fsck: don't require an object struct for fsck_ident()

The only thing we do with the struct is pass its oid and type to
report(). We can just take those explicitly, which gives our callers
more flexibility.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

fsck.c

@@ -717,7 +717,9 @@ static int verify_headers(const void *data, unsigned long size,
 		FSCK_MSG_UNTERMINATED_HEADER, "unterminated header");
 }
 
-static int fsck_ident(const char **ident, struct object *obj, struct fsck_options *options)
+static int fsck_ident(const char **ident,
+		      const struct object_id *oid, enum object_type type,
+		      struct fsck_options *options)
 {
 	const char *p = *ident;
 	char *end;
@@ -727,36 +729,36 @@ static int fsck_ident(const char **ident, struct object *obj, struct fsck_option
 		(*ident)++;
 
 	if (*p == '<')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
+		return report(options, oid, type, FSCK_MSG_MISSING_NAME_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
 	p += strcspn(p, "<>\n");
 	if (*p == '>')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name");
+		return report(options, oid, type, FSCK_MSG_BAD_NAME, "invalid author/committer line - bad name");
 	if (*p != '<')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email");
+		return report(options, oid, type, FSCK_MSG_MISSING_EMAIL, "invalid author/committer line - missing email");
 	if (p[-1] != ' ')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
+		return report(options, oid, type, FSCK_MSG_MISSING_SPACE_BEFORE_EMAIL, "invalid author/committer line - missing space before email");
 	p++;
 	p += strcspn(p, "<>\n");
 	if (*p != '>')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email");
+		return report(options, oid, type, FSCK_MSG_BAD_EMAIL, "invalid author/committer line - bad email");
 	p++;
 	if (*p != ' ')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date");
+		return report(options, oid, type, FSCK_MSG_MISSING_SPACE_BEFORE_DATE, "invalid author/committer line - missing space before date");
 	p++;
 	if (*p == '0' && p[1] != ' ')
-		return report(options, &obj->oid, obj->type, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date");
+		return report(options, oid, type, FSCK_MSG_ZERO_PADDED_DATE, "invalid author/committer line - zero-padded date");
 	if (date_overflows(parse_timestamp(p, &end, 10)))
-		return report(options, &obj->oid, obj->type, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow");
+		return report(options, oid, type, FSCK_MSG_BAD_DATE_OVERFLOW, "invalid author/committer line - date causes integer overflow");
 	if ((end == p || *end != ' '))
-		return report(options, &obj->oid, obj->type, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date");
+		return report(options, oid, type, FSCK_MSG_BAD_DATE, "invalid author/committer line - bad date");
 	p = end + 1;
 	if ((*p != '+' && *p != '-') ||
 	    !isdigit(p[1]) ||
 	    !isdigit(p[2]) ||
 	    !isdigit(p[3]) ||
 	    !isdigit(p[4]) ||
 	    (p[5] != '\n'))
-		return report(options, &obj->oid, obj->type, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone");
+		return report(options, oid, type, FSCK_MSG_BAD_TIMEZONE, "invalid author/committer line - bad time zone");
 	p += 6;
 	return 0;
 }
@@ -792,7 +794,7 @@ static int fsck_commit(struct commit *commit, const char *buffer,
 	author_count = 0;
 	while (skip_prefix(buffer, "author ", &buffer)) {
 		author_count++;
-		err = fsck_ident(&buffer, &commit->object, options);
+		err = fsck_ident(&buffer, &commit->object.oid, commit->object.type, options);
 		if (err)
 			return err;
 	}
@@ -804,7 +806,7 @@ static int fsck_commit(struct commit *commit, const char *buffer,
 		return err;
 	if (!skip_prefix(buffer, "committer ", &buffer))
 		return report(options, &commit->object.oid, commit->object.type, FSCK_MSG_MISSING_COMMITTER, "invalid format - expected 'committer' line");
-	err = fsck_ident(&buffer, &commit->object, options);
+	err = fsck_ident(&buffer, &commit->object.oid, commit->object.type, options);
 	if (err)
 		return err;
 	if (memchr(buffer_begin, '\0', size)) {
@@ -882,7 +884,7 @@ static int fsck_tag(struct tag *tag, const char *buffer,
 			goto done;
 	}
 	else
-		ret = fsck_ident(&buffer, &tag->object, options);
+		ret = fsck_ident(&buffer, &tag->object.oid, tag->object.type, options);
 
 done:
 	strbuf_release(&sb);