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/*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "git2/remote.h"
#include "git2/oid.h"
#include "git2/refs.h"
#include "common.h"
#include "transport.h"
#include "remote.h"
#include "refspec.h"
/*
* Don't forget that this depends on the enum being correctly set
*/
static int whn_cmp(const void *a, const void *b)
{
git_remote_head *heada = *(git_remote_head **)(a);
git_remote_head *headb = *(git_remote_head **)(b);
return headb->type - heada->type;
}
/* FIXME: we assume that the transport has been connected, enforce that somehow */
int git_fetch_list_want(git_headarray *whn_list, git_repository *repo, git_remote *remote)
{
git_vector list;
git_headarray refs, lrefs;
git_transport *t = remote->transport;
const git_refspec *spec;
int error, i;
error = git_vector_init(&list, 16, whn_cmp);
if (error < GIT_SUCCESS)
return error;
error = git_transport_ls(t, &refs);
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Failed to list local refs");
goto cleanup;
}
spec = git_remote_fetchspec(remote);
if (spec == NULL) {
error = git__throw(GIT_ERROR, "The remote has to fetchspec");
goto cleanup;
}
for (i = 0; i < refs.len; ++i) {
char local[1024];
git_reference *ref;
git_remote_head *head = refs.heads[i];
/* If it doesn't match the refpec, we don't want it */
error = git_refspec_src_match(spec, head->name);
if (error == GIT_ENOMATCH)
continue;
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Error matching remote ref name");
goto cleanup;
}
/* If the local ref is the same, we don't want it either */
error = git_refspec_transform(local, sizeof(local), spec, head->name);
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Error transforming ref name");
goto cleanup;
}
error = git_reference_lookup(&ref, repo, local);
/* If we don't have it locally, it's new, so we want it */
if (error < GIT_SUCCESS && error != GIT_ENOTFOUND) {
error = git__rethrow(error, "Error looking up local ref");
goto cleanup;
}
if (ref != NULL) {
if (!git_oid_cmp(&head->oid, git_reference_oid(ref)))
continue;
}
/*
* Now we know we want to have that ref, so add it as a "want"
* to the list.
*/
head->type = GIT_WHN_WANT;
error = git_vector_insert(&list, head);
if (error < GIT_SUCCESS)
goto cleanup;
}
git_vector_sort(&list);
whn_list->len = list.length;
whn_list->heads = (git_remote_head **) list.contents;
return GIT_SUCCESS;
cleanup:
git_vector_free(&list);
return error;
}
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