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/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "git2/types.h"
#include "git2/net.h"
#include "git2/repository.h"
#include "git2/object.h"
#include "git2/tag.h"
#include "refs.h"
#include "transport.h"
#include "posix.h"
#include "path.h"
#include "buffer.h"
typedef struct {
git_transport parent;
git_repository *repo;
git_vector refs;
} transport_local;
static int add_ref(transport_local *t, const char *name)
{
const char peeled[] = "^{}";
git_remote_head *head;
git_object *obj = NULL, *target = NULL;
git_buf buf = GIT_BUF_INIT;
head = git__malloc(sizeof(git_remote_head));
GITERR_CHECK_ALLOC(head);
head->name = git__strdup(name);
GITERR_CHECK_ALLOC(head->name);
if (git_reference_name_to_oid(&head->oid, t->repo, name) < 0 ||
git_vector_insert(&t->refs, head) < 0)
{
git__free(head->name);
git__free(head);
return -1;
}
/* If it's not a tag, we don't need to try to peel it */
if (git__prefixcmp(name, GIT_REFS_TAGS_DIR))
return 0;
if (git_object_lookup(&obj, t->repo, &head->oid, GIT_OBJ_ANY) < 0)
return -1;
head = NULL;
/* If it's not an annotated tag, just get out */
if (git_object_type(obj) != GIT_OBJ_TAG) {
git_object_free(obj);
return 0;
}
/* And if it's a tag, peel it, and add it to the list */
head = git__malloc(sizeof(git_remote_head));
GITERR_CHECK_ALLOC(head);
if (git_buf_join(&buf, 0, name, peeled) < 0)
return -1;
head->name = git_buf_detach(&buf);
if (git_tag_peel(&target, (git_tag *) obj) < 0)
goto on_error;
git_oid_cpy(&head->oid, git_object_id(target));
git_object_free(obj);
git_object_free(target);
if (git_vector_insert(&t->refs, head) < 0)
return -1;
return 0;
on_error:
git_object_free(obj);
git_object_free(target);
return -1;
}
static int store_refs(transport_local *t)
{
unsigned int i;
git_strarray ref_names = {0};
assert(t);
if (git_reference_list(&ref_names, t->repo, GIT_REF_LISTALL) < 0 ||
git_vector_init(&t->refs, (unsigned int)ref_names.count, NULL) < 0)
goto on_error;
/* Sort the references first */
git__tsort((void **)ref_names.strings, ref_names.count, &git__strcmp_cb);
/* Add HEAD */
if (add_ref(t, GIT_HEAD_FILE) < 0)
goto on_error;
for (i = 0; i < ref_names.count; ++i) {
if (add_ref(t, ref_names.strings[i]) < 0)
goto on_error;
}
git_strarray_free(&ref_names);
return 0;
on_error:
git_vector_free(&t->refs);
git_strarray_free(&ref_names);
return -1;
}
static int local_ls(git_transport *transport, git_headlist_cb list_cb, void *payload)
{
transport_local *t = (transport_local *) transport;
git_vector *refs = &t->refs;
unsigned int i;
git_remote_head *h;
assert(transport && transport->connected);
git_vector_foreach(refs, i, h) {
if (list_cb(h, payload) < 0)
return -1;
}
return 0;
}
/*
* Try to open the url as a git directory. The direction doesn't
* matter in this case because we're calulating the heads ourselves.
*/
static int local_connect(git_transport *transport, int direction)
{
git_repository *repo;
int error;
transport_local *t = (transport_local *) transport;
const char *path;
git_buf buf = GIT_BUF_INIT;
GIT_UNUSED(direction);
/* The repo layer doesn't want the prefix */
if (!git__prefixcmp(transport->url, "file://")) {
if (git_path_fromurl(&buf, transport->url) < 0) {
git_buf_free(&buf);
return -1;
}
path = git_buf_cstr(&buf);
} else { /* We assume transport->url is already a path */
path = transport->url;
}
error = git_repository_open(&repo, path);
git_buf_free(&buf);
if (error < 0)
return -1;
t->repo = repo;
if (store_refs(t) < 0)
return -1;
t->parent.connected = 1;
return 0;
}
static int local_negotiate_fetch(git_transport *transport, git_repository *repo, const git_vector *wants)
{
GIT_UNUSED(transport);
GIT_UNUSED(repo);
GIT_UNUSED(wants);
giterr_set(GITERR_NET, "Fetch via local transport isn't implemented. Sorry");
return -1;
}
static int local_close(git_transport *transport)
{
transport_local *t = (transport_local *)transport;
git_repository_free(t->repo);
t->repo = NULL;
return 0;
}
static void local_free(git_transport *transport)
{
unsigned int i;
transport_local *t = (transport_local *) transport;
git_vector *vec = &t->refs;
git_remote_head *h;
assert(transport);
git_vector_foreach (vec, i, h) {
git__free(h->name);
git__free(h);
}
git_vector_free(vec);
git__free(t->parent.url);
git__free(t);
}
/**************
* Public API *
**************/
int git_transport_local(git_transport **out)
{
transport_local *t;
t = git__malloc(sizeof(transport_local));
GITERR_CHECK_ALLOC(t);
memset(t, 0x0, sizeof(transport_local));
t->parent.connect = local_connect;
t->parent.ls = local_ls;
t->parent.negotiate_fetch = local_negotiate_fetch;
t->parent.close = local_close;
t->parent.free = local_free;
*out = (git_transport *) t;
return 0;
}
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