Hash :
d6258deb
Author :
Date :
2011-06-25T15:10:09
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#include "common.h"
#include "git2/types.h"
#include "git2/transport.h"
#include "git2/net.h"
#include "git2/repository.h"
#include "git2/object.h"
#include "git2/tag.h"
#include "refs.h"
#include "transport.h"
typedef struct {
git_vector *vec;
git_repository *repo;
} callback_data;
static int compare_heads(const void *a, const void *b)
{
const git_remote_head *heada = *(const git_remote_head **)a;
const git_remote_head *headb = *(const git_remote_head **)b;
return strcmp(heada->name, headb->name);
}
/*
* 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, git_net_direction GIT_UNUSED(dir))
{
git_repository *repo;
int error;
const char *path;
const char file_prefix[] = "file://";
GIT_UNUSED_ARG(dir);
/* The repo layer doesn't want the prefix */
if (!git__prefixcmp(transport->url, file_prefix))
path = transport->url + STRLEN(file_prefix);
else
path = transport->url;
error = git_repository_open(&repo, path);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to open remote");
transport->private = repo;
transport->connected = 1;
return GIT_SUCCESS;
}
static int heads_cb(const char *name, void *ptr)
{
callback_data *data = ptr;
git_vector *vec = data->vec;
git_repository *repo = data->repo;
const char peeled[] = "^{}";
git_remote_head *head;
git_reference *ref;
git_object *obj = NULL;
int error = GIT_SUCCESS, peel_len, ret;
head = git__malloc(sizeof(git_remote_head));
if (head == NULL)
return GIT_ENOMEM;
head->name = git__strdup(name);
if (head->name == NULL) {
error = GIT_ENOMEM;
goto out;
}
error = git_reference_lookup(&ref, repo, name);
if (error < GIT_SUCCESS)
goto out;
error = git_reference_resolve(&ref, ref);
if (error < GIT_SUCCESS)
goto out;
git_oid_cpy(&head->oid, git_reference_oid(ref));
error = git_vector_insert(vec, head);
if (error < GIT_SUCCESS)
goto out;
/* If it's not a tag, we don't need to try to peel it */
if (git__prefixcmp(name, GIT_REFS_TAGS_DIR))
goto out;
error = git_object_lookup(&obj, repo, &head->oid, GIT_OBJ_ANY);
if (error < GIT_SUCCESS) {
git__rethrow(error, "Failed to lookup object");
}
/* If it's not an annotated tag, just get out */
if (git_object_type(obj) != GIT_OBJ_TAG)
goto out;
/* And if it's a tag, peel it, and add it to the list */
head = git__malloc(sizeof(git_remote_head));
peel_len = strlen(name) + STRLEN(peeled);
head->name = git__malloc(peel_len + 1);
ret = snprintf(head->name, peel_len + 1, "%s%s", name, peeled);
if (ret >= peel_len + 1) {
error = git__throw(GIT_ERROR, "The string is magically to long");
}
git_oid_cpy(&head->oid, git_tag_target_oid((git_tag *) obj));
error = git_vector_insert(vec, head);
if (error < GIT_SUCCESS)
goto out;
out:
git_object_close(obj);
if (error < GIT_SUCCESS) {
free(head->name);
free(head);
}
return error;
}
static int local_ls(git_transport *transport, git_headarray *array)
{
int error;
git_repository *repo;
git_vector vec;
callback_data data;
assert(transport && transport->connected);
repo = transport->private;
error = git_vector_init(&vec, 16, compare_heads);
if (error < GIT_SUCCESS)
return error;
data.vec = &vec;
data.repo = repo;
error = git_reference_foreach(repo, GIT_REF_LISTALL, heads_cb, &data);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to list remote heads");
git_vector_sort(&vec);
array->len = vec.length;
array->heads = (git_remote_head **) vec.contents;
return error;
}
static int local_close(git_transport *GIT_UNUSED(transport))
{
/* Nothing to do */
GIT_UNUSED_ARG(transport);
return GIT_SUCCESS;
}
static void local_free(git_transport *transport)
{
assert(transport);
git_repository_free(transport->private);
free(transport->url);
free(transport);
}
/**************
* Public API *
**************/
int git_transport_local(git_transport *transport)
{
transport->connect = local_connect;
transport->ls = local_ls;
transport->close = local_close;
transport->free = local_free;
return GIT_SUCCESS;
}