From 75691ea3458a9eb9e80f6bdc2cc7c9321a9ac4ab Mon Sep 17 00:00:00 2001
From: "brian m. carlson" <sandals@crustytoothpaste.net>
Date: Wed, 2 May 2018 00:25:44 +0000
Subject: Update struct index_state to use struct object_id

Adjust struct index_state to use struct object_id instead of unsigned
char [20].

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/cache.h b/cache.h
index e03a0d4..9ad1dd2 100644
--- a/cache.h
+++ b/cache.h
@@ -324,7 +324,7 @@ struct index_state {
 		 drop_cache_tree : 1;
 	struct hashmap name_hash;
 	struct hashmap dir_hash;
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct untracked_cache *untracked;
 	uint64_t fsmonitor_last_update;
 	struct ewah_bitmap *fsmonitor_dirty;
diff --git a/read-cache.c b/read-cache.c
index f47666b..9dbaeee 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1806,7 +1806,7 @@ int do_read_index(struct index_state *istate, const char *path, int must_exist)
 	if (verify_hdr(hdr, mmap_size) < 0)
 		goto unmap;
 
-	hashcpy(istate->sha1, (const unsigned char *)hdr + mmap_size - the_hash_algo->rawsz);
+	hashcpy(istate->oid.hash, (const unsigned char *)hdr + mmap_size - the_hash_algo->rawsz);
 	istate->version = ntohl(hdr->hdr_version);
 	istate->cache_nr = ntohl(hdr->hdr_entries);
 	istate->cache_alloc = alloc_nr(istate->cache_nr);
@@ -1902,10 +1902,10 @@ int read_index_from(struct index_state *istate, const char *path,
 	base_oid_hex = oid_to_hex(&split_index->base_oid);
 	base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_oid_hex);
 	ret = do_read_index(split_index->base, base_path, 1);
-	if (hashcmp(split_index->base_oid.hash, split_index->base->sha1))
+	if (oidcmp(&split_index->base_oid, &split_index->base->oid))
 		die("broken index, expect %s in %s, got %s",
 		    base_oid_hex, base_path,
-		    sha1_to_hex(split_index->base->sha1));
+		    oid_to_hex(&split_index->base->oid));
 
 	freshen_shared_index(base_path, 0);
 	merge_base_index(istate);
@@ -2194,7 +2194,7 @@ static int verify_index_from(const struct index_state *istate, const char *path)
 	if (n != the_hash_algo->rawsz)
 		goto out;
 
-	if (hashcmp(istate->sha1, hash))
+	if (hashcmp(istate->oid.hash, hash))
 		goto out;
 
 	close(fd);
@@ -2373,7 +2373,7 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
 			return -1;
 	}
 
-	if (ce_flush(&c, newfd, istate->sha1))
+	if (ce_flush(&c, newfd, istate->oid.hash))
 		return -1;
 	if (close_tempfile_gently(tempfile)) {
 		error(_("could not close '%s'"), tempfile->filename.buf);
@@ -2497,10 +2497,10 @@ static int write_shared_index(struct index_state *istate,
 		return ret;
 	}
 	ret = rename_tempfile(temp,
-			      git_path("sharedindex.%s", sha1_to_hex(si->base->sha1)));
+			      git_path("sharedindex.%s", oid_to_hex(&si->base->oid)));
 	if (!ret) {
-		hashcpy(si->base_oid.hash, si->base->sha1);
-		clean_shared_index_files(sha1_to_hex(si->base->sha1));
+		oidcpy(&si->base_oid, &si->base->oid);
+		clean_shared_index_files(oid_to_hex(&si->base->oid));
 	}
 
 	return ret;
diff --git a/t/helper/test-dump-split-index.c b/t/helper/test-dump-split-index.c
index 754e9bb..63c689d 100644
--- a/t/helper/test-dump-split-index.c
+++ b/t/helper/test-dump-split-index.c
@@ -14,7 +14,7 @@ int cmd__dump_split_index(int ac, const char **av)
 	int i;
 
 	do_read_index(&the_index, av[1], 1);
-	printf("own %s\n", sha1_to_hex(the_index.sha1));
+	printf("own %s\n", oid_to_hex(&the_index.oid));
 	si = the_index.split_index;
 	if (!si) {
 		printf("not a split index\n");
diff --git a/unpack-trees.c b/unpack-trees.c
index e737450..038ef7b 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1287,7 +1287,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
 	o->result.split_index = o->src_index->split_index;
 	if (o->result.split_index)
 		o->result.split_index->refcount++;
-	hashcpy(o->result.sha1, o->src_index->sha1);
+	oidcpy(&o->result.oid, &o->src_index->oid);
 	o->merge_size = len;
 	mark_all_ce_unused(o->src_index);
 
-- 
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