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odb: Add git_odb_add_disk_alternate

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Loads a disk alternate by path to the ODB. Mimics the
`GIT_ALTERNATE_OBJECT_DIRECTORIES` shell var.
This commit is contained in:
Vicent Marti 2012-11-28 10:47:10 +01:00
parent 64c5112188
commit 9507a434c6
2 changed files with 23 additions and 2 deletions
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17
include/git2/odb.h
View File

@ -88,6 +88,23 @@ GIT_EXTERN(int) git_odb_add_backend(git_odb *odb, git_odb_backend *backend, int
*/
GIT_EXTERN(int) git_odb_add_alternate(git_odb *odb, git_odb_backend *backend, int priority);
/**
* Add an on-disk alternate to an existing Object DB.
*
* Note that the added path must point to an `objects`, not
* to a full repository, to use it as an alternate store.
*
* Alternate backends are always checked for objects *after*
* all the main backends have been exhausted.
*
* Writing is disabled on alternate backends.
*
* @param odb database to add the backend to
* @param path path to the objects folder for the alternate
* @return 0 on success; error code otherwise
*/
GIT_EXTERN(int) git_odb_add_disk_alternate(git_odb *odb, const char *path);
/**
* Close an open object database.
*

8
src/odb.c
View File

@ -470,6 +470,11 @@ static int load_alternates(git_odb *odb, const char *objects_dir, int alternate_
return result;
}
int git_odb_add_disk_alternate(git_odb *odb, const char *path)
{
return add_default_backends(odb, path, 1, 0);
}
int git_odb_open(git_odb **out, const char *objects_dir)
{
git_odb *db;
@ -481,8 +486,7 @@ int git_odb_open(git_odb **out, const char *objects_dir)
if (git_odb_new(&db) < 0)
return -1;
if (add_default_backends(db, objects_dir, 0, 0) < 0)
{
if (add_default_backends(db, objects_dir, 0, 0) < 0) {
git_odb_free(db);
return -1;
}