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refs: introduce get_worktree_ref_store()

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files-backend at this point is still aware of the per-repo/worktree
separation in refs, so it can handle a linked worktree.

Some refs operations are known not working when current files-backend is
used in a linked worktree (e.g. reflog). Tests will be written when
refs_* functions start to be called with worktree backend to verify that
they work as expected.

Note: accessing a worktree of a submodule remains unaddressed. Perhaps
after get_worktrees() can access submodule (or rather a new function
get_submodule_worktrees(), that lists worktrees of a submodule), we can
update this function to work with submodules as well.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2017-04-24 17:01:22 +07:00 committed by Junio C Hamano
parent 0d8a814d8a
commit 17eff96b83
2 changed files with 32 additions and 0 deletions
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30
refs.c
View File

@ -10,6 +10,7 @@
#include "object.h"
#include "tag.h"
#include "submodule.h"
#include "worktree.h"
/*
* List of all available backends
@ -1486,6 +1487,9 @@ static struct ref_store *main_ref_store;
/* A hashmap of ref_stores, stored by submodule name: */
static struct hashmap submodule_ref_stores;
/* A hashmap of ref_stores, stored by worktree id: */
static struct hashmap worktree_ref_stores;
/*
* Look up a ref store by name. If that ref_store hasn't been
* registered yet, return NULL.
@ -1586,6 +1590,32 @@ struct ref_store *get_submodule_ref_store(const char *submodule)
return refs;
}
struct ref_store *get_worktree_ref_store(const struct worktree *wt)
{
struct ref_store *refs;
const char *id;
if (wt->is_current)
return get_main_ref_store();
id = wt->id ? wt->id : "/";
refs = lookup_ref_store_map(&worktree_ref_stores, id);
if (refs)
return refs;
if (wt->id)
refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
REF_STORE_ALL_CAPS);
else
refs = ref_store_init(get_git_common_dir(),
REF_STORE_ALL_CAPS);
if (refs)
register_ref_store_map(&worktree_ref_stores, "worktree",
refs, id);
return refs;
}
void base_ref_store_init(struct ref_store *refs,
const struct ref_storage_be *be)
{

2
refs.h
View File

@ -5,6 +5,7 @@ struct object_id;
struct ref_store;
struct strbuf;
struct string_list;
struct worktree;
/*
* Resolve a reference, recursively following symbolic refererences.
@ -655,5 +656,6 @@ struct ref_store *get_main_ref_store(void);
* submodule==NULL.
*/
struct ref_store *get_submodule_ref_store(const char *submodule);
struct ref_store *get_worktree_ref_store(const struct worktree *wt);
#endif /* REFS_H */