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 repo->commondir = strbuf_detach(&sb, NULL);
44 repo->objectdir = git_path_from_env(DB_ENVIRONMENT, repo->commondir,
45 "objects", !repo->ignore_env);
46 repo->graft_file = git_path_from_env(GRAFT_ENVIRONMENT, repo->commondir,
47 "info/grafts", !repo->ignore_env);
48 repo->index_file = git_path_from_env(INDEX_ENVIRONMENT, repo->gitdir,
49 "index", !repo->ignore_env);
52 void repo_set_gitdir(struct repository *repo, const char *path)
54 const char *gitfile = read_gitfile(path);
57 * NEEDSWORK: Eventually we want to be able to free gitdir and the rest
58 * of the environment before reinitializing it again, but we have some
59 * crazy code paths where we try to set gitdir with the current gitdir
60 * and we don't want to free gitdir before copying the passed in value.
62 repo->gitdir = xstrdup(gitfile ? gitfile : path);
68 * Attempt to resolve and set the provided 'gitdir' for repository 'repo'.
69 * Return 0 upon success and a non-zero value upon failure.
71 static int repo_init_gitdir(struct repository *repo, const char *gitdir)
76 const char *resolved_gitdir;
78 abspath = real_pathdup(gitdir, 0);
84 /* 'gitdir' must reference the gitdir directly */
85 resolved_gitdir = resolve_gitdir_gently(abspath, &error);
86 if (!resolved_gitdir) {
91 repo_set_gitdir(repo, resolved_gitdir);
98 void repo_set_worktree(struct repository *repo, const char *path)
100 repo->worktree = real_pathdup(path, 1);
103 static int read_and_verify_repository_format(struct repository_format *format,
104 const char *commondir)
107 struct strbuf sb = STRBUF_INIT;
109 strbuf_addf(&sb, "%s/config", commondir);
110 read_repository_format(format, sb.buf);
113 if (verify_repository_format(format, &sb) < 0) {
114 warning("%s", sb.buf);
123 * Initialize 'repo' based on the provided 'gitdir'.
124 * Return 0 upon success and a non-zero value upon failure.
126 int repo_init(struct repository *repo, const char *gitdir, const char *worktree)
128 struct repository_format format;
129 memset(repo, 0, sizeof(*repo));
131 repo->ignore_env = 1;
133 if (repo_init_gitdir(repo, gitdir))
136 if (read_and_verify_repository_format(&format, repo->commondir))
140 repo_set_worktree(repo, worktree);
150 * Initialize 'submodule' as the submodule given by 'path' in parent repository
152 * Return 0 upon success and a non-zero value upon failure.
154 int repo_submodule_init(struct repository *submodule,
155 struct repository *superproject,
158 const struct submodule *sub;
159 struct strbuf gitdir = STRBUF_INIT;
160 struct strbuf worktree = STRBUF_INIT;
163 sub = submodule_from_cache(superproject, &null_oid, path);
169 strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path);
170 strbuf_repo_worktree_path(&worktree, superproject, "%s", path);
172 if (repo_init(submodule, gitdir.buf, worktree.buf)) {
174 * If initilization fails then it may be due to the submodule
175 * not being populated in the superproject's worktree. Instead
176 * we can try to initilize the submodule by finding it's gitdir
177 * in the superproject's 'modules' directory. In this case the
178 * submodule would not have a worktree.
180 strbuf_reset(&gitdir);
181 strbuf_repo_git_path(&gitdir, superproject,
182 "modules/%s", sub->name);
184 if (repo_init(submodule, gitdir.buf, NULL)) {
190 submodule->submodule_prefix = xstrfmt("%s%s/",
191 superproject->submodule_prefix ?
192 superproject->submodule_prefix :
196 strbuf_release(&gitdir);
197 strbuf_release(&worktree);
201 void repo_clear(struct repository *repo)
205 free(repo->commondir);
206 repo->commondir = NULL;
207 free(repo->objectdir);
208 repo->objectdir = NULL;
209 free(repo->graft_file);
210 repo->graft_file = NULL;
211 free(repo->index_file);
212 repo->index_file = NULL;
213 free(repo->worktree);
214 repo->worktree = NULL;
215 free(repo->submodule_prefix);
216 repo->submodule_prefix = NULL;
219 git_configset_clear(repo->config);
224 if (repo->submodule_cache) {
225 submodule_cache_free(repo->submodule_cache);
226 repo->submodule_cache = NULL;
230 discard_index(repo->index);
236 int repo_read_index(struct repository *repo)
239 repo->index = xcalloc(1, sizeof(*repo->index));
241 return read_index_from(repo->index, repo->index_file);