176 lines
4.7 KiB
C
176 lines
4.7 KiB
C
/*
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* tclLoadNone.c --
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*
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* This procedure provides a version of the TclLoadFile for use in
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* systems that don't support dynamic loading; it just returns an error.
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*
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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#include "tclInt.h"
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/*
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*----------------------------------------------------------------------
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*
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* TclpDlopen --
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*
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* This procedure is called to carry out dynamic loading of binary code;
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* it is intended for use only on systems that don't support dynamic
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* loading (it returns an error).
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*
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* Results:
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* The result is TCL_ERROR, and an error message is left in the interp's
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* result.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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int
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TclpDlopen(
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Tcl_Interp *interp, /* Used for error reporting. */
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Tcl_Obj *pathPtr, /* Name of the file containing the desired
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* code (UTF-8). */
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Tcl_LoadHandle *loadHandle, /* Filled with token for dynamically loaded
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* file which will be passed back to
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* (*unloadProcPtr)() to unload the file. */
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Tcl_FSUnloadFileProc **unloadProcPtr)
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/* Filled with address of Tcl_FSUnloadFileProc
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* function which should be used for this
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* file. */
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{
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Tcl_SetResult(interp,
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"dynamic loading is not currently available on this system",
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TCL_STATIC);
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return TCL_ERROR;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TclpFindSymbol --
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*
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* Looks up a symbol, by name, through a handle associated with a
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* previously loaded piece of code (shared library). This version of this
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* routine should never be called because the associated TclpDlopen()
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* function always returns an error.
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*
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* Results:
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* Returns a pointer to the function associated with 'symbol' if it is
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* found. Otherwise returns NULL and may leave an error message in the
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* interp's result.
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*
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*----------------------------------------------------------------------
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*/
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Tcl_PackageInitProc *
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TclpFindSymbol(
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Tcl_Interp *interp,
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Tcl_LoadHandle loadHandle,
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CONST char *symbol)
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{
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return NULL;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TclGuessPackageName --
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*
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* If the "load" command is invoked without providing a package name,
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* this procedure is invoked to try to figure it out.
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*
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* Results:
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* Always returns 0 to indicate that we couldn't figure out a package
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* name; generic code will then try to guess the package from the file
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* name. A return value of 1 would have meant that we figured out the
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* package name and put it in bufPtr.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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int
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TclGuessPackageName(
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CONST char *fileName, /* Name of file containing package (already
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* translated to local form if needed). */
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Tcl_DString *bufPtr) /* Initialized empty dstring. Append package
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* name to this if possible. */
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{
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return 0;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TclpUnloadFile --
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*
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* This procedure is called to carry out dynamic unloading of binary code;
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* it is intended for use only on systems that don't support dynamic
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* loading (it does nothing).
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*
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* Results:
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* None.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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void
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TclpUnloadFile(
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Tcl_LoadHandle loadHandle) /* loadHandle returned by a previous call to
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* TclpDlopen(). The loadHandle is a token
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* that represents the loaded file. */
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{
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}
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/*
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* These functions are fallbacks if we somehow determine that the platform can
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* do loading from memory but the user wishes to disable it. They just report
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* (gracefully) that they fail.
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*/
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#ifdef TCL_LOAD_FROM_MEMORY
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MODULE_SCOPE void *
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TclpLoadMemoryGetBuffer(
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Tcl_Interp *interp, /* Dummy: unused by this implementation */
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int size) /* Dummy: unused by this implementation */
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{
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return NULL;
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}
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MODULE_SCOPE int
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TclpLoadMemory(
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Tcl_Interp *interp, /* Used for error reporting. */
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void *buffer, /* Dummy: unused by this implementation */
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int size, /* Dummy: unused by this implementation */
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int codeSize, /* Dummy: unused by this implementation */
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Tcl_LoadHandle *loadHandle, /* Dummy: unused by this implementation */
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Tcl_FSUnloadFileProc **unloadProcPtr)
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/* Dummy: unused by this implementation */
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{
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Tcl_SetResult(interp, "dynamic loading from memory is not available "
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"on this system", TCL_STATIC);
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return TCL_ERROR;
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}
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#endif /* TCL_LOAD_FROM_MEMORY */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 4
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* fill-column: 78
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* End:
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*/
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