Tcl Source Code

2011-04-16  Donal K. Fellows  <[email protected]>

	* generic/tclFCmd.c (TclFileAttrsCmd): Add comments to make this code
	easier to understand. Added a panic to handle the case where the VFS
	layer does something odd.

2011-04-13  Don Porter  <[email protected]>

	* generic/tclUtil.c:	[Bug 3285375]: Rewrite of Tcl_Concat*()
	routines to prevent segfaults on buffer overflow.  Build them out of
	existing primitives already coded to handle overflow properly.  Uses
	the new TclTrim*() routines.

	* generic/tclCmdMZ.c:	New internal utility routines TclTrimLeft()
	* generic/tclInt.h:	and TclTrimRight().  Refactor the
	* generic/tclUtil.c:	[string trim*] implementations to use them.

2011-04-13  Miguel Sofer  <[email protected]>

	* generic/tclVar.c: [Bug 2662380]: Fix crash caused by appending to a
	variable with a write trace that unsets it.

2011-04-13  Donal K. Fellows  <[email protected]>

	* generic/tclUtil.c (Tcl_ConcatObj): [Bug 3285375]: Make the crash
	less mysterious through the judicious use of a panic. Not yet properly
	fixed, but at least now clearer what the failure mode is.

2011-04-12  Don Porter  <[email protected]>

	* tests/string.test:	Test for [Bug 3285472]. Not buggy in trunk.

2011-04-12  Venkat Iyer <[email protected]>

	* library/tzdata/Atlantic/Stanley: Update to Olson tzdata2011f

2011-04-12  Miguel Sofer  <[email protected]>

	* generic/tclBasic.c: Fix for [Bug 2440625], kbk's patch

2011-04-11  Miguel Sofer  <[email protected]>

	* generic/tclBasic.c:
	* tests/coroutine.test: [Bug 3282869]: Ensure that 'coroutine eval'
	runs the initial command in the proper context.

2011-04-11  Jan Nijtmans  <[email protected]>

	* generic/tcl.h:    Fix for [Bug 3281728]: Tcl sources from 2011-04-06
	* unix/tcl.m4:      do not build on GCC9 (RH9)
	* unix/configure:

2011-04-08  Jan Nijtmans  <[email protected]>

	* win/tclWinPort.h: Fix for [Bug 3280043]: win2k: unresolved DLL
	* win/configure.in: imports.
	* win/configure

2011-04-06  Miguel Sofer  <[email protected]>

	* generic/tclExecute.c (TclCompileObj): Earlier return if Tip280
	gymnastics not needed.

	* generic/tclExecute.c: Fix for [Bug 3274728]: making *catchTop an
	unsigned long.

2011-04-06  Jan Nijtmans  <[email protected]>

	* unix/tclAppInit.c:  Make symbols "main" and "Tcl_AppInit"
	MODULE_SCOPE: there is absolutely no reason for exporting them.
	* unix/tcl.m4:        Don't use -fvisibility=hidden with static
	* unix/configure      libraries (--disable-shared)

argument after the rule selection word is a two-element list.  If the
\fIscript\fR returns with a condition of \fBTCL_BREAK\fR, no further
key/value pairs are considered for inclusion in the resulting
dictionary, and a condition of \fBTCL_CONTINUE\fR is equivalent to a false
result. The key/value pairs are tested in the order in which the keys
were inserted into the dictionary.
.TP
\fBdict filter \fIdictionaryValue \fBvalue \fR?\fIglobPattern ...\fR?
.VS 8.6
The value rule only matches those key/value pairs whose values match any
of the given patterns (in the style of \fBstring match\fR.)
.VE 8.6
.RE
.TP
\fBdict for {\fIkeyVar valueVar\fB} \fIdictionaryValue body\fR

 *
 * Note on converting between Tcl_WideInt and strings. This implementation (in
 * tclObj.c) depends on the function
 * sprintf(...,"%" TCL_LL_MODIFIER "d",...).
 */

#if !defined(TCL_WIDE_INT_TYPE)&&!defined(TCL_WIDE_INT_IS_LONG)
#   if defined(__WIN32__)








#      define TCL_WIDE_INT_TYPE __int64
#      ifdef __BORLANDC__
typedef struct stati64 Tcl_StatBuf;
#         define TCL_LL_MODIFIER	"L"
#      else /* __BORLANDC__ */
#         if (defined(_MSC_VER) && (_MSC_VER < 1400)) || !defined(_M_IX86) || defined(__GNUC__)
typedef struct _stati64	Tcl_StatBuf;
#         else
typedef struct _stat64	Tcl_StatBuf;
#         endif /* _MSC_VER < 1400 */
#         define TCL_LL_MODIFIER	"I64"
#      endif /* __BORLANDC__ */
#   elif defined(__GNUC__)
#      define TCL_WIDE_INT_TYPE long long
#      define TCL_LL_MODIFIER	"ll"
typedef struct stat	Tcl_StatBuf;
#   else /* __WIN32__ */
/*
 * Don't know what platform it is and configure hasn't discovered what is
 * going on for us. Try to guess...
 */
#      ifdef NO_LIMITS_H
#	  error please define either TCL_WIDE_INT_TYPE or TCL_WIDE_INT_IS_LONG

    cmdPtr->refCount++;

    /*
     * Find the objProc to call: nreProc if available, objProc otherwise. Push
     * a callback to do the actual running.
     */














    if (cmdPtr->nreProc) {
        TclNRAddCallback(interp, NRRunObjProc, cmdPtr,
                INT2PTR(objc), (ClientData) objv, NULL);
        return TCL_OK;
    } else {
	return cmdPtr->objProc(cmdPtr->objClientData, interp, objc, objv);
    }        

}

void
TclPushTailcallPoint(
    Tcl_Interp *interp)
{
    TclNRAddCallback(interp, NRCommand, NULL, NULL, NULL, NULL);

NRRunObjProc(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    /* OPT: do not call? */


    Command* cmdPtr = data[0];
    int objc = PTR2INT(data[1]);
    Tcl_Obj **objv = data[2];


    return cmdPtr->nreProc(cmdPtr->objClientData, interp, objc, objv);


}


/*
 *----------------------------------------------------------------------
 *
 * TEOV_Exception	 -

				 * execute. */
    int flags)			/* Collection of OR-ed bits that control the
				 * evaluation of the script. Supported values
				 * are TCL_EVAL_GLOBAL and TCL_EVAL_DIRECT. */
{
    Interp *iPtr = (Interp *) interp;
    int result;


    /*
     * This function consists of three independent blocks for: direct
     * evaluation of canonical lists, compileation and bytecode execution and
     * finally direct evaluation. Precisely one of these blocks will be run.
     */



    if (TclListObjIsCanonical(objPtr)) {
	Tcl_Obj *listPtr = objPtr;
	int objc;
	Tcl_Obj **objv;

	/*
	 * Pure List Optimization (no string representation). In this case, we
	 * can safely use Tcl_EvalObjv instead and get an appreciable

InfoLoadedCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    const char *interpName;


    if ((objc != 1) && (objc != 2)) {
	Tcl_WrongNumArgs(interp, 1, objv, "?interp?");
	return TCL_ERROR;
    }

    if (objc == 1) {		/* Get loaded pkgs in all interpreters. */
	interpName = NULL;
    } else {			/* Get pkgs just in specified interp. */
	interpName = TclGetString(objv[1]);
    }
    return TclGetLoadedPackages(interp, interpName);

}

/*
 *----------------------------------------------------------------------
 *
 * InfoNameOfExecutableCmd --
 *

    result = TclListObjGetElements(interp, objv[1], &listLen, &elemPtrs);
    if (result != TCL_OK) {
	return result;
    }

    if (Tcl_IsShared(objv[1]) ||
	    ((ListRepPtr(objv[1])->refCount > 1))) {
	Tcl_SetObjResult(interp, Tcl_NewListObj(last - first + 1,
		&elemPtrs[first]));
    } else {
	/*
	 * In-place is possible.
	 */

    /*
     * Get an empty list object that is allocated large enough to hold each
     * init value elementCount times.
     */

    listPtr = Tcl_NewListObj(totalElems, NULL);
    if (totalElems) {
	List *listRepPtr = ListRepPtr(listPtr);

	listRepPtr->elemCount = elementCount*objc;
	dataArray = &listRepPtr->elements;
    }

    /*
     * Set the elements. Note that we handle the common degenerate case of a

     */

    if (!elemc) {
	Tcl_SetObjResult(interp, objv[1]);
	return TCL_OK;
    }

    if (Tcl_IsShared(objv[1])
	    || (ListRepPtr(objv[1])->refCount > 1)) {	/* Bug 1675044 */
	Tcl_Obj *resultObj, **dataArray;
	List *listRepPtr;


	resultObj = Tcl_NewListObj(elemc, NULL);
	listRepPtr = ListRepPtr(resultObj);
	listRepPtr->elemCount = elemc;
	dataArray = &listRepPtr->elements;

	for (i=0,j=elemc-1 ; i<elemc ; i++,j--) {
	    dataArray[j] = elemv[i];
	    Tcl_IncrRefCount(elemv[i]);
	}

	Tcl_SetObjResult(interp, resultObj);
    } else {










	/*
	 * Not shared, so swap "in place". This relies on Tcl_LOGE above
	 * returning a pointer to the live array of Tcl_Obj values.
	 */

	for (i=0,j=elemc-1 ; i<j ; i++,j--) {

     */

    if (sortInfo.resultCode == TCL_OK) {
	List *listRepPtr;
	Tcl_Obj **newArray, *objPtr;

	resultPtr = Tcl_NewListObj(sortInfo.numElements * groupSize, NULL);
	listRepPtr = ListRepPtr(resultPtr);
	newArray = &listRepPtr->elements;
	if (group) {
	    for (i=0; elementPtr!=NULL ; elementPtr=elementPtr->nextPtr) {
		idx = elementPtr->payload.index;
		for (j = 0; j < groupSize; j++) {
		    if (indices) {
			objPtr = Tcl_NewIntObj(idx + j - groupOffset);

static int
StringTrimCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{


    const char *string1, *string2;
    int triml, trimr, length1, length2;

    if (objc == 3) {
	string2 = TclGetStringFromObj(objv[2], &length2);
    } else if (objc == 2) {
	string2 = DEFAULT_TRIM_SET;
	length2 = strlen(DEFAULT_TRIM_SET);
    } else {
	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
	return TCL_ERROR;
    }
    string1 = TclGetStringFromObj(objv[1], &length1);








    triml = TclTrimLeft(string1, length1, string2, length2);



    trimr = TclTrimRight(string1 + triml, length1 - triml, string2, length2);






































    Tcl_SetObjResult(interp,
	    Tcl_NewStringObj(string1 + triml, length1 - triml - trimr));
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * StringTrimLCmd --

static int
StringTrimLCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{


    const char *string1, *string2;
    int trim, length1, length2;

    if (objc == 3) {
	string2 = TclGetStringFromObj(objv[2], &length2);
    } else if (objc == 2) {
	string2 = DEFAULT_TRIM_SET;
	length2 = strlen(DEFAULT_TRIM_SET);
    } else {
	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
	return TCL_ERROR;
    }
    string1 = TclGetStringFromObj(objv[1], &length1);








    trim = TclTrimLeft(string1, length1, string2, length2);


















    Tcl_SetObjResult(interp, Tcl_NewStringObj(string1+trim, length1-trim));
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * StringTrimRCmd --

static int
StringTrimRCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{


    const char *string1, *string2;
    int trim, length1, length2;

    if (objc == 3) {
	string2 = TclGetStringFromObj(objv[2], &length2);
    } else if (objc == 2) {
	string2 = DEFAULT_TRIM_SET;
	length2 = strlen(DEFAULT_TRIM_SET);
    } else {
	Tcl_WrongNumArgs(interp, 1, objv, "string ?chars?");
	return TCL_ERROR;
    }
    string1 = TclGetStringFromObj(objv[1], &length1);







    trim = TclTrimRight(string1, length1, string2, length2);


















    Tcl_SetObjResult(interp, Tcl_NewStringObj(string1, length1-trim));
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TclInitStringCmd --

	    Tcl_SetResult(interp, "insufficient memory to create list",
		    TCL_STATIC);
	    Tcl_SetErrorCode(interp, "TCL", "MEMORY", NULL);
	    return TCL_ERROR;
	}

	if (n) {
	    List *listRepPtr = ListRepPtr(listPtr);

	    Tcl_DictSearch s;
	    Tcl_Obj *key, **vals;
	    int done, i = 0;

	    listRepPtr->elemCount = n;
	    vals = &listRepPtr->elements;

    }

    objc -= 2;
    objv += 2;
    result = TCL_ERROR;
    Tcl_SetErrno(0);

    /*
     * Get the set of attribute names from the filesystem.
     */

    attributeStrings = Tcl_FSFileAttrStrings(filePtr, &objStrings);
    if (attributeStrings == NULL) {
	int index;
	Tcl_Obj *objPtr;

	if (objStrings == NULL) {
	    if (Tcl_GetErrno() != 0) {
		/*
		 * There was an error, probably that the filePtr is not
		 * accepted by any filesystem
		 */
		Tcl_AppendResult(interp, "could not read \"",
			TclGetString(filePtr), "\": ", Tcl_PosixError(interp),
			NULL);

	    }

	    return TCL_ERROR;
	}

	/*
	 * We own the object now.
	 */

	Tcl_IncrRefCount(objStrings);

		TclStackAlloc(interp, (1+numObjStrings) * sizeof(char *));
	for (index = 0; index < numObjStrings; index++) {
	    Tcl_ListObjIndex(interp, objStrings, index, &objPtr);
	    attributeStringsAllocated[index] = TclGetString(objPtr);
	}
	attributeStringsAllocated[index] = NULL;
	attributeStrings = attributeStringsAllocated;
    } else if (objStrings != NULL) {
	Tcl_Panic("must not update objPtrRef's variable and return non-NULL");
    }

    /*
     * Process the attributes to produce a list of all of them, the value of a
     * particular attribute, or to set one or more attributes (depending on
     * the number of arguments).
     */

    if (objc == 0) {
	/*
	 * Get all attributes.
	 */

	int index, res = TCL_OK, nbAtts = 0;
	Tcl_Obj *listPtr;

		    objv[i + 1]) != TCL_OK) {
		goto end;
	    }
	}
    }
    result = TCL_OK;



    /*
     * Free up the array we allocated and drop our reference to any list of
     * attribute names issued by the filesystem.
     */

  end:
    if (attributeStringsAllocated != NULL) {
	TclStackFree(interp, (void *) attributeStringsAllocated);
    }




    if (objStrings != NULL) {
	Tcl_DecrRefCount(objStrings);

    }
    return result;
}

/*
 *----------------------------------------------------------------------
 *

#define ListObjGetElements(listPtr, objc, objv) \
    ((objv) = &(ListRepPtr(listPtr)->elements), \
     (objc) = ListRepPtr(listPtr)->elemCount)

#define ListObjLength(listPtr, len) \
    ((len) = ListRepPtr(listPtr)->elemCount)

#define ListObjIsCanonical(listPtr) \
    (((listPtr)->bytes == NULL) || ListRepPtr(listPtr)->canonicalFlag)

#define TclListObjGetElements(interp, listPtr, objcPtr, objvPtr) \
    (((listPtr)->typePtr == &tclListType) \
	    ? ((ListObjGetElements((listPtr), *(objcPtr), *(objvPtr))), TCL_OK)\
	    : Tcl_ListObjGetElements((interp), (listPtr), (objcPtr), (objvPtr)))

#define TclListObjLength(interp, listPtr, lenPtr) \
    (((listPtr)->typePtr == &tclListType) \
	    ? ((ListObjLength((listPtr), *(lenPtr))), TCL_OK)\
	    : Tcl_ListObjLength((interp), (listPtr), (lenPtr)))

#define TclListObjIsCanonical(listPtr) \
    (((listPtr)->typePtr == &tclListType) ? ListObjIsCanonical((listPtr)) : 0)

/*
 * Macros providing a faster path to integers: Tcl_GetLongFromObj everywhere,
 * Tcl_GetIntFromObj and TclGetIntForIndex on platforms where longs are ints.
 *
 * WARNING: these macros eval their args more than once.
 */

MODULE_SCOPE int	TclSubstOptions(Tcl_Interp *interp, int numOpts,
			    Tcl_Obj *const opts[], int *flagPtr);
MODULE_SCOPE void	TclSubstParse(Tcl_Interp *interp, const char *bytes,
			    int numBytes, int flags, Tcl_Parse *parsePtr,
			    Tcl_InterpState *statePtr);
MODULE_SCOPE int	TclSubstTokens(Tcl_Interp *interp, Tcl_Token *tokenPtr,
			    int count, int *tokensLeftPtr);
MODULE_SCOPE int	TclTrimLeft(const char *bytes, int numBytes,
			    const char *trim, int numTrim);
MODULE_SCOPE int	TclTrimRight(const char *bytes, int numBytes,
			    const char *trim, int numTrim);
MODULE_SCOPE Tcl_Obj *	TclpNativeToNormalized(ClientData clientData);
MODULE_SCOPE Tcl_Obj *	TclpFilesystemPathType(Tcl_Obj *pathPtr);
MODULE_SCOPE int	TclpDlopen(Tcl_Interp *interp, Tcl_Obj *pathPtr,
			    Tcl_LoadHandle *loadHandle,
			    Tcl_FSUnloadFileProc **unloadProcPtr);
MODULE_SCOPE int	TclpUtime(Tcl_Obj *pathPtr, struct utimbuf *tval);
#ifdef TCL_LOAD_FROM_MEMORY

	}

	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }
    listRepPtr = ListRepPtr(listPtr);
    *objcPtr = listRepPtr->elemCount;
    *objvPtr = &listRepPtr->elements;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------

	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }

    listRepPtr = ListRepPtr(listPtr);
    numElems = listRepPtr->elemCount;
    numRequired = numElems + 1 ;

    /*
     * If there is no room in the current array of element pointers, allocate
     * a new, larger array and copy the pointers to it. If the List struct is
     * shared, allocate a new one.

	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }

    listRepPtr = ListRepPtr(listPtr);
    if ((index < 0) || (index >= listRepPtr->elemCount)) {
	*objPtrPtr = NULL;
    } else {
	*objPtrPtr = (&listRepPtr->elements)[index];
    }

    return TCL_OK;

	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }

    listRepPtr = ListRepPtr(listPtr);
    *intPtr = listRepPtr->elemCount;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *

     * Note that when count == 0 and objc == 0, this routine is logically a
     * no-op, removing and adding no elements to the list. However, by flowing
     * through this routine anyway, we get the important side effect that the
     * resulting listPtr is a list in canoncial form. This is important.
     * Resist any temptation to optimize this case.
     */

    listRepPtr = ListRepPtr(listPtr);
    elemPtrs = &listRepPtr->elements;
    numElems = listRepPtr->elemCount;

    if (first < 0) {
	first = 0;
    }
    if (first >= numElems) {

	}
	result = SetListFromAny(interp, listPtr);
	if (result != TCL_OK) {
	    return result;
	}
    }

    listRepPtr = ListRepPtr(listPtr);
    elemCount = listRepPtr->elemCount;
    elemPtrs = &listRepPtr->elements;

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

 *----------------------------------------------------------------------
 */

static void
FreeListInternalRep(
    Tcl_Obj *listPtr)		/* List object with internal rep to free. */
{
    register List *listRepPtr = ListRepPtr(listPtr);
    register Tcl_Obj **elemPtrs = &listRepPtr->elements;
    register Tcl_Obj *objPtr;
    int numElems = listRepPtr->elemCount;
    int i;

    if (--listRepPtr->refCount <= 0) {
	for (i = 0;  i < numElems;  i++) {

 */

static void
DupListInternalRep(
    Tcl_Obj *srcPtr,		/* Object with internal rep to copy. */
    Tcl_Obj *copyPtr)		/* Object with internal rep to set. */
{
    List *listRepPtr = ListRepPtr(srcPtr);

    listRepPtr->refCount++;
    copyPtr->internalRep.twoPtrValue.ptr1 = listRepPtr;
    copyPtr->internalRep.twoPtrValue.ptr2 = NULL;
    copyPtr->typePtr = &tclListType;
}


static void
UpdateStringOfList(
    Tcl_Obj *listPtr)		/* List object with string rep to update. */
{
#   define LOCAL_SIZE 20
    int localFlags[LOCAL_SIZE], *flagPtr;
    List *listRepPtr = ListRepPtr(listPtr);
    int numElems = listRepPtr->elemCount;
    register int i;
    const char *elem;
    char *dst;
    int length;
    Tcl_Obj **elemPtrs;

    TclUtfToUniChar(buf, &ch);
    return (char) ch;
}

/*
 *----------------------------------------------------------------------
 *
 * TclTrimRight --
 *	Takes two counted strings in the Tcl encoding which must both be
 *	null terminated.  Conceptually trims from the right side of the
 *	first string all characters found in the second string.
 *
 * Results:
 *	The number of bytes to be removed from the end of the string.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TclTrimRight(
    const char *bytes,	/* String to be trimmed... */
    int numBytes,	/* ...and its length in bytes */
    const char *trim,	/* String of trim characters... */
    int numTrim)	/* ...and its length in bytes */
{
    const char *p = bytes + numBytes;
    int pInc;

    if ((bytes[numBytes] != '\0') || (trim[numTrim] != '\0')) {
	Tcl_Panic("TclTrimRight works only on null-terminated strings");
    }

    /* Empty strings -> nothing to do */
    if ((numBytes == 0) || (numTrim == 0)) {
	return 0;
    }

    /* Outer loop: iterate over string to be trimmed */
    do {
	Tcl_UniChar ch1;
	const char *q = trim;
	int bytesLeft = numTrim;

	p = Tcl_UtfPrev(p, bytes);
 	pInc = TclUtfToUniChar(p, &ch1);

	/* Inner loop: scan trim string for match to current character */
	do {
	    Tcl_UniChar ch2;
	    int qInc = TclUtfToUniChar(q, &ch2);

	    if (ch1 == ch2) {
		break;
	    }

	    q += qInc;
	    bytesLeft -= qInc;
	} while (bytesLeft);

	if (bytesLeft == 0) {
	    /* No match; trim task done; *p is last non-trimmed char */
	    p += pInc;
	    break;
	}
    } while (p > bytes);

    return numBytes - (p - bytes);
}

/*
 *----------------------------------------------------------------------
 *
 * TclTrimLeft --
 *	Takes two counted strings in the Tcl encoding which must both be
 *	null terminated.  Conceptually trims from the left side of the
 *	first string all characters found in the second string.
 *
 * Results:
 *	The number of bytes to be removed from the start of the string.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TclTrimLeft(
    const char *bytes,	/* String to be trimmed... */
    int numBytes,	/* ...and its length in bytes */
    const char *trim,	/* String of trim characters... */
    int numTrim)	/* ...and its length in bytes */
{
    const char *p = bytes;

    if ((bytes[numBytes] != '\0') || (trim[numTrim] != '\0')) {
	Tcl_Panic("TclTrimLeft works only on null-terminated strings");
    }

    /* Empty strings -> nothing to do */
    if ((numBytes == 0) || (numTrim == 0)) {
	return 0;
    }

    /* Outer loop: iterate over string to be trimmed */
    do {
	Tcl_UniChar ch1;
	int pInc = TclUtfToUniChar(p, &ch1);
	const char *q = trim;
	int bytesLeft = numTrim;

	/* Inner loop: scan trim string for match to current character */
	do {
	    Tcl_UniChar ch2;
	    int qInc = TclUtfToUniChar(q, &ch2);

	    if (ch1 == ch2) {
		break;
	    }

	    q += qInc;
	    bytesLeft -= qInc;
	} while (bytesLeft);

	if (bytesLeft == 0) {
	    /* No match; trim task done; *p is first non-trimmed char */
	    break;
	}

	p += pInc;
	numBytes -= pInc;
    } while (numBytes);

    return p - bytes;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_Concat --
 *
 *	Concatenate a set of strings into a single large string.
 *
 * Results:
 *	The return value is dynamically-allocated string containing a
 *	concatenation of all the strings in argv, with spaces between the
 *	original argv elements.
 *
 * Side effects:
 *	Memory is allocated for the result; the caller is responsible for
 *	freeing the memory.
 *
 *----------------------------------------------------------------------
 */

/* The whitespace characters trimmed during [concat] operations */
#define CONCAT_WS " \f\v\r\t\n"
#define CONCAT_WS_SIZE (int) (sizeof(CONCAT_WS "") - 1)

char *
Tcl_Concat(
    int argc,			/* Number of strings to concatenate. */
    const char *const *argv)	/* Array of strings to concatenate. */
{
    int i, needSpace = 0, bytesNeeded = 0;

    char *result, *p;




    /* Dispose of the empty result corner case first to simplify later code */
    if (argc == 0) {
	result = (char *) ckalloc(1);
	result[0] = '\0';
	return result;
    }


    /* First allocate the result buffer at the size required */
    for (i = 0;  i < argc;  i++) {
	bytesNeeded += strlen(argv[i]);
	if (bytesNeeded < 0) {
	    Tcl_Panic("Tcl_Concat: max size of Tcl value exceeded");
	}
    }
    if (bytesNeeded + argc - 1 < 0) {
	/*


	 * Panic test could be tighter, but not going to bother for 
	 * this legacy routine.
	 */
	Tcl_Panic("Tcl_Concat: max size of Tcl value exceeded");
    }
    /* All element bytes + (argc - 1) spaces + 1 terminating NULL */
    result = (char *) ckalloc((unsigned) (bytesNeeded + argc));

    for (p = result, i = 0;  i < argc;  i++) {
	int trim, elemLength;
	const char *element;
	
	element = argv[i];
	elemLength = strlen(argv[i]);

	/* Trim away the leading whitespace */
	trim = TclTrimLeft(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
	element += trim;
	elemLength -= trim;

	/*
	 * Trim away the trailing whitespace.  Do not permit trimming
	 * to expose a final backslash character.
	 */


	trim = TclTrimRight(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
	trim -= trim && (element[elemLength - trim - 1] == '\\');
	elemLength -= trim;


	/* If we're left with empty element after trimming, do nothing */
	if (elemLength == 0) {
	    continue;
	}


	/* Append to the result with space if needed */
	if (needSpace) {
	    *p++ = ' ';

	}


	memcpy(p, element, (size_t) elemLength);
	p += elemLength;
	needSpace = 1;
    }
    *p = '\0';
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_ConcatObj --

 */

Tcl_Obj *
Tcl_ConcatObj(
    int objc,			/* Number of objects to concatenate. */
    Tcl_Obj *const objv[])	/* Array of objects to concatenate. */
{
    int i, elemLength, needSpace = 0, bytesNeeded = 0;

    const char *element;

    Tcl_Obj *objPtr, *resPtr;

    /*
     * Check first to see if all the items are of list type or empty. If so,
     * we will concat them together as lists, and return a list object. This
     * is only valid when the lists are in canonical form.



     */

    for (i = 0;  i < objc;  i++) {
	int length;

	objPtr = objv[i];
	if (TclListObjIsCanonical(objPtr)) {




	    continue;
	}


	Tcl_GetStringFromObj(objPtr, &length);
	if (length > 0) {
	    break;
	}
    }
    if (i == objc) {
	Tcl_Obj **listv;
	int listc;

	resPtr = NULL;
	for (i = 0;  i < objc;  i++) {
	    /*
	     * Tcl_ListObjAppendList could be used here, but this saves us a
	     * bit of type checking (since we've already done it). Use of
	     * INT_MAX tells us to always put the new stuff on the end. It
	     * will be set right in Tcl_ListObjReplace.
	     * Note that all objs at this point are either lists or have an
	     * empty string rep.
	     */

	    objPtr = objv[i];
	    if (objPtr->bytes && objPtr->length == 0) {
		continue;
	    }
	    TclListObjGetElements(NULL, objPtr, &listc, &listv);
	    if (listc) {
		if (resPtr) {
		    Tcl_ListObjReplace(NULL, resPtr, INT_MAX, 0, listc, listv);
		} else {

    }

    /*
     * Something cannot be determined to be safe, so build the concatenation
     * the slow way, using the string representations.
     */

    /* First try to pre-allocate the size required */
    for (i = 0;  i < objc;  i++) {

	element = TclGetStringFromObj(objv[i], &elemLength);

	bytesNeeded += elemLength;


	if (bytesNeeded < 0) {

	    break;
	}
    }
    /*


     * Does not matter if this fails, will simply try later to build up
     * the string with each Append reallocating as needed with the usual
     * string append algorithm.  When that fails it will report the error.
     */
    TclNewObj(resPtr);

    Tcl_AttemptSetObjLength(resPtr, bytesNeeded + objc - 1);





    Tcl_SetObjLength(resPtr, 0);






    for (i = 0;  i < objc;  i++) {
	int trim;
	
	element = TclGetStringFromObj(objv[i], &elemLength);

	/* Trim away the leading whitespace */
	trim = TclTrimLeft(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
	element += trim;
	elemLength -= trim;


	/*
	 * Trim away the trailing whitespace.  Do not permit trimming
	 * to expose a final backslash character.

	 */

	trim = TclTrimRight(element, elemLength, CONCAT_WS, CONCAT_WS_SIZE);
	trim -= trim && (element[elemLength - trim - 1] == '\\');


	elemLength -= trim;

	/* If we're left with empty element after trimming, do nothing */
	if (elemLength == 0) {
	    continue;
	}






	/* Append to the result with space if needed */
	if (needSpace) {




	    Tcl_AppendToObj(resPtr, " ", 1);
	}
	Tcl_AppendToObj(resPtr, element, elemLength);
	needSpace = 1;
    }




    return resPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_StringMatch --
 *

	if (varPtr == NULL) {
	    return TCL_ERROR;
	}
	for (i=2 ; i<objc ; i++) {
	    /*
	     * Note that we do not need to increase the refCount of the Var
	     * pointers: should a trace delete the variable, the return value
	     * of TclPtrSetVar will be NULL or emptyObjPtr, and we will not
	     * access the variable again.
	     */

	    varValuePtr = TclPtrSetVar(interp, varPtr, arrayPtr, objv[1],
		    NULL, objv[i], TCL_APPEND_VALUE|TCL_LEAVE_ERR_MSG, -1);
	    if ((varValuePtr == NULL) ||
		    (varValuePtr == ((Interp *) interp)->emptyObjPtr)) {
		return TCL_ERROR;
	    }
	}
    }
    Tcl_SetObjResult(interp, varValuePtr);
    return TCL_OK;
}

    {1188712800 -10800 1 FKST}
    {1208667600 -14400 0 FKT}
    {1220767200 -10800 1 FKST}
    {1240117200 -14400 0 FKT}
    {1252216800 -10800 1 FKST}
    {1271566800 -14400 0 FKT}
    {1283666400 -10800 1 FKST}

    {1315112400 -10800 1 FKST}
    {1334466000 -14400 0 FKT}
    {1346565600 -10800 1 FKST}
    {1366520400 -14400 0 FKT}
    {1378015200 -10800 1 FKST}
    {1397970000 -14400 0 FKT}
    {1410069600 -10800 1 FKST}
    {1429419600 -14400 0 FKT}

    list [catch {load [file join $testDir pkgc$ext] foo} msg] $msg $errorCode
} -match glob \
    -result [list 1 {cannot find symbol "Foo_Init"*} \
		 {TCL LOOKUP LOAD_SYMBOL *Foo_Init}]
test load-2.4 {loading with no _SafeInit procedure} [list $dll $loaded] {
    list [catch {load [file join $testDir pkga$ext] {} child} msg] $msg
} {1 {can't use package in a safe interpreter: no Pkga_SafeInit procedure}}





test load-3.1 {error in _Init procedure, same interpreter} \
	[list $dll $loaded] {
    list [catch {load [file join $testDir pkge$ext] pkge} msg] \
	    $msg $::errorInfo $::errorCode
} {1 {couldn't open "non_existent": no such file or directory} {couldn't open "non_existent": no such file or directory
    while executing

    string reverse $x
} \udead\ubeef
test string-24.11 {string reverse command - corner case} {
    set x \ubeef
    set y \udead
    string reverse $x$y
} \udead\ubeef
test string-24.12 {string reverse command - corner case} {
    set x \ubeef
    set y \udead
    string is ascii [string reverse $x$y]
} 0

test string-25.1 {string is list} {
    string is list {a b c}
} 1
test string-25.2 {string is list} {
    string is list "a \{b c"
} 0

 * Prototypes for procedures defined later in this file:
 */

static int    Pkga_EqObjCmd(ClientData clientData,
		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);
static int    Pkga_QuoteObjCmd(ClientData clientData,
		Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]);












/*
 *----------------------------------------------------------------------
 *
 * Pkga_EqObjCmd --
 *
 *	This procedure is invoked to process the "pkga_eq" Tcl command. It

static int
Pkga_QuoteObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument strings. */
{
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "value");
	return TCL_ERROR;
    }



    Tcl_SetObjResult(interp, objv[1]);

    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Pkga_Init --

 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#undef STATIC_BUILD
#include "tcl.h"


/*
 * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the
 * Pkgua_Init declaration is in the source file itself, which is only
 * accessed when we are building a library.
 */
#undef TCL_STORAGE_CLASS

static int
PkguaQuoteObjCmd(
    ClientData dummy,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument strings. */
{
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "value");
	return TCL_ERROR;
    }









    Tcl_SetObjResult(interp, objv[1]);

    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Pkgua_Init --

		fi
		done
	    fi
	])

	if test x"${ac_cv_c_tclconfig}" = x ; then
	    TCL_BIN_DIR="# no Tcl configs found"
	    AC_MSG_ERROR([Can't find Tcl configuration definitions. Use --with-tcl to specify a directory containing tclConfig.sh])

	else
	    no_tcl=
	    TCL_BIN_DIR="${ac_cv_c_tclconfig}"
	    AC_MSG_RESULT([found ${TCL_BIN_DIR}/tclConfig.sh])
	fi
    fi
])

		    fi
		done
	    fi
	])

	if test x"${ac_cv_c_tkconfig}" = x ; then
	    TK_BIN_DIR="# no Tk configs found"
	    AC_MSG_ERROR([Can't find Tk configuration definitions. Use --with-tk to specify a directory containing tkConfig.sh])

	else
	    no_tk=
	    TK_BIN_DIR="${ac_cv_c_tkconfig}"
	    AC_MSG_RESULT([found ${TK_BIN_DIR}/tkConfig.sh])
	fi
    fi
])

    if test -f "${TCL_BIN_DIR}/Makefile" ; then
        TCL_LIB_SPEC="${TCL_BUILD_LIB_SPEC}"
        TCL_STUB_LIB_SPEC="${TCL_BUILD_STUB_LIB_SPEC}"
        TCL_STUB_LIB_PATH="${TCL_BUILD_STUB_LIB_PATH}"
    elif test "`uname -s`" = "Darwin"; then
	# If Tcl was built as a framework, attempt to use the libraries
	# from the framework at the given location so that linking works
	# against Tcl.framework installed in an arbitrary location.
	case ${TCL_DEFS} in
	    *TCL_FRAMEWORK*)
		if test -f "${TCL_BIN_DIR}/${TCL_LIB_FILE}"; then
		    for i in "`cd "${TCL_BIN_DIR}"; pwd`" \
			     "`cd "${TCL_BIN_DIR}"/../..; pwd`"; do
			if test "`basename "$i"`" = "${TCL_LIB_FILE}.framework"; then
			    TCL_LIB_SPEC="-F`dirname "$i" | sed -e 's/ /\\\\ /g'` -framework ${TCL_LIB_FILE}"

    if test -f "${TK_BIN_DIR}/Makefile" ; then
        TK_LIB_SPEC="${TK_BUILD_LIB_SPEC}"
        TK_STUB_LIB_SPEC="${TK_BUILD_STUB_LIB_SPEC}"
        TK_STUB_LIB_PATH="${TK_BUILD_STUB_LIB_PATH}"
    elif test "`uname -s`" = "Darwin"; then
	# If Tk was built as a framework, attempt to use the libraries
	# from the framework at the given location so that linking works
	# against Tk.framework installed in an arbitrary location.
	case ${TK_DEFS} in
	    *TK_FRAMEWORK*)
		if test -f "${TK_BIN_DIR}/${TK_LIB_FILE}"; then
		    for i in "`cd "${TK_BIN_DIR}"; pwd`" \
			     "`cd "${TK_BIN_DIR}"/../..; pwd`"; do
			if test "`basename "$i"`" = "${TK_LIB_FILE}.framework"; then
			    TK_LIB_SPEC="-F`dirname "$i" | sed -e 's/ /\\\\ /g'` -framework ${TK_LIB_FILE}"

#	no include files, so double-check its result just to be safe.
#
# Arguments:
#	none
#
# Results:
#
#	Sets the following vars:
#		XINCLUDES
#		XLIBSW
#
#--------------------------------------------------------------------

AC_DEFUN([SC_PATH_X], [
    AC_PATH_X

    (Tcl_SetVar)(interp, "tcl_rcFileName", "~/tclsh.rc", TCL_GLOBAL_ONLY);
#else
    (Tcl_SetVar)(interp, "tcl_rcFileName", "~/.tclshrc", TCL_GLOBAL_ONLY);
#endif

    return TCL_OK;
}









/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End: