2 #include "repository.h"
4 #include "submodule-config.h"
6 /* The main repository */
7 static struct repository the_repo = {
8 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &the_index, 0, 0
10 struct repository *the_repository = &the_repo;
12 static char *git_path_from_env(const char *envvar, const char *git_dir,
13 const char *path, int fromenv)
16 const char *value = getenv(envvar);
18 return xstrdup(value);
21 return xstrfmt("%s/%s", git_dir, path);
24 static int find_common_dir(struct strbuf *sb, const char *gitdir, int fromenv)
27 const char *value = getenv(GIT_COMMON_DIR_ENVIRONMENT);
29 strbuf_addstr(sb, value);
34 return get_common_dir_noenv(sb, gitdir);
37 static void repo_setup_env(struct repository *repo)
39 struct strbuf sb = STRBUF_INIT;
41 repo->different_commondir = find_common_dir(&sb, repo->gitdir,
43 free(repo->commondir);
44 repo->commondir = strbuf_detach(&sb, NULL);
45 free(repo->objectdir);
46 repo->objectdir = git_path_from_env(DB_ENVIRONMENT, repo->commondir,
47 "objects", !repo->ignore_env);
48 free(repo->graft_file);
49 repo->graft_file = git_path_from_env(GRAFT_ENVIRONMENT, repo->commondir,
50 "info/grafts", !repo->ignore_env);
51 free(repo->index_file);
52 repo->index_file = git_path_from_env(INDEX_ENVIRONMENT, repo->gitdir,
53 "index", !repo->ignore_env);
56 void repo_set_gitdir(struct repository *repo, const char *path)
58 const char *gitfile = read_gitfile(path);
61 * NEEDSWORK: Eventually we want to be able to free gitdir and the rest
62 * of the environment before reinitializing it again, but we have some
63 * crazy code paths where we try to set gitdir with the current gitdir
64 * and we don't want to free gitdir before copying the passed in value.
66 repo->gitdir = xstrdup(gitfile ? gitfile : path);
72 * Attempt to resolve and set the provided 'gitdir' for repository 'repo'.
73 * Return 0 upon success and a non-zero value upon failure.
75 static int repo_init_gitdir(struct repository *repo, const char *gitdir)
80 const char *resolved_gitdir;
82 abspath = real_pathdup(gitdir, 0);
88 /* 'gitdir' must reference the gitdir directly */
89 resolved_gitdir = resolve_gitdir_gently(abspath, &error);
90 if (!resolved_gitdir) {
95 repo_set_gitdir(repo, resolved_gitdir);
102 void repo_set_worktree(struct repository *repo, const char *path)
104 repo->worktree = real_pathdup(path, 1);
107 static int read_and_verify_repository_format(struct repository_format *format,
108 const char *commondir)
111 struct strbuf sb = STRBUF_INIT;
113 strbuf_addf(&sb, "%s/config", commondir);
114 read_repository_format(format, sb.buf);
117 if (verify_repository_format(format, &sb) < 0) {
118 warning("%s", sb.buf);
127 * Initialize 'repo' based on the provided 'gitdir'.
128 * Return 0 upon success and a non-zero value upon failure.
130 int repo_init(struct repository *repo, const char *gitdir, const char *worktree)
132 struct repository_format format;
133 memset(repo, 0, sizeof(*repo));
135 repo->ignore_env = 1;
137 if (repo_init_gitdir(repo, gitdir))
140 if (read_and_verify_repository_format(&format, repo->commondir))
144 repo_set_worktree(repo, worktree);
154 * Initialize 'submodule' as the submodule given by 'path' in parent repository
156 * Return 0 upon success and a non-zero value upon failure.
158 int repo_submodule_init(struct repository *submodule,
159 struct repository *superproject,
162 const struct submodule *sub;
163 struct strbuf gitdir = STRBUF_INIT;
164 struct strbuf worktree = STRBUF_INIT;
167 sub = submodule_from_cache(superproject, &null_oid, path);
173 strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path);
174 strbuf_repo_worktree_path(&worktree, superproject, "%s", path);
176 if (repo_init(submodule, gitdir.buf, worktree.buf)) {
178 * If initilization fails then it may be due to the submodule
179 * not being populated in the superproject's worktree. Instead
180 * we can try to initilize the submodule by finding it's gitdir
181 * in the superproject's 'modules' directory. In this case the
182 * submodule would not have a worktree.
184 strbuf_reset(&gitdir);
185 strbuf_repo_git_path(&gitdir, superproject,
186 "modules/%s", sub->name);
188 if (repo_init(submodule, gitdir.buf, NULL)) {
194 submodule->submodule_prefix = xstrfmt("%s%s/",
195 superproject->submodule_prefix ?
196 superproject->submodule_prefix :
200 strbuf_release(&gitdir);
201 strbuf_release(&worktree);
205 void repo_clear(struct repository *repo)
209 free(repo->commondir);
210 repo->commondir = NULL;
211 free(repo->objectdir);
212 repo->objectdir = NULL;
213 free(repo->graft_file);
214 repo->graft_file = NULL;
215 free(repo->index_file);
216 repo->index_file = NULL;
217 free(repo->worktree);
218 repo->worktree = NULL;
219 free(repo->submodule_prefix);
220 repo->submodule_prefix = NULL;
223 git_configset_clear(repo->config);
228 if (repo->submodule_cache) {
229 submodule_cache_free(repo->submodule_cache);
230 repo->submodule_cache = NULL;
234 discard_index(repo->index);
240 int repo_read_index(struct repository *repo)
243 repo->index = xcalloc(1, sizeof(*repo->index));
245 return read_index_from(repo->index, repo->index_file);