mirror of
https://github.com/git/git.git
synced 2024-11-08 14:09:26 +01:00
8a676bdc5c
The "hash-ll.h" header was introduced via d1cbe1e6d8 (hash-ll.h: split out of hash.h to remove dependency on repository.h, 2023-04-22) to make explicit the split between hash-related functions that rely on the global `the_repository`, and those that don't. This split is no longer necessary now that we we have removed the reliance on `the_repository`. Merge "hash-ll.h" back into "hash.h". This causes some code units to not include "repository.h" anymore, which requires us to add some forward declarations. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
#ifndef CHUNK_FORMAT_H
|
|
#define CHUNK_FORMAT_H
|
|
|
|
#include "hash.h"
|
|
|
|
struct hashfile;
|
|
struct chunkfile;
|
|
|
|
#define CHUNK_TOC_ENTRY_SIZE (sizeof(uint32_t) + sizeof(uint64_t))
|
|
|
|
/*
|
|
* Initialize a 'struct chunkfile' for writing _or_ reading a file
|
|
* with the chunk format.
|
|
*
|
|
* If writing a file, supply a non-NULL 'struct hashfile *' that will
|
|
* be used to write.
|
|
*
|
|
* If reading a file, use a NULL 'struct hashfile *' and then call
|
|
* read_table_of_contents(). Supply the memory-mapped data to the
|
|
* pair_chunk() or read_chunk() methods, as appropriate.
|
|
*
|
|
* DO NOT MIX THESE MODES. Use different 'struct chunkfile' instances
|
|
* for reading and writing.
|
|
*/
|
|
struct chunkfile *init_chunkfile(struct hashfile *f);
|
|
void free_chunkfile(struct chunkfile *cf);
|
|
int get_num_chunks(struct chunkfile *cf);
|
|
typedef int (*chunk_write_fn)(struct hashfile *f, void *data);
|
|
void add_chunk(struct chunkfile *cf,
|
|
uint32_t id,
|
|
size_t size,
|
|
chunk_write_fn fn);
|
|
int write_chunkfile(struct chunkfile *cf, void *data);
|
|
|
|
int read_table_of_contents(struct chunkfile *cf,
|
|
const unsigned char *mfile,
|
|
size_t mfile_size,
|
|
uint64_t toc_offset,
|
|
int toc_length,
|
|
unsigned expected_alignment);
|
|
|
|
#define CHUNK_NOT_FOUND (-2)
|
|
|
|
/*
|
|
* Find 'chunk_id' in the given chunkfile and assign the
|
|
* given pointer to the position in the mmap'd file where
|
|
* that chunk begins. Likewise the "size" parameter is filled
|
|
* with the size of the chunk.
|
|
*
|
|
* Returns CHUNK_NOT_FOUND if the chunk does not exist.
|
|
*/
|
|
int pair_chunk(struct chunkfile *cf,
|
|
uint32_t chunk_id,
|
|
const unsigned char **p,
|
|
size_t *size);
|
|
|
|
typedef int (*chunk_read_fn)(const unsigned char *chunk_start,
|
|
size_t chunk_size, void *data);
|
|
/*
|
|
* Find 'chunk_id' in the given chunkfile and call the
|
|
* given chunk_read_fn method with the information for
|
|
* that chunk.
|
|
*
|
|
* Returns CHUNK_NOT_FOUND if the chunk does not exist.
|
|
*/
|
|
int read_chunk(struct chunkfile *cf,
|
|
uint32_t chunk_id,
|
|
chunk_read_fn fn,
|
|
void *data);
|
|
|
|
uint8_t oid_version(const struct git_hash_algo *algop);
|
|
|
|
#endif
|