tclloadnone.c

tcl是工具命令语言

/* 
 * tclLoadNone.c --
 *
 *	This procedure provides a version of the TclLoadFile for use
 *	in systems that don't support dynamic loading; it just returns
 *	an error.
 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclLoadNone.c,v 1.11 2002/07/18 16:26:03 vincentdarley Exp $
 */

#include "tclInt.h"

/*
 *----------------------------------------------------------------------
 *
 * TclpDlopen --
 *
 *	This procedure is called to carry out dynamic loading of binary
 *	code;  it is intended for use only on systems that don't support
 *	dynamic loading (it returns an error).
 *
 * Results:
 *	The result is TCL_ERROR, and an error message is left in
 *	the interp's result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
    Tcl_Interp *interp;		/* Used for error reporting. */
    Tcl_Obj *pathPtr;		/* Name of the file containing the desired
				 * code (UTF-8). */
    Tcl_LoadHandle *loadHandle;	/* Filled with token for dynamically loaded
				 * file which will be passed back to 
				 * (*unloadProcPtr)() to unload the file. */
    Tcl_FSUnloadFileProc **unloadProcPtr;	
				/* Filled with address of Tcl_FSUnloadFileProc
				 * function which should be used for
				 * this file. */
{
    Tcl_SetResult(interp,
	    "dynamic loading is not currently available on this system",
	    TCL_STATIC);
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * TclpFindSymbol --
 *
 *	Looks up a symbol, by name, through a handle associated with
 *	a previously loaded piece of code (shared library).
 *
 * Results:
 *	Returns a pointer to the function associated with 'symbol' if
 *	it is found.  Otherwise returns NULL and may leave an error
 *	message in the interp's result.
 *
 *----------------------------------------------------------------------
 */
Tcl_PackageInitProc*
TclpFindSymbol(interp, loadHandle, symbol) 
    Tcl_Interp *interp;
    Tcl_LoadHandle loadHandle;
    CONST char *symbol;
{
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * TclGuessPackageName --
 *
 *	If the "load" command is invoked without providing a package
 *	name, this procedure is invoked to try to figure it out.
 *
 * Results:
 *	Always returns 0 to indicate that we couldn't figure out a
 *	package name;  generic code will then try to guess the package
 *	from the file name.  A return value of 1 would have meant that
 *	we figured out the package name and put it in bufPtr.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
TclGuessPackageName(fileName, bufPtr)
    CONST char *fileName;	/* Name of file containing package (already
				 * translated to local form if needed). */
    Tcl_DString *bufPtr;	/* Initialized empty dstring.  Append
				 * package name to this if possible. */
{
    return 0;
}

/*
 *----------------------------------------------------------------------
 *
 * TclpUnloadFile --
 *
 *    This procedure is called to carry out dynamic unloading of binary
 *    code;  it is intended for use only on systems that don't support
 *    dynamic loading (it does nothing).
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

void
TclpUnloadFile(loadHandle)
    Tcl_LoadHandle loadHandle;	/* loadHandle returned by a previous call
				 * to TclpDlopen().  The loadHandle is 
				 * a token that represents the loaded 
				 * file. */
{
}