notes: convert write_notes_tree to object_id

diff --git a/cache.h b/cache.h
index a2ec8c0b55422f2b95a30d140cb2bfdf15f0721d..d5d78d6a51523df3040bab20e4ebae96156ad6fe 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -644,6 +644,15 @@ extern int write_locked_index(struct index_state *, struct lock_file *lock, unsi
 extern int discard_index(struct index_state *);
 extern void move_index_extensions(struct index_state *dst, struct index_state *src);
 extern int unmerged_index(const struct index_state *);
+
+/**
+ * Returns 1 if the index differs from HEAD, 0 otherwise. When on an unborn
+ * branch, returns 1 if there are entries in the index, 0 otherwise. If an
+ * strbuf is provided, the space-separated list of files that differ will be
+ * appended to it.
+ */
+extern int index_has_changes(struct strbuf *sb);
+
 extern int verify_path(const char *path);
 extern int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
 extern int index_dir_exists(struct index_state *istate, const char *name, int namelen);
@@ -1020,7 +1029,7 @@ static inline void hashclr(unsigned char *hash)
 
 static inline void oidclr(struct object_id *oid)
 {
-       hashclr(oid->hash);
+       memset(oid->hash, 0, GIT_MAX_RAWSZ);
 }
 
 
@@ -1038,8 +1047,6 @@ extern const struct object_id empty_tree_oid;
        "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
        "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
 extern const struct object_id empty_blob_oid;
-#define EMPTY_BLOB_SHA1_BIN (empty_blob_oid.hash)
-
 
 static inline int is_empty_blob_sha1(const unsigned char *sha1)
 {
@@ -1229,10 +1236,16 @@ static inline const unsigned char *lookup_replace_object(const unsigned char *sh
 
 /* Read and unpack a sha1 file into memory, write memory to a sha1 file */
 extern int sha1_object_info(const unsigned char *, unsigned long *);
-extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
+
+extern int hash_object_file(const void *buf, unsigned long len,
+                           const char *type, struct object_id *oid);
+
 extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
 extern int hash_sha1_file_literally(const void *buf, unsigned long len, const char *type, struct object_id *oid, unsigned flags);
-extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
+
+extern int pretend_object_file(void *, unsigned long, enum object_type,
+                              struct object_id *oid);
+
 extern int force_object_loose(const unsigned char *sha1, time_t mtime);
 extern int git_open_cloexec(const char *name, int flags);
 #define git_open(name) git_open_cloexec(name, O_RDONLY)