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sparse-checkout: add sanity-checks on initial sparsity state 

Most sparse-checkout subcommands (list, add, reapply) only make sense
when already in a sparse state.  Add a quick check that will error out
early if this is not the case.

Also document with a comment why we do not exit early in `disable` even
when core.sparseCheckout starts as false.

Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Victoria Dye <vdye@github.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren 2021-12-14 04:09:05 +00:00 committed by Junio C Hamano
parent 0b624e039c
commit 45c5e47048
2 changed files with 29 additions and 1 deletions
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20
builtin/sparse-checkout.c
View File

@ -56,6 +56,9 @@ static int sparse_checkout_list(int argc, const char **argv)
char *sparse_filename;
int res;
if (!core_apply_sparse_checkout)
die(_("this worktree is not sparse"));
argc = parse_options(argc, argv, NULL,
builtin_sparse_checkout_list_options,
builtin_sparse_checkout_list_usage, 0);
@ -671,6 +674,9 @@ static int sparse_checkout_add(int argc, const char **argv, const char *prefix)
OPT_END(),
};
if (!core_apply_sparse_checkout)
die(_("no sparse-checkout to add to"));
repo_read_index(the_repository);
argc = parse_options(argc, argv, prefix,
@ -719,6 +725,9 @@ static int sparse_checkout_reapply(int argc, const char **argv)
OPT_END(),
};
if (!core_apply_sparse_checkout)
die(_("must be in a sparse-checkout to reapply sparsity patterns"));
argc = parse_options(argc, argv, NULL,
builtin_sparse_checkout_reapply_options,
builtin_sparse_checkout_reapply_usage, 0);
@ -740,6 +749,17 @@ static int sparse_checkout_disable(int argc, const char **argv)
struct pattern_list pl;
struct strbuf match_all = STRBUF_INIT;
/*
* We do not exit early if !core_apply_sparse_checkout; due to the
* ability for users to manually muck things up between
* direct editing of .git/info/sparse-checkout
* running read-tree -m u HEAD or update-index --skip-worktree
* direct toggling of config options
* users might end up with an index with SKIP_WORKTREE bit set on
* some files and not know how to undo it. So, here we just
* forcibly return to a dense checkout regardless of initial state.
*/
argc = parse_options(argc, argv, NULL,
builtin_sparse_checkout_disable_options,
builtin_sparse_checkout_disable_usage, 0);

10
t/t1091-sparse-checkout-builtin.sh
View File

@ -41,7 +41,15 @@ test_expect_success 'setup' '
)
'
test_expect_success 'git sparse-checkout list (empty)' '
test_expect_success 'git sparse-checkout list (not sparse)' '
test_must_fail git -C repo sparse-checkout list >list 2>err &&
test_must_be_empty list &&
test_i18ngrep "this worktree is not sparse" err
'
test_expect_success 'git sparse-checkout list (not sparse)' '
git -C repo sparse-checkout set &&
rm repo/.git/info/sparse-checkout &&
git -C repo sparse-checkout list >list 2>err &&
test_must_be_empty list &&
test_i18ngrep "this worktree is not sparse (sparse-checkout file may not exist)" err