* Prototypes for functions that are private to this file:
 */

static void	LoadCleanupProc(void *clientData,
		    Tcl_Interp *interp);
static int	IsStatic(LoadedLibrary *libraryPtr);
static int	UnloadLibrary(Tcl_Interp *interp, Tcl_Interp *target,
		    LoadedLibrary *library, int keepLibrary,
		    const char *fullFileName, int interpExiting);

static int
IsStatic(
    LoadedLibrary *libraryPtr)
{
    return (libraryPtr->fileName[0] == '\0');
}

    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Interp *target;
    LoadedLibrary *libraryPtr, *defaultPtr;
    Tcl_DString pfx, tmp, initName, safeInitName;
    Tcl_DString unloadName, safeUnloadName;
    int code, namesMatch, filesMatch;
    Tcl_Size offset;
    Tcl_LibraryInitProc *initProc;
    const char *fullFileName, *prefix;
    Tcl_LoadHandle loadHandle;
    Tcl_UniChar ch = 0;
    size_t len;
    int flags = 0;

     */

    Tcl_MutexLock(&libraryMutex);

    defaultPtr = NULL;
    for (libraryPtr = firstLibraryPtr; libraryPtr != NULL;
	    libraryPtr = libraryPtr->nextPtr) {

	if (prefix == NULL) {
	    namesMatch = 0;
	} else {
	    TclDStringClear(&pfx);
	    Tcl_DStringAppend(&pfx, prefix, -1);
	    TclDStringClear(&tmp);
	    Tcl_DStringAppend(&tmp, libraryPtr->prefix, -1);
	    if (strcmp(Tcl_DStringValue(&tmp),
		    Tcl_DStringValue(&pfx)) == 0) {
		namesMatch = 1;
	    } else {
		namesMatch = 0;
	    }
	}
	TclDStringClear(&pfx);

	filesMatch = (strcmp(libraryPtr->fileName, fullFileName) == 0);
	if (filesMatch && (namesMatch || (prefix == NULL))) {
	    break;
	}

    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    Tcl_Interp *target;		/* Which interpreter to unload from. */
    LoadedLibrary *libraryPtr;
    Tcl_DString pfx, tmp;
    InterpLibrary *ipFirstPtr, *ipPtr;
    int i, code, complain = 1, keepLibrary = 0;

    const char *fullFileName = "";
    const char *prefix;
    static const char *const options[] = {
	"-nocomplain", "-keeplibrary", "--", NULL
    };
    enum unloadOptionsEnum {
	UNLOAD_NOCOMPLAIN, UNLOAD_KEEPLIB, UNLOAD_LAST

		Tcl_ResetResult(interp);
		break;
	    }
	}
	switch (index) {
	case UNLOAD_NOCOMPLAIN:		/* -nocomplain */
	    complain = 0;
	    break;
	case UNLOAD_KEEPLIB:		/* -keeplibrary */
	    keepLibrary = 1;
	    break;
	case UNLOAD_LAST:		/* -- */
	    i++;
	    goto endOfForLoop;
	default:
	    TCL_UNREACHABLE();
	}

     *  - Its prefix matches, the file name was specified as empty, and there is
     *	  no statically loaded library with the same prefix.
     */

    Tcl_MutexLock(&libraryMutex);

    for (libraryPtr = firstLibraryPtr; libraryPtr != NULL; libraryPtr = libraryPtr->nextPtr) {
	int namesMatch, filesMatch;

	if (prefix == NULL) {
	    namesMatch = 0;
	} else {
	    TclDStringClear(&pfx);
	    Tcl_DStringAppend(&pfx, prefix, -1);
	    TclDStringClear(&tmp);
	    Tcl_DStringAppend(&tmp, libraryPtr->prefix, -1);
	    if (strcmp(Tcl_DStringValue(&tmp),
		    Tcl_DStringValue(&pfx)) == 0) {
		namesMatch = 1;
	    } else {
		namesMatch = 0;
	    }
	}
	TclDStringClear(&pfx);

	filesMatch = (strcmp(libraryPtr->fileName, fullFileName) == 0);
	if (filesMatch && (namesMatch || (prefix == NULL))) {
	    break;
	}

		"file \"%s\" has never been loaded in this interpreter",
		fullFileName);
	TclSetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NEVERLOADED");
	code = TCL_ERROR;
	goto done;
    }

    code = UnloadLibrary(interp, target, libraryPtr, keepLibrary, fullFileName, 0);


  done:
    Tcl_DStringFree(&pfx);
    Tcl_DStringFree(&tmp);
    if (!complain && (code != TCL_OK)) {
	code = TCL_OK;
	Tcl_ResetResult(interp);

 *----------------------------------------------------------------------
 */
static int
UnloadLibrary(
    Tcl_Interp *interp,
    Tcl_Interp *target,
    LoadedLibrary *libraryPtr,
    int keepLibrary,
    const char *fullFileName,
    int interpExiting)
{
    int code;
    InterpLibrary *ipFirstPtr, *ipPtr;
    LoadedLibrary *iterLibraryPtr;
    int trustedRefCount = -1, safeRefCount = -1;
    Tcl_LibraryUnloadProc *unloadProc = NULL;

    Tcl_Interp *interp)
{
    InterpLibrary *ipPtr = (InterpLibrary *)clientData, *nextPtr;
    LoadedLibrary *libraryPtr;

    while (ipPtr) {
	libraryPtr = ipPtr->libraryPtr;
	UnloadLibrary(interp, interp, libraryPtr, 0, "", 1);
	/* UnloadLibrary doesn't free it by interp delete, so do it here and
	 * repeat for next. */
	nextPtr = ipPtr->nextPtr;
	Tcl_Free(ipPtr);
	ipPtr = nextPtr;
    }
}