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Merge pull request #279 from carlosmn/detached-orphan

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Add detached and orphan convenience functions
This commit is contained in:
Vicent Martí 2011-06-28 10:44:19 -07:00
commit ccd59372d4
3 changed files with 107 additions and 0 deletions
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24
include/git2/repository.h
View File

@ -218,6 +218,30 @@ GIT_EXTERN(void) git_repository_free(git_repository *repo);
*/
GIT_EXTERN(int) git_repository_init(git_repository **repo_out, const char *path, unsigned is_bare);
/**
* Check if a repository's HEAD is detached
*
* A repository's HEAD is detached when it points directly to a commit
* instead of a branch.
*
* @param repo Repo to test
* @return 1 if HEAD is detached, 0 if i'ts not; error code if there
* was an error.
*/
int git_repository_is_detached(git_repository *repo);
/**
* Check if the current branch is an orphan
*
* An orphan branch is one named from HEAD but which doesn't exist in
* the refs namespace, because it doesn't have any commit to point to.
*
* @param repo Repo to test
* @return 1 if the current branch is an orphan, 0 if it's not; error
* code if therewas an error
*/
int git_repository_is_orphan(git_repository *repo);
/**
* Check if a repository is empty
*

41
src/repository.c
View File

@ -752,6 +752,47 @@ cleanup:
return git__rethrow(error, "Failed to (re)init the repository `%s`", path);
}
int git_repository_is_detached(git_repository *repo)
{
git_reference *ref;
int error;
size_t GIT_UNUSED(_size);
git_otype type;
error = git_reference_lookup(&ref, repo, GIT_HEAD_FILE);
if (error < GIT_SUCCESS)
return error;
if (git_reference_type(ref) == GIT_REF_SYMBOLIC)
return 0;
error = git_odb_read_header(&_size, &type, repo->db, git_reference_oid(ref));
if (error < GIT_SUCCESS)
return error;
if (type != GIT_OBJ_COMMIT)
return git__throw(GIT_EOBJCORRUPTED, "HEAD is not a commit");
return 1;
}
int git_repository_is_orphan(git_repository *repo)
{
git_reference *ref;
int error;
error = git_reference_lookup(&ref, repo, GIT_HEAD_FILE);
if (error < GIT_SUCCESS)
return error;
if (git_reference_type(ref) == GIT_REF_OID)
return 0;
error = git_reference_resolve(&ref, ref);
return error == GIT_ENOTFOUND ? 1 : error;
}
int git_repository_is_empty(git_repository *repo)
{
git_reference *head, *branch;

42
tests/t12-repo.c
View File

@ -268,6 +268,46 @@ BEGIN_TEST(empty0, "test if a repository is empty or not")
git_repository_free(repo_empty);
END_TEST
BEGIN_TEST(detached0, "test if HEAD is detached")
git_repository *repo;
git_reference *ref;
git_oid oid;
must_pass(git_repository_open(&repo, REPOSITORY_FOLDER));
must_be_true(git_repository_is_detached(repo) == 0);
/* detach the HEAD */
git_oid_fromstr(&oid, "c47800c7266a2be04c571c04d5a6614691ea99bd");
must_pass(git_reference_create_oid_f(&ref, repo, "HEAD", &oid));
must_be_true(git_repository_is_detached(repo) == 1);
/* take the reop back to it's original state */
must_pass(git_reference_create_symbolic_f(&ref, repo, "HEAD", "refs/heads/master"));
must_be_true(git_repository_is_detached(repo) == 0);
git_repository_free(repo);
END_TEST
BEGIN_TEST(orphan0, "test if HEAD is orphan")
git_repository *repo;
git_reference *ref;
must_pass(git_repository_open(&repo, REPOSITORY_FOLDER));
must_be_true(git_repository_is_orphan(repo) == 0);
/* orphan HEAD */
must_pass(git_reference_create_symbolic_f(&ref, repo, "HEAD", "refs/heads/orphan"));
must_be_true(git_repository_is_orphan(repo) == 1);
/* take the reop back to it's original state */
must_pass(git_reference_create_symbolic_f(&ref, repo, "HEAD", "refs/heads/master"));
must_be_true(git_repository_is_orphan(repo) == 0);
git_repository_free(repo);
END_TEST
#define DISCOVER_FOLDER TEST_RESOURCES "/discover.git"
#define SUB_REPOSITORY_FOLDER_NAME "sub_repo"
@ -416,6 +456,8 @@ BEGIN_SUITE(repository)
ADD_TEST(open1);
ADD_TEST(open2);
ADD_TEST(empty0);
ADD_TEST(detached0);
ADD_TEST(orphan0);
ADD_TEST(discover0);
END_SUITE