RZip.h

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// @(#)root/zip:$Id$
// Author: Sergey Linev   7 July 2014
 
/*************************************************************************
 * Copyright (C) 1995-2014, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
#include "Compression.h"
 
/**
 * These are definitions of various free functions for the C-style compression routines in ROOT.
 */
 
#ifndef ROOT_RZip
#define ROOT_RZip
 
namespace ROOT::Internal {
 
constexpr int kZipHeaderSize = 9; ///< Number of bytes of the ROOT compression block header
 
} // namespace ROOT::Internal
 
extern "C" unsigned long R__crc32(unsigned long crc, const unsigned char *buf, unsigned int len);
 
extern "C" unsigned long R__memcompress(char *tgt, unsigned long tgtsize, const char *src, unsigned long srcsize);
 
extern "C" void R__zipMultipleAlgorithm(int cxlevel, int *srcsize, const char *src, int *tgtsize, char *tgt, int *irep,
                                        ROOT::RCompressionSetting::EAlgorithm::EValues algorithm);
 
extern "C" ROOT::RCompressionSetting::EAlgorithm::EValues
R__getCompressionAlgorithm(const unsigned char *buf, size_t bufsize);
 
extern "C" void R__unzip(int *srcsize, const unsigned char *src, int *tgtsize, unsigned char *tgt, int *irep);
 
extern "C" int R__unzip_header(int *srcsize, const unsigned char *src, int *tgtsize);
 
enum { kMAXZIPBUF = 0xffffff }; // 16 MB
 
#endif