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#ifndef GZIP_H
#define GZIP_H
#include <stdint.h>
#include <sys/types.h>
#include <stdio.h>
#include "portable_endian.h"
// current we are only interested in xtra-fields
// of the bgzip file-format, which has 6 bytes in the extra field
#define MAX_XTRA_BYTES 6
// only contains header fields relevant for this program
typedef struct {
off_t offsetInFile;
size_t lenTotal;
uint8_t compressionMethod;
uint16_t lenExtraBytes;
char extraBytes[MAX_XTRA_BYTES];
} gzip_Header;
/// Always use this function when generating a new gzip_Header.
gzip_Header gzip_Header_default();
int gzip_readHeader(FILE* f, gzip_Header* header);
#endif // GZIP_H
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