Hash :
4027f31a
Author :
Date :
2017-11-04T19:41:54
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#include <assert.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <sha1.h>
#include <string.h>
#include "got_path.h"
#include "got_error.h"
#include "got_refs.h"
#include "got_repository.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"
static char *
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;
}
static char *
get_path_objects(struct got_repository *repo)
{
return get_path_git_child(repo, GOT_OBJECTS_DIR);
}
static char *
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 = get_path_git_dir(repo);
char *path_objects = get_path_objects(repo);
char *path_refs = 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 *abspath)
{
struct got_repository *repo;
if (!got_path_is_absolute(abspath))
return got_error(GOT_ERR_NOT_ABSPATH);
repo = calloc(1, sizeof(*repo));
if (repo == NULL)
return got_error(GOT_ERR_NO_MEM);
repo->path = got_path_normalize(abspath);
if (repo->path == NULL)
return got_error(GOT_ERR_BAD_PATH);
if (!is_git_repo(repo))
return got_error(GOT_ERR_NOT_GIT_REPO);
*ret = repo;
return NULL;
}
void
got_repo_close(struct got_repository *repo)
{
free(repo->path);
free(repo);
}
const char *
got_repo_get_path(struct got_repository *repo)
{
return repo->path;
}
const struct got_error *
got_repo_get_reference(struct got_reference **ref,
struct got_repository *repo, const char *refname)
{
const struct got_error *err = NULL;
char *path_refs;
/* Some refs live in the .git directory. */
if (strcmp(refname, GOT_REF_HEAD) == 0)
path_refs = get_path_git_dir(repo);
else
path_refs = get_path_refs(repo);
err = got_ref_open(ref, path_refs, refname);
free(path_refs);
return err;
}