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#ifndef PACKFILE_H
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#define PACKFILE_H
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/*
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* Generate the filename to be used for a pack file with checksum "sha1" and
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* extension "ext". The result is written into the strbuf "buf", overwriting
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* any existing contents. A pointer to buf->buf is returned as a convenience.
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*
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* Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx"
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*/
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extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext);
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/*
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* Return the name of the (local) packfile with the specified sha1 in
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* its name. The return value is a pointer to memory that is
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* overwritten each time this function is called.
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*/
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extern char *sha1_pack_name(const unsigned char *sha1);
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/*
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* Return the name of the (local) pack index file with the specified
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* sha1 in its name. The return value is a pointer to memory that is
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* overwritten each time this function is called.
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*/
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extern char *sha1_pack_index_name(const unsigned char *sha1);
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extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
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/* A hook to report invalid files in pack directory */
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#define PACKDIR_FILE_PACK 1
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#define PACKDIR_FILE_IDX 2
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#define PACKDIR_FILE_GARBAGE 4
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extern void (*report_garbage)(unsigned seen_bits, const char *path);
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extern void prepare_packed_git(void);
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extern void reprepare_packed_git(void);
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extern void install_packed_git(struct packed_git *pack);
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/*
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* Give a rough count of objects in the repository. This sacrifices accuracy
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* for speed.
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*/
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unsigned long approximate_object_count(void);
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extern void pack_report(void);
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/*
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* mmap the index file for the specified packfile (if it is not
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* already mmapped). Return 0 on success.
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*/
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extern int open_pack_index(struct packed_git *);
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/*
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* munmap the index file for the specified packfile (if it is
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* currently mmapped).
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*/
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extern void close_pack_index(struct packed_git *);
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extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
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extern void close_pack_windows(struct packed_git *);
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extern void close_all_packs(void);
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extern void unuse_pack(struct pack_window **);
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extern void clear_delta_base_cache(void);
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extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);
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extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
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extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
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extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
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extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
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extern void release_pack_memory(size_t);
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extern int open_packed_git(struct packed_git *p);
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/* global flag to enable extra checks when accessing packed objects */
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extern int do_check_packed_object_crc;
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extern int packed_object_info(struct packed_git *pack, off_t offset, struct object_info *);
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extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
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extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1);
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#endif
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