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| author | Kirill Smelkov <kirr@mns.spb.ru> | 2014-02-05 20:57:09 +0400 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2014-02-05 10:48:14 -0800 |
| commit | 791303284cb3ede61729e33112d6923df406161f (patch) | |
| tree | 399e30e25f0219a97767bf78a18f950d4dac2d1c /tree-diff.c | |
| parent | be961c292f1d36097afa1690df68cf90f655c855 (diff) | |
| download | git-791303284cb3ede61729e33112d6923df406161f.tar.gz | |
tree-diff: allow diff_tree_sha1 to accept NULL sha1
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 <kirr@mns.spb.ru>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'tree-diff.c')
| -rw-r--r-- | tree-diff.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/tree-diff.c b/tree-diff.c index 456660c7a2..b919983e96 100644 --- a/tree-diff.c +++ b/tree-diff.c @@ -294,14 +294,10 @@ 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); |