Tcl Source Code

    const chr *stop;		/* end of string */
    const chr *savenow;		/* saved now and stop for "subroutine call" */
    const chr *savestop;
    int err;			/* error code (0 if none) */
    int cflags;			/* copy of compile flags */
    int lasttype;		/* type of previous token */
    int nexttype;		/* type of next token */
    int nextvalue;		/* value (if any) of next token */
    int lexcon;			/* lexical context type (see lex.c) */
    int nsubexp;		/* subexpression count */
    struct subre **subs;	/* subRE pointer vector */
    int nsubs;			/* length of vector */
    struct subre *sub10[10];	/* initial vector, enough for most */
    struct nfa *nfa;		/* the NFA */
    struct colormap *cm;	/* character color map */

			    const char *trim, int numTrim);
MODULE_SCOPE int	TclTrimRight(const char *bytes, int numBytes,
			    const char *trim, int numTrim);
MODULE_SCOPE const char*TclGetCommandTypeName(Tcl_Command command);
MODULE_SCOPE void	TclRegisterCommandTypeName(
			    Tcl_ObjCmdProc *implementationProc,
			    const char *nameStr);
#if (TCL_UTF_MAX > 4) && (defined(__CYGWIN__) || defined(_WIN32))
MODULE_SCOPE int TclUtfToWChar(const char *src, WCHAR *chPtr);
MODULE_SCOPE char *	TclWCharToUtfDString(const WCHAR *uniStr,
			    int uniLength, Tcl_DString *dsPtr);
MODULE_SCOPE WCHAR * TclUtfToWCharDString(const char *src,
			    int length, Tcl_DString *dsPtr);
#else
#   define TclUtfToWChar TclUtfToUniChar
#   define TclWCharToUtfDString Tcl_UniCharToUtfDString
#   define TclUtfToWCharDString Tcl_UtfToUniCharDString
#endif
MODULE_SCOPE int	TclUtfCmp(const char *cs, const char *ct);
MODULE_SCOPE int	TclUtfCasecmp(const char *cs, const char *ct);
MODULE_SCOPE int	TclUtfCount(int ch);
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,

char *
Tcl_WinUtfToTChar(
    const char *string,
    int len,
    Tcl_DString *dsPtr)
{







    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }















































    return (char *)Tcl_UtfToWCharDString(string, len, dsPtr);



}

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






    Tcl_DStringInit(dsPtr);
    if (!string) {
	return NULL;
    }
    if (len < 0) {
	len = wcslen((wchar_t *)string);
    } else {
	len /= 2;
    }




























    return TclWCharToUtfDString((Tcl_UniChar *)string, len, dsPtr);

}

#if defined(TCL_WIDE_INT_IS_LONG)
/* On Cygwin64, long is 64-bit while on Win64 long is 32-bit. Therefore
 * we have to make sure that all stub entries on Cygwin64 follow the Win64
 * signature. Tcl 9 must find a better solution, but that cannot be done
 * without introducing a binary incompatibility.

	p += Tcl_UniCharToUtf(-1, p);
    }
    Tcl_DStringSetLength(dsPtr, oldLength + (p - string));

    return string;
}

#if (TCL_UTF_MAX > 4) && (defined(__CYGWIN__) || defined(_WIN32))
char *
TclWCharToUtfDString(
    const WCHAR *uniStr,	/* WCHAR string to convert to UTF-8. */
    int uniLength,		/* Length of WCHAR string in Tcl_UniChars
				 * (must be >= 0). */
    Tcl_DString *dsPtr)		/* UTF-8 representation of string is appended
				 * to this previously initialized DString. */
{
    const WCHAR *w, *wEnd;
    char *p, *string;
    int oldLength, len = 1;

    /*
     * UTF-8 string length in bytes will be <= Unicode string length * 4.
     */

    oldLength = Tcl_DStringLength(dsPtr);
    Tcl_DStringSetLength(dsPtr, oldLength + (uniLength + 1) * 4);
    string = Tcl_DStringValue(dsPtr) + oldLength;

    p = string;
    wEnd = uniStr + uniLength;
    for (w = uniStr; w < wEnd; ) {
	if (!len && ((*w & 0xFC00) != 0xDC00)) {
	    /* Special case for handling high surrogates. */
	    p += Tcl_UniCharToUtf(-1, p);
	}
	len = Tcl_UniCharToUtf(*w, p);
	p += len;
	if ((*w >= 0xD800) && (len < 3)) {
	    len = 0; /* Indication that high surrogate was found */
	}
	w++;
    }
    if (!len) {
	/* Special case for handling high surrogates. */
	p += Tcl_UniCharToUtf(-1, p);
    }
    Tcl_DStringSetLength(dsPtr, oldLength + (p - string));

    return string;
}
#endif
/*
 *---------------------------------------------------------------------------
 *
 * Tcl_UtfToUniChar --
 *
 *	Extract the Tcl_UniChar represented by the UTF-8 string. Bad UTF-8
 *	sequences are converted to valid Tcl_UniChars and processing

	 * represents itself.
	 */
    }

    *chPtr = byte;
    return 1;
}

#if (TCL_UTF_MAX > 4) && (defined(__CYGWIN__) || defined(_WIN32))
int
TclUtfToWChar(
    const char *src,	/* The UTF-8 string. */
    WCHAR *chPtr)/* Filled with the WCHAR represented by
				 * the UTF-8 string. */
{
    WCHAR byte;

    /*
     * Unroll 1 to 4 byte UTF-8 sequences.
     */

    byte = *((unsigned char *) src);
    if (byte < 0xC0) {
	/*
	 * Handles properly formed UTF-8 characters between 0x01 and 0x7F.
	 * Treats naked trail bytes 0x80 to 0x9F as valid characters from
	 * the cp1252 table. See: <https://en.wikipedia.org/wiki/UTF-8>
	 * Also treats \0 and other naked trail bytes 0xA0 to 0xBF as valid
	 * characters representing themselves.
	 */

	/* If *chPtr contains a high surrogate (produced by a previous
	 * Tcl_UtfToUniChar() call) and the next 3 bytes are UTF-8 continuation
	 * bytes, then we must produce a follow-up low surrogate. We only
	 * do that if the high surrogate matches the bits we encounter.
	 */
	if ((byte >= 0x80)
		&& (((((byte - 0x10) << 2) & 0xFC) | 0xD800) == (*chPtr & 0xFCFC))
		&& ((src[1] & 0xF0) == (((*chPtr << 4) & 0x30) | 0x80))
		&& ((src[2] & 0xC0) == 0x80)) {
	    *chPtr = ((src[1] & 0x0F) << 6) + (src[2] & 0x3F) + 0xDC00;
	    return 3;
	}
	if ((unsigned)(byte-0x80) < (unsigned)0x20) {
	    *chPtr = cp1252[byte-0x80];
	} else {
	    *chPtr = byte;
	}
	return 1;
    } else if (byte < 0xE0) {
	if ((src[1] & 0xC0) == 0x80) {
	    /*
	     * Two-byte-character lead-byte followed by a trail-byte.
	     */

	    *chPtr = (((byte & 0x1F) << 6) | (src[1] & 0x3F));
	    if ((unsigned)(*chPtr - 1) >= (UNICODE_SELF - 1)) {
		return 2;
	    }
	}

	/*
	 * A two-byte-character lead-byte not followed by trail-byte
	 * represents itself.
	 */
    } else if (byte < 0xF0) {
	if (((src[1] & 0xC0) == 0x80) && ((src[2] & 0xC0) == 0x80)) {
	    /*
	     * Three-byte-character lead byte followed by two trail bytes.
	     */

	    *chPtr = (((byte & 0x0F) << 12)
		    | ((src[1] & 0x3F) << 6) | (src[2] & 0x3F));
	    if (*chPtr > 0x7FF) {
		return 3;
	    }
	}

	/*
	 * A three-byte-character lead-byte not followed by two trail-bytes
	 * represents itself.
	 */
    }
    else if (byte < 0xF8) {
	if (((src[1] & 0xC0) == 0x80) && ((src[2] & 0xC0) == 0x80) && ((src[3] & 0xC0) == 0x80)) {
	    /*
	     * Four-byte-character lead byte followed by three trail bytes.
	     */
	    WCHAR high = (((byte & 0x07) << 8) | ((src[1] & 0x3F) << 2)
		    | ((src[2] & 0x3F) >> 4)) - 0x40;
	    if (high >= 0x400) {
		/* out of range, < 0x10000 or > 0x10ffff */
	    } else {
		/* produce high surrogate, advance source pointer */
		*chPtr = 0xD800 + high;
		return 1;
	    }
	}

	/*
	 * A four-byte-character lead-byte not followed by three trail-bytes
	 * represents itself.
	 */
    }

    *chPtr = byte;
    return 1;
}
#endif

/*
 *---------------------------------------------------------------------------
 *
 * Tcl_UtfToUniCharDString --
 *
 *	Convert the UTF-8 string to Unicode.
 *

    }
    *w = '\0';
    Tcl_DStringSetLength(dsPtr,
	    oldLength + ((char *) w - (char *) wString));

    return wString;
}

#if (TCL_UTF_MAX > 4) && (defined(__CYGWIN__) || defined(_WIN32))
WCHAR *
TclUtfToWCharDString(
    const char *src,		/* UTF-8 string to convert to Unicode. */
    int length,			/* Length of UTF-8 string in bytes, or -1 for
				 * strlen(). */
    Tcl_DString *dsPtr)		/* Unicode representation of string is
				 * appended to this previously initialized
				 * DString. */
{
    WCHAR ch = 0, *w, *wString;
    const char *p, *end;
    int oldLength;

    if (length < 0) {
	length = strlen(src);
    }

    /*
     * Unicode string length in Tcl_UniChars will be <= UTF-8 string length in
     * bytes.
     */

    oldLength = Tcl_DStringLength(dsPtr);

    Tcl_DStringSetLength(dsPtr,
	    oldLength + (int) ((length + 1) * sizeof(WCHAR)));
    wString = (WCHAR *) (Tcl_DStringValue(dsPtr) + oldLength);

    w = wString;
    p = src;
    end = src + length - 4;
    while (p < end) {
	p += TclUtfToWChar(p, &ch);
	*w++ = ch;
    }
    end += 4;
    while (p < end) {
	if (Tcl_UtfCharComplete(p, end-p)) {
	    p += TclUtfToWChar(p, &ch);
	} else if (((UCHAR(*p)-0x80)) < 0x20) {
	    ch = cp1252[UCHAR(*p++)-0x80];
	} else {
	    ch = UCHAR(*p++);
	}
	*w++ = ch;
    }
    *w = '\0';
    Tcl_DStringSetLength(dsPtr,
	    oldLength + ((char *) w - (char *) wString));

    return wString;
}
#endif
/*
 *---------------------------------------------------------------------------
 *
 * Tcl_UtfCharComplete --
 *
 *	Determine if the UTF-8 string of the given length is long enough to be
 *	decoded by Tcl_UtfToUniChar(). This does not ensure that the UTF-8

Tcl_WinUtfToTChar(
    const char *string,		/* Source string in UTF-8. */
    int 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 TclUtfToWCharDString(string, len, dsPtr);

}

char *
Tcl_WinTCharToUtf(
    const WCHAR *string,	/* Source string in Unicode. */
    int 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 < 0) {
	len = wcslen((WCHAR *)string);
    } else {
	len /= 2;
    }




    return TclWCharToUtfDString((unsigned short *)string, len, dsPtr);

























}

/*
 *------------------------------------------------------------------------
 *
 * TclWinCPUID --
 *

	 * It is hidden. However there is a bug on some Windows OSes in which
	 * root volumes (drives) formatted as NTFS are declared hidden when
	 * they are not (and cannot be).
	 *
	 * We test for, and fix that case, here.
	 */

	int len;
	const char *str = TclGetStringFromObj(fileName, &len);


	if (len < 4) {
	    if (len == 0) {
		/*
		 * Not sure if this is possible, but we pass it on anyway.
		 */
	    } else if (len == 1 && (str[0] == '/' || str[0] == '\\')) {

     */

    Tcl_IncrRefCount(splitPath);

    for (i = 0; i < pathc; i++) {
	Tcl_Obj *elt;
	char *pathv;
	int length;

	Tcl_ListObjIndex(NULL, splitPath, i, &elt);

	pathv = TclGetStringFromObj(elt, &length);
	if ((pathv[0] == '/') || ((length == 3) && (pathv[1] == ':'))
		|| (strcmp(pathv, ".") == 0) || (strcmp(pathv, "..") == 0)) {
	    /*
	     * Handle "/", "//machine/export", "c:/", "." or ".." by just
	     * copying the string literally.  Uppercase the drive letter, just
	     * because it looks better under Windows to do so.
	     */

	    Tcl_IncrRefCount(tempPath);

	    /*
	     * We'd like to call Tcl_FSGetNativePath(tempPath) but that is
	     * likely to lead to infinite loops.
	     */

	    tempString = TclGetStringFromObj(tempPath, &length);
	    nativeName = Tcl_WinUtfToTChar(tempString, length, &ds);
	    Tcl_DecrRefCount(tempPath);
	    handle = FindFirstFile(nativeName, &data);
	    if (handle == INVALID_HANDLE_VALUE) {
		/*
		 * FindFirstFile() doesn't like root directories. We would
		 * only get a root directory here if the caller specified "c:"
		 * or "c:." and the current directory on the drive was the

		Tcl_JoinPath(1, &ptr, bufferPtr);
		rc = 1;
		result = Tcl_DStringValue(bufferPtr);
	    }
	}
	Tcl_DStringFree(&ds);
    } else {
	Tcl_DStringInit(&ds);
	wName = TclUtfToWCharDString(domain + 1, -1, &ds);
	rc = NetGetDCName(NULL, wName, (LPBYTE *) &wDomain);
	Tcl_DStringFree(&ds);
	nameLen = domain - name;
    }
    if (rc == 0) {
	Tcl_DStringInit(&ds);
	wName = TclUtfToWCharDString(name, nameLen, &ds);
	while (NetUserGetInfo(wDomain, wName, 1, (LPBYTE *) &uiPtr) != 0) {
	    /*
	     * user does not exists - if domain was not specified,
	     * try again using current domain.
	     */
	    rc = 1;
	    if (domain != NULL) break;
	    /* get current domain */
	    rc = NetGetDCName(NULL, NULL, (LPBYTE *) &wDomain);
	    if (rc != 0) break;
	    domain = INT2PTR(-1); /* repeat once */
	}
	if (rc == 0) {
	    DWORD i, size = MAX_PATH;
	    wHomeDir = uiPtr->usri1_home_dir;
	    if ((wHomeDir != NULL) && (wHomeDir[0] != L'\0')) {
		size = lstrlenW(wHomeDir);
		TclWCharToUtfDString(wHomeDir, size, bufferPtr);
	    } else {
		/*
		 * User exists but has no home dir. Return
		 * "{GetProfilesDirectory}/<user>".
		 */
		GetProfilesDirectoryW(buf, &size);
		TclWCharToUtfDString(buf, size-1, bufferPtr);
		Tcl_DStringAppend(bufferPtr, "/", 1);
		Tcl_DStringAppend(bufferPtr, name, nameLen);
	    }
	    result = Tcl_DStringValue(bufferPtr);
	    /* be sure we return normalized path */
	    for (i = 0; i < size; ++i){
		if (result[i] == '\\') result[i] = '/';

    } else {
	/*
	 * Path of form C:foo/bar, but this only makes sense if the cwd is
	 * also on drive C.
	 */

	int cwdLen;

	const char *drive = TclGetStringFromObj(useThisCwd, &cwdLen);
	char drive_cur = path[0];

	if (drive_cur >= 'a') {
	    drive_cur -= ('a' - 'A');
	}
	if (drive[0] == drive_cur) {
	    absolutePath = Tcl_DuplicateObj(useThisCwd);

ClientData
TclNativeCreateNativeRep(
    Tcl_Obj *pathPtr)
{
    WCHAR *nativePathPtr = NULL;
    const char *str;
    Tcl_Obj *validPathPtr;
    int len;
    WCHAR *wp;

    if (TclFSCwdIsNative()) {
	/*
	 * The cwd is native, which means we can use the translated path
	 * without worrying about normalization (this will also usually be
	 * shorter so the utf-to-external conversion will be somewhat faster).

	if (validPathPtr == NULL) {
	    return NULL;
	}
	/* validPathPtr returned from Tcl_FSGetNormalizedPath is owned by Tcl, so incr refCount here */
	Tcl_IncrRefCount(validPathPtr);
    }

    str = Tcl_GetStringFromObj(validPathPtr, &len);


    if (strlen(str)!=(size_t)len) {
	/* String contains NUL-bytes. This is invalid. */
	goto done;
    }
    /* For a reserved device, strip a possible postfix ':' */
    len = WinIsReserved(str);
    if (len == 0) {
	/* Let MultiByteToWideChar check for other invalid sequences, like

    unsigned int *lengthPtr,
    Tcl_Encoding *encodingPtr)
{
#define LIBRARY_SIZE	    64
    Tcl_Obj *pathPtr;
    char installLib[LIBRARY_SIZE];
    const char *bytes;
    int length;

    pathPtr = Tcl_NewObj();

    /*
     * Initialize the substring used when locating the script library. The
     * installLib variable computes the script library path relative to the
     * installed DLL.

     * Look for the library in its source checkout location.
     */

    Tcl_ListObjAppendElement(NULL, pathPtr,
	    TclGetProcessGlobalValue(&sourceLibraryDir));

    *encodingPtr = NULL;
    bytes = TclGetStringFromObj(pathPtr, &length);
    *lengthPtr = length++;
    *valuePtr = ckalloc(length);
    memcpy(*valuePtr, bytes, length);
    Tcl_DecrRefCount(pathPtr);
}

/*
 *---------------------------------------------------------------------------
 *
 * AppendEnvironment --

    namePtr = (char *) name;
    length = GetTempPath(MAX_PATH, name);
    if (length == 0) {
	goto gotError;
    }
    namePtr += length * sizeof(TCHAR);
    if (basenameObj) {
	const char *string = TclGetStringFromObj(basenameObj, &length);

	Tcl_WinUtfToTChar(string, length, &buf);
	memcpy(namePtr, Tcl_DStringValue(&buf), Tcl_DStringLength(&buf));
	namePtr += Tcl_DStringLength(&buf);
	Tcl_DStringFree(&buf);
    } else {
	const TCHAR *baseStr = TEXT("TCL");
	length = 3 * sizeof(TCHAR);

	memcpy(namePtr, baseStr, length);
	namePtr += length;
    }
    counter = TclpGetClicks() % 65533;
    counter2 = 1024;			/* Only try this many times! Prevents
					 * an infinite loop. */