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-rw-r--r--builtin/reset.c87
1 files changed, 85 insertions, 2 deletions
diff --git a/builtin/reset.c b/builtin/reset.c
index 0ac0de7dc9..dcb79fb43a 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -148,7 +148,9 @@ static void update_index_from_diff(struct diff_queue_struct *q,
* If the file 1) corresponds to an existing index entry with
* skip-worktree set, or 2) does not exist in the index but is
* outside the sparse checkout definition, add a skip-worktree bit
- * to the new index entry.
+ * to the new index entry. Note that a sparse index will be expanded
+ * if this entry is outside the sparse cone - this is necessary
+ * to properly construct the reset sparse directory.
*/
pos = cache_name_pos(one->path, strlen(one->path));
if ((pos >= 0 && ce_skip_worktree(active_cache[pos])) ||
@@ -166,6 +168,82 @@ static void update_index_from_diff(struct diff_queue_struct *q,
}
}
+static int pathspec_needs_expanded_index(const struct pathspec *pathspec)
+{
+ unsigned int i, pos;
+ int res = 0;
+ char *skip_worktree_seen = NULL;
+
+ /*
+ * When using a magic pathspec, assume for the sake of simplicity that
+ * the index needs to be expanded to match all matchable files.
+ */
+ if (pathspec->magic)
+ return 1;
+
+ for (i = 0; i < pathspec->nr; i++) {
+ struct pathspec_item item = pathspec->items[i];
+
+ /*
+ * If the pathspec item has a wildcard, the index should be expanded
+ * if the pathspec has the possibility of matching a subset of entries inside
+ * of a sparse directory (but not the entire directory).
+ *
+ * If the pathspec item is a literal path, the index only needs to be expanded
+ * if a) the pathspec isn't in the sparse checkout cone (to make sure we don't
+ * expand for in-cone files) and b) it doesn't match any sparse directories
+ * (since we can reset whole sparse directories without expanding them).
+ */
+ if (item.nowildcard_len < item.len) {
+ /*
+ * Special case: if the pattern is a path inside the cone
+ * followed by only wildcards, the pattern cannot match
+ * partial sparse directories, so we don't expand the index.
+ */
+ if (path_in_cone_mode_sparse_checkout(item.original, &the_index) &&
+ strspn(item.original + item.nowildcard_len, "*") == item.len - item.nowildcard_len)
+ continue;
+
+ for (pos = 0; pos < active_nr; pos++) {
+ struct cache_entry *ce = active_cache[pos];
+
+ if (!S_ISSPARSEDIR(ce->ce_mode))
+ continue;
+
+ /*
+ * If the pre-wildcard length is longer than the sparse
+ * directory name and the sparse directory is the first
+ * component of the pathspec, need to expand the index.
+ */
+ if (item.nowildcard_len > ce_namelen(ce) &&
+ !strncmp(item.original, ce->name, ce_namelen(ce))) {
+ res = 1;
+ break;
+ }
+
+ /*
+ * If the pre-wildcard length is shorter than the sparse
+ * directory and the pathspec does not match the whole
+ * directory, need to expand the index.
+ */
+ if (!strncmp(item.original, ce->name, item.nowildcard_len) &&
+ wildmatch(item.original, ce->name, 0)) {
+ res = 1;
+ break;
+ }
+ }
+ } else if (!path_in_cone_mode_sparse_checkout(item.original, &the_index) &&
+ !matches_skip_worktree(pathspec, i, &skip_worktree_seen))
+ res = 1;
+
+ if (res > 0)
+ break;
+ }
+
+ free(skip_worktree_seen);
+ return res;
+}
+
static int read_from_tree(const struct pathspec *pathspec,
struct object_id *tree_oid,
int intent_to_add)
@@ -178,9 +256,14 @@ static int read_from_tree(const struct pathspec *pathspec,
opt.format_callback = update_index_from_diff;
opt.format_callback_data = &intent_to_add;
opt.flags.override_submodule_config = 1;
+ opt.flags.recursive = 1;
opt.repo = the_repository;
+ opt.change = diff_change;
+ opt.add_remove = diff_addremove;
+
+ if (pathspec->nr && the_index.sparse_index && pathspec_needs_expanded_index(pathspec))
+ ensure_full_index(&the_index);
- ensure_full_index(&the_index);
if (do_diff_cache(tree_oid, &opt))
return 1;
diffcore_std(&opt);