#ifndef __XRDCKSCALCCRC32_HH__
#define __XRDCKSCALCCRC32_HH__
/******************************************************************************/
/* */
/* X r d C k s C a l c c r c 3 2 . h h */
/* */
/* (c) 2011 by the Board of Trustees of the Leland Stanford, Jr., University */
/* All Rights Reserved */
/* Produced by Andrew Hanushevsky for Stanford University under contract */
/* DE-AC02-76-SFO0515 with the Department of Energy */
/* */
/* This file is part of the XRootD software suite. */
/* */
/* XRootD is free software: you can redistribute it and/or modify it under */
/* the terms of the GNU Lesser General Public License as published by the */
/* Free Software Foundation, either version 3 of the License, or (at your */
/* option) any later version. */
/* */
/* XRootD is distributed in the hope that it will be useful, but WITHOUT */
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
/* License for more details. */
/* */
/* You should have received a copy of the GNU Lesser General Public License */
/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
/* COPYING (GPL license). If not, see . */
/* */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without */
/* specific prior written permission of the institution or contributor. */
/******************************************************************************/
#include
#include
#include
#include
#include "XrdCks/XrdCksCalc.hh"
#include "XrdSys/XrdSysPlatform.hh"
class XrdCksCalccrc32 : public XrdCksCalc
{
public:
char *Final() {char buff[sizeof(long long)];
long long tLcs = TotLen;
int i = 0;
if (tLcs)
{while(tLcs) {buff[i++] = tLcs & 0xff ; tLcs >>= 8;}
Update(buff, i);
}
TheResult = C32Result ^ CRC32_XOROT;
#ifndef Xrd_Big_Endian
TheResult = htonl(TheResult);
#endif
return (char *)&TheResult;
}
void Init() {C32Result = CRC32_XINIT; TotLen = 0;}
XrdCksCalc *New() {return (XrdCksCalc *)new XrdCksCalccrc32;}
void Update(const char *Buff, int BLen);
const char *Type(int &csSz) {csSz = sizeof(TheResult); return "crc32";}
XrdCksCalccrc32() {Init();}
virtual ~XrdCksCalccrc32() {}
private:
static const unsigned int CRC32_XINIT = 0;
static const unsigned int CRC32_XOROT = 0xffffffff;
static unsigned int crctable[256];
unsigned int C32Result;
unsigned int TheResult;
long long TotLen;
};
#endif