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sparse checkout: inhibit empty worktree 

The way sparse checkout works, users may empty their worktree
completely, because of non-matching sparse-checkout spec, or empty
spec. I believe this is not desired. This patch makes Git refuse to
produce such worktree.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2009-08-20 20:47:13 +07:00 committed by Junio C Hamano
parent d6b38f61c8
commit 9e1afb1675
2 changed files with 10 additions and 7 deletions
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10
t/t1009-read-tree-sparse-checkout.sh
View File

@ -55,20 +55,16 @@ test_expect_success 'read-tree --no-sparse-checkout with empty .git/info/sparse-
test -f sub/added
'
cat >expected.swt <<EOF
S init.t
S sub/added
EOF
test_expect_success 'read-tree with empty .git/info/sparse-checkout' '
git config core.sparsecheckout true &&
echo > .git/info/sparse-checkout &&
git read-tree -m -u HEAD &&
test_must_fail git read-tree -m -u HEAD &&
git ls-files --stage > result &&
test_cmp expected result &&
git ls-files -t > result &&
test_cmp expected.swt result &&
test ! -f init.t &&
test ! -f sub/added
test -f init.t &&
test -f sub/added
'
cat >expected.swt <<EOF

7
unpack-trees.c
View File

@ -498,6 +498,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
}
if (!o->skip_sparse_checkout) {
int empty_worktree = 1;
for (i = 0;i < o->result.cache_nr;i++) {
struct cache_entry *ce = o->result.cache[i];
@ -512,8 +513,14 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
*/
if (ce_skip_worktree(ce))
ce->ce_flags &= ~(CE_UPDATE | CE_REMOVE);
else
empty_worktree = 0;
}
if (o->result.cache_nr && empty_worktree) {
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done;
}
}
o->src_index = NULL;