Merge branch 'bc/object-id'

"uchar [40]" to "struct object_id" conversion continues.

* bc/object-id:
  wt-status: convert to struct object_id
  builtin/merge-base: convert to struct object_id
  Convert object iteration callbacks to struct object_id
  sha1_file: introduce an nth_packed_object_oid function
  refs: simplify parsing of reflog entries
  refs: convert each_reflog_ent_fn to struct object_id
  reflog-walk: convert struct reflog_info to struct object_id
  builtin/replace: convert to struct object_id
  Convert remaining callers of resolve_refdup to object_id
  builtin/merge: convert to struct object_id
  builtin/clone: convert to struct object_id
  builtin/branch: convert to struct object_id
  builtin/grep: convert to struct object_id
  builtin/fmt-merge-message: convert to struct object_id
  builtin/fast-export: convert to struct object_id
  builtin/describe: convert to struct object_id
  builtin/diff-tree: convert to struct object_id
  builtin/commit: convert to struct object_id
  hex: introduce parse_oid_hex

1 files changed, 31 insertions, 32 deletions

diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 8ce00480cd..326f88b657 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -7,46 +7,44 @@
 
 static struct rev_info log_tree_opt;
 
-static int diff_tree_commit_sha1(const unsigned char *sha1)
+static int diff_tree_commit_sha1(const struct object_id *oid)
 {
-	struct commit *commit = lookup_commit_reference(sha1);
+	struct commit *commit = lookup_commit_reference(oid->hash);
 	if (!commit)
 		return -1;
 	return log_tree_commit(&log_tree_opt, commit);
 }
 
 /* Diff one or more commits. */
-static int stdin_diff_commit(struct commit *commit, char *line, int len)
+static int stdin_diff_commit(struct commit *commit, const char *p)
 {
-	unsigned char sha1[20];
-	if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
-		/* Graft the fake parents locally to the commit */
-		int pos = 41;
-		struct commit_list **pptr;
-
-		/* Free the real parent list */
-		free_commit_list(commit->parents);
-		commit->parents = NULL;
-		pptr = &(commit->parents);
-		while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
-			struct commit *parent = lookup_commit(sha1);
-			if (parent) {
-				pptr = &commit_list_insert(parent, pptr)->next;
-			}
-			pos += 41;
+	struct object_id oid;
+	struct commit_list **pptr = NULL;
+
+	/* Graft the fake parents locally to the commit */
+	while (isspace(*p++) && !parse_oid_hex(p, &oid, &p)) {
+		struct commit *parent = lookup_commit(oid.hash);
+		if (!pptr) {
+			/* Free the real parent list */
+			free_commit_list(commit->parents);
+			commit->parents = NULL;
+			pptr = &(commit->parents);
+		}
+		if (parent) {
+			pptr = &commit_list_insert(parent, pptr)->next;
 		}
 	}
 	return log_tree_commit(&log_tree_opt, commit);
 }
 
 /* Diff two trees. */
-static int stdin_diff_trees(struct tree *tree1, char *line, int len)
+static int stdin_diff_trees(struct tree *tree1, const char *p)
 {
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct tree *tree2;
-	if (len != 82 || !isspace(line[40]) || get_sha1_hex(line + 41, sha1))
+	if (!isspace(*p++) || parse_oid_hex(p, &oid, &p) || *p)
 		return error("Need exactly two trees, separated by a space");
-	tree2 = lookup_tree(sha1);
+	tree2 = lookup_tree(oid.hash);
 	if (!tree2 || parse_tree(tree2))
 		return -1;
 	printf("%s %s\n", oid_to_hex(&tree1->object.oid),
@@ -60,23 +58,24 @@ static int stdin_diff_trees(struct tree *tree1, char *line, int len)
 static int diff_tree_stdin(char *line)
 {
 	int len = strlen(line);
-	unsigned char sha1[20];
+	struct object_id oid;
 	struct object *obj;
+	const char *p;
 
 	if (!len || line[len-1] != '\n')
 		return -1;
 	line[len-1] = 0;
-	if (get_sha1_hex(line, sha1))
+	if (parse_oid_hex(line, &oid, &p))
 		return -1;
-	obj = parse_object(sha1);
+	obj = parse_object(oid.hash);
 	if (!obj)
 		return -1;
 	if (obj->type == OBJ_COMMIT)
-		return stdin_diff_commit((struct commit *)obj, line, len);
+		return stdin_diff_commit((struct commit *)obj, p);
 	if (obj->type == OBJ_TREE)
-		return stdin_diff_trees((struct tree *)obj, line, len);
+		return stdin_diff_trees((struct tree *)obj, p);
 	error("Object %s is a %s, not a commit or tree",
-	      sha1_to_hex(sha1), typename(obj->type));
+	      oid_to_hex(&oid), typename(obj->type));
 	return -1;
 }
 
@@ -141,7 +140,7 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
 		break;
 	case 1:
 		tree1 = opt->pending.objects[0].item;
-		diff_tree_commit_sha1(tree1->oid.hash);
+		diff_tree_commit_sha1(&tree1->oid);
 		break;
 	case 2:
 		tree1 = opt->pending.objects[0].item;
@@ -164,9 +163,9 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
 			opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
 					       DIFF_SETUP_USE_CACHE);
 		while (fgets(line, sizeof(line), stdin)) {
-			unsigned char sha1[20];
+			struct object_id oid;
 
-			if (get_sha1_hex(line, sha1)) {
+			if (get_oid_hex(line, &oid)) {
 				fputs(line, stdout);
 				fflush(stdout);
 			}