Tcl Source Code

accumulates the return values in a list which is returned to the
caller (with a reference count of 0).
.PP
\fBTcl_FSEvalFileEx\fR reads the file given by \fIpathPtr\fR using
the encoding identified by \fIencodingName\fR and evaluates
its contents as a Tcl script. It returns the same information as
\fBTcl_EvalObjEx\fR.
If \fIencodingName\fR is NULL, the system encoding is used for
reading the file contents.
If the file could not be read then a Tcl error is returned to describe
why the file could not be read.
The eofchar for files is
.QW \e32
(^Z) for all platforms.
If you require a
.QW ^Z
in code for string comparison, you can use
.QW \e032
or
.QW \eu001a ,
which will be safely substituted by the Tcl interpreter into
.QW ^Z .
\fBTcl_FSEvalFile\fR is a simpler version of
\fBTcl_FSEvalFileEx\fR that always uses the system encoding
when reading the file.
.PP
\fBTcl_FSLoadFile\fR dynamically loads a binary code file into memory and
returns the addresses of two procedures within that file, if they are
defined. The appropriate function for the filesystem to which \fIpathPtr\fR
belongs will be called. If that filesystem does not implement this
function (most virtual filesystems will not, because of OS limitations

which will be safely substituted by the Tcl interpreter into
.QW ^Z .
.PP
A leading BOM (Byte order mark) contained in the file is ignored for unicode encodings (utf-8, utf-16, ucs-2).
.PP
The \fB\-encoding\fR option is used to specify the encoding of
the data stored in \fIfileName\fR.  When the \fB\-encoding\fR option
is omitted, the system encoding is assumed.
.SH EXAMPLE
.PP
Run the script in the file \fBfoo.tcl\fR and then the script in the
file \fBbar.tcl\fR:
.PP
.CS
\fBsource\fR foo.tcl

int
Tcl_FSEvalFileEx(
    Tcl_Interp *interp,		/* Interpreter that evaluates the script. */
    Tcl_Obj *pathPtr,		/* Pathname of the file to process.
				 * Tilde-substitution is performed on this
				 * pathname. */
    const char *encodingName)	/* Either the name of an encoding or NULL to
				   use the system encoding. */
{
    int length, result = TCL_ERROR;
    Tcl_StatBuf statBuf;
    Tcl_Obj *oldScriptFile;
    Interp *iPtr;
    const char *string;
    Tcl_Channel chan;

     * uses it on every platform to allow for scripted documents. [Bug: 2040]
     */

    Tcl_SetChannelOption(interp, chan, "-eofchar", "\32 {}");

    /*
     * If the encoding is specified, set the channel to that encoding.
     * Otherwise don't touch it, leaving things up to the system encoding.  If
     * the encoding is unknown report an error.
     */

    if (encodingName != NULL) {


	if (Tcl_SetChannelOption(interp, chan, "-encoding", encodingName)
		!= TCL_OK) {
	    Tcl_Close(interp,chan);
	    return result;
	}
    }

    TclNewObj(objPtr);
    Tcl_IncrRefCount(objPtr);

    /*
     * Read first character of stream to check for utf-8 BOM

int
TclNREvalFile(
    Tcl_Interp *interp,		/* Interpreter in which to evaluate the script. */
    Tcl_Obj *pathPtr,		/* Pathname of a file containing the script to
				 * evaluate. Tilde-substitution is performed on
				 * this pathname. */
    const char *encodingName)	/* The name of an encoding to use, or NULL to
				 *  use the system encoding. */
{
    Tcl_StatBuf statBuf;
    Tcl_Obj *oldScriptFile, *objPtr;
    Interp *iPtr;
    Tcl_Channel chan;
    const char *string;

     * uses it on every platform to allow for scripted documents. [Bug: 2040]
     */

    Tcl_SetChannelOption(interp, chan, "-eofchar", "\32 {}");

    /*
     * If the encoding is specified, set the channel to that encoding.
     * Otherwise don't touch it, leaving things up to the system encoding.  If
     * the encoding is unknown report an error.
     */

    if (encodingName != NULL) {


	if (Tcl_SetChannelOption(interp, chan, "-encoding", encodingName)
		!= TCL_OK) {
	    Tcl_Close(interp,chan);
	    return TCL_ERROR;
	}
    }

    TclNewObj(objPtr);
    Tcl_IncrRefCount(objPtr);

    /*
     * Read first character of stream to check for utf-8 BOM

     * TODO: Describe whether we're using the system version of the library or
     * a compatibility version built into Tcl?
     */

    cfg[0].key = "zlibVersion";
    cfg[0].value = zlibVersion();
    cfg[1].key = NULL;
    Tcl_RegisterConfig(interp, "zlib", cfg, "iso8859-1");

    /*
     * Allow command type introspection to do something sensible with streams.
     */

    TclRegisterCommandTypeName(ZlibStreamCmd, "zlibStream");

    if { ![regexp {^[[.-.][:alpha:]_]+(?:/[[.-.][:alpha:]_]+)*$} $fileName] } {
	return -code error \
	    -errorcode [list CLOCK badTimeZone $:fileName] \
	    "time zone \":$fileName\" not valid"
    }
    try {
	source -encoding utf-8 [file join $DataDir $fileName]
    } on error {} {
	return -code error \
	    -errorcode [list CLOCK badTimeZone :$fileName] \
	    "time zone \":$fileName\" not found"
    }
    return
}

    proc ::tcl::initClock {} {
	# Auto-loading stubs for 'clock.tcl'

	foreach cmd {add format scan} {
	    proc ::tcl::clock::$cmd args {
		variable TclLibDir
		source -encoding utf-8 [file join $TclLibDir clock.tcl]
		return [uplevel 1 [info level 0]]
	    }
	}

	rename ::tcl::initClock {}
    }
    ::tcl::initClock

	set at 2
	if {$encoding eq "identity"} {
	    Log $child "attempt to use the identity encoding"
	    return -code error "permission denied"
	}
    } else {
	set at 0
	set encoding {}
    }
    if {$argc != 1} {
	set msg "wrong # args: should be \"source ?-encoding E? fileName\""
	Log $child "$msg ($args)"
	return -code error $msg
    }
    set file [lindex $args $at]

    # Passed all the tests, lets source it. Note that we do this all manually
    # because we want to control [info script] in the child so information
    # doesn't leak so much. [Bug 2913625]
    set old [::interp eval $child {info script}]
    set replacementMsg "script error"
    set code [catch {
	set f [open $realfile]
	fconfigure $f -eofchar \032
	if {$encoding ne ""} {
	    fconfigure $f -encoding $encoding
	}
	set contents [read $f]
	close $f
	::interp eval $child [list info script $file]
    } msg opt]
    if {$code == 0} {
	set code [catch {::interp eval $child $contents} msg opt]
	set replacementMsg $msg

		    # understands it, or, if not, update its implementation
		    # appropriately.
		    #
		    # Right now LOCATE's implementation assumes that the path
		    # of the package file is the last element in the list.

		    package ifneeded $pkgname $pkgversion \
			"[::list package provide $pkgname $pkgversion];[::list source -encoding utf-8 $file]"

		    # We abort in this unknown handler only if we got a
		    # satisfying candidate for the requested package.
		    # Otherwise we still have to fallback to the regular
		    # package search to complete the processing.

		    if {($pkgname eq $name)

	--enable-man-compression=PROG
				Compress the manpages using PROG.
	--enable-dtrace		Enable tcl DTrace provider (if DTrace is
				available on the platform), c.f. tclDTrace.d
				for descriptions of the probes made available,
				see http://wiki.tcl.tk/DTrace for more details
	--with-encoding=ENCODING Specifies the encoding for compile-time
				configuration values. Defaults to iso8859-1,
				which is also sufficient for ASCII.
	--with-tzdata=FLAG	Specifies whether to install timezone data. By
				default, the configure script tries to detect
				whether a usable timezone database is present
				on the system already.

    Mac OS X only (i.e. completely unsupported on other platforms):

  --enable-framework      package shared libraries in MacOSX frameworks
                          (default: off)

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
  --with-encoding         encoding for configuration values (default:
                          iso8859-1)
  --with-system-libtommath
                          use external libtommath (default: true if available,
                          false otherwise)
  --with-tzdata           install timezone data (default: autodetect)

Some influential environment variables:
  CC          C compiler command

cat >>confdefs.h <<_ACEOF
#define TCL_CFGVAL_ENCODING "${with_tcencoding}"
_ACEOF

    else

$as_echo "#define TCL_CFGVAL_ENCODING \"iso8859-1\"" >>confdefs.h

    fi


#--------------------------------------------------------------------
# Look for libraries that we will need when compiling the Tcl shell
#--------------------------------------------------------------------

#		TCL_CFGVAL_ENCODING
#
#--------------------------------------------------------------------

AC_DEFUN([SC_TCL_CFG_ENCODING], [
    AC_ARG_WITH(encoding,
	AC_HELP_STRING([--with-encoding],
	    [encoding for configuration values (default: iso8859-1)]),
	with_tcencoding=${withval})

    if test x"${with_tcencoding}" != x ; then
	AC_DEFINE_UNQUOTED(TCL_CFGVAL_ENCODING,"${with_tcencoding}",
	    [What encoding should be used for embedded configuration info?])
    else
	AC_DEFINE(TCL_CFGVAL_ENCODING,"iso8859-1",
	    [What encoding should be used for embedded configuration info?])
    fi
])

#--------------------------------------------------------------------
# SC_TCL_CHECK_BROKEN_FUNC
#

    if test x"${with_tcencoding}" != x ; then
	cat >>confdefs.h <<_ACEOF
#define TCL_CFGVAL_ENCODING "${with_tcencoding}"
_ACEOF

    else
	# Default encoding on windows is not "iso8859-1"
	$as_echo "#define TCL_CFGVAL_ENCODING \"cp1252\"" >>confdefs.h

    fi


#--------------------------------------------------------------------
# The statements below define a collection of symbols related to
# building libtcl as a shared library instead of a static library.

#		$(TMP_DIR) will de $(OUT_DIR)\<buildtype> by default.
#
#	TESTPAT=<file>
#		Reads the tests requested to be run from this file.
#
#	CFG_ENCODING=encoding
#		name of encoding for configuration information. Defaults
#		to cp1252
#
# Examples:
#       c:\tcl_src\win\>nmake -f makefile.vc release
#       c:\tcl_src\win\>nmake -f makefile.vc test
#       c:\tcl_src\win\>nmake -f makefile.vc install INSTALLDIR=c:\progra~1\tcl
#       c:\tcl_src\win\>nmake -f makefile.vc release OPTS=pdbs
#       c:\tcl_src\win\>nmake -f makefile.vc release OPTS=symbols

# Since MSVC8 we must deal with manifest resources.
!if $(VCVERSION) >= 1400
_VC_MANIFEST_EMBED_EXE=if exist [email protected] mt -nologo -manifest [email protected] -outputresource:$@;1
_VC_MANIFEST_EMBED_DLL=if exist [email protected] mt -nologo -manifest [email protected] -outputresource:$@;2
!endif

!ifndef CFG_ENCODING
CFG_ENCODING	= \"cp1252\"
!endif

################################################################
# 4. Build the nmakehlp program
# This is a helper app we need to overcome nmake's limiting
# environment. We will call out to it to get various bits of
# information about supported compiler options etc.

AC_DEFUN([SC_TCL_CFG_ENCODING], [
    AC_ARG_WITH(encoding, [  --with-encoding         encoding for configuration values], with_tcencoding=${withval})

    if test x"${with_tcencoding}" != x ; then
	AC_DEFINE_UNQUOTED(TCL_CFGVAL_ENCODING,"${with_tcencoding}")
    else
	# Default encoding on windows is not "iso8859-1"
	AC_DEFINE(TCL_CFGVAL_ENCODING,"cp1252")
    fi
])

#--------------------------------------------------------------------
# SC_EMBED_MANIFEST
#
#	Figure out if we can embed the manifest where necessary