/*
 * tclBinary.c --
 *
 *	This file contains the implementation of the "binary" Tcl built-in
 *	command and the Tcl binary data object.
 *
 * Copyright (c) 1997 by Sun Microsystems, Inc.
 * Copyright (c) 1998-1999 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclBinary.c,v 1.13.4.35 2010/04/30 14:16:17 dgp Exp $
 */

#include "tclInt.h"
#include "tommath.h"

#include <math.h>

    /*
     * If we need to, resize the allocated space in the byte array.
     */

    if (byteArrayPtr->used + (int)len > byteArrayPtr->allocated) {
	unsigned int attempt, used = byteArrayPtr->used;
	ByteArray *tmpByteArrayPtr = NULL;

	attempt = byteArrayPtr->allocated;
	do {
	    attempt *= 2;
	} while (attempt < used+len);

	if (BYTEARRAY_SIZE(attempt) > BYTEARRAY_SIZE(used)) {
	    tmpByteArrayPtr = (ByteArray *)
		    attemptckrealloc((char *) byteArrayPtr,
			    BYTEARRAY_SIZE(attempt));
	}

	if (tmpByteArrayPtr == NULL) {
	    attempt = used + len;
	    if (BYTEARRAY_SIZE(attempt) < BYTEARRAY_SIZE(used)) {
		Tcl_Panic("attempt to allocate a bigger buffer than we can handle");
	    }
	    tmpByteArrayPtr = (ByteArray *) ckrealloc((char *) byteArrayPtr,
		    BYTEARRAY_SIZE(attempt));
	}

	byteArrayPtr = tmpByteArrayPtr;
	byteArrayPtr->allocated = attempt;
	byteArrayPtr->used = used;

	    if (count == BINARY_NOCOUNT) {
		/*
		 * Note that we are casting away the const-ness of objv, but
		 * this is safe since we aren't going to modify the array.
		 */

		listv = (Tcl_Obj **) (objv + arg);
		listc = 1;
		count = 1;
	    } else {
		TclListObjGetElements(interp, objv[arg], &listc, &listv);
		if (count == BINARY_ALL) {
		    count = listc;
		}