/// <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
{
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();
}
}
}
}
/// <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;
_singleton._requestKeyWaitHandles[2] = _singleton._cancelReadCancellationToken.WaitHandle;
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 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)
{
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);
}
_singleton._cancelReadCancellationToken = cancellationToken;
_singleton._requestKeyWaitHandles[2] = _singleton._cancelReadCancellationToken.WaitHandle;
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].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();
}
}
}
}