[PATCH 23/32] commit-tree: require --narrow-base in narrow repo

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/commit-tree.c |   20 +++++++++++++++++++-
 1 files changed, 19 insertions(+), 1 deletions(-)

diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c
index 87f0591..0c71925 100644
--- a/builtin/commit-tree.c
+++ b/builtin/commit-tree.c
@@ -32,11 +32,29 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
 	unsigned char tree_sha1[20];
 	unsigned char commit_sha1[20];
 	struct strbuf buffer = STRBUF_INIT;
+	unsigned char narrow_base[20];
 
 	git_config(git_default_config, NULL);
 
 	if (argc < 2 || !strcmp(argv[1], "-h"))
 		usage(commit_tree_usage);
+
+	if (get_narrow_prefix()) {
+		unsigned char sha1[20];
+		unsigned long size;
+		void *buf;
+
+		if (prefixcmp(argv[1], "--narrow-base="))
+			die("--narrow-base required in narrow mode");
+		if (get_sha1(argv[1]+4, sha1))
+			die("Invalid SHA1");
+		buf = read_object_with_reference(sha1, tree_type, &size, narrow_base);
+		if (!buf)
+			die("Bad treeish %s", sha1_to_hex(sha1));
+		free(buf);
+		argv++;
+	}
+
 	if (get_sha1(argv[1], tree_sha1))
 		die("Not a valid object name %s", argv[1]);
 
@@ -56,7 +74,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
 	if (strbuf_read(&buffer, 0, 0) < 0)
 		die_errno("git commit-tree: failed to read");
 
-	if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) {
+	if (!commit_narrow_tree(buffer.buf, tree_sha1, narrow_base, parents, commit_sha1, NULL)) {
 		printf("%s\n", sha1_to_hex(commit_sha1));
 		return 0;
 	}
-- 
1.7.1.rc1.69.g24c2f7