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git://git.code.sf.net/p/cdesktopenv/code
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118 lines
2.5 KiB
C
118 lines
2.5 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: isbytearray.c /main/3 1995/10/23 11:36:32 rswiston $ */
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/*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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*/
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/*
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* isbytearray.c
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*
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* Description:
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* Byte array handling functions.
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*
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*/
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#include <stdlib.h>
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#include "isam_impl.h"
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/*
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* _bytearr_getempty()
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*
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* Return an empty byte array.
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*/
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Bytearray
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_bytearr_getempty(void)
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{
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static Bytearray empty_bytearray = { 0, NULL};
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return (empty_bytearray);
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}
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/*
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* bytearray = _bytearr_new(len, data)
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*
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* Create a byte array object.
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*/
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Bytearray
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_bytearr_new(u_short len, char *data)
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{
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Bytearray bytearray;
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bytearray.length = len;
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bytearray.data = _ismalloc(len);
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memcpy( bytearray.data,data, (int)len);
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return (bytearray);
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}
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/*
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* new = _bytearr_dup(old)
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*
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* Duplicate a byte array object.
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*/
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Bytearray
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_bytearr_dup(Bytearray *old)
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{
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return (_bytearr_new(old->length, old->data));
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}
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/*
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* _bytearr_free(barrray)
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*
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* Free byte array buffer, set barray to an empty byte array.
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*/
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void
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_bytearr_free(Bytearray *barray)
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{
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if (barray->data)
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free(barray->data);
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*barray = _bytearr_getempty();
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}
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/*
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* _bytearr_cmp(l, r)
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*
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* Compare two byte array objects. Return 0 if they are equal, non-zero if
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* they differ.
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*/
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int
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_bytearr_cmp(Bytearray *l, Bytearray *r)
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{
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if (l->length == r->length)
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return (memcmp(l->data, r->data, (int)l->length));
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else
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return (1); /* not equal */
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}
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