._consoleBuffer, newBuffer,
_singleton._initialX + (_singleton.Options.ExtraPromptLineCount * _singleton._bufferWidth));
_singleton._consoleBuffer = newBuffer;
_singleton.Render();
}
/// <summary>
/// Turn on demo mode (display events like keys pressed)
/// </summary>
public static void EnableDemoMode(ConsoleKeyInfo? key = null, object arg = null)
{
const int windowLineCount = 4; // 1 blank line, 2 border lines, 1 line of info
_singleton._captureKeys = true;
_singleton._demoMode = true;
_singleton._demoWindowLineCount = windowLineCount;
var newBuffer = new CHAR_INFO[_singleton._consoleBuffer.Length + (windowLineCount * _singleton._bufferWidth)];
Array.Copy(_singleton._consoleBuffer, newBuffer,
_singleton._initialX + (_singleton.Options.ExtraPromptLineCount * _singleton._bufferWidth));
_singleton._consoleBuffer = newBuffer;
_singleton.Render();
}
private static void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short) lines,
Left = 0,
Bottom = (short) (Console.BufferHeight - 1),
Right = (short)Console.BufferWidth
};
var destinationOrigin = new COORD {X = 0, Y = 0};
var fillChar = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
NativeMethods.ScrollConsoleScreenBuffer(handle, ref scrollRectangle, IntPtr.Zero, destinationOrigin, ref fillChar);
}
private void ClearDemoWindow()
{
int bufferWidth = Console.BufferWidth;
var charInfoBuffer = new CHAR_INFO[bufferWidth * 3];
for (int i = 0; i < charInfoBuffer.Length; i++)
{
charInfoBuffer[i].UnicodeChar = ' ';
charInfoBuffer[i].ForegroundColor = _initialForegroundColor;
charInfoBuffer[i].BackgroundColor= _initialBackgroundColor;
}
int bufferLineCount = ConvertOffsetToCoordinates(_buffer.Length).Y - _initialY + 1;
int y = _initialY + bufferLineCount + 1;
WriteBufferLines(charInfoBuffer, ref y);
}
private void InteractiveHistorySearch(int direction)
{
SaveCurrentLine();
// Add a status line that will contain the search prompt and string
_statusLinePrompt = direction > 0 ? _forwardISearchPrompt : _backwardISearchPrompt;
_statusBuffer.Append("_");
Render(); // Render prompt
InteractiveHistorySearchLoop(direction);
// Remove our status line
_statusBuffer.Clear();
_statusLinePrompt = null;
_emphasisStart = -1;
_emphasisLength = 0;
#if FALSE
int promptStart = _bufferWidth * Options.ExtraPromptLineCount;
int promptWidth = _initialX;
// Copy the prompt (ignoring the possible extra lines which we'll leave alone)
var savedPrompt = new CHAR_INFO[promptWidth];
Array.Copy(_consoleBuffer, promptStart, savedPrompt, 0, promptWidth);
string newPrompt = "(reverse-i-search)`': ";
_initialX = newPrompt.Length;
int i, j;
for (i = promptStart, j = 0; j < newPrompt.Length; i++, j++)
{
_consoleBuffer[i].UnicodeChar = newPrompt[j];
_consoleBuffer[i].BackgroundColor = Console.BackgroundColor;
_consoleBuffer[i].ForegroundColor = Console.ForegroundColor;
}
InteractiveHistorySearchLoop(direction);
// Restore the original prompt
_initialX = promptWidth;
Array.Copy(savedPrompt, 0, _consoleBuffer, promptStart, savedPrompt.Length);
#endif
Render();
}
private static CHAR_INFO[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[Console.BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)Console.BufferWidth,
Y = (short)count};
var readBufferCoord = new COORD {X = 0, Y = 0};
var readRegion = new SMALL_RECT
{
Top = (short)top,
Left = 0,
Bottom = (short)(top + count),
Right = (short)(Console.BufferWidth - 1)
};
NativeMethods.ReadConsoleOutput(handle, result,
readBufferSize, readBufferCoord, ref readRegion);
return result;
}
private void MaybeEmphasize(ref CHAR_INFO charInfo, int i, ConsoleColor foregroundColor, ConsoleColor backgroundColor)
{
if (i >= _emphasisStart && i < (_emphasisStart + _emphasisLength))
{
backgroundColor = _options.EmphasisBackgroundColor;
foregroundColor = _options.EmphasisForegroundColor;
}
else if (_visualSelectionCommandCount > 0 && InRegion(i))
{
// We can't quite emulate real console selection because it inverts
// based on actual screen colors, our pallete is limited. The choice
// to invert only the lower 3 bits to change the color is somewhat
// but looks best with the 2 default color schemes - starting PowerShell
// from it's shortcut or from a cmd shortcut.
foregroundColor = (ConsoleColor)((int)foregroundColor ^ 7);
backgroundColor = (ConsoleColor)((int)backgroundColor ^ 7);
}
charInfo.ForegroundColor = foregroundColor;
charInfo.BackgroundColor = backgroundColor;
}
private void Initialize()
{
_buffer.Clear();
_edits = new List <EditItem>();
_undoEditIndex = 0;
_editGroupCount = 0;
_pushedEditGroupCount.Clear();
_current = 0;
_mark = 0;
_emphasisStart = -1;
_emphasisLength = 0;
_tokens = null;
_parseErrors = null;
_inputAccepted = false;
_initialX = Console.CursorLeft;
_initialY = Console.CursorTop - Options.ExtraPromptLineCount;
_initialBackgroundColor = Console.BackgroundColor;
_initialForegroundColor = Console.ForegroundColor;
_space = new CHAR_INFO(' ', _initialForegroundColor, _initialBackgroundColor);
_bufferWidth = Console.BufferWidth;
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_visualSelectionCommandCount = 0;
_consoleBuffer = ReadBufferLines(_initialY, 1 + Options.ExtraPromptLineCount);
_lastRenderTime = Stopwatch.StartNew();
if (_getNextHistoryIndex > 0)
{
_currentHistoryIndex = _getNextHistoryIndex;
UpdateFromHistory(moveCursor: true);
_getNextHistoryIndex = 0;
}
}
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
ref SMALL_RECT lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
public static extern bool WriteConsoleOutput(IntPtr consoleOutput, CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT writeRegion);
private static void InvertSelectedCompletion(CHAR_INFO[] buffer, int selectedItem, int menuColumnWidth, int menuRows)
{
var selectedX = selectedItem / menuRows;
var selectedY = selectedItem - (selectedX * menuRows);
var start = selectedY * Console.BufferWidth + selectedX * menuColumnWidth;
for (int i = 0; i < menuColumnWidth; i++)
{
int j = i + start;
buffer[j].ForegroundColor = (ConsoleColor)((int)buffer[j].ForegroundColor ^ 7);
buffer[j].BackgroundColor = (ConsoleColor)((int)buffer[j].BackgroundColor ^ 7);
}
}
private void ReallyRender()
{
_renderForDemoNeeded = false;
var text = ParseInput();
int statusLineCount = GetStatusLineCount();
int bufferLineCount = ConvertOffsetToCoordinates(text.Length).Y - _initialY + 1 + _demoWindowLineCount + statusLineCount;
int bufferWidth = Console.BufferWidth;
if (_consoleBuffer.Length != bufferLineCount * bufferWidth)
{
var newBuffer = new CHAR_INFO[bufferLineCount * bufferWidth];
Array.Copy(_consoleBuffer, newBuffer, _initialX + (Options.ExtraPromptLineCount * _bufferWidth));
if (_consoleBuffer.Length > bufferLineCount * bufferWidth)
{
// Need to erase the extra lines that we won't draw again
for (int i = bufferLineCount * bufferWidth; i < _consoleBuffer.Length; i++)
{
_consoleBuffer[i] = _space;
}
WriteBufferLines(_consoleBuffer, ref _initialY);
}
_consoleBuffer = newBuffer;
}
var tokenStack = new Stack <SavedTokenState>();
tokenStack.Push(new SavedTokenState
{
Tokens = _tokens,
Index = 0,
BackgroundColor = _initialBackgroundColor,
ForegroundColor = _initialForegroundColor
});
int j = _initialX + (_bufferWidth * Options.ExtraPromptLineCount);
var backgroundColor = _initialBackgroundColor;
var foregroundColor = _initialForegroundColor;
for (int i = 0; i < text.Length; i++)
{
// Figure out the color of the character - if it's in a token,
// use the tokens color otherwise use the initial color.
var state = tokenStack.Peek();
var token = state.Tokens[state.Index];
if (i == token.Extent.EndOffset)
{
if (token == state.Tokens[state.Tokens.Length - 1])
{
tokenStack.Pop();
state = tokenStack.Peek();
}
foregroundColor = state.ForegroundColor;
backgroundColor = state.BackgroundColor;
token = state.Tokens[++state.Index];
}
if (i == token.Extent.StartOffset)
{
GetTokenColors(token, out foregroundColor, out backgroundColor);
var stringToken = token as StringExpandableToken;
if (stringToken != null)
{
// We might have nested tokens.
if (stringToken.NestedTokens != null && stringToken.NestedTokens.Any())
{
var tokens = new Token[stringToken.NestedTokens.Count + 1];
stringToken.NestedTokens.CopyTo(tokens, 0);
// NestedTokens doesn't have an "EOS" token, so we use
// the string literal token for that purpose.
tokens[tokens.Length - 1] = stringToken;
tokenStack.Push(new SavedTokenState
{
Tokens = tokens,
Index = 0,
BackgroundColor = backgroundColor,
ForegroundColor = foregroundColor
});
}
}
}
if (text[i] == '\n')
{
while ((j % bufferWidth) != 0)
{
_consoleBuffer[j++] = _space;
}
for (int k = 0; k < Options.ContinuationPrompt.Length; k++, j++)
{
_consoleBuffer[j].UnicodeChar = Options.ContinuationPrompt[k];
_consoleBuffer[j].ForegroundColor = Options.ContinuationPromptForegroundColor;
_consoleBuffer[j].BackgroundColor = Options.ContinuationPromptBackgroundColor;
}
}
else if (char.IsControl(text[i]))
{
_consoleBuffer[j].UnicodeChar = '^';
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
_consoleBuffer[j].UnicodeChar = (char)('@' + text[i]);
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
else
{
_consoleBuffer[j].UnicodeChar = text[i];
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
}
for (; j < (_consoleBuffer.Length - ((statusLineCount + _demoWindowLineCount) * _bufferWidth)); j++)
{
_consoleBuffer[j] = _space;
}
if (_statusLinePrompt != null)
{
for (int i = 0; i < _statusLinePrompt.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusLinePrompt[i];
_consoleBuffer[j].ForegroundColor = Console.ForegroundColor;
_consoleBuffer[j].BackgroundColor = Console.BackgroundColor;
}
for (int i = 0; i < _statusBuffer.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusBuffer[i];
_consoleBuffer[j].ForegroundColor = Console.ForegroundColor;
_consoleBuffer[j].BackgroundColor = Console.BackgroundColor;
}
for (; j < (_consoleBuffer.Length - (_demoWindowLineCount * _bufferWidth)); j++)
{
_consoleBuffer[j] = _space;
}
}
if (_demoMode)
{
RenderDemoWindow(j);
}
bool rendered = false;
if (_parseErrors.Length > 0)
{
int promptChar = _initialX - 1 + (_bufferWidth * Options.ExtraPromptLineCount);
while (promptChar >= 0)
{
if (char.IsSymbol((char)_consoleBuffer[promptChar].UnicodeChar))
{
ConsoleColor prevColor = _consoleBuffer[promptChar].ForegroundColor;
_consoleBuffer[promptChar].ForegroundColor = ConsoleColor.Red;
WriteBufferLines(_consoleBuffer, ref _initialY);
rendered = true;
_consoleBuffer[promptChar].ForegroundColor = prevColor;
break;
}
promptChar -= 1;
}
}
if (!rendered)
{
WriteBufferLines(_consoleBuffer, ref _initialY);
}
PlaceCursor();
if ((_initialY + bufferLineCount + (_demoMode ? 1 : 0)) > (Console.WindowTop + Console.WindowHeight))
{
Console.WindowTop = _initialY + bufferLineCount + (_demoMode ? 1 : 0) - Console.WindowHeight;
}
_lastRenderTime.Restart();
}
private static void WriteBlankLines(int count, int top)
{
var blanks = new CHAR_INFO[count * Console.BufferWidth];
for (int i = 0; i < blanks.Length; i++)
{
blanks[i].BackgroundColor = Console.BackgroundColor;
blanks[i].ForegroundColor = Console.ForegroundColor;
blanks[i].UnicodeChar = ' ';
}
WriteBufferLines(blanks, ref top);
}
private void Initialize(Runspace remoteRunspace)
{
_buffer.Clear();
_edits = new List<EditItem>();
_undoEditIndex = 0;
_editGroupCount = 0;
_pushedEditGroupCount.Clear();
_current = 0;
_mark = 0;
_emphasisStart = -1;
_emphasisLength = 0;
_tokens = null;
_parseErrors = null;
_inputAccepted = false;
_initialX = Console.CursorLeft;
_initialY = Console.CursorTop - Options.ExtraPromptLineCount;
_initialBackgroundColor = Console.BackgroundColor;
_initialForegroundColor = Console.ForegroundColor;
_space = new CHAR_INFO(' ', _initialForegroundColor, _initialBackgroundColor);
_bufferWidth = Console.BufferWidth;
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_visualSelectionCommandCount = 0;
_remoteRunspace = remoteRunspace;
_consoleBuffer = ReadBufferLines(_initialY, 1 + Options.ExtraPromptLineCount);
_lastRenderTime = Stopwatch.StartNew();
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_searchHistoryCommandCount = 0;
_recallHistoryCommandCount = 0;
_visualSelectionCommandCount = 0;
_hashedHistory = null;
if (_getNextHistoryIndex > 0)
{
_currentHistoryIndex = _getNextHistoryIndex;
UpdateFromHistory(moveCursor: true);
_getNextHistoryIndex = 0;
}
}
private void MaybeEmphasize(ref CHAR_INFO charInfo, int i, ConsoleColor foregroundColor, ConsoleColor backgroundColor)
{
if (i >= _emphasisStart && i < (_emphasisStart + _emphasisLength))
{
backgroundColor = _options.EmphasisBackgroundColor;
foregroundColor = _options.EmphasisForegroundColor;
}
else if (_visualSelectionCommandCount > 0 && InRegion(i))
{
// We can't quite emulate real console selection because it inverts
// based on actual screen colors, our pallete is limited. The choice
// to invert only the lower 3 bits to change the color is somewhat
// but looks best with the 2 default color schemes - starting PowerShell
// from it's shortcut or from a cmd shortcut.
foregroundColor = (ConsoleColor)((int)foregroundColor ^ 7);
backgroundColor = (ConsoleColor)((int)backgroundColor ^ 7);
}
charInfo.ForegroundColor = foregroundColor;
charInfo.BackgroundColor = backgroundColor;
}
private void ReallyRender()
{
_renderForDemoNeeded = false;
var text = ParseInput();
int statusLineCount = GetStatusLineCount();
int bufferLineCount = ConvertOffsetToCoordinates(text.Length).Y - _initialY + 1 + _demoWindowLineCount + statusLineCount;
int bufferWidth = Console.BufferWidth;
if (_consoleBuffer.Length != bufferLineCount * bufferWidth)
{
var newBuffer = new CHAR_INFO[bufferLineCount * bufferWidth];
Array.Copy(_consoleBuffer, newBuffer, _initialX + (Options.ExtraPromptLineCount * _bufferWidth));
if (_consoleBuffer.Length > bufferLineCount * bufferWidth)
{
// Need to erase the extra lines that we won't draw again
for (int i = bufferLineCount * bufferWidth; i < _consoleBuffer.Length; i++)
{
_consoleBuffer[i] = _space;
}
WriteBufferLines(_consoleBuffer, ref _initialY);
}
_consoleBuffer = newBuffer;
}
var tokenStack = new Stack<SavedTokenState>();
tokenStack.Push(new SavedTokenState
{
Tokens = _tokens,
Index = 0,
BackgroundColor = _initialBackgroundColor,
ForegroundColor = _initialForegroundColor
});
int j = _initialX + (_bufferWidth * Options.ExtraPromptLineCount);
var backgroundColor = _initialBackgroundColor;
var foregroundColor = _initialForegroundColor;
for (int i = 0; i < text.Length; i++)
{
// Figure out the color of the character - if it's in a token,
// use the tokens color otherwise use the initial color.
var state = tokenStack.Peek();
var token = state.Tokens[state.Index];
if (i == token.Extent.EndOffset)
{
if (token == state.Tokens[state.Tokens.Length - 1])
{
tokenStack.Pop();
state = tokenStack.Peek();
}
foregroundColor = state.ForegroundColor;
backgroundColor = state.BackgroundColor;
token = state.Tokens[++state.Index];
}
if (i == token.Extent.StartOffset)
{
GetTokenColors(token, out foregroundColor, out backgroundColor);
var stringToken = token as StringExpandableToken;
if (stringToken != null)
{
// We might have nested tokens.
if (stringToken.NestedTokens != null && stringToken.NestedTokens.Any())
{
var tokens = new Token[stringToken.NestedTokens.Count + 1];
stringToken.NestedTokens.CopyTo(tokens, 0);
// NestedTokens doesn't have an "EOS" token, so we use
// the string literal token for that purpose.
tokens[tokens.Length - 1] = stringToken;
tokenStack.Push(new SavedTokenState
{
Tokens = tokens,
Index = 0,
BackgroundColor = backgroundColor,
ForegroundColor = foregroundColor
});
}
}
}
if (text[i] == '\n')
{
while ((j % bufferWidth) != 0)
{
_consoleBuffer[j++] = _space;
}
for (int k = 0; k < Options.ContinuationPrompt.Length; k++, j++)
{
_consoleBuffer[j].UnicodeChar = Options.ContinuationPrompt[k];
_consoleBuffer[j].ForegroundColor = Options.ContinuationPromptForegroundColor;
_consoleBuffer[j].BackgroundColor = Options.ContinuationPromptBackgroundColor;
}
}
else if (char.IsControl(text[i]))
{
_consoleBuffer[j].UnicodeChar = '^';
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
_consoleBuffer[j].UnicodeChar = (char)('@' + text[i]);
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
else
{
_consoleBuffer[j].UnicodeChar = text[i];
MaybeEmphasize(ref _consoleBuffer[j++], i, foregroundColor, backgroundColor);
}
}
for (; j < (_consoleBuffer.Length - ((statusLineCount + _demoWindowLineCount) * _bufferWidth)); j++)
{
_consoleBuffer[j] = _space;
}
if (_statusLinePrompt != null)
{
for (int i = 0; i < _statusLinePrompt.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusLinePrompt[i];
_consoleBuffer[j].ForegroundColor = Console.ForegroundColor;
_consoleBuffer[j].BackgroundColor = Console.BackgroundColor;
}
for (int i = 0; i < _statusBuffer.Length; i++, j++)
{
_consoleBuffer[j].UnicodeChar = _statusBuffer[i];
_consoleBuffer[j].ForegroundColor = Console.ForegroundColor;
_consoleBuffer[j].BackgroundColor = Console.BackgroundColor;
}
for (; j < (_consoleBuffer.Length - (_demoWindowLineCount * _bufferWidth)); j++)
{
_consoleBuffer[j] = _space;
}
}
if (_demoMode)
{
RenderDemoWindow(j);
}
bool rendered = false;
if (_parseErrors.Length > 0)
{
int promptChar = _initialX - 1 + (_bufferWidth * Options.ExtraPromptLineCount);
while (promptChar >= 0)
{
if (char.IsSymbol((char)_consoleBuffer[promptChar].UnicodeChar))
{
ConsoleColor prevColor = _consoleBuffer[promptChar].ForegroundColor;
_consoleBuffer[promptChar].ForegroundColor = ConsoleColor.Red;
WriteBufferLines(_consoleBuffer, ref _initialY);
rendered = true;
_consoleBuffer[promptChar].ForegroundColor = prevColor;
break;
}
promptChar -= 1;
}
}
if (!rendered)
{
WriteBufferLines(_consoleBuffer, ref _initialY);
}
PlaceCursor();
if ((_initialY + bufferLineCount + (_demoMode ? 1 : 0)) > (Console.WindowTop + Console.WindowHeight))
{
Console.WindowTop = _initialY + bufferLineCount + (_demoMode ? 1 : 0) - Console.WindowHeight;
}
_lastRenderTime.Restart();
}
private static void WriteBufferLines(CHAR_INFO[] buffer, ref int top)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
int bufferWidth = Console.BufferWidth;
int bufferLineCount = buffer.Length / bufferWidth;
if ((top + bufferLineCount) > Console.BufferHeight)
{
var scrollCount = (top + bufferLineCount) - Console.BufferHeight;
ScrollBuffer(scrollCount);
top -= scrollCount;
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) bufferLineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var writeRegion = new SMALL_RECT
{
Top = (short) top,
Left = 0,
Bottom = (short) (top + bufferLineCount - 1),
Right = (short) bufferWidth
};
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
}
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
IntPtr lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
private static void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short) lines,
Left = 0,
Bottom = (short) (lines + Console.BufferHeight - 1),
Right = (short)Console.BufferWidth
};
var destinationOrigin = new COORD {X = 0, Y = 0};
var fillChar = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
NativeMethods.ScrollConsoleScreenBuffer(handle, ref scrollRectangle, IntPtr.Zero, destinationOrigin, ref fillChar);
}
private void Initialize(Runspace remoteRunspace, EngineIntrinsics engineIntrinsics)
{
if (!_delayedOneTimeInitCompleted)
{
DelayedOneTimeInitialize();
_delayedOneTimeInitCompleted = true;
}
_engineIntrinsics = engineIntrinsics;
_buffer.Clear();
_edits = new List <EditItem>();
_undoEditIndex = 0;
_editGroupStart = -1;
_current = 0;
_mark = 0;
_emphasisStart = -1;
_emphasisLength = 0;
_tokens = null;
_parseErrors = null;
_inputAccepted = false;
_initialX = Console.CursorLeft;
_initialY = Console.CursorTop - Options.ExtraPromptLineCount;
_initialBackgroundColor = Console.BackgroundColor;
_initialForegroundColor = Console.ForegroundColor;
_space = new CHAR_INFO(' ', _initialForegroundColor, _initialBackgroundColor);
_bufferWidth = Console.BufferWidth;
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_visualSelectionCommandCount = 0;
_remoteRunspace = remoteRunspace;
_statusIsErrorMessage = false;
_consoleBuffer = ReadBufferLines(_initialY, 1 + Options.ExtraPromptLineCount);
_lastRenderTime = Stopwatch.StartNew();
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_recallHistoryCommandCount = 0;
_visualSelectionCommandCount = 0;
_hashedHistory = null;
if (_getNextHistoryIndex > 0)
{
_currentHistoryIndex = _getNextHistoryIndex;
UpdateFromHistory(moveCursor: true);
_getNextHistoryIndex = 0;
if (_searchHistoryCommandCount > 0)
{
_searchHistoryPrefix = "";
if (Options.HistoryNoDuplicates)
{
_hashedHistory = new Dictionary <string, int>();
}
}
}
else
{
_searchHistoryCommandCount = 0;
}
}
private static void WriteBufferLines(CHAR_INFO[] buffer, ref int top)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
int bufferWidth = Console.BufferWidth;
int bufferLineCount = buffer.Length / bufferWidth;
if ((top + bufferLineCount) > Console.BufferHeight)
{
var scrollCount = (top + bufferLineCount) - Console.BufferHeight;
ScrollBuffer(scrollCount);
top -= scrollCount;
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) bufferLineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var bottom = top + bufferLineCount - 1;
var writeRegion = new SMALL_RECT
{
Top = (short) top,
Left = 0,
Bottom = (short) bottom,
Right = (short) (bufferWidth - 1)
};
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
// Now make sure the bottom line is visible
if (bottom >= (Console.WindowTop + Console.WindowHeight))
{
Console.CursorTop = bottom;
}
}
static void Box(List<string> list)
{
int internalBoxWidth = Math.Min(Console.BufferWidth - 2, list.Max(e => e.Length));
int boxWidth = internalBoxWidth + 2;
int internalBoxHeight = list.Count;
int boxHeight = internalBoxHeight + 2;
var buffer = new CHAR_INFO[boxWidth * boxHeight];
buffer[0].UnicodeChar = '+';
buffer[boxWidth - 1].UnicodeChar = '+';
for (int i = 1; i < boxWidth - 1; i++)
{
buffer[i].UnicodeChar = '-';
}
for (int i = 0; i < list.Count; i++)
{
int rowStart = (i + 1) * boxWidth;
buffer[rowStart++].UnicodeChar = '|';
buffer[rowStart + internalBoxWidth].UnicodeChar = '|';
string s = list[i];
int j;
for (j = 0; j < s.Length; j++)
{
buffer[rowStart + j].UnicodeChar = s[j];
}
for (; j < internalBoxWidth; j++)
{
buffer[rowStart + j].UnicodeChar = ' ';
}
}
int lastRowStart = (boxHeight - 1) * boxWidth;
buffer[lastRowStart].UnicodeChar = '+';
for (int i = 1; i < boxWidth - 1; i++)
{
buffer[i + lastRowStart].UnicodeChar = '-';
}
buffer[lastRowStart + boxWidth - 1].UnicodeChar = '+';
for (int i = 0; i < buffer.Length; i++)
{
buffer[i].Attributes = (ushort)ConsoleColor.Blue |
((ushort)(ConsoleColor.DarkGreen) << 4);
if (i % 2 != 0)
{
buffer[i].Attributes |= 0xfff0;
}
}
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var bufferSize = new COORD {X = (short)boxWidth, Y = (short)boxHeight};
var bufferCoord = new COORD {X = 0, Y = 0};
var writeRegion = new SMALL_RECT {
Top = 1,
Left = 1,
Bottom = (short)(1 + boxHeight),
Right = (short)(1 + boxWidth)};
Console.WriteLine("some random stuff");
Console.WriteLine("and more some random stuff");
Console.WriteLine("lorem ipsum blah blah");
Console.ReadKey();
var saveBuffer = new CHAR_INFO[buffer.Length];
NativeMethods.ReadConsoleOutput(handle, saveBuffer,
bufferSize, bufferCoord, ref writeRegion);
unsafe
{
fixed (CHAR_INFO* p = &buffer[0])
fixed (CHAR_INFO* sp = &saveBuffer[0])
{
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
Console.ReadKey();
NativeMethods.WriteConsoleOutput(handle, saveBuffer,
bufferSize, bufferCoord, ref writeRegion);
}
}
Console.ReadKey();
}
private void InteractiveHistorySearch(int direction)
{
SaveCurrentLine();
// Add a status line that will contain the search prompt and string
_statusLinePrompt = direction > 0 ? _forwardISearchPrompt : _backwardISearchPrompt;
_statusBuffer.Append("_");
Render(); // Render prompt
InteractiveHistorySearchLoop(direction);
_hashedHistory = null;
// Remove our status line
_statusBuffer.Clear();
_statusLinePrompt = null;
_emphasisStart = -1;
_emphasisLength = 0;
#if FALSE
int promptStart = _bufferWidth * Options.ExtraPromptLineCount;
int promptWidth = _initialX;
// Copy the prompt (ignoring the possible extra lines which we'll leave alone)
var savedPrompt = new CHAR_INFO[promptWidth];
Array.Copy(_consoleBuffer, promptStart, savedPrompt, 0, promptWidth);
string newPrompt = "(reverse-i-search)`': ";
_initialX = newPrompt.Length;
int i, j;
for (i = promptStart, j = 0; j < newPrompt.Length; i++, j++)
{
_consoleBuffer[i].UnicodeChar = newPrompt[j];
_consoleBuffer[i].BackgroundColor = Console.BackgroundColor;
_consoleBuffer[i].ForegroundColor = Console.ForegroundColor;
}
InteractiveHistorySearchLoop(direction);
// Restore the original prompt
_initialX = promptWidth;
Array.Copy(savedPrompt, 0, _consoleBuffer, promptStart, savedPrompt.Length);
#endif
Render();
}
private static CHAR_INFO[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[Console.BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)Console.BufferWidth,
Y = (short)count};
var readBufferCoord = new COORD {X = 0, Y = 0};
var readRegion = new SMALL_RECT
{
Top = (short)top,
Left = 0,
Bottom = (short)(top + count),
Right = (short)(Console.BufferWidth - 1)
};
NativeMethods.ReadConsoleOutput(handle, result,
readBufferSize, readBufferCoord, ref readRegion);
return result;
}
static void ClearScreen()
{
int bufferWidth = Console.BufferWidth;
const int bufferLineCount = 10;
var consoleBuffer = new CHAR_INFO[bufferWidth * bufferLineCount];
for (int i = 0; i < consoleBuffer.Length; i++)
{
consoleBuffer[i] = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
}
int top = 0;
WriteBufferLines(consoleBuffer, ref top);
}
private static void SetPrompt(string prompt)
{
if (string.IsNullOrEmpty(prompt))
return;
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var lineCount = 1 + prompt.Count(c => c == '\n');
if (lineCount > 1)
{
var options = new SetPSReadlineOption {ExtraPromptLineCount = lineCount - 1};
PSConsoleReadLine.SetOptions(options);
}
int bufferWidth = Console.BufferWidth;
var consoleBuffer = new CHAR_INFO[lineCount * bufferWidth];
int j = 0;
for (int i = 0; i < prompt.Length; i++, j++)
{
if (prompt[i] == '\n')
{
for (; j % Console.BufferWidth != 0; j++)
{
consoleBuffer[j] = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
}
Console.CursorTop += 1;
Console.CursorLeft = 0;
j -= 1; // We don't actually write the newline
}
else
{
consoleBuffer[j] = new CHAR_INFO(prompt[i], Console.ForegroundColor, Console.BackgroundColor);
Console.CursorLeft += 1;
}
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) lineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var writeRegion = new SMALL_RECT
{
Top = 0,
Left = 0,
Bottom = (short) (lineCount - 1),
Right = (short) bufferWidth
};
NativeMethods.WriteConsoleOutput(handle, consoleBuffer, bufferSize, bufferCoord, ref writeRegion);
}
private void ClearDemoWindow()
{
int bufferWidth = Console.BufferWidth;
var charInfoBuffer = new CHAR_INFO[bufferWidth * 3];
for (int i = 0; i < charInfoBuffer.Length; i++)
{
charInfoBuffer[i].UnicodeChar = ' ';
charInfoBuffer[i].ForegroundColor = _initialForegroundColor;
charInfoBuffer[i].BackgroundColor= _initialBackgroundColor;
}
int bufferLineCount = ConvertOffsetToCoordinates(_buffer.Length).Y - _initialY + 1;
int y = _initialY + bufferLineCount + 1;
WriteBufferLines(charInfoBuffer, ref y);
}
private CHAR_INFO[] CreateCharInfoBuffer(int lines, params object[] items)
{
var result = new List<CHAR_INFO>();
var fg = Console.ForegroundColor;
var bg = Console.BackgroundColor;
foreach (var i in items)
{
var item = i;
if (item is char)
{
result.Add(new CHAR_INFO((char)item, fg, bg));
continue;
}
if (item is InvertedToken)
{
fg = (ConsoleColor)((int)fg ^ 7);
bg = (ConsoleColor)((int)bg ^ 7);
continue;
}
if (item is NextLineToken)
{
item = new string(' ', Console.BufferWidth - (result.Count % Console.BufferWidth));
fg = Console.ForegroundColor;
bg = Console.BackgroundColor;
// Fallthrough to string case.
}
var str = item as string;
if (str != null)
{
result.AddRange(str.Select(c => new CHAR_INFO(c, fg, bg)));
continue;
}
if (item is TokenClassification)
{
fg = ForegroundColors[(int)(TokenClassification)item];
bg = BackgroundColors[(int)(TokenClassification)item];
continue;
}
var tuple = item as Tuple<ConsoleColor, ConsoleColor>;
if (tuple != null)
{
fg = tuple.Item1;
bg = tuple.Item2;
continue;
}
throw new ArgumentException("Unexpected type");
}
var extraSpacesNeeded = (lines * Console.BufferWidth) - result.Count;
if (extraSpacesNeeded > 0)
{
var space = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
result.AddRange(Enumerable.Repeat(space, extraSpacesNeeded));
}
return result.ToArray();
}
private void PossibleCompletionsImpl(ConsoleKeyInfo? key, object arg, bool menuSelect)
{
var completions = GetCompletions();
if (completions == null || completions.CompletionMatches.Count == 0)
{
Ding();
return;
}
if (completions.CompletionMatches.Count >= _options.CompletionQueryItems)
{
if (!PromptYesOrNo(string.Format(PSReadLineResources.DisplayAllPossibilities, completions.CompletionMatches.Count)))
{
return;
}
}
// Don't overwrite any of the line - so move to first line after the end of our buffer.
var coords = ConvertOffsetToCoordinates(_buffer.Length);
PlaceCursor(0, coords.Y + 1);
var matches = completions.CompletionMatches;
var minColWidth = matches.Max(c => c.ListItemText.Length);
minColWidth += 2;
var menuColumnWidth = minColWidth;
CompletionResult[,] matchesMatrix;
int displayColumns;
int displayRows;
var bufferWidth = Console.BufferWidth;
var sb = new StringBuilder(bufferWidth);
if (Options.ShowToolTips)
{
const string seperator = "- ";
var maxTooltipWidth = bufferWidth - minColWidth - seperator.Length;
matchesMatrix = new CompletionResult[1, matches.Count];
displayRows = matches.Count;
displayColumns = 1;
for (int index = 0; index < matches.Count; index++)
{
var match = matches[index];
matchesMatrix[0, index] = match;
var listItemText = HandleNewlinesForPossibleCompletions(match.ListItemText);
sb.Append(listItemText);
var spacesNeeded = minColWidth - listItemText.Length;
if (spacesNeeded > 0)
sb.Append(' ', spacesNeeded);
sb.Append(seperator);
var toolTip = HandleNewlinesForPossibleCompletions(match.ToolTip);
toolTip = toolTip.Length <= maxTooltipWidth
? toolTip
: toolTip.Substring(0, maxTooltipWidth);
sb.Append(toolTip);
// Make sure we always write out exactly 1 buffer width
spacesNeeded = bufferWidth - sb.Length;
if (spacesNeeded > 0)
{
sb.Append(' ', spacesNeeded);
}
Console.Write(sb.ToString());
sb.Clear();
}
menuColumnWidth = bufferWidth;
}
else
{
var screenColumns = bufferWidth;
displayColumns = Math.Max(1, screenColumns / minColWidth);
displayRows = (completions.CompletionMatches.Count + displayColumns - 1) / displayColumns;
matchesMatrix = new CompletionResult[displayColumns, displayRows];
for (var row = 0; row < displayRows; row++)
{
for (var col = 0; col < displayColumns; col++)
{
var index = row + (displayRows * col);
if (index >= matches.Count)
break;
var match = matches[index];
matchesMatrix[col, row] = match;
var item = HandleNewlinesForPossibleCompletions(match.ListItemText);
sb.Append(item);
sb.Append(' ', minColWidth - item.Length);
}
// Make sure we always write out exactly 1 buffer width
var spacesNeeded = bufferWidth - sb.Length;
if (spacesNeeded > 0)
{
sb.Append(' ', spacesNeeded);
}
Console.Write(sb.ToString());
sb.Clear();
}
}
if (menuSelect)
{
// Move cursor back to the line.
PlaceCursor();
StartEditGroup();
int top = coords.Y + 1;
int selectedItem = 0;
bool undo = false;
InvertSelectedCompletion(top, 0, menuColumnWidth);
DoReplacementForCompletion(matchesMatrix[0, 0], completions);
int previousItem = selectedItem;
bool processingKeys = true;
while (processingKeys)
{
var nextKey = ReadKey();
if (nextKey == Keys.RightArrow)
{
selectedItem = Math.Min(selectedItem + displayRows, matches.Count - 1);
}
else if (nextKey == Keys.LeftArrow)
{
selectedItem = Math.Max(selectedItem - displayRows, 0);
}
else if (nextKey == Keys.DownArrow)
{
selectedItem = Math.Min(selectedItem + 1, matches.Count - 1);
}
else if (nextKey == Keys.UpArrow)
{
selectedItem = Math.Max(selectedItem - 1, 0);
}
else if (nextKey == Keys.Tab)
{
selectedItem = (selectedItem + 1) % matches.Count;
}
else if (nextKey == Keys.ShiftTab)
{
selectedItem = (selectedItem - 1) % matches.Count;
if (selectedItem < 0)
{
selectedItem += matches.Count;
}
}
else if (nextKey == Keys.CtrlG || nextKey == Keys.Escape)
{
undo = true;
processingKeys = false;
}
else
{
PrependQueuedKeys(nextKey);
processingKeys = false;
}
if (selectedItem != previousItem)
{
var selectedX = selectedItem / displayRows;
var selectedY = selectedItem - (selectedX * displayRows);
var completionResult = matchesMatrix[selectedX, selectedY];
if (completionResult != null)
{
var previousX = previousItem / displayRows;
var previousY = previousItem - (previousX * displayRows);
InvertSelectedCompletion(previousY + top, previousX, menuColumnWidth);
InvertSelectedCompletion(selectedY + top, selectedX, menuColumnWidth);
DoReplacementForCompletion(completionResult, completions);
previousItem = selectedItem;
}
else
{
selectedItem = previousItem;
}
}
}
var blanks = new CHAR_INFO[displayRows * bufferWidth];
for (int i = 0; i < displayRows; i++)
{
blanks[i].BackgroundColor = Console.BackgroundColor;
blanks[i].ForegroundColor = Console.ForegroundColor;
blanks[i].UnicodeChar = ' ';
}
WriteBufferLines(blanks, ref top);
EndEditGroup();
if (undo)
{
// Pretend it never happened.
Undo();
}
}
else
{
_initialY = Console.CursorTop;
Render();
}
}