BitOps.hpp
上传用户:zhuqijet
上传日期:2013-06-25
资源大小:10074k
文件大小:5k
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: BitOps.hpp,v $
- * Revision 1.3 2003/03/07 18:11:54 tng
- * Return a reference instead of void for operator=
- *
- * Revision 1.2 2002/11/04 15:22:03 tng
- * C++ Namespace Support.
- *
- * Revision 1.1.1.1 2002/02/01 22:22:10 peiyongz
- * sane_include
- *
- * Revision 1.7 2000/09/06 00:24:15 andyh
- * Clean up misc compiler warnings
- *
- * Revision 1.6 2000/03/02 19:54:38 roddey
- * This checkin includes many changes done while waiting for the
- * 1.1.0 code to be finished. I can't list them all here, but a list is
- * available elsewhere.
- *
- * Revision 1.5 2000/02/24 20:05:24 abagchi
- * Swat for removing Log from API docs
- *
- * Revision 1.4 2000/02/17 22:49:17 aruna1
- * Added comment on mask
- *
- * Revision 1.3 2000/02/17 22:32:45 aruna1
- * Masking changes made due to swap of 16bit to 32 bit
- *
- * Revision 1.2 2000/02/06 07:48:01 rahulj
- * Year 2K copyright swat.
- *
- * Revision 1.1.1.1 1999/11/09 01:04:08 twl
- * Initial checkin
- *
- * Revision 1.3 1999/11/08 20:45:05 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- #if !defined(BITOPS_HPP)
- #define BITOPS_HPP
- #include <xercesc/util/XercesDefs.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- class XMLUTIL_EXPORT BitOps
- {
- public:
- // -----------------------------------------------------------------------
- // Public static methods
- // -----------------------------------------------------------------------
- static inline XMLCh swapBytes(const XMLUInt16 toSwap)
- {
- //The mask is required to overcome a compiler error on solaris
- return XMLCh(((toSwap >> 8) | (toSwap << 8)) & 0xFFFF);
- }
- static inline unsigned int swapBytes(const XMLUInt32 toSwap)
- {
- return
- (
- (toSwap >> 24)
- | (toSwap << 24)
- | ((toSwap & 0xFF00) << 8)
- | ((toSwap & 0xFF0000) >> 8)
- );
- }
- protected :
- // -----------------------------------------------------------------------
- // Unimplemented constructors and operators. (These ought to be private,
- // but that produces spurious compiler warnings
- // on some platforms.)
- // -----------------------------------------------------------------------
- BitOps();
- BitOps(const BitOps&);
- BitOps& operator=(const BitOps&);
- };
- XERCES_CPP_NAMESPACE_END
- #endif