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author | Ævar Arnfjörð Bjarmason <avarab@gmail.com> | 2022-12-20 15:39:56 +0300 |
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committer | Junio C Hamano <gitster@pobox.com> | 2022-12-26 04:21:44 +0300 |
commit | 4002ec3dcf0f89db46fbdf56549218c573a9c0f2 (patch) | |
tree | 61d41eac1a106f961dcd96a9d4363946fe4de309 /submodule.c | |
parent | f5a6be9d547700b7bd3018f1c0daf3d257cb2762 (diff) |
read-tree: add "--super-prefix" option, eliminate global
The "--super-prefix" option to "git" was initially added in [1] for
use with "ls-files"[2], and shortly thereafter "submodule--helper"[3]
and "grep"[4]. It wasn't until [5] that "read-tree" made use of it.
At the time [5] made sense, but since then we've made "ls-files"
recurse in-process in [6], "grep" in [7], and finally
"submodule--helper" in the preceding commits.
Let's also remove it from "read-tree", which allows us to remove the
option to "git" itself.
We can do this because the only remaining user of it is the submodule
API, which will now invoke "read-tree" with its new "--super-prefix"
option. It will only do so when the "submodule_move_head()" function
is called.
That "submodule_move_head()" function was then only invoked by
"read-tree" itself, but now rather than setting an environment
variable to pass "--super-prefix" between cmd_read_tree() we:
- Set a new "super_prefix" in "struct unpack_trees_options". The
"super_prefixed()" function in "unpack-trees.c" added in [5] will now
use this, rather than get_super_prefix() looking up the environment
variable we set earlier in the same process.
- Add the same field to the "struct checkout", which is only needed to
ferry the "super_prefix" in the "struct unpack_trees_options" all the
way down to the "entry.c" callers of "submodule_move_head()".
Those calls which used the super prefix all originated in
"cmd_read_tree()". The only other caller is the "unlink_entry()"
caller in "builtin/checkout.c", which now passes a "NULL".
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. e77aa336f11 (ls-files: optionally recurse into submodules, 2016-10-07)
3. 89c86265576 (submodule helper: support super prefix, 2016-12-08)
4. 0281e487fd9 (grep: optionally recurse into submodules, 2016-12-16)
5. 3d415425c7b (unpack-trees: support super-prefix option, 2017-01-17)
6. 188dce131fa (ls-files: use repository object, 2017-06-22)
7. f9ee2fcdfa0 (grep: recurse in-process using 'struct repository', 2017-08-02)
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'submodule.c')
-rw-r--r-- | submodule.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/submodule.c b/submodule.c index 46a0347319..d730b64b07 100644 --- a/submodule.c +++ b/submodule.c @@ -2054,14 +2054,6 @@ void submodule_unset_core_worktree(const struct submodule *sub) strbuf_release(&config_path); } -static const char *get_super_prefix_or_empty(void) -{ - const char *s = get_super_prefix(); - if (!s) - s = ""; - return s; -} - static int submodule_has_dirty_index(const struct submodule *sub) { struct child_process cp = CHILD_PROCESS_INIT; @@ -2080,7 +2072,7 @@ static int submodule_has_dirty_index(const struct submodule *sub) return finish_command(&cp); } -static void submodule_reset_index(const char *path) +static void submodule_reset_index(const char *path, const char *super_prefix) { struct child_process cp = CHILD_PROCESS_INIT; prepare_submodule_repo_env(&cp.env); @@ -2089,10 +2081,10 @@ static void submodule_reset_index(const char *path) cp.no_stdin = 1; cp.dir = path; - strvec_pushf(&cp.args, "--super-prefix=%s%s/", - get_super_prefix_or_empty(), path); /* TODO: determine if this might overwright untracked files */ strvec_pushl(&cp.args, "read-tree", "-u", "--reset", NULL); + strvec_pushf(&cp.args, "--super-prefix=%s%s/", + (super_prefix ? super_prefix : ""), path); strvec_push(&cp.args, empty_tree_oid_hex()); @@ -2105,10 +2097,9 @@ static void submodule_reset_index(const char *path) * For edge cases (a submodule coming into existence or removing a submodule) * pass NULL for old or new respectively. */ -int submodule_move_head(const char *path, - const char *old_head, - const char *new_head, - unsigned flags) +int submodule_move_head(const char *path, const char *super_prefix, + const char *old_head, const char *new_head, + unsigned flags) { int ret = 0; struct child_process cp = CHILD_PROCESS_INIT; @@ -2146,7 +2137,7 @@ int submodule_move_head(const char *path, if (old_head) { if (!submodule_uses_gitfile(path)) absorb_git_dir_into_superproject(path, - get_super_prefix()); + super_prefix); } else { struct strbuf gitdir = STRBUF_INIT; submodule_name_to_gitdir(&gitdir, the_repository, @@ -2155,7 +2146,7 @@ int submodule_move_head(const char *path, strbuf_release(&gitdir); /* make sure the index is clean as well */ - submodule_reset_index(path); + submodule_reset_index(path, super_prefix); } if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { @@ -2173,9 +2164,9 @@ int submodule_move_head(const char *path, cp.no_stdin = 1; cp.dir = path; - strvec_pushf(&cp.args, "--super-prefix=%s%s/", - get_super_prefix_or_empty(), path); strvec_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL); + strvec_pushf(&cp.args, "--super-prefix=%s%s/", + (super_prefix ? super_prefix : ""), path); if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN) strvec_push(&cp.args, "-n"); |