[PATCH v2 09/21] refs: add method to rename refs
Signed-off-by: David Turner <dturner@twopensource.com>
---
refs.c | 37 +++++++++++++++++++++----------------
refs/files-backend.c | 4 +++-
refs/refs-internal.h | 9 +++++++++
3 files changed, 33 insertions(+), 17 deletions(-)
diff --git a/refs.c b/refs.c
index af5f7a7..0b29b25 100644
--- a/refs.c
+++ b/refs.c
@@ -1089,22 +1089,6 @@ const char *find_descendant_ref(const char *dirname,
return NULL;
}
-int rename_ref_available(const char *oldname, const char *newname)
-{
- struct string_list skip = STRING_LIST_INIT_NODUP;
- struct strbuf err = STRBUF_INIT;
- int ret;
-
- string_list_insert(&skip, oldname);
- ret = !verify_refname_available(newname, NULL, &skip, &err);
- if (!ret)
- error("%s", err.buf);
-
- string_list_clear(&skip, 0);
- strbuf_release(&err);
- return ret;
-}
-
/* backend functions */
int refs_init_db(struct strbuf *err, int shared)
{
@@ -1122,6 +1106,11 @@ int delete_refs(struct string_list *refnames)
return the_refs_backend->delete_refs(refnames);
}
+int rename_ref(const char *oldref, const char *newref, const char *logmsg)
+{
+ return the_refs_backend->rename_ref(oldref, newref, logmsg);
+}
+
const char *resolve_ref_unsafe(const char *ref, int resolve_flags,
unsigned char *sha1, int *flags)
{
@@ -1135,6 +1124,22 @@ int verify_refname_available(const char *refname, struct string_list *extra,
return the_refs_backend->verify_refname_available(refname, extra, skip, err);
}
+int rename_ref_available(const char *oldname, const char *newname)
+{
+ struct string_list skip = STRING_LIST_INIT_NODUP;
+ struct strbuf err = STRBUF_INIT;
+ int ret;
+
+ string_list_insert(&skip, oldname);
+ ret = !verify_refname_available(newname, NULL, &skip, &err);
+ if (!ret)
+ error("%s", err.buf);
+
+ string_list_clear(&skip, 0);
+ strbuf_release(&err);
+ return ret;
+}
+
int pack_refs(unsigned int flags)
{
return the_refs_backend->pack_refs(flags);
diff --git a/refs/files-backend.c b/refs/files-backend.c
index e8e112c..fd4b530 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2478,7 +2478,8 @@ static int commit_ref_update(struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg,
int flags, struct strbuf *err);
-int rename_ref(const char *oldrefname, const char *newrefname, const char *logmsg)
+static int files_rename_ref(const char *oldrefname, const char *newrefname,
+ const char *logmsg)
{
unsigned char sha1[20], orig_sha1[20];
int flag = 0, logmoved = 0;
@@ -3569,6 +3570,7 @@ struct ref_storage_be refs_be_files = {
files_peel_ref,
files_create_symref,
files_delete_refs,
+ files_rename_ref,
files_resolve_ref_unsafe,
files_verify_refname_available,
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index f3c2632..64c3092 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -53,6 +53,13 @@ int do_for_each_per_worktree_ref(const char *submodule, const char *base,
void *cb_data);
/*
+ * Check if the new name does not conflict with any existing refs
+ * (other than possibly the old ref). Return 0 if the ref can be
+ * renamed to the new name.
+ */
+int rename_ref_available(const char *oldname, const char *newname);
+
+/*
* Return true iff refname is minimally safe. "Safe" here means that
* deleting a loose reference by this name will not do any damage, for
* example by causing a file that is not a reference to be deleted.
@@ -246,6 +253,7 @@ typedef const char *resolve_ref_unsafe_fn(const char *ref,
typedef int verify_refname_available_fn(const char *refname, struct string_list *extra, struct string_list *skip, struct strbuf *err);
typedef int resolve_gitlink_ref_fn(const char *path, const char *refname,
unsigned char *sha1);
+typedef int rename_ref_fn(const char *oldref, const char *newref, const char *logmsg);
/* iteration methods */
typedef int head_ref_fn(each_ref_fn fn, void *cb_data);
@@ -284,6 +292,7 @@ struct ref_storage_be {
peel_ref_fn *peel_ref;
create_symref_fn *create_symref;
delete_refs_fn *delete_refs;
+ rename_ref_fn *rename_ref;
resolve_ref_unsafe_fn *resolve_ref_unsafe;
verify_refname_available_fn *verify_refname_available;
--
2.4.2.749.g730654d-twtrsrc
David Turner <dturner@twopensource.com>