Tcl Source Code

2011-04-02  Donal K. Fellows  <[email protected]>

	* generic/tclInterp.c, generic/tclListObj.c, generic/tclLoad.c:
	More generation of errorCodes ([interp], [lset], [load], [unload]).

	* generic/tclEvent.c, generic/tclFileName.c: More generation of
	errorCode information (default [bgerror] and [glob]).

2011-04-01  Reinhard Max  <[email protected]>

	* library/init.tcl: TIP#131 implementation.

int
Tcl_Init(
    Tcl_Interp *interp)		/* Interpreter to initialize. */
{
    if (tclPreInitScript != NULL) {
	if (Tcl_Eval(interp, tclPreInitScript) == TCL_ERROR) {
	    return TCL_ERROR;

	}
    }

    /*
     * In order to find init.tcl during initialization, the following script
     * is invoked by Tcl_Init(). It looks in several different directories:
     *
     *	$tcl_library		- can specify a primary location, if set, no

int
Tcl_InterpObjCmd(
    ClientData clientData,		/* Unused. */
    Tcl_Interp *interp,			/* Current interpreter. */
    int objc,				/* Number of arguments. */
    Tcl_Obj *const objv[])		/* Argument objects. */
{
    Tcl_Interp *slaveInterp;
    int index;
    static const char *const options[] = {
	"alias",	"aliases",	"bgerror",	"cancel",
	"create",	"debug",	"delete",
	"eval",		"exists",	"expose",
	"hide",		"hidden",	"issafe",
	"invokehidden",	"limit",	"marktrusted",	"recursionlimit",

    }
    if (Tcl_GetIndexFromObj(interp, objv[1], options, "option", 0,
	    &index) != TCL_OK) {
	return TCL_ERROR;
    }
    switch ((enum option) index) {
    case OPT_ALIAS: {
	Tcl_Interp *masterInterp;

	if (objc < 4) {
	aliasArgs:
	    Tcl_WrongNumArgs(interp, 2, objv,
		    "slavePath slaveCmd ?masterPath masterCmd? ?arg ...?");
	    return TCL_ERROR;
	}

	    } else {
		return AliasCreate(interp, slaveInterp, masterInterp, objv[3],
			objv[5], objc - 6, objv + 6);
	    }
	}
	goto aliasArgs;
    }
    case OPT_ALIASES:


	slaveInterp = GetInterp2(interp, objc, objv);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return AliasList(interp, slaveInterp);

    case OPT_BGERROR:


	if (objc != 3 && objc != 4) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path ?cmdPrefix?");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveBgerror(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_CANCEL: {
	int i, flags;

	Tcl_Obj *resultObjPtr;
	static const char *const cancelOptions[] = {
	    "-unwind",	"--",	NULL
	};
	enum option {
	    OPT_UNWIND,	OPT_LAST
	};

		break;
	    case OPT_LAST:
		i++;
		goto endOfForLoop;
	    }
	}

    endOfForLoop:

	if ((i + 2) < objc) {
	    Tcl_WrongNumArgs(interp, 2, objv,
		    "?-unwind? ?--? ?path? ?result?");
	    return TCL_ERROR;
	}

	/*
	 * Did they specify a slave interp to cancel the script in progress
	 * in?  If not, use the current interp.
	 */

	if (i < objc) {
	    slaveInterp = GetInterp(interp, objv[i]);
	    if (slaveInterp == NULL) {
		return TCL_ERROR;
	    }
	    i++;
	} else {
	    slaveInterp = interp;
	}


	if (i < objc) {
	    resultObjPtr = objv[i];

	    /*
	     * Tcl_CancelEval removes this reference.
	     */

	    Tcl_IncrRefCount(resultObjPtr);
	    i++;
	} else {
	    resultObjPtr = NULL;
	}

	return Tcl_CancelEval(slaveInterp, resultObjPtr, 0, flags);



    }
    case OPT_CREATE: {
	int i, last, safe;
	Tcl_Obj *slavePtr;
	char buf[16 + TCL_INTEGER_SPACE];
	static const char *const createOptions[] = {
	    "-safe",	"--", NULL

		Tcl_DecrRefCount(slavePtr);
	    }
	    return TCL_ERROR;
	}
	Tcl_SetObjResult(interp, slavePtr);
	return TCL_OK;
    }
    case OPT_DEBUG:		/* TIP #378 */



	/*
	 * Currently only -frame supported, otherwise ?-option ?value??
	 */

	if (objc < 3 || objc > 5) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path ?-frame ?bool??");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveDebugCmd(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_DELETE: {
	int i;
	InterpInfo *iiPtr;


	for (i = 2; i < objc; i++) {
	    slaveInterp = GetInterp(interp, objv[i]);
	    if (slaveInterp == NULL) {
		return TCL_ERROR;
	    } else if (slaveInterp == interp) {
		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"cannot delete the current interpreter", -1));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			"DELETESELF", NULL);
		return TCL_ERROR;
	    }
	    iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo;
	    Tcl_DeleteCommandFromToken(iiPtr->slave.masterInterp,
		    iiPtr->slave.interpCmd);
	}
	return TCL_OK;
    }
    case OPT_EVAL:


	if (objc < 4) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveEval(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_EXISTS: {
	int exists = 1;



	slaveInterp = GetInterp2(interp, objc, objv);
	if (slaveInterp == NULL) {
	    if (objc > 3) {
		return TCL_ERROR;
	    }
	    Tcl_ResetResult(interp);
	    exists = 0;
	}
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(exists));
	return TCL_OK;
    }
    case OPT_EXPOSE:


	if ((objc < 4) || (objc > 5)) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path hiddenCmdName ?cmdName?");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_HIDE:


	if ((objc < 4) || (objc > 5)) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path cmdName ?hiddenCmdName?");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveHide(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_HIDDEN:


	slaveInterp = GetInterp2(interp, objc, objv);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveHidden(interp, slaveInterp);

    case OPT_ISSAFE:


	slaveInterp = GetInterp2(interp, objc, objv);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_IsSafe(slaveInterp)));
	return TCL_OK;

    case OPT_INVOKEHID: {
	int i;
	const char *namespaceName;

	static const char *const hiddenOptions[] = {
	    "-global",	"-namespace",	"--", NULL
	};
	enum hiddenOption {
	    OPT_GLOBAL,	OPT_NAMESPACE,	OPT_LAST
	};

	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveInvokeHidden(interp, slaveInterp, namespaceName, objc - i,
		objv + i);
    }
    case OPT_LIMIT: {

	static const char *const limitTypes[] = {
	    "commands", "time", NULL
	};
	enum LimitTypes {
	    LIMIT_TYPE_COMMANDS, LIMIT_TYPE_TIME
	};
	int limitType;

	switch ((enum LimitTypes) limitType) {
	case LIMIT_TYPE_COMMANDS:
	    return SlaveCommandLimitCmd(interp, slaveInterp, 4, objc,objv);
	case LIMIT_TYPE_TIME:
	    return SlaveTimeLimitCmd(interp, slaveInterp, 4, objc, objv);
	}
    }
    case OPT_MARKTRUSTED:


	if (objc != 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveMarkTrusted(interp, slaveInterp);

    case OPT_RECLIMIT:


	if (objc != 3 && objc != 4) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path ?newlimit?");
	    return TCL_ERROR;
	}
	slaveInterp = GetInterp(interp, objv[2]);
	if (slaveInterp == NULL) {
	    return TCL_ERROR;
	}
	return SlaveRecursionLimit(interp, slaveInterp, objc - 3, objv + 3);

    case OPT_SLAVES: {

	InterpInfo *iiPtr;
	Tcl_Obj *resultPtr;
	Tcl_HashEntry *hPtr;
	Tcl_HashSearch hashSearch;
	char *string;

	slaveInterp = GetInterp2(interp, objc, objv);

		    Tcl_NewStringObj(string, -1));
	}
	Tcl_SetObjResult(interp, resultPtr);
	return TCL_OK;
    }
    case OPT_TRANSFER:
    case OPT_SHARE: {

	Tcl_Interp *masterInterp;	/* The master of the slave. */
	Tcl_Channel chan;

	if (objc != 5) {
	    Tcl_WrongNumArgs(interp, 2, objv, "srcPath channelId destPath");
	    return TCL_ERROR;
	}
	masterInterp = GetInterp(interp, objv[2]);

		Tcl_TransferResult(masterInterp, TCL_OK, interp);
		return TCL_ERROR;
	    }
	}
	return TCL_OK;
    }
    case OPT_TARGET: {

	InterpInfo *iiPtr;
	Tcl_HashEntry *hPtr;
	Alias *aliasPtr;
	const char *aliasName;

	if (objc != 4) {
	    Tcl_WrongNumArgs(interp, 2, objv, "path alias");

	}
	aliasPtr = Tcl_GetHashValue(hPtr);
	if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) {
	    Tcl_ResetResult(interp);
	    Tcl_AppendResult(interp, "target interpreter for alias \"",
		    aliasName, "\" in path \"", Tcl_GetString(objv[2]),
		    "\" is not my descendant", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
		    "TARGETSHROUDED", NULL);
	    return TCL_ERROR;
	}
	return TCL_OK;
    }
    }
    return TCL_OK;
}

	    return TCL_OK;
	}
	aliasCmdPtr = (Command *) aliasCmd;
	if (aliasCmdPtr == cmdPtr) {
	    Tcl_AppendResult(interp, "cannot define or rename alias \"",
		    Tcl_GetCommandName(cmdInterp, cmd),
		    "\": would create a loop", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
		    "ALIASLOOP", NULL);
	    return TCL_ERROR;
	}

	/*
	 * Otherwise, follow the chain one step further. See if the target
	 * command is an alias - if so, follow the loop to its target command.
	 * Otherwise we do not have a loop.

    if (objc) {
	int length;

	if (TCL_ERROR == TclListObjLength(NULL, objv[0], &length)
		|| (length < 1)) {
	    Tcl_AppendResult(interp, "cmdPrefix must be list of length >= 1",
		    NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
		    "BGERRORFORMAT", NULL);
	    return TCL_ERROR;
	}
	TclSetBgErrorHandler(slaveInterp, objv[0]);
    }
    Tcl_SetObjResult(interp, TclGetBgErrorHandler(slaveInterp));
    return TCL_OK;
}

	resultPtr = Tcl_NewObj();
	Tcl_ListObjAppendElement(NULL, resultPtr,
		Tcl_NewStringObj("-frame", -1));
	Tcl_ListObjAppendElement(NULL, resultPtr,
		Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME));
	Tcl_SetObjResult(interp, resultPtr);
    } else {
	if (Tcl_GetIndexFromObj(interp, objv[0], debugTypes, "debug option",
		0, &debugType) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (debugType == DEBUG_TYPE_FRAME) {
	    if (objc == 2) { /* set */
		if (Tcl_GetBooleanFromObj(interp, objv[1], &debugType)
			!= TCL_OK) {
		    return TCL_ERROR;
		}

		/*
		 * Quietly ignore attempts to disable interp debugging.  This
		 * is a one-way switch as frame debug info is maintained in a
		 * stack that must be consistent once turned on.
		 */

		if (debugType) {
		    iPtr->flags |= INTERP_DEBUG_FRAME;
		}
	    }
	    Tcl_SetObjResult(interp,
		    Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME));
	}

{
    const char *name;

    if (Tcl_IsSafe(interp)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"permission denied: safe interpreter cannot expose commands",
		-1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE",
		NULL);
	return TCL_ERROR;
    }

    name = TclGetString(objv[(objc == 1) ? 0 : 1]);
    if (Tcl_ExposeCommand(slaveInterp, TclGetString(objv[0]),
	    name) != TCL_OK) {
	Tcl_TransferResult(slaveInterp, TCL_ERROR, interp);

    Interp *iPtr;
    int limit;

    if (objc) {
	if (Tcl_IsSafe(interp)) {
	    Tcl_AppendResult(interp, "permission denied: "
		    "safe interpreters cannot change recursion limit", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE",
		    NULL);
	    return TCL_ERROR;
	}
	if (TclGetIntFromObj(interp, objv[0], &limit) == TCL_ERROR) {
	    return TCL_ERROR;
	}
	if (limit <= 0) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "recursion limit must be > 0", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "BADLIMIT",
		    NULL);
	    return TCL_ERROR;
	}
	Tcl_SetRecursionLimit(slaveInterp, limit);
	iPtr = (Interp *) slaveInterp;
	if (interp == slaveInterp && iPtr->numLevels > limit) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "falling back due to new recursion limit", -1));
	    Tcl_SetErrorCode(interp, "TCL", "RECURSION", NULL);
	    return TCL_ERROR;
	}
	Tcl_SetObjResult(interp, objv[0]);
	return TCL_OK;
    } else {
	limit = Tcl_SetRecursionLimit(slaveInterp, 0);
	Tcl_SetObjResult(interp, Tcl_NewIntObj(limit));

{
    const char *name;

    if (Tcl_IsSafe(interp)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"permission denied: safe interpreter cannot hide commands",
		-1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE",
		NULL);
	return TCL_ERROR;
    }

    name = TclGetString(objv[(objc == 1) ? 0 : 1]);
    if (Tcl_HideCommand(slaveInterp, TclGetString(objv[0]), name) != TCL_OK) {
	Tcl_TransferResult(slaveInterp, TCL_ERROR, interp);
	return TCL_ERROR;

{
    int result;

    if (Tcl_IsSafe(interp)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"not allowed to invoke hidden commands from safe interpreter",
		-1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE",
		NULL);
	return TCL_ERROR;
    }

    Tcl_Preserve(slaveInterp);
    Tcl_AllowExceptions(slaveInterp);

    if (namespaceName == NULL) {

    Tcl_Interp *slaveInterp)	/* The slave interpreter which will be marked
				 * trusted. */
{
    if (Tcl_IsSafe(interp)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"permission denied: safe interpreter cannot mark trusted",
		-1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE",
		NULL);
	return TCL_ERROR;
    }
    ((Interp *) slaveInterp)->flags &= ~SAFE_INTERP;
    return TCL_OK;
}

/*

	Tcl_Preserve(interp);
	RunLimitHandlers(iPtr->limit.cmdHandlers, interp);
	if (iPtr->limit.cmdCount >= iPtr->cmdCount) {
	    iPtr->limit.exceeded &= ~TCL_LIMIT_COMMANDS;
	} else if (iPtr->limit.exceeded & TCL_LIMIT_COMMANDS) {
	    Tcl_ResetResult(interp);
	    Tcl_AppendResult(interp, "command count limit exceeded", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "LIMIT", "COMMANDS", NULL);
	    Tcl_Release(interp);
	    return TCL_ERROR;
	}
	Tcl_Release(interp);
    }

    if ((iPtr->limit.active & TCL_LIMIT_TIME) &&

	    if (iPtr->limit.time.sec > now.sec ||
		    (iPtr->limit.time.sec == now.sec &&
		    iPtr->limit.time.usec >= now.usec)) {
		iPtr->limit.exceeded &= ~TCL_LIMIT_TIME;
	    } else if (iPtr->limit.exceeded & TCL_LIMIT_TIME) {
		Tcl_ResetResult(interp);
		Tcl_AppendResult(interp, "time limit exceeded", NULL);
		Tcl_SetErrorCode(interp, "TCL", "LIMIT", "TIME", NULL);
		Tcl_Release(interp);
		return TCL_ERROR;
	    }
	    Tcl_Release(interp);
	}
    }

		Tcl_SetObjResult(interp,
			Tcl_NewIntObj(Tcl_LimitGetCommands(slaveInterp)));
	    }
	    break;
	}
	return TCL_OK;
    } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) {
	Tcl_WrongNumArgs(interp, consumedObjc, objv, "?-option value ...?");

	return TCL_ERROR;
    } else {
	int i, scriptLen = 0, limitLen = 0;
	Tcl_Obj *scriptObj = NULL, *granObj = NULL, *limitObj = NULL;
	int gran = 0, limit = 0;

	for (i=consumedObjc ; i<objc ; i+=2) {

		granObj = objv[i+1];
		if (TclGetIntFromObj(interp, objv[i+1], &gran) != TCL_OK) {
		    return TCL_ERROR;
		}
		if (gran < 1) {
		    Tcl_AppendResult(interp, "granularity must be at "
			    "least 1", NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADVALUE", NULL);
		    return TCL_ERROR;
		}
		break;
	    case OPT_VAL:
		limitObj = objv[i+1];
		(void) Tcl_GetStringFromObj(objv[i+1], &limitLen);
		if (limitLen == 0) {
		    break;
		}
		if (TclGetIntFromObj(interp, objv[i+1], &limit) != TCL_OK) {
		    return TCL_ERROR;
		}
		if (limit < 0) {
		    Tcl_AppendResult(interp, "command limit value must be at "
			    "least 0", NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADVALUE", NULL);
		    return TCL_ERROR;
		}
		break;
	    }
	}
	if (scriptObj != NULL) {
	    SetScriptLimitCallback(interp, TCL_LIMIT_COMMANDS, slaveInterp,

		Tcl_LimitGetTime(slaveInterp, &limitMoment);
		Tcl_SetObjResult(interp, Tcl_NewLongObj(limitMoment.sec));
	    }
	    break;
	}
	return TCL_OK;
    } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) {
	Tcl_WrongNumArgs(interp, consumedObjc, objv, "?-option value ...?");

	return TCL_ERROR;
    } else {
	int i, scriptLen = 0, milliLen = 0, secLen = 0;
	Tcl_Obj *scriptObj = NULL, *granObj = NULL;
	Tcl_Obj *milliObj = NULL, *secObj = NULL;
	int gran = 0;
	Tcl_Time limitMoment;

		granObj = objv[i+1];
		if (TclGetIntFromObj(interp, objv[i+1], &gran) != TCL_OK) {
		    return TCL_ERROR;
		}
		if (gran < 1) {
		    Tcl_AppendResult(interp, "granularity must be at "
			    "least 1", NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADVALUE", NULL);
		    return TCL_ERROR;
		}
		break;
	    case OPT_MILLI:
		milliObj = objv[i+1];
		(void) Tcl_GetStringFromObj(objv[i+1], &milliLen);
		if (milliLen == 0) {
		    break;
		}
		if (TclGetIntFromObj(interp, objv[i+1], &tmp) != TCL_OK) {
		    return TCL_ERROR;
		}
		if (tmp < 0) {
		    Tcl_AppendResult(interp, "milliseconds must be at least 0",
			    NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADVALUE", NULL);
		    return TCL_ERROR;
		}
		limitMoment.usec = ((long)tmp)*1000;
		break;
	    case OPT_SEC:
		secObj = objv[i+1];
		(void) Tcl_GetStringFromObj(objv[i+1], &secLen);
		if (secLen == 0) {
		    break;
		}
		if (TclGetIntFromObj(interp, objv[i+1], &tmp) != TCL_OK) {
		    return TCL_ERROR;
		}
		if (tmp < 0) {
		    Tcl_AppendResult(interp, "seconds must be at least 0",
			    NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADVALUE", NULL);
		    return TCL_ERROR;
		}
		limitMoment.sec = tmp;
		break;
	    }
	}
	if (milliObj != NULL || secObj != NULL) {
	    if (milliObj != NULL) {
		/*
		 * Setting -milliseconds but clearing -seconds, or resetting
		 * -milliseconds but not resetting -seconds? Bad voodoo!
		 */

		if (secObj != NULL && secLen == 0 && milliLen > 0) {
		    Tcl_AppendResult(interp, "may only set -milliseconds "
			    "if -seconds is not also being reset", NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADUSAGE", NULL);
		    return TCL_ERROR;
		}
		if (milliLen == 0 && (secObj == NULL || secLen > 0)) {
		    Tcl_AppendResult(interp, "may only reset -milliseconds "
			    "if -seconds is also being reset", NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP",
			    "BADUSAGE", NULL);
		    return TCL_ERROR;
		}
	    }

	    if (milliLen > 0 || secLen > 0) {
		/*
		 * Force usec to be in range [0..1000000), possibly

	}
	indexArray++;

	if (index < 0 || index > elemCount) {
	    /* ...the index points outside the sublist. */
	    Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("list index out of range", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LSET", "BADINDEX",
		    NULL);
	    break;
	}

	/*
	 * No error conditions.  As long as we're not yet on the last index,
	 * determine the next sublist for the next pass through the loop, and
	 * take steps to make sure it is an unshared copy, as we intend to

    if (listPtr->typePtr != &tclListType) {
	int length, result;

	(void) TclGetStringFromObj(listPtr, &length);
	if (!length) {
	    Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("list index out of range", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LSET", "BADINDEX",
		    NULL);
	    return TCL_ERROR;
	}
	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }

    listRepPtr = listPtr->internalRep.twoPtrValue.ptr1;
    elemCount = listRepPtr->elemCount;
    elemPtrs = &listRepPtr->elements;

    /*
     * Ensure that the index is in bounds.
     */

    if (index<0 || index>=elemCount) {
	if (interp != NULL) {
	    Tcl_SetObjResult(interp,
		    Tcl_NewStringObj("list index out of range", -1));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LSET", "BADINDEX",
		    NULL);
	}
	return TCL_ERROR;
    }

    /*
     * If the internal rep is shared, replace it with an unshared copy.
     */

	    packageName = NULL;
	}
    }
    if ((fullFileName[0] == 0) && (packageName == NULL)) {
	Tcl_SetResult(interp,
		"must specify either file name or package name",
		TCL_STATIC);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "NOLIBRARY",
		NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Figure out which interpreter we're going to load the package into.
     */

	    /*
	     * Can't have two different packages loaded from the same file.
	     */

	    Tcl_AppendResult(interp, "file \"", fullFileName,
		    "\" is already loaded for package \"",
		    pkgPtr->packageName, "\"", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD",
		    "SPLITPERSONALITY", NULL);
	    code = TCL_ERROR;
	    Tcl_MutexUnlock(&packageMutex);
	    goto done;
	}
    }
    Tcl_MutexUnlock(&packageMutex);
    if (pkgPtr == NULL) {

	 * The desired file isn't currently loaded, so load it. It's an error
	 * if the desired package is a static one.
	 */

	if (fullFileName[0] == 0) {
	    Tcl_AppendResult(interp, "package \"", packageName,
		    "\" isn't loaded statically", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "NOTSTATIC",
		    NULL);
	    code = TCL_ERROR;
	    goto done;
	}

	/*
	 * Figure out the module name if it wasn't provided explicitly.
	 */

		    }
		}
		if (p == pkgGuess) {
		    Tcl_DecrRefCount(splitPtr);
		    Tcl_AppendResult(interp,
			    "couldn't figure out package name for ",
			    fullFileName, NULL);
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD",
			    "WHATPACKAGE", NULL);
		    code = TCL_ERROR;
		    goto done;
		}
		Tcl_DStringAppend(&pkgName, pkgGuess, (p - pkgGuess));
		Tcl_DecrRefCount(splitPtr);
	    }
	}

     */

    if (Tcl_IsSafe(target)) {
	if (pkgPtr->safeInitProc == NULL) {
	    Tcl_AppendResult(interp,
		    "can't use package in a safe interpreter: no ",
		    pkgPtr->packageName, "_SafeInit procedure", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "UNSAFE",
		    NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	code = pkgPtr->safeInitProc(target);
    } else {
	if (pkgPtr->initProc == NULL) {
	    Tcl_AppendResult(interp,
		    "can't attach package to interpreter: no ",
		    pkgPtr->packageName, "_Init procedure", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "ENTRYPOINT",
		    NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	code = pkgPtr->initProc(target);
    }

    /*
     * Record the fact that the package has been loaded in the target
     * interpreter.
     */

	    packageName = NULL;
	}
    }
    if ((fullFileName[0] == 0) && (packageName == NULL)) {
	Tcl_SetResult(interp,
		"must specify either file name or package name",
		TCL_STATIC);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NOLIBRARY",
		NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Figure out which interpreter we're going to load the package into.
     */

    if (fullFileName[0] == 0) {
	/*
	 * It's an error to try unload a static package.
	 */

	Tcl_AppendResult(interp, "package \"", packageName,
		"\" is loaded statically and cannot be unloaded", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "STATIC",
		NULL);
	code = TCL_ERROR;
	goto done;
    }
    if (pkgPtr == NULL) {
	/*
	 * The DLL pointed by the provided filename has never been loaded.
	 */

	Tcl_AppendResult(interp, "file \"", fullFileName,
		"\" has never been loaded", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NEVERLOADED",
		NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Scan through the list of packages already loaded in the target
     * interpreter. If the package we want is already loaded there, then we

    if (code != TCL_OK) {
	/*
	 * The package has not been loaded in this interpreter.
	 */

	Tcl_AppendResult(interp, "file \"", fullFileName,
		"\" has never been loaded in this interpreter", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NEVERLOADED",
		NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Ensure that the DLL can be unloaded. If it is a trusted interpreter,
     * pkgPtr->unloadProc must not be NULL for the DLL to be unloadable. If
     * the interpreter is a safe one, pkgPtr->safeUnloadProc must be non-NULL.
     */

    if (Tcl_IsSafe(target)) {
	if (pkgPtr->safeUnloadProc == NULL) {
	    Tcl_AppendResult(interp, "file \"", fullFileName,
		    "\" cannot be unloaded under a safe interpreter", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "CANNOT",
		    NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	unloadProc = pkgPtr->safeUnloadProc;
    } else {
	if (pkgPtr->unloadProc == NULL) {
	    Tcl_AppendResult(interp, "file \"", fullFileName,
		    "\" cannot be unloaded under a trusted interpreter", NULL);
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "CANNOT",
		    NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	unloadProc = pkgPtr->unloadProc;
    }

    /*

	 * Some Unix dlls are poorly behaved - registering things like atexit
	 * calls that can't be unregistered. If you unload such dlls, you get
	 * a core on exit because it wants to call a function in the dll after
	 * it's been unloaded.
	 */

	if (pkgPtr->fileName[0] != '\0') {

	    Tcl_MutexLock(&packageMutex);
	    if (Tcl_FSUnloadFile(interp, pkgPtr->loadHandle) == TCL_OK) {
		/*
		 * Remove this library from the loaded library cache.
		 */

		defaultPtr = pkgPtr;
		if (defaultPtr == firstPackagePtr) {

	    } else {
		code = TCL_ERROR;
	    }
	}
#else
	Tcl_AppendResult(interp, "file \"", fullFileName,
		"\" cannot be unloaded: unloading disabled", NULL);
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "DISABLED",
		NULL);
	code = TCL_ERROR;
#endif
    }

  done:
    Tcl_DStringFree(&pkgName);
    Tcl_DStringFree(&tmp);