| #ifndef HASH_H |
| #define HASH_H |
| |
| #include "hash-ll.h" |
| #include "repository.h" |
| |
| #define the_hash_algo the_repository->hash_algo |
| |
| static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) |
| { |
| return hashcmp_algop(sha1, sha2, the_hash_algo); |
| } |
| |
| static inline int oidcmp(const struct object_id *oid1, const struct object_id *oid2) |
| { |
| const struct git_hash_algo *algop; |
| if (!oid1->algo) |
| algop = the_hash_algo; |
| else |
| algop = &hash_algos[oid1->algo]; |
| return hashcmp_algop(oid1->hash, oid2->hash, algop); |
| } |
| |
| static inline int hasheq(const unsigned char *sha1, const unsigned char *sha2) |
| { |
| return hasheq_algop(sha1, sha2, the_hash_algo); |
| } |
| |
| static inline int oideq(const struct object_id *oid1, const struct object_id *oid2) |
| { |
| const struct git_hash_algo *algop; |
| if (!oid1->algo) |
| algop = the_hash_algo; |
| else |
| algop = &hash_algos[oid1->algo]; |
| return hasheq_algop(oid1->hash, oid2->hash, algop); |
| } |
| |
| static inline int is_null_oid(const struct object_id *oid) |
| { |
| return oideq(oid, null_oid()); |
| } |
| |
| static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) |
| { |
| memcpy(sha_dst, sha_src, the_hash_algo->rawsz); |
| } |
| |
| /* Like oidcpy() but zero-pads the unused bytes in dst's hash array. */ |
| static inline void oidcpy_with_padding(struct object_id *dst, |
| const struct object_id *src) |
| { |
| size_t hashsz; |
| |
| if (!src->algo) |
| hashsz = the_hash_algo->rawsz; |
| else |
| hashsz = hash_algos[src->algo].rawsz; |
| |
| memcpy(dst->hash, src->hash, hashsz); |
| memset(dst->hash + hashsz, 0, GIT_MAX_RAWSZ - hashsz); |
| dst->algo = src->algo; |
| } |
| |
| static inline void hashclr(unsigned char *hash) |
| { |
| memset(hash, 0, the_hash_algo->rawsz); |
| } |
| |
| static inline void oidclr(struct object_id *oid) |
| { |
| memset(oid->hash, 0, GIT_MAX_RAWSZ); |
| oid->algo = hash_algo_by_ptr(the_hash_algo); |
| } |
| |
| static inline void oidread(struct object_id *oid, const unsigned char *hash) |
| { |
| memcpy(oid->hash, hash, the_hash_algo->rawsz); |
| oid->algo = hash_algo_by_ptr(the_hash_algo); |
| } |
| |
| static inline int is_empty_blob_sha1(const unsigned char *sha1) |
| { |
| return hasheq(sha1, the_hash_algo->empty_blob->hash); |
| } |
| |
| static inline int is_empty_blob_oid(const struct object_id *oid) |
| { |
| return oideq(oid, the_hash_algo->empty_blob); |
| } |
| |
| static inline int is_empty_tree_sha1(const unsigned char *sha1) |
| { |
| return hasheq(sha1, the_hash_algo->empty_tree->hash); |
| } |
| |
| static inline int is_empty_tree_oid(const struct object_id *oid) |
| { |
| return oideq(oid, the_hash_algo->empty_tree); |
| } |
| |
| #endif |