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git/csum-file.h
Jeff King 2f4af77699 csum-file: introduce hashfile_total()
We will need this helper function in a following commit
to give us total number of bytes fed to the hashfile so far.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-01-23 10:51:50 -08:00

65 lines
1.5 KiB
C

#ifndef CSUM_FILE_H
#define CSUM_FILE_H
#include "hash.h"
struct progress;
/* A SHA1-protected file */
struct hashfile {
int fd;
int check_fd;
unsigned int offset;
git_hash_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_hash_ctx ctx;
};
void hashfile_checkpoint(struct hashfile *, struct hashfile_checkpoint *);
int hashfile_truncate(struct hashfile *, struct hashfile_checkpoint *);
/* finalize_hashfile flags */
#define CSUM_CLOSE 1
#define CSUM_FSYNC 2
#define CSUM_HASH_IN_STREAM 4
struct hashfile *hashfd(int fd, const char *name);
struct hashfile *hashfd_check(const char *name);
struct hashfile *hashfd_throughput(int fd, const char *name, struct progress *tp);
int finalize_hashfile(struct hashfile *, unsigned char *, unsigned int);
void hashwrite(struct hashfile *, const void *, unsigned int);
void hashflush(struct hashfile *f);
void crc32_begin(struct hashfile *);
uint32_t crc32_end(struct hashfile *);
/*
* Returns the total number of bytes fed to the hashfile so far (including ones
* that have not been written out to the descriptor yet).
*/
static inline off_t hashfile_total(struct hashfile *f)
{
return f->total + f->offset;
}
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