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mv: from in-cone to out-of-cone

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Originally, moving an in-cone <source> to an out-of-cone <destination>
was not possible, mainly because such <destination> is a directory that
is not present in the working tree.

Change the behavior so that we can move an in-cone <source> to
out-of-cone <destination> when --sparse is supplied.

Notice that <destination> can also be an out-of-cone file path, rather
than a directory.

Such <source> can be either clean or dirty, and moving it results in
different behaviors:

A clean move should move <source> to <destination> in the index (do
*not* create <destination> in the worktree), then delete <source> from
the worktree.

A dirty move should move the <source> to the <destination>, both in the
working tree and the index, but should *not* remove the resulted path
from the working tree and should *not* turn on its CE_SKIP_WORKTREE bit.

Optional reading
================

We are strict about cone mode when <destination> is a file path.
The reason is that some of the previous tests that use no-cone mode in
t7002 are keep breaking, mainly because the `dst_mode = SPARSE;` line
added in this patch.

Most features developed in both "from-out-to-in" and "from-in-to-out"
only care about cone mode situation, as no-cone mode is becoming
irrelevant. And because assigning `SPARSE` to `dst_mode` when the
repo is in no-cone mode causes miscellaneous bugs, we should just leave
this new functionality to be exclusive cone mode and save some time.

Helped-by: Derrick Stolee <derrickstolee@github.com>
Helped-by: Victoria Dye <vdye@github.com>
Signed-off-by: Shaoxuan Yuan <shaoxuan.yuan02@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Shaoxuan Yuan 2022-08-09 20:09:07 +08:00 committed by Junio C Hamano
parent 9284c3ce26
commit 5784db1b22
2 changed files with 65 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
builtin/mv.c
View File

@ -171,12 +171,13 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
};
const char **source, **destination, **dest_path, **submodule_gitfile;
const char *dst_w_slash;
enum update_mode *modes;
enum update_mode *modes, dst_mode = 0;
struct stat st;
struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
struct lock_file lock_file = LOCK_INIT;
struct cache_entry *ce;
struct string_list only_match_skip_worktree = STRING_LIST_INIT_NODUP;
struct string_list dirty_paths = STRING_LIST_INIT_NODUP;
git_config(git_default_config, NULL);
@ -213,10 +214,21 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
if (!path_in_sparse_checkout(dst_w_slash, &the_index) &&
empty_dir_has_sparse_contents(dst_w_slash)) {
destination = internal_prefix_pathspec(dst_w_slash, argv, argc, DUP_BASENAME);
dst_mode = SKIP_WORKTREE_DIR;
} else if (argc != 1) {
die(_("destination '%s' is not a directory"), dest_path[0]);
} else {
destination = dest_path;
/*
* <destination> is a file outside of sparse-checkout
* cone. Insist on cone mode here for backward
* compatibility. We don't want dst_mode to be assigned
* for a file when the repo is using no-cone mode (which
* is deprecated at this point) sparse-checkout. As
* SPARSE here is only considering cone-mode situation.
*/
if (!path_in_cone_mode_sparse_checkout(destination[0], &the_index))
dst_mode = SPARSE;
}
}
if (dst_w_slash != dest_path[0]) {
@ -410,6 +422,7 @@ remove_entry:
const char *src = source[i], *dst = destination[i];
enum update_mode mode = modes[i];
int pos;
int sparse_and_dirty = 0;
struct checkout state = CHECKOUT_INIT;
state.istate = &the_index;
@ -420,6 +433,7 @@ remove_entry:
if (show_only)
continue;
if (!(mode & (INDEX | SPARSE | SKIP_WORKTREE_DIR)) &&
!(dst_mode & (SKIP_WORKTREE_DIR | SPARSE)) &&
rename(src, dst) < 0) {
if (ignore_errors)
continue;
@ -439,17 +453,55 @@ remove_entry:
pos = cache_name_pos(src, strlen(src));
assert(pos >= 0);
if (!(mode & SPARSE) && !lstat(src, &st))
sparse_and_dirty = ce_modified(active_cache[pos], &st, 0);
rename_cache_entry_at(pos, dst);
if ((mode & SPARSE) &&
(path_in_sparse_checkout(dst, &the_index))) {
int dst_pos;
if (ignore_sparse &&
core_apply_sparse_checkout &&
core_sparse_checkout_cone) {
/*
* NEEDSWORK: we are *not* paying attention to
* "out-to-out" move (<source> is out-of-cone and
* <destination> is out-of-cone) at this point. It
* should be added in a future patch.
*/
if ((mode & SPARSE) &&
path_in_sparse_checkout(dst, &the_index)) {
/* from out-of-cone to in-cone */
int dst_pos = cache_name_pos(dst, strlen(dst));
struct cache_entry *dst_ce = active_cache[dst_pos];
dst_pos = cache_name_pos(dst, strlen(dst));
active_cache[dst_pos]->ce_flags &= ~CE_SKIP_WORKTREE;
dst_ce->ce_flags &= ~CE_SKIP_WORKTREE;
if (checkout_entry(active_cache[dst_pos], &state, NULL, NULL))
die(_("cannot checkout %s"), active_cache[dst_pos]->name);
if (checkout_entry(dst_ce, &state, NULL, NULL))
die(_("cannot checkout %s"), dst_ce->name);
} else if ((dst_mode & (SKIP_WORKTREE_DIR | SPARSE)) &&
!(mode & SPARSE) &&
!path_in_sparse_checkout(dst, &the_index)) {
/* from in-cone to out-of-cone */
int dst_pos = cache_name_pos(dst, strlen(dst));
struct cache_entry *dst_ce = active_cache[dst_pos];
/*
* if src is clean, it will suffice to remove it
*/
if (!sparse_and_dirty) {
dst_ce->ce_flags |= CE_SKIP_WORKTREE;
unlink_or_warn(src);
} else {
/*
* if src is dirty, move it to the
* destination and create leading
* dirs if necessary
*/
char *dst_dup = xstrdup(dst);
string_list_append(&dirty_paths, dst);
safe_create_leading_directories(dst_dup);
FREE_AND_NULL(dst_dup);
rename(src, dst);
}
}
}
}
@ -461,6 +513,7 @@ remove_entry:
die(_("Unable to write new index file"));
string_list_clear(&src_for_dst, 0);
string_list_clear(&dirty_paths, 0);
UNLEAK(source);
UNLEAK(dest_path);
free(submodule_gitfile);

8
t/t7002-mv-sparse-checkout.sh
View File

@ -290,7 +290,7 @@ test_expect_success 'move sparse file to existing destination with --force and -
test_cmp expect sub/file1
'
test_expect_failure 'move clean path from in-cone to out-of-cone' '
test_expect_success 'move clean path from in-cone to out-of-cone' '
test_when_finished "cleanup_sparse_checkout" &&
setup_sparse_checkout &&
@ -419,7 +419,7 @@ test_expect_failure 'move directory with one of the files overwrite' '
test_cmp expect actual
'
test_expect_failure 'move dirty path from in-cone to out-of-cone' '
test_expect_success 'move dirty path from in-cone to out-of-cone' '
test_when_finished "cleanup_sparse_checkout" &&
setup_sparse_checkout &&
echo "modified" >>sub/d &&
@ -439,7 +439,7 @@ test_expect_failure 'move dirty path from in-cone to out-of-cone' '
grep "H folder1/d" actual
'
test_expect_failure 'move dir from in-cone to out-of-cone' '
test_expect_success 'move dir from in-cone to out-of-cone' '
test_when_finished "cleanup_sparse_checkout" &&
setup_sparse_checkout &&
@ -458,7 +458,7 @@ test_expect_failure 'move dir from in-cone to out-of-cone' '
grep "S folder1/dir/e" actual
'
test_expect_failure 'move partially-dirty dir from in-cone to out-of-cone' '
test_expect_success 'move partially-dirty dir from in-cone to out-of-cone' '
test_when_finished "cleanup_sparse_checkout" &&
setup_sparse_checkout &&
touch sub/dir/e2 sub/dir/e3 &&