From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
It is difficult, but possible, to get into a state where we intend to
add a directory that is outside of the sparse-checkout definition. Add a
test to t1092-sparse-checkout-compatibility.sh that demonstrates this
using a combination of 'git reset --mixed' and 'git checkout --orphan'.
This test failed before because the output of 'git status
--porcelain=v2' would not match on the lines for folder1/:
* The sparse-checkout repo (with a full index) would output each path
name that is intended to be added.
* The sparse-index repo would only output that "folder1/" is staged for
addition.
The status should report the full list of files to be added, and so this
sparse-directory entry should be expanded to a full list when reaching
it inside the wt_status_collect_changes_initial() method. Use
read_tree_at() to assist.
Somehow, this loop over the cache entries was not guarded by
ensure_full_index() as intended.
Reviewed-by: Elijah Newren <newren@xxxxxxxxx>
Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
t/t1092-sparse-checkout-compatibility.sh | 33 +++++++++++++++
wt-status.c | 51 ++++++++++++++++++++++++
2 files changed, 84 insertions(+)
diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index 751f397cc7f..2394c36d881 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -524,4 +524,37 @@ test_expect_success 'sparse-index is not expanded' '
test_region ! index ensure_full_index trace2.txt
'
+test_expect_success 'reset mixed and checkout orphan' '
+ init_repos &&
+
+ test_all_match git checkout rename-out-to-in &&
+
+ # Sparse checkouts do not agree with full checkouts about
+ # how to report a directory/file conflict during a reset.
+ # This command would fail with test_all_match because the
+ # full checkout reports "T folder1/0/1" while a sparse
+ # checkout reports "D folder1/0/1". This matches because
+ # the sparse checkouts skip "adding" the other side of
+ # the conflict.
+ test_sparse_match git reset --mixed HEAD~1 &&
+ test_sparse_match test-tool read-cache --table --expand &&
+ test_sparse_match git status --porcelain=v2 &&
+
+ # At this point, sparse-checkouts behave differently
+ # from the full-checkout.
+ test_sparse_match git checkout --orphan new-branch &&
+ test_sparse_match test-tool read-cache --table --expand &&
+ test_sparse_match git status --porcelain=v2
+'
+
+test_expect_success 'add everything with deep new file' '
+ init_repos &&
+
+ run_on_sparse git sparse-checkout set deep/deeper1/deepest &&
+
+ run_on_all touch deep/deeper1/x &&
+ test_all_match git add . &&
+ test_all_match git status --porcelain=v2
+'
+
test_done
diff --git a/wt-status.c b/wt-status.c
index 96db3e74962..0317baef87e 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -657,6 +657,36 @@ static void wt_status_collect_changes_index(struct wt_status *s)
clear_pathspec(&rev.prune_data);
}
+static int add_file_to_list(const struct object_id *oid,
+ struct strbuf *base, const char *path,
+ unsigned int mode, void *context)
+{
+ struct string_list_item *it;
+ struct wt_status_change_data *d;
+ struct wt_status *s = context;
+ struct strbuf full_name = STRBUF_INIT;
+
+ if (S_ISDIR(mode))
+ return READ_TREE_RECURSIVE;
+
+ strbuf_add(&full_name, base->buf, base->len);
+ strbuf_addstr(&full_name, path);
+ it = string_list_insert(&s->change, full_name.buf);
+ d = it->util;
+ if (!d) {
+ CALLOC_ARRAY(d, 1);
+ it->util = d;
+ }
+
+ d->index_status = DIFF_STATUS_ADDED;
+ /* Leave {mode,oid}_head zero for adds. */
+ d->mode_index = mode;
+ oidcpy(&d->oid_index, oid);
+ s->committable = 1;
+ strbuf_release(&full_name);
+ return 0;
+}
+
static void wt_status_collect_changes_initial(struct wt_status *s)
{
struct index_state *istate = s->repo->index;
@@ -671,6 +701,27 @@ static void wt_status_collect_changes_initial(struct wt_status *s)
continue;
if (ce_intent_to_add(ce))
continue;
+ if (S_ISSPARSEDIR(ce->ce_mode)) {
+ /*
+ * This is a sparse directory entry, so we want to collect all
+ * of the added files within the tree. This requires recursively
+ * expanding the trees to find the elements that are new in this
+ * tree and marking them with DIFF_STATUS_ADDED.
+ */
+ struct strbuf base = STRBUF_INIT;
+ struct pathspec ps = { 0 };
+ struct tree *tree = lookup_tree(istate->repo, &ce->oid);
+
+ ps.recursive = 1;
+ ps.has_wildcard = 1;
+ ps.max_depth = -1;
+
+ strbuf_add(&base, ce->name, ce->ce_namelen);
+ read_tree_at(istate->repo, tree, &base, &ps,
+ add_file_to_list, s);
+ continue;
+ }
+
it = string_list_insert(&s->change, ce->name);
d = it->util;
if (!d) {
--
gitgitgadget
