SherpackUtilities.h

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#ifndef SherpackUtilities_h
#define SherpackUtilities_h

/* Based on the zlib example code zpipe.c
 * Modified for the use of unzipping Sherpacks
 * Sebastian Thüer, Markus Merschmeyer
 * III. Phys. Inst. A, RWTH Aachen University
 * version 1.0, 1st August 2012
*/

#include <cstdlib>
#include <cstdio>
#include <string>
#include <cstring>
#include <cassert>
#include <zlib.h>
/* This is for mkdir(); this may need to be changed for some platforms. */
#include <sys/stat.h>  /* For mkdir() */
#include <openssl/md5.h>
#include <fcntl.h>



#define SET_BINARY_MODE(file)

#define CHUNK 16384


namespace spu {

// functions for inflating (and deflating) -> (un)zipping the Sherpacks (taken from zlib and zpipe.c)
int def(FILE*, FILE*, int);
int inf(FILE*, FILE*);
void zerr(int);
int Unzip(std::string, std::string );

// functions for untaring Sherpacks, based on
// http://www.opensource.apple.com/source/libarchive/libarchive-23/libarchive/contrib/untar.c
// ...but heavily modified for long path names...
/* Parse an octal number, ignoring leading and trailing nonsense. */
int parseoct(const char*, size_t);
/* Returns true if this is 512 zero bytes. */
int is_end_of_archive(const char*);
/* Create a directory, including parent directories as necessary. */
void create_dir(char*, int);
/* Create a file, including parent directory as necessary. */
FILE* create_file(char*, int);
/* Verify the tar checksum. */
int verify_checksum(const char*);
/* Extract a tar archive. */
void Untar(FILE*, const char*);

// function for calculating the MD5 checksum of a file
void md5_File(std::string, char*);


} // End namespace spu
#endif