static int filter_wants(git_remote *remote)
{
git_remote_head **heads;
git_refspec tagspec, head;
int error = 0;
git_odb *odb;
size_t i, heads_len;
git_vector_clear(&remote->refs);
if ((error = git_refspec__parse(&tagspec, GIT_REFSPEC_TAGS, true)) < 0)
return error;
/*
* The fetch refspec can be NULL, and what this means is that the
* user didn't specify one. This is fine, as it means that we're
* not interested in any particular branch but just the remote's
* HEAD, which will be stored in FETCH_HEAD after the fetch.
*/
if (remote->active_refspecs.length == 0) {
if ((error = git_refspec__parse(&head, "HEAD", true)) < 0)
goto cleanup;
error = git_refspec__dwim_one(&remote->active_refspecs, &head, &remote->refs);
git_refspec__free(&head);
if (error < 0)
goto cleanup;
}
if (git_repository_odb__weakptr(&odb, remote->repo) < 0)
goto cleanup;
if (git_remote_ls((const git_remote_head ***)&heads, &heads_len, remote) < 0)
goto cleanup;
for (i = 0; i < heads_len; i++) {
if ((error = maybe_want(remote, heads[i], odb, &tagspec)) < 0)
break;
}
cleanup:
git_refspec__free(&tagspec);
return error;
}
static void free_refspecs(git_vector *vec)
{
size_t i;
git_refspec *spec;
git_vector_foreach(vec, i, spec) {
git_refspec__free(spec);
git__free(spec);
}
static void assert_refspec(unsigned int direction, const char *input, bool is_expected_to_be_valid)
{
git_refspec refspec;
int error;
error = git_refspec__parse(&refspec, input, direction == GIT_DIRECTION_FETCH);
git_refspec__free(&refspec);
if (is_expected_to_be_valid)
cl_assert_equal_i(0, error);
else
cl_assert_equal_i(GIT_ERROR, error);
}
static int add_refspec(git_remote *remote, const char *string, bool is_fetch)
{
git_refspec *spec;
spec = git__calloc(1, sizeof(git_refspec));
GITERR_CHECK_ALLOC(spec);
if (git_refspec__parse(spec, string, is_fetch) < 0) {
git__free(spec);
return -1;
}
spec->push = !is_fetch;
if (git_vector_insert(&remote->refspecs, spec) < 0) {
git_refspec__free(spec);
git__free(spec);
return -1;
}
return 0;
}
int git_refspec__parse(git_refspec *refspec, const char *input, bool is_fetch)
{
// Ported from https://github.com/git/git/blob/f06d47e7e0d9db709ee204ed13a8a7486149f494/remote.c#L518-636
size_t llen;
int is_glob = 0;
const char *lhs, *rhs;
int flags;
assert(refspec && input);
memset(refspec, 0x0, sizeof(git_refspec));
refspec->push = !is_fetch;
lhs = input;
if (*lhs == '+') {
refspec->force = 1;
lhs++;
}
rhs = strrchr(lhs, ':');
/*
* Before going on, special case ":" (or "+:") as a refspec
* for matching refs.
*/
if (!is_fetch && rhs == lhs && rhs[1] == '\0') {
refspec->matching = 1;
refspec->string = git__strdup(input);
GITERR_CHECK_ALLOC(refspec->string);
refspec->src = git__strdup("");
GITERR_CHECK_ALLOC(refspec->src);
refspec->dst = git__strdup("");
GITERR_CHECK_ALLOC(refspec->dst);
return 0;
}
if (rhs) {
size_t rlen = strlen(++rhs);
if (rlen || !is_fetch) {
is_glob = (1 <= rlen && strchr(rhs, '*'));
refspec->dst = git__strndup(rhs, rlen);
}
}
llen = (rhs ? (size_t)(rhs - lhs - 1) : strlen(lhs));
if (1 <= llen && memchr(lhs, '*', llen)) {
if ((rhs && !is_glob) || (!rhs && is_fetch))
goto invalid;
is_glob = 1;
} else if (rhs && is_glob)
goto invalid;
refspec->pattern = is_glob;
refspec->src = git__strndup(lhs, llen);
flags = GIT_REF_FORMAT_ALLOW_ONELEVEL | GIT_REF_FORMAT_REFSPEC_SHORTHAND
| (is_glob ? GIT_REF_FORMAT_REFSPEC_PATTERN : 0);
if (is_fetch) {
/*
* LHS
* - empty is allowed; it means HEAD.
* - otherwise it must be a valid looking ref.
*/
if (!*refspec->src)
; /* empty is ok */
else if (!git_reference__is_valid_name(refspec->src, flags))
goto invalid;
/*
* RHS
* - missing is ok, and is same as empty.
* - empty is ok; it means not to store.
* - otherwise it must be a valid looking ref.
*/
if (!refspec->dst)
; /* ok */
else if (!*refspec->dst)
; /* ok */
else if (!git_reference__is_valid_name(refspec->dst, flags))
goto invalid;
} else {
/*
* LHS
* - empty is allowed; it means delete.
* - when wildcarded, it must be a valid looking ref.
* - otherwise, it must be an extended SHA-1, but
* there is no existing way to validate this.
*/
if (!*refspec->src)
; /* empty is ok */
else if (is_glob) {
if (!git_reference__is_valid_name(refspec->src, flags))
goto invalid;
}
else {
; /* anything goes, for now */
}
/*
* RHS
* - missing is allowed, but LHS then must be a
* valid looking ref.
* - empty is not allowed.
* - otherwise it must be a valid looking ref.
*/
if (!refspec->dst) {
if (!git_reference__is_valid_name(refspec->src, flags))
goto invalid;
} else if (!*refspec->dst) {
goto invalid;
} else {
if (!git_reference__is_valid_name(refspec->dst, flags))
goto invalid;
}
/* if the RHS is empty, then it's a copy of the LHS */
if (!refspec->dst) {
refspec->dst = git__strdup(refspec->src);
GITERR_CHECK_ALLOC(refspec->dst);
}
}
refspec->string = git__strdup(input);
GITERR_CHECK_ALLOC(refspec->string);
return 0;
invalid:
giterr_set(
GITERR_INVALID,
"'%s' is not a valid refspec.", input);
git_refspec__free(refspec);
return -1;
}
void sharpgit_refspec_free(git_refspec *refspec)
{
git_refspec__free(refspec);
free(refspec);
}
