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/*
* Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <assert.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <sha1.h>
#include <string.h>
#include "got_error.h"
#include "got_refs.h"
#include "got_repository.h"
#include "path.h"
#define GOT_GIT_DIR ".git"
/* Mandatory files and directories inside the git directory. */
#define GOT_OBJECTS_DIR "objects"
#define GOT_REFS_DIR "refs"
#define GOT_HEAD_FILE "HEAD"
#define GOT_FETCH_HEAD_FILE "FETCH_HEAD"
#define GOT_ORIG_HEAD_FILE "ORIG_HEAD"
char *
got_repo_get_path_git_dir(struct got_repository *repo)
{
char *path_git;
if (asprintf(&path_git, "%s/%s", repo->path, GOT_GIT_DIR) == -1)
return NULL;
return path_git;
}
static char *
get_path_git_child(struct got_repository *repo, const char *basename)
{
char *path_child;
if (asprintf(&path_child, "%s/%s/%s", repo->path, GOT_GIT_DIR,
basename) == -1)
return NULL;
return path_child;
}
char *
got_repo_get_path_objects(struct got_repository *repo)
{
return get_path_git_child(repo, GOT_OBJECTS_DIR);
}
char *
got_repo_get_path_refs(struct got_repository *repo)
{
return get_path_git_child(repo, GOT_REFS_DIR);
}
static char *
get_path_head(struct got_repository *repo)
{
return get_path_git_child(repo, GOT_HEAD_FILE);
}
static int
is_git_repo(struct got_repository *repo)
{
char *path_git = got_repo_get_path_git_dir(repo);
char *path_objects = got_repo_get_path_objects(repo);
char *path_refs = got_repo_get_path_refs(repo);
char *path_head = get_path_head(repo);
int ret;
ret = (path_git != NULL) && (path_objects != NULL) &&
(path_refs != NULL) && (path_head != NULL);
free(path_git);
free(path_objects);
free(path_refs);
free(path_head);
return ret;
}
const struct got_error *
got_repo_open(struct got_repository **ret, const char *path)
{
struct got_repository *repo = NULL;
const struct got_error *err = NULL;
char *abspath = got_path_get_absolute(path);
if (abspath == NULL)
return got_error(GOT_ERR_BAD_PATH);
repo = calloc(1, sizeof(*repo));
if (repo == NULL) {
err = got_error(GOT_ERR_NO_MEM);
goto done;
}
repo->path = got_path_normalize(abspath);
if (repo->path == NULL) {
err = got_error(GOT_ERR_BAD_PATH);
goto done;
}
if (!is_git_repo(repo)) {
err = got_error(GOT_ERR_NOT_GIT_REPO);
goto done;
}
*ret = repo;
done:
if (err)
free(repo);
free(abspath);
return err;
}
void
got_repo_close(struct got_repository *repo)
{
free(repo->path);
free(repo);
}