Tcl Source Code

'\"
'\" Copyright (c) 1991-1993 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH library n "8.0" Tcl "Tcl Built-In Commands"
.so man.macros
.BS
.SH NAME
auto_execok, auto_import, auto_load, auto_mkindex, auto_qualify, auto_reset, tcl_findLibrary, parray, tcl_endOfWord, tcl_startOfNextWord, tcl_startOfPreviousWord, tcl_wordBreakAfter, tcl_wordBreakBefore \- standard library of Tcl procedures
.SH SYNOPSIS
.nf
\fBauto_execok \fIcmd\fR
\fBauto_import \fIpattern\fR
\fBauto_load \fIcmd\fR
\fBauto_mkindex \fIdir pattern pattern ...\fR
\fBauto_qualify \fIcommand namespace\fR
\fBauto_reset\fR
\fBtcl_findLibrary \fIbasename version patch initScript enVarName varName\fR
\fBparray \fIarrayName\fR ?\fIpattern\fR?
\fBtcl_endOfWord \fIstr start\fR
\fBtcl_startOfNextWord \fIstr start\fR
\fBtcl_startOfPreviousWord \fIstr start\fR
\fBtcl_wordBreakAfter \fIstr start\fR
\fBtcl_wordBreakBefore \fIstr start\fR
.BE
.SH INTRODUCTION

parses the Tcl scripts in a relatively
unsophisticated way:  if any line contains the word
.QW \fBproc\fR
as its first characters then it is assumed to be a procedure
definition and the next word of the line is taken as the
procedure's name.
Procedure definitions that do not appear in this way (e.g.\ they
have spaces before the \fBproc\fR) will not be indexed.  If your
script contains
.QW dangerous
code, such as global initialization
code or procedure names with special characters like \fB$\fR,
\fB*\fR, \fB[\fR or \fB]\fR, you are safer using \fBauto_mkindex_old\fR.
.RE
.TP

performing the actual auto-loading of functions at runtime.
.RE
.TP
\fBtcl_findLibrary \fIbasename version patch initScript enVarName varName\fR
This is a standard search procedure for use by extensions during
their initialization.  They call this procedure to look for their
script library in several standard directories.
The last component of the name of the library directory is
normally \fIbasenameversion\fR
(e.g., tk8.0), but it might be
.QW library
when in the build hierarchies.
The \fIinitScript\fR file will be sourced into the interpreter
once it is found.  The directory in which this file is found is
stored into the global variable \fIvarName\fR.
If this variable is already defined (e.g., by C code during
application initialization) then no searching is done.
Otherwise the search looks in these directories:
the directory named by the environment variable \fIenVarName\fR;
relative to the Tcl library directory;
relative to the executable file in the standard installation
bin or bin/\fIarch\fR directory;
relative to the executable file in the current build tree;
relative to the executable file in a parallel build tree.
.TP
\fBparray \fIarrayName\fR ?\fIpattern\fR?
Prints on standard output the names and values of all the elements in the
array \fIarrayName\fR, or just the names that match \fIpattern\fR (using the
matching rules of \fBstring match\fR) and their values if \fIpattern\fR is
given.
\fIArrayName\fR must be an array accessible to the caller of \fBparray\fR.
It may be either local or global.
.TP
\fBtcl_endOfWord \fIstr start\fR
Returns the index of the first end-of-word location that occurs after
a starting index \fIstart\fR in the string \fIstr\fR.  An end-of-word
location is defined to be the first non-word character following the

library scripts (the value of this variable will be
assigned to the \fBtcl_library\fR variable and therefore returned by
the command \fBinfo library\fR).  If this variable is not set then
a default value is used.
.TP
\fBenv(TCLLIBPATH)\fR
If set, then it must contain a valid Tcl list giving directories to
search during auto-load operations.  Directories must be specified in
Tcl format, using
.QW /
as the path separator, regardless of platform.
This variable is only used when initializing the \fBauto_path\fR variable.
.SS "WORD BOUNDARY DETERMINATION VARIABLES"
These variables are only used in the \fBtcl_endOfWord\fR,
\fBtcl_startOfNextWord\fR, \fBtcl_startOfPreviousWord\fR,

word or not.  If the pattern matches a character, the character is
considered to be a word character.  On Windows platforms, words are
comprised of any character that is not a space, tab, or newline.  Under
Unix, words are comprised of numbers, letters or underscores.
.SH "SEE ALSO"
env(n), info(n), re_syntax(n)
.SH KEYWORDS
auto-exec, auto-load, library, unknown, word, whitespace
'\"Local Variables:
'\"mode: nroff
'\"End:

PrintSourceToObj(
    Tcl_Obj *appendObj,		/* The object to print the source to. */
    const char *stringPtr,	/* The string to print. */
    int maxChars)		/* Maximum number of chars to print. */
{
    register const char *p;
    register int i = 0, len;
    Tcl_UniChar ch = 0;

    if (stringPtr == NULL) {
	Tcl_AppendToObj(appendObj, "\"\"", -1);
	return;
    }

    Tcl_AppendToObj(appendObj, "\"", -1);
    p = stringPtr;
    for (;  (*p != '\0') && (i < maxChars);  p+=len) {


	len = TclUtfToUniChar(p, &ch);
	switch (ch) {
	case '"':
	    Tcl_AppendToObj(appendObj, "\\\"", -1);
	    i += 2;
	    continue;

	    i += 2;
	    continue;
	case '\v':
	    Tcl_AppendToObj(appendObj, "\\v", -1);
	    i += 2;
	    continue;
	default:
#if TCL_UTF_MAX > 4
	    if ((int) ch > 0xffff) {
		Tcl_AppendPrintfToObj(appendObj, "\\U%08x", (int) ch);
		i += 10;
	    } else
#endif
	    if (ch < 0x20 || ch >= 0x7f) {
		Tcl_AppendPrintfToObj(appendObj, "\\u%04x", ch);
		i += 6;
	    } else {
		Tcl_AppendPrintfToObj(appendObj, "%c", ch);
		i++;
	    }

	    result = TCL_CONVERT_MULTIBYTE;
	    break;
	}
	if (dst > dstEnd) {
	    result = TCL_CONVERT_NOSPACE;
	    break;
	}
	src += TclUtfToUniChar(src, chPtr);

	/*
	 * Need to handle this in a way that won't cause misalignment by
	 * casting dst to a Tcl_UniChar. [Bug 1122671]

	 */

#ifdef WORDS_BIGENDIAN
#if TCL_UTF_MAX > 4
	*dst++ = (*chPtr >> 24);
	*dst++ = ((*chPtr >> 16) & 0xFF);
	*dst++ = ((*chPtr >> 8) & 0xFF);
	*dst++ = (*chPtr & 0xFF);
#else
	*dst++ = (*chPtr >> 8);
	*dst++ = (*chPtr & 0xFF);
#endif
#else
#if TCL_UTF_MAX > 4
	*dst++ = (*chPtr & 0xFF);
	*dst++ = ((*chPtr >> 8) & 0xFF);
	*dst++ = ((*chPtr >> 16) & 0xFF);
	*dst++ = (*chPtr >> 24);
#else
	*dst++ = (*chPtr & 0xFF);
	*dst++ = (*chPtr >> 8);
#endif
#endif
    }
    *srcReadPtr = src - srcStart;
    *dstWrotePtr = dst - dstStart;
    *dstCharsPtr = numChars;
    return result;
}

	encoding = Tcl_GetEncoding(NULL, NULL);
	Tcl_ExternalToUtfDString(encoding, name, -1, &utfName);
	TclSetObjNameOfExecutable(
		Tcl_NewStringObj(Tcl_DStringValue(&utfName), -1), encoding);
	Tcl_DStringFree(&utfName);
	goto done;
    }

    if (TclpGetCwd(NULL, &cwd) == NULL) {
	TclSetObjNameOfExecutable(Tcl_NewObj(), NULL);
	goto done;
    }

    /*
     * The name is relative to the current working directory. First strip off
     * a leading "./", if any, then add the full path name of the current
     * working directory.
     */

    if ((name[0] == '.') && (name[1] == '/')) {
	name += 2;
    }

    Tcl_DStringInit(&nameString);
    Tcl_DStringAppend(&nameString, name, -1);



    Tcl_DStringFree(&buffer);
    Tcl_UtfToExternalDString(NULL, Tcl_DStringValue(&cwd),
	    Tcl_DStringLength(&cwd), &buffer);
    if (Tcl_DStringValue(&cwd)[Tcl_DStringLength(&cwd) -1] != '/') {
	TclDStringAppendLiteral(&buffer, "/");
    }
    Tcl_DStringFree(&cwd);

	    # dynamic
            echo "$as_me:$LINENO: result: using shared flags" >&5
echo "${ECHO_T}using shared flags" >&6
	    runtime=-MD
	    # Add SHLIB_LD_LIBS to the Make rule, not here.
	    LIBRARIES="\${SHARED_LIBRARIES}"
	    EXESUFFIX="\${DBGX}.exe"
	    case "x`echo \${VisualStudioVersion}`" in
		x14*)
		    lflags="${lflags} -nodefaultlib:libucrt.lib"
		    ;;
		*)
		    ;;
	    esac
	fi
	MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\$@"
	# DLLSUFFIX is separate because it is the building block for
	# users of tclConfig.sh that may build shared or static.
	DLLSUFFIX="\${DBGX}.dll"
	LIBSUFFIX="\${DBGX}.lib"
	LIBFLAGSUFFIX="\${DBGX}"

	    else
		echo "$as_me:$LINENO: result:    Using 64-bit $MACHINE mode" >&5
echo "${ECHO_T}   Using 64-bit $MACHINE mode" >&6
	    fi
	fi

	LIBS="netapi32.lib kernel32.lib user32.lib advapi32.lib ws2_32.lib"

	case "x`echo \${VisualStudioVersion}`" in
		x14*)
		    LIBS="$LIBS ucrt.lib"
		    ;;
		*)
		    ;;
	esac

	if test "$do64bit" != "no" ; then
	    # The space-based-path will work for the Makefile, but will
	    # not work if AC_TRY_COMPILE is called.  TEA has the
	    # TEA_PATH_NOSPACE to avoid this issue.
	    # Check if _WIN64 is already recognized, and if so we don't
	    # need to modify CC.
	    echo "$as_me:$LINENO: checking whether _WIN64 is declared" >&5

			 -I\"${MSSDK}/Include/crt/sys\""
fi

	    RC="\"${MSSDK}/bin/rc.exe\""
	    CFLAGS_DEBUG="-nologo -Zi -Od ${runtime}d"
	    # Do not use -O2 for Win64 - this has proved buggy in code gen.
	    CFLAGS_OPTIMIZE="-nologo -O1 ${runtime}"
	    lflags="${lflags} -nologo -MACHINE:${MACHINE} -LIBPATH:\"${MSSDK}/Lib/${MACHINE}\""
	    LINKBIN="\"${PATH64}/link.exe\""
	    # Avoid 'unresolved external symbol __security_cookie' errors.
	    # c.f. http://support.microsoft.com/?id=894573
	    LIBS="$LIBS bufferoverflowU.lib"
	else
	    RC="rc"
	    # -Od - no optimization
	    # -WX - warnings as errors
	    CFLAGS_DEBUG="-nologo -Z7 -Od -WX ${runtime}d"
	    # -O2 - create fast code (/Og /Oi /Ot /Oy /Ob2 /Gs /GF /Gy)
	    CFLAGS_OPTIMIZE="-nologo -O2 ${runtime}"
	    lflags="${lflags} -nologo"
	    LINKBIN="link"
	fi

	if test "$doWince" != "no" ; then
	    # Set defaults for common evc4/PPC2003 setup
	    # Currently Tcl requires 300+, possibly 420+ for sockets
	    CEVERSION=420; 		# could be 211 300 301 400 420 ...

#		    help files (.chm)
#
# 4)  Macros usable on the commandline:
#	INSTALLDIR=<path>
#		Sets where to install Tcl from the built binaries.
#		C:\Progra~1\Tcl is assumed when not specified.
#
#	OPTS=loimpact,msvcrt,nothreads,pdbs,profile,static,staticpkg,symbols,thrdalloc,tclalloc,unchecked,none
#		Sets special options for the core.  The default is for none.
#		Any combination of the above may be used (comma separated).
#		'none' will over-ride everything to nothing.
#
#		loimpact = Adds a flag for how NT treats the heap to keep memory
#			   in use, low.  This is said to impact alloc performance.
#		msvcrt   = Affects the static option only to switch it from

#			   optimizations and creates pdb symbols files.
#		thrdalloc = Use the thread allocator (shared global free pool)
#			   This is the default on threaded builds.
#		tclalloc = Use the old non-thread allocator
#		unchecked= Allows a symbols build to not use the debug
#			   enabled runtime (msvcrt.dll not msvcrtd.dll
#			   or libcmt.lib not libcmtd.lib).





#
#	STATS=compdbg,memdbg,none
#		Sets optional memory and bytecode compiler debugging code added
#		to the core.  The default is for none.  Any combination of the
#		above may be used (comma separated).  'none' will over-ride
#		everything to nothing.
#

cdebug	= -Zi -WX $(DEBUGFLAGS)
!endif

### Declarations common to all compiler options
cwarn = $(WARNINGS) -D _CRT_SECURE_NO_DEPRECATE -D _CRT_NONSTDC_NO_DEPRECATE
cflags = -nologo -c $(COMPILERFLAGS) $(cwarn) -Fp$(TMP_DIR)^\







!if $(MSVCRT)
!if $(DEBUG) && !$(UNCHECKED)
crt = -MDd
!else
crt = -MD
!endif
!else
!if $(DEBUG) && !$(UNCHECKED)

### Declarations common to all linker options
lflags	= -nologo -machine:$(MACHINE) $(LINKERFLAGS) $(ldebug)

!if $(PROFILE)
lflags	= $(lflags) -profile
!endif

!if $(MSVCRT) && !($(DEBUG) && !$(UNCHECKED)) && $(VCVERSION) >= 1900
lflags	= $(lflags) -nodefaultlib:libucrt.lib
!endif

!if $(ALIGN98_HACK) && !$(STATIC_BUILD)
### Align sections for PE size savings.
lflags	= $(lflags) -opt:nowin98
!else if !$(ALIGN98_HACK) && $(STATIC_BUILD)

# Avoid 'unresolved external symbol __security_cookie' errors.
# c.f. http://support.microsoft.com/?id=894573
!if "$(MACHINE)" == "IA64" || "$(MACHINE)" == "AMD64"
!if $(VCVERSION) > 1399 && $(VCVERSION) < 1500
baselibs   = $(baselibs) bufferoverflowU.lib
!endif
!endif
!if $(MSVCRT) && !($(DEBUG) && !$(UNCHECKED)) && $(VCVERSION) >= 1900
baselibs   = $(baselibs) ucrt.lib
!endif

#---------------------------------------------------------------------
# TclTest flags
#---------------------------------------------------------------------

PROFILE		= 0
PGO		= 0
MSVCRT		= 1
LOIMPACT	= 0
TCL_USE_STATIC_PACKAGES	= 0
USE_THREAD_ALLOC = 1
UNCHECKED	= 0

!else
!if [nmakehlp -f $(OPTS) "static"]
!message *** Doing static
STATIC_BUILD	= 1
!else
STATIC_BUILD	= 0
!endif

!if [nmakehlp -f $(OPTS) "unchecked"]
!message *** Doing unchecked
UNCHECKED = 1
!else
UNCHECKED = 0
!endif
!endif







#----------------------------------------------------------
# Figure-out how to name our intermediate and output directories.
# We wouldn't want different builds to use the same .obj files
# by accident.
#----------------------------------------------------------

	else
	    # dynamic
            AC_MSG_RESULT([using shared flags])
	    runtime=-MD
	    # Add SHLIB_LD_LIBS to the Make rule, not here.
	    LIBRARIES="\${SHARED_LIBRARIES}"
	    EXESUFFIX="\${DBGX}.exe"
	    case "x`echo \${VisualStudioVersion}`" in
		x14*)
		    lflags="${lflags} -nodefaultlib:libucrt.lib"
		    ;;
		*)
		    ;;
	    esac
	fi
	MAKE_DLL="\${SHLIB_LD} \$(LDFLAGS) -out:\[$]@"
	# DLLSUFFIX is separate because it is the building block for
	# users of tclConfig.sh that may build shared or static.
	DLLSUFFIX="\${DBGX}.dll"
	LIBSUFFIX="\${DBGX}.lib"
	LIBFLAGSUFFIX="\${DBGX}"

		do64bit="no"
	    else
		AC_MSG_RESULT([   Using 64-bit $MACHINE mode])
	    fi
	fi

	LIBS="netapi32.lib kernel32.lib user32.lib advapi32.lib ws2_32.lib"

	case "x`echo \${VisualStudioVersion}`" in
		x14*)
		    LIBS="$LIBS ucrt.lib"
		    ;;
		*)
		    ;;
	esac

	if test "$do64bit" != "no" ; then
	    # The space-based-path will work for the Makefile, but will
	    # not work if AC_TRY_COMPILE is called.  TEA has the
	    # TEA_PATH_NOSPACE to avoid this issue.
	    # Check if _WIN64 is already recognized, and if so we don't
	    # need to modify CC.
	    AC_CHECK_DECL([_WIN64], [],
			  [CC="\"${PATH64}/cl.exe\" -I\"${MSSDK}/Include\" \
			 -I\"${MSSDK}/Include/crt\" \
			 -I\"${MSSDK}/Include/crt/sys\""])
	    RC="\"${MSSDK}/bin/rc.exe\""
	    CFLAGS_DEBUG="-nologo -Zi -Od ${runtime}d"
	    # Do not use -O2 for Win64 - this has proved buggy in code gen.
	    CFLAGS_OPTIMIZE="-nologo -O1 ${runtime}"
	    lflags="${lflags} -nologo -MACHINE:${MACHINE} -LIBPATH:\"${MSSDK}/Lib/${MACHINE}\""
	    LINKBIN="\"${PATH64}/link.exe\""
	    # Avoid 'unresolved external symbol __security_cookie' errors.
	    # c.f. http://support.microsoft.com/?id=894573
	    LIBS="$LIBS bufferoverflowU.lib"
	else
	    RC="rc"
	    # -Od - no optimization
	    # -WX - warnings as errors
	    CFLAGS_DEBUG="-nologo -Z7 -Od -WX ${runtime}d"
	    # -O2 - create fast code (/Og /Oi /Ot /Oy /Ob2 /Gs /GF /Gy)
	    CFLAGS_OPTIMIZE="-nologo -O2 ${runtime}"
	    lflags="${lflags} -nologo"
	    LINKBIN="link"
	fi

	if test "$doWince" != "no" ; then
	    # Set defaults for common evc4/PPC2003 setup
	    # Currently Tcl requires 300+, possibly 420+ for sockets
	    CEVERSION=420; 		# could be 211 300 301 400 420 ...

	} else if (*wp == '/') {
	    *wp = '\\';
	}
	++wp;
    }

  done:

    TclDecrRefCount(validPathPtr);
    return nativePathPtr;
}

/*
 *---------------------------------------------------------------------------
 *