133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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//%% (c) Copyright 1993, 1994 Hewlett-Packard Company
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//%% (c) Copyright 1993, 1994 International Business Machines Corp.
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//%% (c) Copyright 1993, 1994 Sun Microsystems, Inc.
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//%% (c) Copyright 1993, 1994 Novell, Inc.
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//%% $XConsortium: binkey.C /main/3 1995/10/20 16:24:54 rswiston $
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/*
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*
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* binkey.cc
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*
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* Copyright (c) 1991 by Sun Microsystems, Inc.
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*/
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#include "util/tt_string.h"
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#include "db/tt_db_key_utils.h"
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#include "binkey.h"
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#include <memory.h>
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static unsigned char sixteen_zeroes[OID_KEY_LENGTH] = {
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0,0,0,0,
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0,0,0,0,
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0,0,0,0,
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0,0,0,0};
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static unsigned char sixteen_foxes[OID_KEY_LENGTH] = {
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255,255,255,255,
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255,255,255,255,
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255,255,255,255,
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255,255,255,255};
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Binkey Binkey::smallest(sixteen_zeroes);
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Binkey Binkey::largest(sixteen_foxes);
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static int binkey_compare(const unsigned char *a, const unsigned char *b);
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Binkey::
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Binkey()
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{
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memset((char *)_binkey, 0, sizeof(_binkey));
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_key = (_Tt_db_key *)0;
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}
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Binkey::
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Binkey(const unsigned char *k)
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{
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_Tt_string bks(k, sizeof(_binkey));
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memcpy((char *)_binkey, k, sizeof(_binkey));
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_key = new _Tt_db_key(bks);
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}
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Binkey & Binkey::
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operator=(const Binkey &k)
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{
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memcpy((char *)_binkey, (char *)k._binkey, sizeof(_binkey));
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_key = new _Tt_db_key(k);
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return *this;
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}
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Binkey & Binkey::
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operator=(const unsigned char *k)
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{
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_Tt_string bks(k, sizeof(_binkey));
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memcpy((char *)_binkey, k, sizeof(_binkey));
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_key = new _Tt_db_key(bks);
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return *this;
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}
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int
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operator==(const Binkey &a, const _Tt_db_key &b)
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{
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return b==*a._key;
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}
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int
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operator==(const Binkey &a, const Binkey &b)
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{
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return binkey_compare(a._binkey,b._binkey)==0;
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}
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int
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operator<(const Binkey &a, const Binkey &b)
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{
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return binkey_compare(a._binkey,b._binkey)<0;
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}
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int
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operator>(const Binkey &a, const Binkey &b)
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{
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return binkey_compare(a._binkey,b._binkey)>0;
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}
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static int
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binkey_compare(const unsigned char *pa, const unsigned char *pb)
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{
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// No libc routines seem to guarantee to handle unsigned chars!
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int i = OID_KEY_LENGTH;
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while (i--) {
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if (*pa>*pb) return 1;
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if (*pa++<*pb++) return -1;
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}
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return 0;
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}
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void Binkey::
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print(FILE* f) const
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{
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if (_key.is_null()) {
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fprintf(f,"(null key)");
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} else {
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_key->print(f);
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}
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}
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