which would mean that corresponding tree - old or new - is empty.
As followup patches will show, that functionality was already needed in
several places of Git codebase, but there, we were preparing empty
tree_desc objects by hand, with some code duplication.
For handling sha1 = NULL case, let's reuse fill_tree_descriptor() which
returns just empty tree_desc in that case.
Signed-off-by: Kirill Smelkov <k...@mns.spb.ru>
---
tree-diff.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/tree-diff.c b/tree-diff.c
index f7b3ade..f438478 100644
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -287,14 +287,10 @@ int diff_tree_sha1(const unsigned char *old, const
unsigned char *new, const cha
unsigned long size1, size2;
int retval;
- tree1 = read_object_with_reference(old, tree_type, &size1, NULL);
- if (!tree1)
- die("unable to read source tree (%s)", sha1_to_hex(old));
- tree2 = read_object_with_reference(new, tree_type, &size2, NULL);
- if (!tree2)
- die("unable to read destination tree (%s)", sha1_to_hex(new));
- init_tree_desc(&t1, tree1, size1);
- init_tree_desc(&t2, tree2, size2);
+ tree1 = fill_tree_descriptor(&t1, old);
+ tree2 = fill_tree_descriptor(&t2, new);
+ size1 = t1.size;
+ size2 = t2.size;
retval = diff_tree(&t1, &t2, base, opt);
if (!*base && DIFF_OPT_TST(opt, FOLLOW_RENAMES) &&
diff_might_be_rename()) {
init_tree_desc(&t1, tree1, size1);
--
1.9.rc1.181.g641f458
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