Beispiel #1
0
        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);
        }
Beispiel #2
0
            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;
            }
Beispiel #3
0
        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);
            }
        }