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Commit | Line | Data |
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359efeff BW |
1 | #include "cache.h" |
2 | #include "repository.h" | |
90c62155 | 3 | #include "object-store.h" |
3b256228 | 4 | #include "config.h" |
99bf115c | 5 | #include "object.h" |
bf12fcdf | 6 | #include "submodule-config.h" |
359efeff BW |
7 | |
8 | /* The main repository */ | |
b2f0ecee NTND |
9 | static struct repository the_repo; |
10 | struct repository *the_repository; | |
11 | ||
12 | void initialize_the_repository(void) | |
13 | { | |
14 | the_repository = &the_repo; | |
15 | ||
16 | the_repo.index = &the_index; | |
90c62155 | 17 | the_repo.objects = raw_object_store_new(); |
99bf115c SB |
18 | the_repo.parsed_objects = parsed_object_pool_new(); |
19 | ||
b2f0ecee NTND |
20 | repo_set_hash_algo(&the_repo, GIT_HASH_SHA1); |
21 | } | |
359efeff | 22 | |
357a03eb NTND |
23 | static void expand_base_dir(char **out, const char *in, |
24 | const char *base_dir, const char *def_in) | |
25 | { | |
26 | free(*out); | |
27 | if (in) | |
28 | *out = xstrdup(in); | |
29 | else | |
30 | *out = xstrfmt("%s/%s", base_dir, def_in); | |
31 | } | |
32 | ||
33 | static void repo_set_commondir(struct repository *repo, | |
34 | const char *commondir) | |
359efeff BW |
35 | { |
36 | struct strbuf sb = STRBUF_INIT; | |
37 | ||
f9b7573f | 38 | free(repo->commondir); |
357a03eb NTND |
39 | |
40 | if (commondir) { | |
41 | repo->different_commondir = 1; | |
42 | repo->commondir = xstrdup(commondir); | |
43 | return; | |
44 | } | |
45 | ||
46 | repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir); | |
359efeff | 47 | repo->commondir = strbuf_detach(&sb, NULL); |
359efeff BW |
48 | } |
49 | ||
357a03eb NTND |
50 | void repo_set_gitdir(struct repository *repo, |
51 | const char *root, | |
52 | const struct set_gitdir_args *o) | |
359efeff | 53 | { |
357a03eb NTND |
54 | const char *gitfile = read_gitfile(root); |
55 | /* | |
56 | * repo->gitdir is saved because the caller could pass "root" | |
57 | * that also points to repo->gitdir. We want to keep it alive | |
58 | * until after xstrdup(root). Then we can free it. | |
59 | */ | |
1fb2b636 | 60 | char *old_gitdir = repo->gitdir; |
359efeff | 61 | |
357a03eb | 62 | repo->gitdir = xstrdup(gitfile ? gitfile : root); |
1fb2b636 | 63 | free(old_gitdir); |
357a03eb NTND |
64 | |
65 | repo_set_commondir(repo, o->commondir); | |
f0eaf638 JK |
66 | |
67 | if (!repo->objects->odb) { | |
68 | repo->objects->odb = xcalloc(1, sizeof(*repo->objects->odb)); | |
69 | repo->objects->odb_tail = &repo->objects->odb->next; | |
70 | } | |
71 | expand_base_dir(&repo->objects->odb->path, o->object_dir, | |
357a03eb | 72 | repo->commondir, "objects"); |
f0eaf638 | 73 | |
90c62155 SB |
74 | free(repo->objects->alternate_db); |
75 | repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); | |
357a03eb NTND |
76 | expand_base_dir(&repo->graft_file, o->graft_file, |
77 | repo->commondir, "info/grafts"); | |
78 | expand_base_dir(&repo->index_file, o->index_file, | |
79 | repo->gitdir, "index"); | |
359efeff BW |
80 | } |
81 | ||
78a67668 | 82 | void repo_set_hash_algo(struct repository *repo, int hash_algo) |
83 | { | |
84 | repo->hash_algo = &hash_algos[hash_algo]; | |
85 | } | |
86 | ||
359efeff BW |
87 | /* |
88 | * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. | |
89 | * Return 0 upon success and a non-zero value upon failure. | |
90 | */ | |
91 | static int repo_init_gitdir(struct repository *repo, const char *gitdir) | |
92 | { | |
93 | int ret = 0; | |
94 | int error = 0; | |
95 | char *abspath = NULL; | |
96 | const char *resolved_gitdir; | |
357a03eb | 97 | struct set_gitdir_args args = { NULL }; |
359efeff BW |
98 | |
99 | abspath = real_pathdup(gitdir, 0); | |
100 | if (!abspath) { | |
101 | ret = -1; | |
102 | goto out; | |
103 | } | |
104 | ||
105 | /* 'gitdir' must reference the gitdir directly */ | |
106 | resolved_gitdir = resolve_gitdir_gently(abspath, &error); | |
107 | if (!resolved_gitdir) { | |
108 | ret = -1; | |
109 | goto out; | |
110 | } | |
111 | ||
357a03eb | 112 | repo_set_gitdir(repo, resolved_gitdir, &args); |
359efeff BW |
113 | |
114 | out: | |
115 | free(abspath); | |
116 | return ret; | |
117 | } | |
118 | ||
119 | void repo_set_worktree(struct repository *repo, const char *path) | |
120 | { | |
121 | repo->worktree = real_pathdup(path, 1); | |
122 | } | |
123 | ||
124 | static int read_and_verify_repository_format(struct repository_format *format, | |
125 | const char *commondir) | |
126 | { | |
127 | int ret = 0; | |
128 | struct strbuf sb = STRBUF_INIT; | |
129 | ||
130 | strbuf_addf(&sb, "%s/config", commondir); | |
131 | read_repository_format(format, sb.buf); | |
132 | strbuf_reset(&sb); | |
133 | ||
134 | if (verify_repository_format(format, &sb) < 0) { | |
135 | warning("%s", sb.buf); | |
136 | ret = -1; | |
137 | } | |
138 | ||
139 | strbuf_release(&sb); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | /* | |
144 | * Initialize 'repo' based on the provided 'gitdir'. | |
145 | * Return 0 upon success and a non-zero value upon failure. | |
146 | */ | |
da62f786 SB |
147 | int repo_init(struct repository *repo, |
148 | const char *gitdir, | |
149 | const char *worktree) | |
359efeff BW |
150 | { |
151 | struct repository_format format; | |
152 | memset(repo, 0, sizeof(*repo)); | |
153 | ||
90c62155 | 154 | repo->objects = raw_object_store_new(); |
99bf115c | 155 | repo->parsed_objects = parsed_object_pool_new(); |
90c62155 | 156 | |
359efeff BW |
157 | if (repo_init_gitdir(repo, gitdir)) |
158 | goto error; | |
159 | ||
160 | if (read_and_verify_repository_format(&format, repo->commondir)) | |
161 | goto error; | |
162 | ||
78a67668 | 163 | repo_set_hash_algo(repo, format.hash_algo); |
164 | ||
359efeff BW |
165 | if (worktree) |
166 | repo_set_worktree(repo, worktree); | |
167 | ||
168 | return 0; | |
169 | ||
170 | error: | |
171 | repo_clear(repo); | |
172 | return -1; | |
173 | } | |
174 | ||
96dc883b BW |
175 | /* |
176 | * Initialize 'submodule' as the submodule given by 'path' in parent repository | |
177 | * 'superproject'. | |
178 | * Return 0 upon success and a non-zero value upon failure. | |
179 | */ | |
180 | int repo_submodule_init(struct repository *submodule, | |
181 | struct repository *superproject, | |
182 | const char *path) | |
183 | { | |
184 | const struct submodule *sub; | |
185 | struct strbuf gitdir = STRBUF_INIT; | |
186 | struct strbuf worktree = STRBUF_INIT; | |
187 | int ret = 0; | |
188 | ||
0c89fdd7 | 189 | sub = submodule_from_path(superproject, &null_oid, path); |
96dc883b BW |
190 | if (!sub) { |
191 | ret = -1; | |
192 | goto out; | |
193 | } | |
194 | ||
195 | strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path); | |
196 | strbuf_repo_worktree_path(&worktree, superproject, "%s", path); | |
197 | ||
198 | if (repo_init(submodule, gitdir.buf, worktree.buf)) { | |
199 | /* | |
200 | * If initilization fails then it may be due to the submodule | |
201 | * not being populated in the superproject's worktree. Instead | |
202 | * we can try to initilize the submodule by finding it's gitdir | |
203 | * in the superproject's 'modules' directory. In this case the | |
204 | * submodule would not have a worktree. | |
205 | */ | |
206 | strbuf_reset(&gitdir); | |
207 | strbuf_repo_git_path(&gitdir, superproject, | |
208 | "modules/%s", sub->name); | |
209 | ||
210 | if (repo_init(submodule, gitdir.buf, NULL)) { | |
211 | ret = -1; | |
212 | goto out; | |
213 | } | |
214 | } | |
215 | ||
216 | submodule->submodule_prefix = xstrfmt("%s%s/", | |
217 | superproject->submodule_prefix ? | |
218 | superproject->submodule_prefix : | |
219 | "", path); | |
220 | ||
221 | out: | |
222 | strbuf_release(&gitdir); | |
223 | strbuf_release(&worktree); | |
224 | return ret; | |
225 | } | |
226 | ||
359efeff BW |
227 | void repo_clear(struct repository *repo) |
228 | { | |
90dd04aa RS |
229 | FREE_AND_NULL(repo->gitdir); |
230 | FREE_AND_NULL(repo->commondir); | |
90dd04aa RS |
231 | FREE_AND_NULL(repo->graft_file); |
232 | FREE_AND_NULL(repo->index_file); | |
233 | FREE_AND_NULL(repo->worktree); | |
234 | FREE_AND_NULL(repo->submodule_prefix); | |
3b256228 | 235 | |
90c62155 SB |
236 | raw_object_store_clear(repo->objects); |
237 | FREE_AND_NULL(repo->objects); | |
238 | ||
99bf115c SB |
239 | parsed_object_pool_clear(repo->parsed_objects); |
240 | FREE_AND_NULL(repo->parsed_objects); | |
241 | ||
3b256228 BW |
242 | if (repo->config) { |
243 | git_configset_clear(repo->config); | |
90dd04aa | 244 | FREE_AND_NULL(repo->config); |
3b256228 | 245 | } |
639e30b5 | 246 | |
bf12fcdf BW |
247 | if (repo->submodule_cache) { |
248 | submodule_cache_free(repo->submodule_cache); | |
249 | repo->submodule_cache = NULL; | |
250 | } | |
251 | ||
639e30b5 BW |
252 | if (repo->index) { |
253 | discard_index(repo->index); | |
74373b5f NTND |
254 | if (repo->index != &the_index) |
255 | FREE_AND_NULL(repo->index); | |
639e30b5 BW |
256 | } |
257 | } | |
258 | ||
259 | int repo_read_index(struct repository *repo) | |
260 | { | |
261 | if (!repo->index) | |
262 | repo->index = xcalloc(1, sizeof(*repo->index)); | |
639e30b5 | 263 | |
a125a223 | 264 | return read_index_from(repo->index, repo->index_file, repo->gitdir); |
359efeff | 265 | } |