Tcl Source Code

.AP "const char" *src in
For the \fBTcl_ExternalToUtf\fR functions, an array of bytes in the
specified encoding that are to be converted to UTF-8.  For the
\fBTcl_UtfToExternal\fR and \fBTcl_WinUtfToTChar\fR functions, an array of
UTF-8 characters to be converted to the specified encoding.
.AP "const TCHAR" *tsrc in
An array of Windows TCHAR characters to convert to UTF-8.
.AP int srcLen in
Length of \fIsrc\fR or \fItsrc\fR in bytes.  If the length is negative, the
encoding-specific length of the string is used.
.AP Tcl_DString *dstPtr out
Pointer to an uninitialized or free \fBTcl_DString\fR in which the converted
result will be stored.
.AP int flags in
Various flag bits OR-ed together.

.AP "const char" *src in
For the \fBTcl_ExternalToUtf\fR functions, an array of bytes in the
specified encoding that are to be converted to UTF-8.  For the
\fBTcl_UtfToExternal\fR and \fBTcl_WinUtfToTChar\fR functions, an array of
UTF-8 characters to be converted to the specified encoding.
.AP "const TCHAR" *tsrc in
An array of Windows TCHAR characters to convert to UTF-8.
.AP size_t srcLen in
Length of \fIsrc\fR or \fItsrc\fR in bytes.  If the length is negative, the
encoding-specific length of the string is used.
.AP Tcl_DString *dstPtr out
Pointer to an uninitialized or free \fBTcl_DString\fR in which the converted
result will be stored.
.AP int flags in
Various flag bits OR-ed together.

 */

int
Tcl_EvalEx(
    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
				 * script. Also used for error reporting. */
    const char *script,		/* First character of script to evaluate. */
    size_t numBytes,		/* Number of bytes in script. If (size_t)-1, the
				 * script consists of all bytes up to the
				 * first null character. */
    int flags)			/* Collection of OR-ed bits that control the
				 * evaluation of the script. Only
				 * TCL_EVAL_GLOBAL is currently supported. */
{
    return TclEvalEx(interp, script, numBytes, flags, 1, NULL, script);
................................................................................
}

int
TclEvalEx(
    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
				 * script. Also used for error reporting. */
    const char *script,		/* First character of script to evaluate. */
    size_t numBytes,		/* Number of bytes in script. If (size_t)-1, the
				 * script consists of all bytes up to the
				 * first NUL character. */
    int flags,			/* Collection of OR-ed bits that control the
				 * evaluation of the script. Only
				 * TCL_EVAL_GLOBAL is currently supported. */
    int line,			/* The line the script starts on. */
    int *clNextOuter,		/* Information about an outer context for */
................................................................................
	if (clNextOuter) {
	    clNext = clNextOuter;
	} else {
	    clNext = &iPtr->scriptCLLocPtr->loc[0];
	}
    }

    if (numBytes == (size_t)-1) {
	numBytes = strlen(script);
    }
    Tcl_ResetResult(interp);

    savedVarFramePtr = iPtr->varFramePtr;
    if (flags & TCL_EVAL_GLOBAL) {
	iPtr->varFramePtr = iPtr->rootFramePtr;

 */

int
Tcl_EvalEx(
    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
				 * script. Also used for error reporting. */
    const char *script,		/* First character of script to evaluate. */
    size_t numBytes,		/* Number of bytes in script. If -1, the
				 * script consists of all bytes up to the
				 * first null character. */
    int flags)			/* Collection of OR-ed bits that control the
				 * evaluation of the script. Only
				 * TCL_EVAL_GLOBAL is currently supported. */
{
    return TclEvalEx(interp, script, numBytes, flags, 1, NULL, script);
................................................................................
}

int
TclEvalEx(
    Tcl_Interp *interp,		/* Interpreter in which to evaluate the
				 * script. Also used for error reporting. */
    const char *script,		/* First character of script to evaluate. */
    size_t numBytes,		/* Number of bytes in script. If -1, the
				 * script consists of all bytes up to the
				 * first NUL character. */
    int flags,			/* Collection of OR-ed bits that control the
				 * evaluation of the script. Only
				 * TCL_EVAL_GLOBAL is currently supported. */
    int line,			/* The line the script starts on. */
    int *clNextOuter,		/* Information about an outer context for */
................................................................................
	if (clNextOuter) {
	    clNext = clNextOuter;
	} else {
	    clNext = &iPtr->scriptCLLocPtr->loc[0];
	}
    }

    if (numBytes == TCL_AUTO_LENGTH) {
	numBytes = strlen(script);
    }
    Tcl_ResetResult(interp);

    savedVarFramePtr = iPtr->varFramePtr;
    if (flags & TCL_EVAL_GLOBAL) {
	iPtr->varFramePtr = iPtr->rootFramePtr;

    length = byteArrayPtr->used;

    /*
     * How much space will string rep need?
     */

    size = length;
    for (i = 0; (i < length) && (size != (size_t)-1); i++) {
	if ((src[i] == 0) || (src[i] > 127)) {
	    size++;
	}
    }
    if (size == (size_t)-1) {
	Tcl_Panic("max size for a Tcl value exceeded");
    }

    dst = Tcl_Alloc(size + 1);
    objPtr->bytes = dst;
    objPtr->length = size;

................................................................................
{
    ByteArray *byteArrayPtr;
    size_t needed;

    if (Tcl_IsShared(objPtr)) {
	Tcl_Panic("%s called with shared object","TclAppendBytesToByteArray");
    }
    if (len == (size_t)-1) {
	Tcl_Panic("%s must be called with definite number of bytes to append",
		"TclAppendBytesToByteArray");
    }
    if (len == 0) {
	/* Append zero bytes is a no-op. */
	return;
    }

    length = byteArrayPtr->used;

    /*
     * How much space will string rep need?
     */

    size = length;
    for (i = 0; (i < length) && (size != TCL_AUTO_LENGTH); i++) {
	if ((src[i] == 0) || (src[i] > 127)) {
	    size++;
	}
    }
    if (size == TCL_AUTO_LENGTH) {
	Tcl_Panic("max size for a Tcl value exceeded");
    }

    dst = Tcl_Alloc(size + 1);
    objPtr->bytes = dst;
    objPtr->length = size;

................................................................................
{
    ByteArray *byteArrayPtr;
    size_t needed;

    if (Tcl_IsShared(objPtr)) {
	Tcl_Panic("%s called with shared object","TclAppendBytesToByteArray");
    }
    if (len == TCL_AUTO_LENGTH) {
	Tcl_Panic("%s must be called with definite number of bytes to append",
		"TclAppendBytesToByteArray");
    }
    if (len == 0) {
	/* Append zero bytes is a no-op. */
	return;
    }

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

int
Tcl_ParseExpr(
    Tcl_Interp *interp,		/* Used for error reporting. */
    const char *start,		/* Start of source string to parse. */
    size_t numBytes,		/* Number of bytes in string. If (size_t)-1, the
				 * string consists of all bytes up to the
				 * first null character. */
    Tcl_Parse *parsePtr)	/* Structure to fill with information about
				 * the parsed expression; any previous
				 * information in the structure is ignored. */
{
    int code;
    OpNode *opTree = NULL;	/* Will point to the tree of operators. */
    Tcl_Obj *litList = Tcl_NewObj();	/* List to hold the literals. */
    Tcl_Obj *funcList = Tcl_NewObj();	/* List to hold the functon names. */
    Tcl_Parse *exprParsePtr = TclStackAlloc(interp, sizeof(Tcl_Parse));
				/* Holds the Tcl_Tokens of substitutions. */

    if (numBytes == (size_t)-1) {
	numBytes = (start ? strlen(start) : 0);
    }

    code = ParseExpr(interp, start, numBytes, &opTree, litList, funcList,
	    exprParsePtr, 1 /* parseOnly */);
    Tcl_DecrRefCount(funcList);
    Tcl_DecrRefCount(litList);

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

int
Tcl_ParseExpr(
    Tcl_Interp *interp,		/* Used for error reporting. */
    const char *start,		/* Start of source string to parse. */
    size_t numBytes,		/* Number of bytes in string. If -1, the
				 * string consists of all bytes up to the
				 * first null character. */
    Tcl_Parse *parsePtr)	/* Structure to fill with information about
				 * the parsed expression; any previous
				 * information in the structure is ignored. */
{
    int code;
    OpNode *opTree = NULL;	/* Will point to the tree of operators. */
    Tcl_Obj *litList = Tcl_NewObj();	/* List to hold the literals. */
    Tcl_Obj *funcList = Tcl_NewObj();	/* List to hold the functon names. */
    Tcl_Parse *exprParsePtr = TclStackAlloc(interp, sizeof(Tcl_Parse));
				/* Holds the Tcl_Tokens of substitutions. */

    if (numBytes == TCL_AUTO_LENGTH) {
	numBytes = (start ? strlen(start) : 0);
    }

    code = ParseExpr(interp, start, numBytes, &opTree, litList, funcList,
	    exprParsePtr, 1 /* parseOnly */);
    Tcl_DecrRefCount(funcList);
    Tcl_DecrRefCount(litList);

void
TclCompileScript(
    Tcl_Interp *interp,		/* Used for error and status reporting. Also
				 * serves as context for finding and compiling
				 * commands. May not be NULL. */
    const char *script,		/* The source script to compile. */
    size_t numBytes,		/* Number of bytes in script. If (size_t)-1, the
				 * script consists of all bytes up to the
				 * first null character. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    int lastCmdIdx = -1;	/* Index into envPtr->cmdMapPtr of the last
				 * command this routine compiles into bytecode.
				 * Initial value of -1 indicates this routine

void
TclCompileScript(
    Tcl_Interp *interp,		/* Used for error and status reporting. Also
				 * serves as context for finding and compiling
				 * commands. May not be NULL. */
    const char *script,		/* The source script to compile. */
    size_t numBytes,		/* Number of bytes in script. If -1, the
				 * script consists of all bytes up to the
				 * first null character. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    int lastCmdIdx = -1;	/* Index into envPtr->cmdMapPtr of the last
				 * command this routine compiles into bytecode.
				 * Initial value of -1 indicates this routine

 */

char *
Tcl_ExternalToUtfDString(
    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
				 * for the default system encoding. */
    const char *src,		/* Source string in specified encoding. */
    size_t srcLen,		/* Source string length in bytes, or (size_t)-1 for
				 * encoding-specific string length. */
    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    char *dst;
    Tcl_EncodingState state;
    const Encoding *encodingPtr;
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == (size_t)-1) {
	srcLen = encodingPtr->lengthProc(src);
    }

    flags = TCL_ENCODING_START | TCL_ENCODING_END;

    while (1) {
	result = encodingPtr->toUtfProc(encodingPtr->clientData, src, srcLen,
................................................................................

int
Tcl_ExternalToUtf(
    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
				 * for the default system encoding. */
    const char *src,		/* Source string in specified encoding. */
    size_t srcLen,		/* Source string length in bytes, or (size_t)-1
				 * for encoding-specific string length. */
    int flags,			/* Conversion control flags. */
    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
				 * information used during a piecewise
				 * conversion. Contents of statePtr are
				 * initialized and/or reset by conversion
				 * routine under control of flags argument. */
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == (size_t)-1) {
	srcLen = encodingPtr->lengthProc(src);
    }
    if (statePtr == NULL) {
	flags |= TCL_ENCODING_START | TCL_ENCODING_END;
	statePtr = &state;
    }
    if (srcReadPtr == NULL) {
................................................................................
 */

char *
Tcl_UtfToExternalDString(
    Tcl_Encoding encoding,	/* The encoding for the converted string, or
				 * NULL for the default system encoding. */
    const char *src,		/* Source string in UTF-8. */
    size_t srcLen,		/* Source string length in bytes, or (size_t)-1 for
				 * strlen(). */
    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    char *dst;
    Tcl_EncodingState state;
    const Encoding *encodingPtr;
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == (size_t)-1) {
	srcLen = strlen(src);
    }
    flags = TCL_ENCODING_START | TCL_ENCODING_END;
    while (1) {
	result = encodingPtr->fromUtfProc(encodingPtr->clientData, src,
		srcLen, flags, &state, dst, dstLen, &srcRead, &dstWrote,
		&dstChars);
................................................................................

int
Tcl_UtfToExternal(
    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
    Tcl_Encoding encoding,	/* The encoding for the converted string, or
				 * NULL for the default system encoding. */
    const char *src,		/* Source string in UTF-8. */
    size_t srcLen,		/* Source string length in bytes, or (size_t)-1
				 * for strlen(). */
    int flags,			/* Conversion control flags. */
    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
				 * information used during a piecewise
				 * conversion. Contents of statePtr are
				 * initialized and/or reset by conversion
				 * routine under control of flags argument. */
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == (size_t)-1) {
	srcLen = strlen(src);
    }
    if (statePtr == NULL) {
	flags |= TCL_ENCODING_START | TCL_ENCODING_END;
	statePtr = &state;
    }
    if (srcReadPtr == NULL) {
................................................................................
    while (1) {
	int argc;
	const char **argv;
	char *line;
	Tcl_DString lineString;

	Tcl_DStringInit(&lineString);
	if (Tcl_Gets(chan, &lineString) == (size_t)-1) {
	    break;
	}
	line = Tcl_DStringValue(&lineString);
	if (Tcl_SplitList(NULL, line, &argc, &argv) != TCL_OK) {
	    Tcl_DStringFree(&lineString);
	    continue;
	}

 */

char *
Tcl_ExternalToUtfDString(
    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
				 * for the default system encoding. */
    const char *src,		/* Source string in specified encoding. */
    size_t srcLen,		/* Source string length in bytes, or -1 for
				 * encoding-specific string length. */
    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    char *dst;
    Tcl_EncodingState state;
    const Encoding *encodingPtr;
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == TCL_AUTO_LENGTH) {
	srcLen = encodingPtr->lengthProc(src);
    }

    flags = TCL_ENCODING_START | TCL_ENCODING_END;

    while (1) {
	result = encodingPtr->toUtfProc(encodingPtr->clientData, src, srcLen,
................................................................................

int
Tcl_ExternalToUtf(
    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
    Tcl_Encoding encoding,	/* The encoding for the source string, or NULL
				 * for the default system encoding. */
    const char *src,		/* Source string in specified encoding. */
    size_t srcLen,		/* Source string length in bytes, or -1
				 * for encoding-specific string length. */
    int flags,			/* Conversion control flags. */
    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
				 * information used during a piecewise
				 * conversion. Contents of statePtr are
				 * initialized and/or reset by conversion
				 * routine under control of flags argument. */
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == TCL_AUTO_LENGTH) {
	srcLen = encodingPtr->lengthProc(src);
    }
    if (statePtr == NULL) {
	flags |= TCL_ENCODING_START | TCL_ENCODING_END;
	statePtr = &state;
    }
    if (srcReadPtr == NULL) {
................................................................................
 */

char *
Tcl_UtfToExternalDString(
    Tcl_Encoding encoding,	/* The encoding for the converted string, or
				 * NULL for the default system encoding. */
    const char *src,		/* Source string in UTF-8. */
    size_t srcLen,		/* Source string length in bytes, or -1 for
				 * strlen(). */
    Tcl_DString *dstPtr)	/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    char *dst;
    Tcl_EncodingState state;
    const Encoding *encodingPtr;
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == TCL_AUTO_LENGTH) {
	srcLen = strlen(src);
    }
    flags = TCL_ENCODING_START | TCL_ENCODING_END;
    while (1) {
	result = encodingPtr->fromUtfProc(encodingPtr->clientData, src,
		srcLen, flags, &state, dst, dstLen, &srcRead, &dstWrote,
		&dstChars);
................................................................................

int
Tcl_UtfToExternal(
    Tcl_Interp *interp,		/* Interp for error return, if not NULL. */
    Tcl_Encoding encoding,	/* The encoding for the converted string, or
				 * NULL for the default system encoding. */
    const char *src,		/* Source string in UTF-8. */
    size_t srcLen,		/* Source string length in bytes, or -1
				 * for strlen(). */
    int flags,			/* Conversion control flags. */
    Tcl_EncodingState *statePtr,/* Place for conversion routine to store state
				 * information used during a piecewise
				 * conversion. Contents of statePtr are
				 * initialized and/or reset by conversion
				 * routine under control of flags argument. */
................................................................................
    if (encoding == NULL) {
	encoding = systemEncoding;
    }
    encodingPtr = (Encoding *) encoding;

    if (src == NULL) {
	srcLen = 0;
    } else if (srcLen == TCL_AUTO_LENGTH) {
	srcLen = strlen(src);
    }
    if (statePtr == NULL) {
	flags |= TCL_ENCODING_START | TCL_ENCODING_END;
	statePtr = &state;
    }
    if (srcReadPtr == NULL) {
................................................................................
    while (1) {
	int argc;
	const char **argv;
	char *line;
	Tcl_DString lineString;

	Tcl_DStringInit(&lineString);
	if (Tcl_Gets(chan, &lineString) == TCL_IO_FAILURE) {
	    break;
	}
	line = Tcl_DStringValue(&lineString);
	if (Tcl_SplitList(NULL, line, &argc, &argv) != TCL_OK) {
	    Tcl_DStringFree(&lineString);
	    continue;
	}

     * exist, enlarge the array if necessary to make room. If the name exists,
     * free its old entry.
     */

    Tcl_MutexLock(&envMutex);
    index = TclpFindVariable(name, &length);

    if (index == (size_t)-1) {
#ifndef USE_PUTENV
	/*
	 * We need to handle the case where the environment may be changed
	 * outside our control. ourEnvironSize is only valid if the current
	 * environment is the one we allocated. [Bug 979640]
	 */

................................................................................

    /*
     * Watch out for versions of putenv that copy the string (e.g. VC++). In
     * this case we need to free the string immediately. Otherwise update the
     * string in the cache.
     */

    if ((index != (size_t)-1) && (environ[index] == p)) {
	ReplaceString(oldValue, p);
#ifdef HAVE_PUTENV_THAT_COPIES
    } else {
	/*
	 * This putenv() copies instead of taking ownership.
	 */

................................................................................
    index = TclpFindVariable(name, &length);

    /*
     * First make sure that the environment variable exists to avoid doing
     * needless work and to avoid recursion on the unset.
     */

    if (index == (size_t)-1) {
	Tcl_MutexUnlock(&envMutex);
	return;
    }

    /*
     * Remember the old value so we can free it if Tcl created the string.
     */
................................................................................
{
    size_t length, index;
    const char *result;

    Tcl_MutexLock(&envMutex);
    index = TclpFindVariable(name, &length);
    result = NULL;
    if (index != (size_t)-1) {
	Tcl_DString envStr;

	result = Tcl_ExternalToUtfDString(NULL, environ[index], -1, &envStr);
	result += length;
	if (*result == '=') {
	    result++;
	    Tcl_DStringInit(valuePtr);

     * exist, enlarge the array if necessary to make room. If the name exists,
     * free its old entry.
     */

    Tcl_MutexLock(&envMutex);
    index = TclpFindVariable(name, &length);

    if (index == TCL_AUTO_LENGTH) {
#ifndef USE_PUTENV
	/*
	 * We need to handle the case where the environment may be changed
	 * outside our control. ourEnvironSize is only valid if the current
	 * environment is the one we allocated. [Bug 979640]
	 */

................................................................................

    /*
     * Watch out for versions of putenv that copy the string (e.g. VC++). In
     * this case we need to free the string immediately. Otherwise update the
     * string in the cache.
     */

    if ((index != TCL_AUTO_LENGTH) && (environ[index] == p)) {
	ReplaceString(oldValue, p);
#ifdef HAVE_PUTENV_THAT_COPIES
    } else {
	/*
	 * This putenv() copies instead of taking ownership.
	 */

................................................................................
    index = TclpFindVariable(name, &length);

    /*
     * First make sure that the environment variable exists to avoid doing
     * needless work and to avoid recursion on the unset.
     */

    if (index == TCL_AUTO_LENGTH) {
	Tcl_MutexUnlock(&envMutex);
	return;
    }

    /*
     * Remember the old value so we can free it if Tcl created the string.
     */
................................................................................
{
    size_t length, index;
    const char *result;

    Tcl_MutexLock(&envMutex);
    index = TclpFindVariable(name, &length);
    result = NULL;
    if (index != TCL_AUTO_LENGTH) {
	Tcl_DString envStr;

	result = Tcl_ExternalToUtfDString(NULL, environ[index], -1, &envStr);
	result += length;
	if (*result == '=') {
	    result++;
	    Tcl_DStringInit(valuePtr);

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

size_t
Tcl_Write(
    Tcl_Channel chan,		/* The channel to buffer output for. */
    const char *src,		/* Data to queue in output buffer. */
    size_t srcLen)			/* Length of data in bytes, or (size_t)-1 for
				 * strlen(). */
{
    /*
     * Always use the topmost channel of the stack
     */

    Channel *chanPtr;
    ChannelState *statePtr;	/* State info for channel */

    statePtr = ((Channel *) chan)->state;
    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return -1;
    }

    if (srcLen == (size_t)-1) {
	srcLen = strlen(src);
    }
    if (WriteBytes(chanPtr, src, srcLen) == -1) {
	return -1;
    }
    return srcLen;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
{
    Channel *chanPtr = (Channel *) chan;
    ChannelState *statePtr = chanPtr->state;	/* State info for channel */
    int result;
    Tcl_Obj *objPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return (size_t)-1;
    }

    chanPtr = statePtr->topChanPtr;

    if (len == (size_t)-1) {
	len = strlen(src);
    }
    if (statePtr->encoding) {
	return WriteChars(chanPtr, src, len);
    }

    /*
................................................................................
    const char *src;
    size_t srcLen;

    statePtr = ((Channel *) chan)->state;
    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return (size_t)-1;
    }
    if (statePtr->encoding == NULL) {
	src = (char *) TclGetByteArrayFromObj(objPtr, &srcLen);
	return WriteBytes(chanPtr, src, srcLen);
    } else {
	src = TclGetStringFromObj(objPtr, &srcLen);
	return WriteChars(chanPtr, src, srcLen);
................................................................................
    ChannelBuffer *bufPtr;
    int inEofChar, skip, copiedTotal, oldLength, oldFlags, oldRemoved;
    Tcl_Encoding encoding;
    char *dst, *dstEnd, *eol, *eof;
    Tcl_EncodingState oldState;

    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
	return (size_t)-1;
    }

    /*
     * If we're sitting ready to read the eofchar, there's no need to
     * do it.
     */

................................................................................
    if (GotFlag(statePtr, CHANNEL_STICKY_EOF)) {
	SetFlag(statePtr, CHANNEL_EOF);
	assert(statePtr->inputEncodingFlags & TCL_ENCODING_END);
	assert(!GotFlag(statePtr, CHANNEL_BLOCKED|INPUT_SAW_CR));

	/* TODO: Do we need this? */
	UpdateInterest(chanPtr);
	return (size_t)-1;
    }

    /*
     * A binary version of Tcl_GetsObj. This could also handle encodings that
     * are ascii-7 pure (iso8859, utf-8, ...) with a final encoding conversion
     * done on objPtr.
     */
................................................................................
    /*
     * This operation should occur at the top of a channel stack.
     */

    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
	return (size_t)-1;
    }

    return DoRead(chanPtr, dst, bytesToRead, 0);
}
 
/*
 *----------------------------------------------------------------------
................................................................................
    Channel *chanPtr = (Channel *) chan;
    ChannelState *statePtr = chanPtr->state;
				/* State info for channel */
    int copied = 0;

    assert(bytesToRead > 0);
    if (CheckChannelErrors(statePtr, TCL_READABLE | CHANNEL_RAW_MODE) != 0) {
	return (size_t)-1;
    }

    /*
     * First read bytes from the push-back buffers.
     */

    while (chanPtr->inQueueHead && bytesToRead > 0) {
................................................................................
 */

size_t
Tcl_ReadChars(
    Tcl_Channel chan,		/* The channel to read. */
    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
    size_t toRead,		/* Maximum number of characters to store, or
				 * (size_t)-1 to read all available data (up to EOF or
				 * when channel blocks). */
    int appendFlag)		/* If non-zero, data read from the channel
				 * will be appended to the object. Otherwise,
				 * the data will replace the existing contents
				 * of the object. */
{
    Channel *chanPtr = (Channel *) chan;
................................................................................
 */

static int
DoReadChars(
    Channel *chanPtr,		/* The channel to read. */
    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
    size_t toRead,			/* Maximum number of characters to store, or
				 * (size_t)-1 to read all available data (up to EOF or
				 * when channel blocks). */
    int appendFlag)		/* If non-zero, data read from the channel
				 * will be appended to the object. Otherwise,
				 * the data will replace the existing contents
				 * of the object. */
{
    ChannelState *statePtr = chanPtr->state;

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

size_t
Tcl_Write(
    Tcl_Channel chan,		/* The channel to buffer output for. */
    const char *src,		/* Data to queue in output buffer. */
    size_t srcLen)			/* Length of data in bytes, or -1 for
				 * strlen(). */
{
    /*
     * Always use the topmost channel of the stack
     */

    Channel *chanPtr;
    ChannelState *statePtr;	/* State info for channel */

    statePtr = ((Channel *) chan)->state;
    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return TCL_IO_FAILURE;
    }

    if (srcLen == TCL_AUTO_LENGTH) {
	srcLen = strlen(src);
    }
    if (WriteBytes(chanPtr, src, srcLen) == -1) {
	return TCL_IO_FAILURE;
    }
    return srcLen;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
{
    Channel *chanPtr = (Channel *) chan;
    ChannelState *statePtr = chanPtr->state;	/* State info for channel */
    int result;
    Tcl_Obj *objPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return TCL_IO_FAILURE;
    }

    chanPtr = statePtr->topChanPtr;

    if (len == TCL_AUTO_LENGTH) {
	len = strlen(src);
    }
    if (statePtr->encoding) {
	return WriteChars(chanPtr, src, len);
    }

    /*
................................................................................
    const char *src;
    size_t srcLen;

    statePtr = ((Channel *) chan)->state;
    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_WRITABLE) != 0) {
	return TCL_IO_FAILURE;
    }
    if (statePtr->encoding == NULL) {
	src = (char *) TclGetByteArrayFromObj(objPtr, &srcLen);
	return WriteBytes(chanPtr, src, srcLen);
    } else {
	src = TclGetStringFromObj(objPtr, &srcLen);
	return WriteChars(chanPtr, src, srcLen);
................................................................................
    ChannelBuffer *bufPtr;
    int inEofChar, skip, copiedTotal, oldLength, oldFlags, oldRemoved;
    Tcl_Encoding encoding;
    char *dst, *dstEnd, *eol, *eof;
    Tcl_EncodingState oldState;

    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
	return TCL_IO_FAILURE;
    }

    /*
     * If we're sitting ready to read the eofchar, there's no need to
     * do it.
     */

................................................................................
    if (GotFlag(statePtr, CHANNEL_STICKY_EOF)) {
	SetFlag(statePtr, CHANNEL_EOF);
	assert(statePtr->inputEncodingFlags & TCL_ENCODING_END);
	assert(!GotFlag(statePtr, CHANNEL_BLOCKED|INPUT_SAW_CR));

	/* TODO: Do we need this? */
	UpdateInterest(chanPtr);
	return TCL_IO_FAILURE;
    }

    /*
     * A binary version of Tcl_GetsObj. This could also handle encodings that
     * are ascii-7 pure (iso8859, utf-8, ...) with a final encoding conversion
     * done on objPtr.
     */
................................................................................
    /*
     * This operation should occur at the top of a channel stack.
     */

    chanPtr = statePtr->topChanPtr;

    if (CheckChannelErrors(statePtr, TCL_READABLE) != 0) {
	return TCL_IO_FAILURE;
    }

    return DoRead(chanPtr, dst, bytesToRead, 0);
}
 
/*
 *----------------------------------------------------------------------
................................................................................
    Channel *chanPtr = (Channel *) chan;
    ChannelState *statePtr = chanPtr->state;
				/* State info for channel */
    int copied = 0;

    assert(bytesToRead > 0);
    if (CheckChannelErrors(statePtr, TCL_READABLE | CHANNEL_RAW_MODE) != 0) {
	return TCL_IO_FAILURE;
    }

    /*
     * First read bytes from the push-back buffers.
     */

    while (chanPtr->inQueueHead && bytesToRead > 0) {
................................................................................
 */

size_t
Tcl_ReadChars(
    Tcl_Channel chan,		/* The channel to read. */
    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
    size_t toRead,		/* Maximum number of characters to store, or
				 * -1 to read all available data (up to EOF or
				 * when channel blocks). */
    int appendFlag)		/* If non-zero, data read from the channel
				 * will be appended to the object. Otherwise,
				 * the data will replace the existing contents
				 * of the object. */
{
    Channel *chanPtr = (Channel *) chan;
................................................................................
 */

static int
DoReadChars(
    Channel *chanPtr,		/* The channel to read. */
    Tcl_Obj *objPtr,		/* Input data is stored in this object. */
    size_t toRead,			/* Maximum number of characters to store, or
				 * -1 to read all available data (up to EOF or
				 * when channel blocks). */
    int appendFlag)		/* If non-zero, data read from the channel
				 * will be appended to the object. Otherwise,
				 * the data will replace the existing contents
				 * of the object. */
{
    ChannelState *statePtr = chanPtr->state;

    (objPtr)->length   = 0; \
    (objPtr)->typePtr  = NULL; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

/*
 * Invalidate the string rep first so we can use the bytes value for our
 * pointer chain, and signal an obj deletion (as opposed to shimmering) with
 * 'length == (size_t)-1'.
 * Use empty 'if ; else' to handle use in unbraced outer if/else conditions.
 */

# define TclDecrRefCount(objPtr) \
    if ((objPtr)->refCount-- > 1) ; else { \
	if (!(objPtr)->typePtr || !(objPtr)->typePtr->freeIntRepProc) { \
	    TCL_DTRACE_OBJ_FREE(objPtr); \
	    if ((objPtr)->bytes \
		    && ((objPtr)->bytes != &tclEmptyString)) { \
		Tcl_Free((objPtr)->bytes); \
	    } \
	    (objPtr)->length = (size_t)-1; \
	    TclFreeObjStorage(objPtr); \
	    TclIncrObjsFreed(); \
	} else { \
	    TclFreeObj(objPtr); \
	} \
    }

    (objPtr)->length   = 0; \
    (objPtr)->typePtr  = NULL; \
    TCL_DTRACE_OBJ_CREATE(objPtr)

/*
 * Invalidate the string rep first so we can use the bytes value for our
 * pointer chain, and signal an obj deletion (as opposed to shimmering) with
 * 'length == TCL_AUTO_LENGTH'.
 * Use empty 'if ; else' to handle use in unbraced outer if/else conditions.
 */

# define TclDecrRefCount(objPtr) \
    if ((objPtr)->refCount-- > 1) ; else { \
	if (!(objPtr)->typePtr || !(objPtr)->typePtr->freeIntRepProc) { \
	    TCL_DTRACE_OBJ_FREE(objPtr); \
	    if ((objPtr)->bytes \
		    && ((objPtr)->bytes != &tclEmptyString)) { \
		Tcl_Free((objPtr)->bytes); \
	    } \
	    (objPtr)->length = TCL_AUTO_LENGTH; \
	    TclFreeObjStorage(objPtr); \
	    TclIncrObjsFreed(); \
	} else { \
	    TclFreeObj(objPtr); \
	} \
    }

char *
Tcl_WinUtfToTChar(
    const char *string,
    size_t len,
    Tcl_DString *dsPtr)
{
    Tcl_DStringInit(dsPtr);



    return (char *)Tcl_UtfToUniCharDString(string, len, dsPtr);
}

char *
Tcl_WinTCharToUtf(
    const char *string,
    size_t len,
    Tcl_DString *dsPtr)
{




    if (len != (size_t)-1) {
	len /= 2;
    } else if (len == -1) {
	len = wcslen((wchar_t *)string);
    }
    Tcl_DStringInit(dsPtr);
    return Tcl_UniCharToUtfDString((Tcl_UniChar *)string, len, dsPtr);
}

#if defined(TCL_WIDE_INT_IS_LONG)

char *
Tcl_WinUtfToTChar(
    const char *string,
    size_t len,
    Tcl_DString *dsPtr)
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }
    return (char *)Tcl_UtfToUniCharDString(string, len, dsPtr);
}

char *
Tcl_WinTCharToUtf(
    const char *string,
    size_t len,
    Tcl_DString *dsPtr)
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }
    if (len != TCL_AUTO_LENGTH) {
	len /= 2;
    } else {
	len = wcslen((wchar_t *)string);
    }
    Tcl_DStringInit(dsPtr);
    return Tcl_UniCharToUtfDString((Tcl_UniChar *)string, len, dsPtr);
}

#if defined(TCL_WIDE_INT_IS_LONG)

				 * appended to this previously initialized
				 * DString. */
{
    Tcl_UniChar ch = 0, *w, *wString;
    const char *p, *end;
    size_t oldLength;

    if (length == (size_t)-1) {
	length = strlen(src);
    }

    /*
     * Unicode string length in Tcl_UniChars will be <= UTF-8 string length in
     * bytes.
     */
................................................................................
    /*
     * The separate implementations are faster.
     *
     * Since this is a time-sensitive function, we also do the check for the
     * single-byte char case specially.
     */

    if (length == (size_t)-1) {
	while (*src != '\0') {
	    src += TclUtfToUniChar(src, &ch);
	    i++;
	}
    } else {
	register const char *endPtr = src + length - 4;

................................................................................
    register size_t index)		/* The position of the desired character. */
{
    Tcl_UniChar ch = 0;
#if TCL_UTF_MAX <= 4
    int len = 1;
#endif

    if (index != (size_t)-1) {
	while (index--) {
#if TCL_UTF_MAX <= 4
	    src += (len = TclUtfToUniChar(src, &ch));
#else
	    src += TclUtfToUniChar(src, &ch);
#endif
	}

				 * appended to this previously initialized
				 * DString. */
{
    Tcl_UniChar ch = 0, *w, *wString;
    const char *p, *end;
    size_t oldLength;

    if (length == TCL_AUTO_LENGTH) {
	length = strlen(src);
    }

    /*
     * Unicode string length in Tcl_UniChars will be <= UTF-8 string length in
     * bytes.
     */
................................................................................
    /*
     * The separate implementations are faster.
     *
     * Since this is a time-sensitive function, we also do the check for the
     * single-byte char case specially.
     */

    if (length == TCL_AUTO_LENGTH) {
	while (*src != '\0') {
	    src += TclUtfToUniChar(src, &ch);
	    i++;
	}
    } else {
	register const char *endPtr = src + length - 4;

................................................................................
    register size_t index)		/* The position of the desired character. */
{
    Tcl_UniChar ch = 0;
#if TCL_UTF_MAX <= 4
    int len = 1;
#endif

    if (index != TCL_AUTO_LENGTH) {
	while (index--) {
#if TCL_UTF_MAX <= 4
	    src += (len = TclUtfToUniChar(src, &ch));
#else
	    src += TclUtfToUniChar(src, &ch);
#endif
	}

TclMaxListLength(
    const char *bytes,
    size_t numBytes,
    const char **endPtr)
{
    size_t count = 0;

    if ((numBytes == 0) || ((numBytes == (size_t)-1) && (*bytes == '\0'))) {
	/* Empty string case - quick exit */
	goto done;
    }

    /*
     * No list element before leading white space.
     */
................................................................................
    count += 1 - TclIsSpaceProc(*bytes);

    /*
     * Count white space runs as potential element separators.
     */

    while (numBytes) {
	if ((numBytes == (size_t)-1) && (*bytes == '\0')) {
	    break;
	}
	if (TclIsSpaceProc(*bytes)) {
	    /*
	     * Space run started; bump count.
	     */

	    count++;
	    do {
		bytes++;
		numBytes -= (numBytes != (size_t)-1);
	    } while (numBytes && TclIsSpaceProc(*bytes));
	    if ((numBytes == 0) || ((numBytes == (size_t)-1) && (*bytes == '\0'))) {
		break;
	    }

	    /*
	     * (*bytes) is non-space; return to counting state.
	     */
	}
	bytes++;
	numBytes -= (numBytes != (size_t)-1);
    }

    /*
     * No list element following trailing white space.
     */

    count -= TclIsSpaceProc(bytes[-1]);
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
TclScanElement(
    const char *src,		/* String to convert to Tcl list element. */
    size_t length,		/* Number of bytes in src, or (size_t)-1. */
    char *flagPtr)		/* Where to store information to guide
				 * Tcl_ConvertElement. */
{
    const char *p = src;
    int nestingLevel = 0;	/* Brace nesting count */
    int forbidNone = 0;		/* Do not permit CONVERT_NONE mode. Something
				 * needs protection or escape. */
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
Tcl_ConvertCountedElement(
    register const char *src,	/* Source information for list element. */
    size_t length,		/* Number of bytes in src, or (size_t)-1. */
    char *dst,			/* Place to put list-ified element. */
    int flags)			/* Flags produced by Tcl_ScanElement. */
{
    size_t numBytes = TclConvertElement(src, length, dst, flags);
    dst[numBytes] = '\0';
    return numBytes;
}
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
TclConvertElement(
    register const char *src,	/* Source information for list element. */
    size_t length,		/* Number of bytes in src, or (size_t)-1. */
    char *dst,			/* Place to put list-ified element. */
    int flags)			/* Flags produced by Tcl_ScanElement. */
{
    int conversion = flags & CONVERT_MASK;
    char *p = dst;

    /*
................................................................................
	conversion = CONVERT_ESCAPE;
    }

    /*
     * No matter what the caller demands, empty string must be braced!
     */

    if ((src == NULL) || (length == 0) || (*src == '\0' && length == (size_t)-1)) {
	src = &tclEmptyString;
	length = 0;
	conversion = CONVERT_BRACE;
    }

    /*
     * Escape leading hash as needed and requested.
................................................................................

char *
Tcl_DStringAppend(
    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
    const char *bytes,		/* String to append. If length is -1 then this
				 * must be null-terminated. */
    size_t length)			/* Number of bytes from "bytes" to append. If
				 * (size_t)-1, then append all of bytes, up to null
				 * at end. */
{
    size_t newSize;

    if (length == (size_t)-1) {
	length = strlen(bytes);
    }
    newSize = length + dsPtr->length;

    /*
     * Allocate a larger buffer for the string if the current one isn't large
     * enough. Allocate extra space in the new buffer so that there will be
................................................................................
	dsPtr->spaceAvl = newSize * 2;
	if (dsPtr->string == dsPtr->staticSpace) {
	    char *newString = Tcl_Alloc(dsPtr->spaceAvl);

	    memcpy(newString, dsPtr->string, dsPtr->length);
	    dsPtr->string = newString;
	} else {
	    size_t offset = (size_t)-1;

	    /* See [16896d49fd] */
	    if (bytes >= dsPtr->string
		    && bytes <= dsPtr->string + dsPtr->length) {
		offset = bytes - dsPtr->string;
	    }

	    dsPtr->string = Tcl_Realloc(dsPtr->string, dsPtr->spaceAvl);

	    if (offset != (size_t)-1) {
		bytes = dsPtr->string + offset;
	    }
	}
    }

    /*
     * Copy the new string into the buffer at the end of the old one.

TclMaxListLength(
    const char *bytes,
    size_t numBytes,
    const char **endPtr)
{
    size_t count = 0;

    if ((numBytes == 0) || ((numBytes == TCL_AUTO_LENGTH) && (*bytes == '\0'))) {
	/* Empty string case - quick exit */
	goto done;
    }

    /*
     * No list element before leading white space.
     */
................................................................................
    count += 1 - TclIsSpaceProc(*bytes);

    /*
     * Count white space runs as potential element separators.
     */

    while (numBytes) {
	if ((numBytes == TCL_AUTO_LENGTH) && (*bytes == '\0')) {
	    break;
	}
	if (TclIsSpaceProc(*bytes)) {
	    /*
	     * Space run started; bump count.
	     */

	    count++;
	    do {
		bytes++;
		numBytes -= (numBytes != TCL_AUTO_LENGTH);
	    } while (numBytes && TclIsSpaceProc(*bytes));
	    if ((numBytes == 0) || ((numBytes == TCL_AUTO_LENGTH) && (*bytes == '\0'))) {
		break;
	    }

	    /*
	     * (*bytes) is non-space; return to counting state.
	     */
	}
	bytes++;
	numBytes -= (numBytes != TCL_AUTO_LENGTH);
    }

    /*
     * No list element following trailing white space.
     */

    count -= TclIsSpaceProc(bytes[-1]);
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
TclScanElement(
    const char *src,		/* String to convert to Tcl list element. */
    size_t length,		/* Number of bytes in src, or -1. */
    char *flagPtr)		/* Where to store information to guide
				 * Tcl_ConvertElement. */
{
    const char *p = src;
    int nestingLevel = 0;	/* Brace nesting count */
    int forbidNone = 0;		/* Do not permit CONVERT_NONE mode. Something
				 * needs protection or escape. */
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
Tcl_ConvertCountedElement(
    register const char *src,	/* Source information for list element. */
    size_t length,		/* Number of bytes in src, or -1. */
    char *dst,			/* Place to put list-ified element. */
    int flags)			/* Flags produced by Tcl_ScanElement. */
{
    size_t numBytes = TclConvertElement(src, length, dst, flags);
    dst[numBytes] = '\0';
    return numBytes;
}
................................................................................
 *
 *----------------------------------------------------------------------
 */

size_t
TclConvertElement(
    register const char *src,	/* Source information for list element. */
    size_t length,		/* Number of bytes in src, or -1. */
    char *dst,			/* Place to put list-ified element. */
    int flags)			/* Flags produced by Tcl_ScanElement. */
{
    int conversion = flags & CONVERT_MASK;
    char *p = dst;

    /*
................................................................................
	conversion = CONVERT_ESCAPE;
    }

    /*
     * No matter what the caller demands, empty string must be braced!
     */

    if ((src == NULL) || (length == 0) || (*src == '\0' && length == TCL_AUTO_LENGTH)) {
	src = &tclEmptyString;
	length = 0;
	conversion = CONVERT_BRACE;
    }

    /*
     * Escape leading hash as needed and requested.
................................................................................

char *
Tcl_DStringAppend(
    Tcl_DString *dsPtr,		/* Structure describing dynamic string. */
    const char *bytes,		/* String to append. If length is -1 then this
				 * must be null-terminated. */
    size_t length)			/* Number of bytes from "bytes" to append. If
				 * -1, then append all of bytes, up to null
				 * at end. */
{
    size_t newSize;

    if (length == TCL_AUTO_LENGTH) {
	length = strlen(bytes);
    }
    newSize = length + dsPtr->length;

    /*
     * Allocate a larger buffer for the string if the current one isn't large
     * enough. Allocate extra space in the new buffer so that there will be
................................................................................
	dsPtr->spaceAvl = newSize * 2;
	if (dsPtr->string == dsPtr->staticSpace) {
	    char *newString = Tcl_Alloc(dsPtr->spaceAvl);

	    memcpy(newString, dsPtr->string, dsPtr->length);
	    dsPtr->string = newString;
	} else {
	    size_t offset = TCL_AUTO_LENGTH;

	    /* See [16896d49fd] */
	    if (bytes >= dsPtr->string
		    && bytes <= dsPtr->string + dsPtr->length) {
		offset = bytes - dsPtr->string;
	    }

	    dsPtr->string = Tcl_Realloc(dsPtr->string, dsPtr->spaceAvl);

	    if (offset != TCL_AUTO_LENGTH) {
		bytes = dsPtr->string + offset;
	    }
	}
    }

    /*
     * Copy the new string into the buffer at the end of the old one.

    if (zshPtr->streamEnd) {
	return TCL_OK;
    }

    (void) TclGetByteArrayFromObj(data, &existing);

    if (zshPtr->mode == TCL_ZLIB_STREAM_INFLATE) {
	if (count == (size_t)-1) {
	    /*
	     * The only safe thing to do is restict to 65k. We might cause a
	     * panic for out of memory if we just kept growing the buffer.
	     */

	    count = MAX_BUFFER_SIZE;
	}
................................................................................
		Tcl_DecrRefCount(zshPtr->currentInput);
		zshPtr->currentInput = 0;
	    }
	    inflateEnd(&zshPtr->stream);
	}
    } else {
	Tcl_ListObjLength(NULL, zshPtr->outData, &listLen);
	if (count == (size_t)-1) {
	    count = 0;
	    for (i=0; i<listLen; i++) {
		Tcl_ListObjIndex(NULL, zshPtr->outData, i, &itemObj);
		itemPtr = TclGetByteArrayFromObj(itemObj, &itemLen);
		if (i == 0) {
		    count += itemLen - zshPtr->outPos;
		} else {

    if (zshPtr->streamEnd) {
	return TCL_OK;
    }

    (void) TclGetByteArrayFromObj(data, &existing);

    if (zshPtr->mode == TCL_ZLIB_STREAM_INFLATE) {
	if (count == TCL_AUTO_LENGTH) {
	    /*
	     * The only safe thing to do is restict to 65k. We might cause a
	     * panic for out of memory if we just kept growing the buffer.
	     */

	    count = MAX_BUFFER_SIZE;
	}
................................................................................
		Tcl_DecrRefCount(zshPtr->currentInput);
		zshPtr->currentInput = 0;
	    }
	    inflateEnd(&zshPtr->stream);
	}
    } else {
	Tcl_ListObjLength(NULL, zshPtr->outData, &listLen);
	if (count == TCL_AUTO_LENGTH) {
	    count = 0;
	    for (i=0; i<listLen; i++) {
		Tcl_ListObjIndex(NULL, zshPtr->outData, i, &itemObj);
		itemPtr = TclGetByteArrayFromObj(itemObj, &itemLen);
		if (i == 0) {
		    count += itemLen - zshPtr->outPos;
		} else {

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

TCHAR *
Tcl_WinUtfToTChar(
    const char *string,		/* Source string in UTF-8. */
    size_t len,			/* Source string length in bytes, or (size_t)-1
				 * for strlen(). */
    Tcl_DString *dsPtr)		/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return (TCHAR *)Tcl_DStringValue(dsPtr);
    }
    return Tcl_UtfToUniCharDString(string, len, dsPtr);
}

char *
Tcl_WinTCharToUtf(
    const TCHAR *string,	/* Source string in Unicode. */
    size_t len,			/* Source string length in bytes, or (size_t)-1
				 * for platform-specific string length. */
    Tcl_DString *dsPtr)		/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return Tcl_DStringValue(dsPtr);
    }
    if (len != (size_t)-1) {
	len /= 2;
    } else if (len < 0) {
	len = wcslen(string);
    }
    return Tcl_UniCharToUtfDString(string, len, dsPtr);
}
 
/*
 *------------------------------------------------------------------------

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

TCHAR *
Tcl_WinUtfToTChar(
    const char *string,		/* Source string in UTF-8. */
    size_t len,			/* Source string length in bytes, or -1
				 * for strlen(). */
    Tcl_DString *dsPtr)		/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }
    return Tcl_UtfToUniCharDString(string, len, dsPtr);
}

char *
Tcl_WinTCharToUtf(
    const TCHAR *string,	/* Source string in Unicode. */
    size_t len,			/* Source string length in bytes, or -1
				 * for platform-specific string length. */
    Tcl_DString *dsPtr)		/* Uninitialized or free DString in which the
				 * converted string is stored. */
{
    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }
    if (len != TCL_AUTO_LENGTH) {
	len /= 2;
    } else {
	len = wcslen(string);
    }
    return Tcl_UniCharToUtfDString(string, len, dsPtr);
}
 
/*
 *------------------------------------------------------------------------

 *
 *	Given a HANDLE to a child process, return the process id for that
 *	child process.
 *
 * Results:
 *	Returns the process id for the child process. If the pid was not known
 *	by Tcl, either because the pid was not created by Tcl or the child
 *	process has already been reaped, -1 is returned.
 *
 * Side effects:
 *	None.
 *
 *--------------------------------------------------------------------------
 */

 *
 *	Given a HANDLE to a child process, return the process id for that
 *	child process.
 *
 * Results:
 *	Returns the process id for the child process. If the pid was not known
 *	by Tcl, either because the pid was not created by Tcl or the child
 *	process has already been reaped, (size_t)-1 is returned.
 *
 * Side effects:
 *	None.
 *
 *--------------------------------------------------------------------------
 */