diff options
Diffstat (limited to 'src/repository.c')
| -rw-r--r-- | src/repository.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/repository.c b/src/repository.c index 098d09858..94f67f497 100644 --- a/src/repository.c +++ b/src/repository.c @@ -35,9 +35,15 @@ #define GIT_FOLDER "/.git/" #define GIT_OBJECTS_FOLDER "objects/" +#define GIT_REFS_FOLDER "refs/" #define GIT_INDEX_FILE "index" #define GIT_HEAD_FILE "HEAD" +#define GIT_SYMREF "ref: " +#define GIT_REFS_HEADS "refs/heads/" +#define GIT_REFS_TAGS "refs/tags/" +#define GIT_BRANCH_MASTER "master" + static const int default_table_size = 32; static const double max_load_factor = 0.65; @@ -58,6 +64,13 @@ static struct { { "REF_DELTA", 0, 0 } /* 7 = GIT_OBJ_REF_DELTA */ }; +typedef struct git_repository_init_results { + char *path_repository; + + unsigned is_bare:1; + unsigned has_been_reinit:1; +} git_repository_init_results; + /*********************************************************** * * MISCELANEOUS HELPER FUNCTIONS @@ -722,3 +735,146 @@ int git_object_typeisloose(git_otype type) return git_objects_table[type].loose; } + +int git_repository_init__reinit(git_repository_init_results* results) +{ + /* To be implemented */ + + results->has_been_reinit = 1; + return GIT_SUCCESS; +} + +int git_repository_init__create_head(const char* head_path) +{ + git_file fd; + int error = GIT_SUCCESS; + char head_symlink[50]; + int len; + + len = sprintf(head_symlink, "%s %s%s\n", GIT_SYMREF, GIT_REFS_HEADS, GIT_BRANCH_MASTER); + + if ((fd = gitfo_creat(head_path, S_IREAD | S_IWRITE)) < 0) + return GIT_ERROR; + + error = gitfo_write(fd, (void*)head_symlink, strlen(head_symlink)); + if (error < GIT_SUCCESS) + goto cleanup; + +cleanup: + gitfo_close(fd); + return error; +} + +int git_repository_init__create_structure_or_reinit(git_repository_init_results* results) +{ + char temp_path[GIT_PATH_MAX]; + int path_len; + const int mode = 0755; /* or 0777 ? */ + + char* git_dir = results->path_repository; + + //TODO : Ensure the parent tree structure already exists by recursively building it through gitfo_mkdir_recurs(). + if (gitfo_mkdir_recurs(git_dir, mode)) + return GIT_ERROR; + + path_len = strlen(git_dir); + strcpy(temp_path, git_dir); + + /* Does HEAD file already exist ? */ + strcpy(temp_path + path_len, GIT_HEAD_FILE); + + if (!gitfo_exists(temp_path) && gitfo_isdir(temp_path) < GIT_SUCCESS) + { + /* Something very wrong has happened to this repository :-) */ + return GIT_ERROR; + } + + if (!gitfo_exists(temp_path)) + { + return git_repository_init__reinit(results); + } + + if (git_repository_init__create_head(temp_path) < GIT_SUCCESS) + return GIT_ERROR; + + /* Creates the '/objects/' directory */ + strcpy(temp_path + path_len, GIT_OBJECTS_FOLDER); + if (gitfo_mkdir(temp_path, mode)) + return GIT_ERROR; + + /* Creates the '/refs/' directory */ + strcpy(temp_path + path_len, GIT_REFS_FOLDER); + if (gitfo_mkdir(temp_path, mode)) + return GIT_ERROR; + + /* Creates the '/refs/heads/' directory */ + strcpy(temp_path + path_len, GIT_REFS_HEADS); + if (gitfo_mkdir(temp_path, mode)) + return GIT_ERROR; + + /* Creates the '/refs/tags/' directory */ + strcpy(temp_path + path_len, GIT_REFS_TAGS); + if (gitfo_mkdir(temp_path, mode)) + return GIT_ERROR; + + + /* To be implemented */ + + return GIT_SUCCESS; +} + +int git_repository_init__assign_git_directory(git_repository_init_results* results, const char* path) +{ + const int MAX_GITDIR_TREE_STRUCTURE_PATH_LENGTH = 66; // TODO: How many ? + char temp_path[GIT_PATH_MAX]; + int path_len; + + path_len = strlen(path); + strcpy(temp_path, path); + + /* Ensure path has a trailing slash */ + if (temp_path[path_len - 1] != '/') { + temp_path[path_len] = '/'; + temp_path[path_len + 1] = 0; + + path_len = path_len + 1; + } + + assert(path_len < GIT_PATH_MAX - MAX_GITDIR_TREE_STRUCTURE_PATH_LENGTH); + + if (!results->is_bare) + { + strcpy(temp_path + path_len - 1, GIT_FOLDER); + path_len = path_len + strlen(GIT_FOLDER) - 1; /* Skip the leading slash from the constant */ + } + + results->path_repository = git__strdup(temp_path); + + return GIT_SUCCESS; +} + +int git_repository_init(git_repository** repo_out, const char* path, unsigned is_bare) +{ + git_repository_init_results results; + int error = GIT_SUCCESS; + + assert(repo_out && path); + + results.is_bare = is_bare; + + error = git_repository_init__assign_git_directory(&results, path); + if (error < GIT_SUCCESS) + goto cleanup; + + error = git_repository_init__create_structure_or_reinit(&results); + if (error < GIT_SUCCESS) + goto cleanup; + + error = git_repository_open(repo_out, results.path_repository); + if (error < GIT_SUCCESS) + goto cleanup; + +cleanup: + free(results.path_repository); + return error; +}
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