/// <summary>
/// Loads letter iamge from win32 font.
/// </summary>
/// <param name="cache">should the iamge be cached in tga, xml files.</param>
/// <returns>loader letter information.</returns>
protected internal override LetterInfo Load(bool cache)
{
LetterInfo result = null;
#if WINDOWS
IntPtr bitmapHandle = IntPtr.Zero;
byte[] textureData = null;
try
{
if (null == PlatformWindows.SelectFont(this.font.fontRenderingDisplayContext, this.font.fontHandle))
{
throw new Exception();
}
TextMetric tm = new TextMetric();
if (false == PlatformWindows.GetTextMetrics(this.font.fontRenderingDisplayContext, out tm))
{
throw new Exception();
}
if (PlatformWindows.GDI_ERROR == PlatformWindows.SetTextAlign(this.font.fontRenderingDisplayContext, PlatformWindows.TA_LEFT | PlatformWindows.TA_TOP | PlatformWindows.TA_UPDATECP))
{
throw new Exception();
}
ABC[] abc = new ABC[1];
if (false == PlatformWindows.GetCharABCWidths(this.font.fontRenderingDisplayContext, (uint)this.character, (uint)this.character, abc))
{
throw new Exception();
}
this.offsetX = abc[0].abcA;
this.width = (int)(abc[0].abcB + abc[0].abcC);
BitmapInfo header = new BitmapInfo();
header.bmiHeader.biSize = Marshal.SizeOf(header);
GlyphMetrics metrics = new GlyphMetrics();
MAT2 identity = new MAT2();
identity.eM12.value = 0;
identity.eM21.value = 0;
identity.eM11.value = 1;
identity.eM22.value = 1;
if (PlatformWindows.GDI_ERROR == PlatformWindows.GetGlyphOutline(this.font.fontRenderingDisplayContext, this.character, PlatformWindows.GGO_METRICS, out metrics, 0, IntPtr.Zero, ref identity))
{
throw new Exception();
}
header.bmiHeader.biWidth = metrics.gmBlackBoxX;
header.bmiHeader.biHeight = -1 * metrics.gmBlackBoxY;
header.bmiHeader.biPlanes = 1;
header.bmiHeader.biBitCount = 32;
header.bmiHeader.biCompression = 0;// BI_RGB;
byte[] bitmapData = null;
IntPtr bitmapDataPointer = IntPtr.Zero;
bitmapHandle = PlatformWindows.CreateDIBSection(this.font.fontRenderingDisplayContext, ref header, /*DIB_RGB_COLORS*/ 0, out bitmapDataPointer, IntPtr.Zero, 0);
if (IntPtr.Zero == bitmapHandle)
{
int err = Marshal.GetLastWin32Error();
throw new Exception();
}
if (null == PlatformWindows.SelectObject(this.font.fontRenderingDisplayContext, bitmapHandle))
{
throw new Exception();
}
if (PlatformWindows.CLR_INVALID == PlatformWindows.SetBkColor(this.font.fontRenderingDisplayContext, new RGB(new byte[] { 0, 0, 0 }).ToInt32()))
{
throw new Exception();
}
if (PlatformWindows.CLR_INVALID == PlatformWindows.SetTextColor(this.font.fontRenderingDisplayContext, new RGB(new byte[] { 0xff, 0xff, 0xff }).ToInt32()))
{
throw new Exception();
}
if (0 == PlatformWindows.SetBkMode(this.font.fontRenderingDisplayContext, PlatformWindows.OPAQUE))
{
throw new Exception();
}
if (false == PlatformWindows.MoveToEx(this.font.fontRenderingDisplayContext, 0 - abc[0].abcA, -1 * (tm.tmAscent - metrics.gmptGlyphOrigin.y), IntPtr.Zero))
{
throw new Exception();
}
this.offsetY = tm.tmAscent - metrics.gmptGlyphOrigin.y - tm.tmDescent - 1;
String str = "" + this.character;
RECT rect = new RECT();
if (false == PlatformWindows.ExtTextOut(this.font.fontRenderingDisplayContext, 0, 0, (uint)0, ref rect, str, 1, null))
{
throw new Exception();
}
if (0 == PlatformWindows.SetBkMode(this.font.fontRenderingDisplayContext, PlatformWindows.TRANSPARENT))
{
throw new Exception();
}
int bitmapWidth = header.bmiHeader.biWidth;
int bitmapHeight = -header.bmiHeader.biHeight;
int textureWidth = RoundToPowerOf2(bitmapWidth);
int textureHeight = RoundToPowerOf2(bitmapHeight);
bitmapData = new byte[bitmapWidth * bitmapHeight * 4];
Marshal.Copy(bitmapDataPointer, bitmapData, 0, bitmapWidth * bitmapHeight * 4);
textureData = new byte[4 * textureWidth * textureHeight];
for (int j = 0; j < textureHeight; j++)
{
for (int i = 0; i < textureWidth; i++)
{
textureData[4 * (i + j * textureWidth) + 0] = 0xff;
textureData[4 * (i + j * textureWidth) + 1] = 0xff;
textureData[4 * (i + j * textureWidth) + 2] = 0xff;
textureData[4 * (i + j * textureWidth) + 3] = (byte)((i >= bitmapWidth || j >= bitmapHeight) ? 0 : bitmapData[(i + bitmapWidth * j) * 4 + 2]);
}
}
if (true == cache)
{
result = new LetterInfo();
result.width = bitmapWidth;
result.height = bitmapHeight;
result.bytes = textureData;
result.textureWidth = textureWidth;
result.textureHeight = textureHeight;
}
else
{
this.image = this.engine.CreateImage("Letter [" + this.character + "]", textureWidth, textureHeight, textureData);
// this.internalImage = true;
}
this.textureWidth = textureWidth;
this.textureHeight = textureHeight;
}
catch (Exception)
{
this.engine.DeleteImage(ref this.image);
}
if (null != bitmapHandle)
{
PlatformWindows.DeleteObject(bitmapHandle);
}
this.loaded = true;
#endif
return(result);
}
private void Initialize(Runspace runspace, EngineIntrinsics engineIntrinsics)
{
_engineIntrinsics = engineIntrinsics;
_runspace = runspace;
if (!_delayedOneTimeInitCompleted)
{
DelayedOneTimeInitialize();
_delayedOneTimeInitCompleted = true;
}
_buffer.Clear();
_edits = new List <EditItem>();
_undoEditIndex = 0;
_editGroupStart = -1;
_current = 0;
_mark = 0;
_emphasisStart = -1;
_emphasisLength = 0;
_ast = null;
_tokens = null;
_parseErrors = null;
_inputAccepted = false;
_initialX = _console.CursorLeft;
_initialY = _console.CursorTop;
_initialForeground = _console.ForegroundColor;
_initialBackground = _console.BackgroundColor;
_previousRender = _initialPrevRender;
_previousRender.UpdateConsoleInfo(_console);
_previousRender.initialY = _initialY;
_statusIsErrorMessage = false;
_initialOutputEncoding = _console.OutputEncoding;
_prediction.Reset();
// Don't change the OutputEncoding if already UTF8, no console, or using raster font on Windows
_skipOutputEncodingChange = _initialOutputEncoding == Encoding.UTF8 ||
(RuntimeInformation.IsOSPlatform(OSPlatform.Windows) &&
PlatformWindows.IsConsoleInput() &&
PlatformWindows.IsUsingRasterFont());
if (!_skipOutputEncodingChange)
{
_console.OutputEncoding = Encoding.UTF8;
}
_lastRenderTime = Stopwatch.StartNew();
_killCommandCount = 0;
_yankCommandCount = 0;
_yankLastArgCommandCount = 0;
_tabCommandCount = 0;
_recallHistoryCommandCount = 0;
_anyHistoryCommandCount = 0;
_visualSelectionCommandCount = 0;
_hashedHistory = null;
if (_getNextHistoryIndex > 0)
{
_currentHistoryIndex = _getNextHistoryIndex;
UpdateFromHistory(HistoryMoveCursor.ToEnd);
_getNextHistoryIndex = 0;
if (_searchHistoryCommandCount > 0)
{
_searchHistoryPrefix = "";
if (Options.HistoryNoDuplicates)
{
_hashedHistory = new Dictionary <string, int>();
}
}
}
else
{
_currentHistoryIndex = _history.Count;
_searchHistoryCommandCount = 0;
}
if (_previousHistoryItem != null)
{
_previousHistoryItem.ApproximateElapsedTime = DateTime.UtcNow - _previousHistoryItem.StartTime;
}
}
/// <summary>
/// Entry point - called by custom PSHost implementations that require the
/// ability to cancel ReadLine.
/// </summary>
/// <returns>The complete command line.</returns>
public static string ReadLine(
Runspace runspace,
EngineIntrinsics engineIntrinsics,
CancellationToken cancellationToken,
bool?lastRunStatus)
{
var console = _singleton._console;
if (Console.IsInputRedirected || Console.IsOutputRedirected)
{
// System.Console doesn't handle redirected input. It matches the behavior on Windows
// by throwing an "InvalidOperationException".
// Therefore, if either stdin or stdout is redirected, PSReadLine doesn't really work,
// so throw and let PowerShell call Console.ReadLine or do whatever else it decides to do.
//
// Some CI environments redirect stdin/stdout, but that doesn't affect our test runs
// because the console is mocked, so we can skip the exception.
if (!IsRunningCI(console))
{
throw new NotSupportedException();
}
}
var oldControlCAsInput = false;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Init(ref _singleton._charMap);
}
else
{
try
{
oldControlCAsInput = Console.TreatControlCAsInput;
Console.TreatControlCAsInput = true;
}
catch {}
}
if (lastRunStatus.HasValue)
{
_singleton.ReportExecutionStatus(lastRunStatus.Value);
}
bool firstTime = true;
while (true)
{
try
{
if (firstTime)
{
firstTime = false;
_singleton.Initialize(runspace, engineIntrinsics);
}
_singleton._cancelReadCancellationToken = cancellationToken;
return(_singleton.InputLoop());
}
catch (OperationCanceledException)
{
// Console is either exiting or the cancellation of ReadLine has been requested
// by a custom PSHost implementation.
return("");
}
catch (ExitException)
{
return("exit");
}
catch (CustomHandlerException e)
{
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(
string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsCustomHandlerException, e.InnerException.Message));
console.ForegroundColor = oldColor;
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
catch (Exception e)
{
// If we're running tests, just throw.
if (_singleton._mockableMethods != _singleton)
{
throw;
}
while (e.InnerException != null)
{
e = e.InnerException;
}
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(PSReadLineResources.OopsAnErrorMessage1);
console.ForegroundColor = oldColor;
var sb = new StringBuilder();
for (int i = 0; i < _lastNKeys.Count; i++)
{
sb.Append(' ');
sb.Append(_lastNKeys[i].KeyStr);
if (_singleton._dispatchTable.TryGetValue(_lastNKeys[i], out var handler) &&
"AcceptLine".Equals(handler.BriefDescription, StringComparison.OrdinalIgnoreCase))
{
// Make it a little easier to see the keys
sb.Append('\n');
}
}
var psVersion = PSObject.AsPSObject(engineIntrinsics.Host.Version).ToString();
var ourVersion = typeof(PSConsoleReadLine).Assembly.GetCustomAttributes <AssemblyInformationalVersionAttribute>().First().InformationalVersion;
var osInfo = RuntimeInformation.OSDescription;
var bufferWidth = console.BufferWidth;
var bufferHeight = console.BufferHeight;
console.WriteLine(string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsAnErrorMessage2,
ourVersion, psVersion, osInfo, bufferWidth, bufferHeight,
_lastNKeys.Count, sb, e));
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
finally
{
try
{
// If we are closing, restoring the old console settings isn't needed,
// and some operating systems, it can cause a hang.
if (!_singleton._closingWaitHandle.WaitOne(0))
{
console.OutputEncoding = _singleton._initialOutputEncoding;
bool IsValid(ConsoleColor color)
{
return(color >= ConsoleColor.Black && color <= ConsoleColor.White);
}
if (IsValid(_singleton._initialForeground))
{
console.ForegroundColor = _singleton._initialForeground;
}
if (IsValid(_singleton._initialBackground))
{
console.BackgroundColor = _singleton._initialBackground;
}
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Console.TreatControlCAsInput = oldControlCAsInput;
}
}
}
catch { }
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Complete();
}
}
}
}
/// <summary>
/// Entry point - called from the PowerShell function PSConsoleHostReadLine
/// after the prompt has been displayed.
/// </summary>
/// <returns>The complete command line.</returns>
public static string ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics)
{
var console = _singleton._console;
var oldControlCAsInput = false;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Init(ref _singleton._charMap);
}
else
{
if (Console.IsInputRedirected || Console.IsOutputRedirected)
{
// System.Console doesn't handle redirected input. It matches the behavior on Windows
// by throwing an "InvalidOperationException".
// Therefore, if either stdin or stdout is redirected, PSReadLine doesn't really work,
// so throw and let PowerShell call Console.ReadLine or do whatever else it decides to do.
throw new NotSupportedException();
}
try
{
oldControlCAsInput = Console.TreatControlCAsInput;
Console.TreatControlCAsInput = true;
}
catch {}
}
bool firstTime = true;
while (true)
{
try
{
if (firstTime)
{
firstTime = false;
_singleton.Initialize(runspace, engineIntrinsics);
}
return(_singleton.InputLoop());
}
catch (OperationCanceledException)
{
// Console is exiting - return value isn't too critical - null or 'exit' could work equally well.
return("");
}
catch (ExitException)
{
return("exit");
}
catch (CustomHandlerException e)
{
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(
string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsCustomHandlerException, e.InnerException.Message));
console.ForegroundColor = oldColor;
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
catch (Exception e)
{
// If we're running tests, just throw.
if (_singleton._mockableMethods != _singleton)
{
throw;
}
while (e.InnerException != null)
{
e = e.InnerException;
}
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(PSReadLineResources.OopsAnErrorMessage1);
console.ForegroundColor = oldColor;
var sb = new StringBuilder();
for (int i = 0; i < _lastNKeys.Count; i++)
{
sb.Append(' ');
sb.Append(_lastNKeys[i].ToGestureString());
if (_singleton._dispatchTable.TryGetValue(_lastNKeys[i], out var handler) &&
"AcceptLine".Equals(handler.BriefDescription, StringComparison.OrdinalIgnoreCase))
{
// Make it a little easier to see the keys
sb.Append('\n');
}
}
console.WriteLine(string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsAnErrorMessage2, _lastNKeys.Count, sb, e));
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
finally
{
try
{
// If we are closing, restoring the old console settings isn't needed,
// and some operating systems, it can cause a hang.
if (!_singleton._closingWaitHandle.WaitOne(0))
{
console.OutputEncoding = _singleton._initialOutputEncoding;
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Console.TreatControlCAsInput = oldControlCAsInput;
}
}
}
catch { }
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Complete();
}
}
}
}
private void DelayedOneTimeInitialize()
{
// Delayed initialization is needed so that options can be set
// after the constuctor but have an affect before the user starts
// editing their first command line. For example, if the user
// specifies a custom history save file, we don't want to try reading
// from the default one.
var historyCountVar = _engineIntrinsics?.SessionState.PSVariable.Get("MaximumHistoryCount");
if (historyCountVar?.Value is int historyCountValue)
{
_options.MaximumHistoryCount = historyCountValue;
}
if (_options.PromptText == null &&
_engineIntrinsics?.InvokeCommand.GetCommand("prompt", CommandTypes.Function) is FunctionInfo promptCommand)
{
var promptIsPure = null ==
promptCommand.ScriptBlock.Ast.Find(ast => ast is CommandAst ||
ast is InvokeMemberExpressionAst,
searchNestedScriptBlocks: true);
if (promptIsPure)
{
var res = promptCommand.ScriptBlock.InvokeReturnAsIs(Array.Empty <object>());
string evaluatedPrompt = res as string;
if (evaluatedPrompt == null && res is PSObject psobject)
{
evaluatedPrompt = psobject.BaseObject as string;
}
if (evaluatedPrompt != null)
{
int i;
for (i = evaluatedPrompt.Length - 1; i >= 0; i--)
{
if (!char.IsWhiteSpace(evaluatedPrompt[i]))
{
break;
}
}
if (i >= 0)
{
_options.PromptText = evaluatedPrompt.Substring(i);
}
}
}
}
_historyFileMutex = new Mutex(false, GetHistorySaveFileMutexName());
_history = new HistoryQueue <HistoryItem>(Options.MaximumHistoryCount);
_currentHistoryIndex = 0;
bool readHistoryFile = true;
try
{
if (_options.HistorySaveStyle == HistorySaveStyle.SaveNothing && Runspace.DefaultRunspace != null)
{
using (var ps = System.Management.Automation.PowerShell.Create(RunspaceMode.CurrentRunspace))
{
ps.AddCommand("Microsoft.PowerShell.Core\\Get-History");
foreach (var historyInfo in ps.Invoke <HistoryInfo>())
{
AddToHistory(historyInfo.CommandLine);
}
readHistoryFile = false;
}
}
}
catch
{
}
if (readHistoryFile)
{
ReadHistoryFile();
}
_killIndex = -1; // So first add indexes 0.
_killRing = new List <string>(Options.MaximumKillRingCount);
_singleton._readKeyWaitHandle = new AutoResetEvent(false);
_singleton._keyReadWaitHandle = new AutoResetEvent(false);
_singleton._closingWaitHandle = new ManualResetEvent(false);
_singleton._requestKeyWaitHandles = new WaitHandle[] { _singleton._keyReadWaitHandle, _singleton._closingWaitHandle };
_singleton._threadProcWaitHandles = new WaitHandle[] { _singleton._readKeyWaitHandle, _singleton._closingWaitHandle };
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.OneTimeInit(_singleton);
}
// This is for a "being hosted in an alternate appdomain scenario" (the
// DomainUnload event is not raised for the default appdomain). It allows us
// to exit cleanly when the appdomain is unloaded but the process is not going
// away.
if (!AppDomain.CurrentDomain.IsDefaultAppDomain())
{
AppDomain.CurrentDomain.DomainUnload += (x, y) =>
{
_singleton._closingWaitHandle.Set();
_singleton._readKeyThread.Join(); // may need to wait for history to be written
};
}
_singleton._readKeyThread = new Thread(_singleton.ReadKeyThreadProc)
{
IsBackground = true
};
_singleton._readKeyThread.Start();
}
/// <summary>
/// Entry point - called from the PowerShell function PSConsoleHostReadline
/// after the prompt has been displayed.
/// </summary>
/// <returns>The complete command line.</returns>
public static string ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics)
{
var console = _singleton._console;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Init(ref _singleton._charMap);
}
bool firstTime = true;
while (true)
{
try
{
if (firstTime)
{
firstTime = false;
_singleton.Initialize(runspace, engineIntrinsics);
}
return(_singleton.InputLoop());
}
catch (OperationCanceledException)
{
// Console is exiting - return value isn't too critical - null or 'exit' could work equally well.
return("");
}
catch (ExitException)
{
return("exit");
}
catch (CustomHandlerException e)
{
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(
string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsCustomHandlerException, e.InnerException.Message));
console.ForegroundColor = oldColor;
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
catch (Exception e)
{
// If we're running tests, just throw.
if (_singleton._mockableMethods != _singleton)
{
throw;
}
while (e.InnerException != null)
{
e = e.InnerException;
}
var oldColor = console.ForegroundColor;
console.ForegroundColor = ConsoleColor.Red;
console.WriteLine(PSReadLineResources.OopsAnErrorMessage1);
console.ForegroundColor = oldColor;
var sb = new StringBuilder();
for (int i = 0; i < _lastNKeys.Count; i++)
{
sb.Append(' ');
sb.Append(_lastNKeys[i].ToGestureString());
if (_singleton._dispatchTable.TryGetValue(_lastNKeys[i], out var handler) &&
"AcceptLine".Equals(handler.BriefDescription, StringComparison.OrdinalIgnoreCase))
{
// Make it a little easier to see the keys
sb.Append('\n');
}
}
console.WriteLine(string.Format(CultureInfo.CurrentUICulture, PSReadLineResources.OopsAnErrorMessage2, _lastNKeys.Count, sb, e));
var lineBeforeCrash = _singleton._buffer.ToString();
_singleton.Initialize(runspace, _singleton._engineIntrinsics);
InvokePrompt();
Insert(lineBeforeCrash);
}
finally
{
Console.OutputEncoding = _singleton._initialOutputEncoding;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
PlatformWindows.Complete();
}
}
}
}