2 #include "repository.h"
4 #include "submodule-config.h"
6 /* The main repository */
7 static struct repository the_repo;
8 struct repository *the_repository = &the_repo;
10 static char *git_path_from_env(const char *envvar, const char *git_dir,
11 const char *path, int fromenv)
14 const char *value = getenv(envvar);
16 return xstrdup(value);
19 return xstrfmt("%s/%s", git_dir, path);
22 static int find_common_dir(struct strbuf *sb, const char *gitdir, int fromenv)
25 const char *value = getenv(GIT_COMMON_DIR_ENVIRONMENT);
27 strbuf_addstr(sb, value);
32 return get_common_dir_noenv(sb, gitdir);
35 static void repo_setup_env(struct repository *repo)
37 struct strbuf sb = STRBUF_INIT;
39 repo->different_commondir = find_common_dir(&sb, repo->gitdir,
41 repo->commondir = strbuf_detach(&sb, NULL);
42 repo->objectdir = git_path_from_env(DB_ENVIRONMENT, repo->commondir,
43 "objects", !repo->ignore_env);
44 repo->graft_file = git_path_from_env(GRAFT_ENVIRONMENT, repo->commondir,
45 "info/grafts", !repo->ignore_env);
46 repo->index_file = git_path_from_env(INDEX_ENVIRONMENT, repo->gitdir,
47 "index", !repo->ignore_env);
50 void repo_set_gitdir(struct repository *repo, const char *path)
52 const char *gitfile = read_gitfile(path);
55 * NEEDSWORK: Eventually we want to be able to free gitdir and the rest
56 * of the environment before reinitializing it again, but we have some
57 * crazy code paths where we try to set gitdir with the current gitdir
58 * and we don't want to free gitdir before copying the passed in value.
60 repo->gitdir = xstrdup(gitfile ? gitfile : path);
66 * Attempt to resolve and set the provided 'gitdir' for repository 'repo'.
67 * Return 0 upon success and a non-zero value upon failure.
69 static int repo_init_gitdir(struct repository *repo, const char *gitdir)
74 const char *resolved_gitdir;
76 abspath = real_pathdup(gitdir, 0);
82 /* 'gitdir' must reference the gitdir directly */
83 resolved_gitdir = resolve_gitdir_gently(abspath, &error);
84 if (!resolved_gitdir) {
89 repo_set_gitdir(repo, resolved_gitdir);
96 void repo_set_worktree(struct repository *repo, const char *path)
98 repo->worktree = real_pathdup(path, 1);
101 static int read_and_verify_repository_format(struct repository_format *format,
102 const char *commondir)
105 struct strbuf sb = STRBUF_INIT;
107 strbuf_addf(&sb, "%s/config", commondir);
108 read_repository_format(format, sb.buf);
111 if (verify_repository_format(format, &sb) < 0) {
112 warning("%s", sb.buf);
121 * Initialize 'repo' based on the provided 'gitdir'.
122 * Return 0 upon success and a non-zero value upon failure.
124 int repo_init(struct repository *repo, const char *gitdir, const char *worktree)
126 struct repository_format format;
127 memset(repo, 0, sizeof(*repo));
129 repo->ignore_env = 1;
131 if (repo_init_gitdir(repo, gitdir))
134 if (read_and_verify_repository_format(&format, repo->commondir))
138 repo_set_worktree(repo, worktree);
148 * Initialize 'submodule' as the submodule given by 'path' in parent repository
150 * Return 0 upon success and a non-zero value upon failure.
152 int repo_submodule_init(struct repository *submodule,
153 struct repository *superproject,
156 const struct submodule *sub;
157 struct strbuf gitdir = STRBUF_INIT;
158 struct strbuf worktree = STRBUF_INIT;
161 sub = submodule_from_cache(superproject, &null_oid, path);
167 strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path);
168 strbuf_repo_worktree_path(&worktree, superproject, "%s", path);
170 if (repo_init(submodule, gitdir.buf, worktree.buf)) {
172 * If initilization fails then it may be due to the submodule
173 * not being populated in the superproject's worktree. Instead
174 * we can try to initilize the submodule by finding it's gitdir
175 * in the superproject's 'modules' directory. In this case the
176 * submodule would not have a worktree.
178 strbuf_reset(&gitdir);
179 strbuf_repo_git_path(&gitdir, superproject,
180 "modules/%s", sub->name);
182 if (repo_init(submodule, gitdir.buf, NULL)) {
188 submodule->submodule_prefix = xstrfmt("%s%s/",
189 superproject->submodule_prefix ?
190 superproject->submodule_prefix :
194 strbuf_release(&gitdir);
195 strbuf_release(&worktree);
199 void repo_clear(struct repository *repo)
203 free(repo->commondir);
204 repo->commondir = NULL;
205 free(repo->objectdir);
206 repo->objectdir = NULL;
207 free(repo->graft_file);
208 repo->graft_file = NULL;
209 free(repo->index_file);
210 repo->index_file = NULL;
211 free(repo->worktree);
212 repo->worktree = NULL;
213 free(repo->submodule_prefix);
214 repo->submodule_prefix = NULL;
217 git_configset_clear(repo->config);
222 if (repo->submodule_cache) {
223 submodule_cache_free(repo->submodule_cache);
224 repo->submodule_cache = NULL;
228 discard_index(repo->index);
234 int repo_read_index(struct repository *repo)
237 repo->index = xcalloc(1, sizeof(*repo->index));
239 discard_index(repo->index);
241 return read_index_from(repo->index, repo->index_file);