/**
* ggit_ref_is_branch:
* @ref: a #GgitRef.
*
* Check whether the reference is a branch.
*
* Returns: %TRUE if the reference is a branch, %FALSE otherwise.
*
**/
gboolean
ggit_ref_is_branch (GgitRef *ref)
{
g_return_val_if_fail (ref != NULL, FALSE);
return git_reference_is_branch (_ggit_native_get (ref));
}
int git_branch_is_head(
const git_reference *branch)
{
git_reference *head;
bool is_same = false;
int error;
assert(branch);
if (!git_reference_is_branch(branch))
return false;
error = git_repository_head(&head, git_reference_owner(branch));
if (error == GIT_EUNBORNBRANCH || error == GIT_ENOTFOUND)
return false;
if (error < 0)
return -1;
is_same = strcmp(
git_reference_name(branch),
git_reference_name(head)) == 0;
git_reference_free(head);
return is_same;
}
static int retrieve_remote_tracking_reference(git_reference **base_ref, const char *identifier, git_repository *repo)
{
git_reference *tracking, *ref;
int error = -1;
if (*base_ref == NULL) {
if ((error = git_reference_dwim(&ref, repo, identifier)) < 0)
return error;
} else {
ref = *base_ref;
*base_ref = NULL;
}
if (!git_reference_is_branch(ref)) {
error = GIT_EINVALIDSPEC;
goto cleanup;
}
if ((error = git_branch_upstream(&tracking, ref)) < 0)
goto cleanup;
*base_ref = tracking;
cleanup:
git_reference_free(ref);
return error;
}
int git_branch_is_head(
git_reference *branch)
{
git_reference *head;
bool is_same = false;
int error;
assert(branch);
if (!git_reference_is_branch(branch))
return false;
error = git_repository_head(&head, git_reference_owner(branch));
if (error == GIT_EORPHANEDHEAD)
return false;
if (error < 0)
return -1;
is_same = strcmp(
git_reference_name(branch),
git_reference_name(head)) == 0;
git_reference_free(head);
return is_same;
}
GgitRef *
_ggit_ref_wrap (git_reference *ref,
gboolean owned)
{
GgitRef *gref;
if (git_reference_is_branch (ref))
{
gref = GGIT_REF (_ggit_branch_wrap (ref));
}
else
{
gref = g_object_new (GGIT_TYPE_REF,
"native", ref,
NULL);
}
if (owned)
{
_ggit_native_set_destroy_func (gref,
(GDestroyNotify)git_reference_free);
}
return gref;
}
static void assert_is_branch(const char *name, bool expected_branchness)
{
git_reference *reference;
cl_git_pass(git_reference_lookup(&reference, g_repo, name));
cl_assert_equal_i(expected_branchness, git_reference_is_branch(reference));
git_reference_free(reference);
}
/**
* Get head of repository
*
* @param repo S4 class git_repository
* @return R_NilValue if unborn branch or not found. S4 class
* git_branch if not a detached head. S4 class git_commit if detached
* head
*/
SEXP git2r_repository_head(SEXP repo)
{
int err;
SEXP result = R_NilValue;
git_commit *commit = NULL;
git_reference *reference = NULL;
git_repository *repository = NULL;
repository= git2r_repository_open(repo);
if (!repository)
git2r_error(git2r_err_invalid_repository, __func__, NULL);
err = git_repository_head(&reference, repository);
if (GIT_OK != err) {
if (GIT_EUNBORNBRANCH == err || GIT_ENOTFOUND == err)
err = GIT_OK;
goto cleanup;
}
if (git_reference_is_branch(reference)) {
git_branch_t type = GIT_BRANCH_LOCAL;
if (git_reference_is_remote(reference))
type = GIT_BRANCH_REMOTE;
PROTECT(result = NEW_OBJECT(MAKE_CLASS("git_branch")));
err = git2r_branch_init(reference, type, repo, result);
} else {
err = git_commit_lookup(
&commit,
repository,
git_reference_target(reference));
if (GIT_OK != err)
goto cleanup;
PROTECT(result = NEW_OBJECT(MAKE_CLASS("git_commit")));
git2r_commit_init(commit, repo, result);
}
cleanup:
if (commit)
git_commit_free(commit);
if (reference)
git_reference_free(reference);
if (repository)
git_repository_free(repository);
if (R_NilValue != result)
UNPROTECT(1);
if (GIT_OK != err)
git2r_error(git2r_err_from_libgit2, __func__, giterr_last()->message);
return result;
}
int git_branch_move(
git_reference **out,
git_reference *branch,
const char *new_branch_name,
int force)
{
git_buf new_reference_name = GIT_BUF_INIT,
old_config_section = GIT_BUF_INIT,
new_config_section = GIT_BUF_INIT,
log_message = GIT_BUF_INIT;
int error;
assert(branch && new_branch_name);
if (!git_reference_is_branch(branch))
return not_a_local_branch(git_reference_name(branch));
if ((error = git_buf_joinpath(&new_reference_name, GIT_REFS_HEADS_DIR, new_branch_name)) < 0)
goto done;
if ((error = git_buf_printf(&log_message, "branch: renamed %s to %s",
git_reference_name(branch), git_buf_cstr(&new_reference_name))) < 0)
goto done;
/* first update ref then config so failure won't trash config */
error = git_reference_rename(
out, branch, git_buf_cstr(&new_reference_name), force,
git_buf_cstr(&log_message));
if (error < 0)
goto done;
git_buf_join(&old_config_section, '.', "branch",
git_reference_name(branch) + strlen(GIT_REFS_HEADS_DIR));
git_buf_join(&new_config_section, '.', "branch", new_branch_name);
error = git_config_rename_section(
git_reference_owner(branch),
git_buf_cstr(&old_config_section),
git_buf_cstr(&new_config_section));
done:
git_buf_free(&new_reference_name);
git_buf_free(&old_config_section);
git_buf_free(&new_config_section);
git_buf_free(&log_message);
return error;
}
int git_branch_tracking(
git_reference **tracking_out,
git_reference *branch)
{
const char *remote_name, *merge_name;
git_buf buf = GIT_BUF_INIT;
int error = -1;
git_remote *remote = NULL;
const git_refspec *refspec;
assert(tracking_out && branch);
if (!git_reference_is_branch(branch))
return not_a_local_branch(branch);
if ((error = retrieve_tracking_configuration(&remote_name, branch, "branch.%s.remote")) < 0)
goto cleanup;
if ((error = retrieve_tracking_configuration(&merge_name, branch, "branch.%s.merge")) < 0)
goto cleanup;
if (strcmp(".", remote_name) != 0) {
if ((error = git_remote_load(&remote, git_reference_owner(branch), remote_name)) < 0)
goto cleanup;
refspec = git_remote_fetchspec(remote);
if (refspec == NULL
|| refspec->src == NULL
|| refspec->dst == NULL) {
error = GIT_ENOTFOUND;
goto cleanup;
}
if (git_refspec_transform_r(&buf, refspec, merge_name) < 0)
goto cleanup;
} else
if (git_buf_sets(&buf, merge_name) < 0)
goto cleanup;
error = git_reference_lookup(
tracking_out,
git_reference_owner(branch),
git_buf_cstr(&buf));
cleanup:
git_remote_free(remote);
git_buf_free(&buf);
return error;
}
int git_branch_move(
git_reference *branch,
const char *new_branch_name,
int force)
{
git_buf new_reference_name = GIT_BUF_INIT,
old_config_section = GIT_BUF_INIT,
new_config_section = GIT_BUF_INIT;
int error;
assert(branch && new_branch_name);
if (!git_reference_is_branch(branch))
return not_a_local_branch(branch);
if ((error = git_buf_joinpath(&new_reference_name, GIT_REFS_HEADS_DIR, new_branch_name)) < 0)
goto cleanup;
if (git_buf_printf(
&old_config_section,
"branch.%s",
git_reference_name(branch) + strlen(GIT_REFS_HEADS_DIR)) < 0)
goto cleanup;
if ((error = git_reference_rename(branch, git_buf_cstr(&new_reference_name), force)) < 0)
goto cleanup;
if (git_buf_printf(&new_config_section, "branch.%s", new_branch_name) < 0)
goto cleanup;
if ((error = git_config_rename_section(
git_reference_owner(branch),
git_buf_cstr(&old_config_section),
git_buf_cstr(&new_config_section))) < 0)
goto cleanup;
cleanup:
git_buf_free(&new_reference_name);
git_buf_free(&old_config_section);
git_buf_free(&new_config_section);
return error;
}
int git_branch_name(const char **out, git_reference *ref)
{
const char *branch_name;
assert(out && ref);
branch_name = ref->name;
if (git_reference_is_branch(ref)) {
branch_name += strlen(GIT_REFS_HEADS_DIR);
} else if (git_reference_is_remote(ref)) {
branch_name += strlen(GIT_REFS_REMOTES_DIR);
} else {
giterr_set(GITERR_INVALID,
"Reference '%s' is neither a local nor a remote branch.", ref->name);
return -1;
}
*out = branch_name;
return 0;
}
int git_branch_delete(git_reference *branch)
{
int is_head;
git_buf config_section = GIT_BUF_INIT;
int error = -1;
assert(branch);
if (!git_reference_is_branch(branch) &&
!git_reference_is_remote(branch)) {
giterr_set(GITERR_INVALID, "Reference '%s' is not a valid branch.", git_reference_name(branch));
return -1;
}
if ((is_head = git_branch_is_head(branch)) < 0)
return is_head;
if (is_head) {
giterr_set(GITERR_REFERENCE,
"Cannot delete branch '%s' as it is the current HEAD of the repository.", git_reference_name(branch));
return -1;
}
if (git_buf_printf(&config_section, "branch.%s", git_reference_name(branch) + strlen(GIT_REFS_HEADS_DIR)) < 0)
goto on_error;
if (git_config_rename_section(
git_reference_owner(branch),
git_buf_cstr(&config_section),
NULL) < 0)
goto on_error;
if (git_reference_delete(branch) < 0)
goto on_error;
error = 0;
on_error:
git_buf_free(&config_section);
return error;
}
/*
* call-seq:
* reference.branch? -> true or false
*
* Returns +true+ if +reference+ is a local branch, false otherwise.
*/
static VALUE rb_git_ref_is_branch(VALUE self)
{
git_reference *ref;
Data_Get_Struct(self, git_reference, ref);
return git_reference_is_branch(ref) ? Qtrue : Qfalse;
}
