internal ConsoleThread(Interp i)
{
Name = "ConsoleThread";
interp = i;
sbuf = new System.Text.StringBuilder(100);
out_Renamed = TclIO.GetStdChannel(StdChannel.STDOUT);
err = TclIO.GetStdChannel(StdChannel.STDERR);
}
public override void ProcessIdleEvent()
{
// During the execution of this method, elements may be removed from the errors list (because a TCL.CompletionCode.BREAK was returned by the bgerror
// command, or because the interp was deleted). We remove this BgError instance from the list first so that this instance won't
// be deleted twice.
SupportClass.VectorRemoveElement(EnclosingInstance.Errors, this);
// Restore important state variables to what they were at the time the error occurred.
try { EnclosingInstance.Interp.SetVar("errorInfo", null, ErrorInfo, TCL.VarFlag.GLOBAL_ONLY); }
// Ignore any TclException's, possibly caused by variable traces on the errorInfo variable. This is compatible with the behavior of the Tcl C API.
catch (TclException) { }
try { EnclosingInstance.Interp.SetVar("errorCode", null, ErrorCode, TCL.VarFlag.GLOBAL_ONLY); }
// Ignore any TclException's, possibly caused by variable traces on the errorCode variable. This is compatible with the behavior of the Tcl C API.
catch (TclException) { }
// Make sure, that the interpreter will surive the invocation of the bgerror command.
EnclosingInstance.Interp.preserve();
try
{
// Invoke the bgerror command.
TclObject[] argv = new TclObject[2];
argv[0] = EnclosingInstance.BgerrorCmdObj;
argv[1] = ErrorMsg;
Parser.EvalObjv(EnclosingInstance.Interp, argv, 0, TCL.EVAL_GLOBAL);
}
catch (TclException e)
{
switch (e.GetCompletionCode())
{
case TCL.CompletionCode.ERROR:
try
{
Channel chan = TclIO.GetStdChannel(StdChannel.STDERR);
var interp = EnclosingInstance.Interp;
if (EnclosingInstance.Interp.GetResult().ToString().Equals("\"bgerror\" is an invalid command name or ambiguous abbreviation"))
{
chan.Write(interp, ErrorInfo);
chan.Write(interp, "\n");
}
else
{
chan.Write(interp, "bgerror failed to handle background error.\n");
chan.Write(interp, " Original error: ");
chan.Write(interp, ErrorMsg);
chan.Write(interp, "\n");
chan.Write(interp, " Error in bgerror: ");
chan.Write(interp, EnclosingInstance.Interp.GetResult());
chan.Write(interp, "\n");
}
chan.Flush(EnclosingInstance.Interp);
}
catch (TclException) { } // Ignore.
catch (IOException) { } // Ignore, too.
break;
case TCL.CompletionCode.BREAK:
for (int i = EnclosingInstance.Errors.Count - 1; i >= 0; i--)
{
BgError bgError = (BgError)EnclosingInstance.Errors[i];
EnclosingInstance.Errors.RemoveAt(i);
bgError.Cancel();
bgError.ErrorMsg.Release(); bgError.ErrorMsg = null;
bgError.ErrorInfo.Release(); bgError.ErrorInfo = null;
bgError.ErrorCode.Release(); bgError.ErrorCode = null;
}
break;
}
}
EnclosingInstance.Interp.release();
ErrorMsg.Release(); ErrorMsg = null;
ErrorInfo.Release(); ErrorInfo = null;
ErrorCode.Release(); ErrorCode = null;
}
private static void makeSafe(Interp interp)
{
Channel chan; // Channel to remove from safe interpreter.
interp.hideUnsafeCommands();
interp._isSafe = true;
// Unsetting variables : (which should not have been set
// in the first place, but...)
// No env array in a safe slave.
try
{
interp.UnsetVar("env", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
// Remove unsafe parts of tcl_platform
try
{
interp.UnsetVar("tcl_platform", "os", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
try
{
interp.UnsetVar("tcl_platform", "osVersion", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
try
{
interp.UnsetVar("tcl_platform", "machine", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
try
{
interp.UnsetVar("tcl_platform", "user", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
// Unset path informations variables
// (the only one remaining is [info nameofexecutable])
try
{
interp.UnsetVar("tclDefaultLibrary", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
try
{
interp.UnsetVar("tcl_library", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
try
{
interp.UnsetVar("tcl_pkgPath", TCL.VarFlag.GLOBAL_ONLY);
}
catch (TclException e)
{
}
// Remove the standard channels from the interpreter; safe interpreters
// do not ordinarily have access to stdin, stdout and stderr.
//
// NOTE: These channels are not added to the interpreter by the
// Tcl_CreateInterp call, but may be added later, by another I/O
// operation. We want to ensure that the interpreter does not have
// these channels even if it is being made safe after being used for
// some time..
chan = TclIO.GetStdChannel(StdChannel.STDIN);
if (chan != null)
{
TclIO.unregisterChannel(interp, chan);
}
chan = TclIO.GetStdChannel(StdChannel.STDOUT);
if (chan != null)
{
TclIO.unregisterChannel(interp, chan);
}
chan = TclIO.GetStdChannel(StdChannel.STDERR);
if (chan != null)
{
TclIO.unregisterChannel(interp, chan);
}
}
