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#ifndef CSUM_FILE_H
#define CSUM_FILE_H
struct progress;
/* A SHA1-protected file */
struct hashfile {
int fd;
int check_fd;
unsigned int offset;
git_SHA_CTX ctx;
off_t total;
struct progress *tp;
const char *name;
int do_crc;
uint32_t crc32;
unsigned char buffer[8192];
};
/* Checkpoint */
struct hashfile_checkpoint {
off_t offset;
git_SHA_CTX ctx;
};
extern void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *);
extern int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *);
/* hashclose flags */
#define CSUM_CLOSE 1
#define CSUM_FSYNC 2
extern struct hashfile *hashfd(int fd, const char *name);
extern struct hashfile *hashfd_check(const char *name);
extern struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp);
extern int hashclose(struct hashfile *, unsigned char *, unsigned int);
extern void hashwrite(struct hashfile *, const void *, unsigned int);
extern void hashflush(struct hashfile *f);
extern void crc32_begin(struct hashfile *);
extern uint32_t crc32_end(struct hashfile *);
static inline void hashwrite_u8(struct hashfile *f, uint8_t data)
{
hashwrite(f, &data, sizeof(data));
}
static inline void hashwrite_be32(struct hashfile *f, uint32_t data)
{
data = htonl(data);
hashwrite(f, &data, sizeof(data));
}
#endif
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