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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); | |
90c62155 | 66 | expand_base_dir(&repo->objects->objectdir, o->object_dir, |
357a03eb | 67 | repo->commondir, "objects"); |
90c62155 SB |
68 | free(repo->objects->alternate_db); |
69 | repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); | |
357a03eb NTND |
70 | expand_base_dir(&repo->graft_file, o->graft_file, |
71 | repo->commondir, "info/grafts"); | |
72 | expand_base_dir(&repo->index_file, o->index_file, | |
73 | repo->gitdir, "index"); | |
359efeff BW |
74 | } |
75 | ||
78a67668 | 76 | void repo_set_hash_algo(struct repository *repo, int hash_algo) |
77 | { | |
78 | repo->hash_algo = &hash_algos[hash_algo]; | |
79 | } | |
80 | ||
359efeff BW |
81 | /* |
82 | * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. | |
83 | * Return 0 upon success and a non-zero value upon failure. | |
84 | */ | |
85 | static int repo_init_gitdir(struct repository *repo, const char *gitdir) | |
86 | { | |
87 | int ret = 0; | |
88 | int error = 0; | |
89 | char *abspath = NULL; | |
90 | const char *resolved_gitdir; | |
357a03eb | 91 | struct set_gitdir_args args = { NULL }; |
359efeff BW |
92 | |
93 | abspath = real_pathdup(gitdir, 0); | |
94 | if (!abspath) { | |
95 | ret = -1; | |
96 | goto out; | |
97 | } | |
98 | ||
99 | /* 'gitdir' must reference the gitdir directly */ | |
100 | resolved_gitdir = resolve_gitdir_gently(abspath, &error); | |
101 | if (!resolved_gitdir) { | |
102 | ret = -1; | |
103 | goto out; | |
104 | } | |
105 | ||
357a03eb | 106 | repo_set_gitdir(repo, resolved_gitdir, &args); |
359efeff BW |
107 | |
108 | out: | |
109 | free(abspath); | |
110 | return ret; | |
111 | } | |
112 | ||
113 | void repo_set_worktree(struct repository *repo, const char *path) | |
114 | { | |
115 | repo->worktree = real_pathdup(path, 1); | |
116 | } | |
117 | ||
118 | static int read_and_verify_repository_format(struct repository_format *format, | |
119 | const char *commondir) | |
120 | { | |
121 | int ret = 0; | |
122 | struct strbuf sb = STRBUF_INIT; | |
123 | ||
124 | strbuf_addf(&sb, "%s/config", commondir); | |
125 | read_repository_format(format, sb.buf); | |
126 | strbuf_reset(&sb); | |
127 | ||
128 | if (verify_repository_format(format, &sb) < 0) { | |
129 | warning("%s", sb.buf); | |
130 | ret = -1; | |
131 | } | |
132 | ||
133 | strbuf_release(&sb); | |
134 | return ret; | |
135 | } | |
136 | ||
137 | /* | |
138 | * Initialize 'repo' based on the provided 'gitdir'. | |
139 | * Return 0 upon success and a non-zero value upon failure. | |
140 | */ | |
da62f786 SB |
141 | int repo_init(struct repository *repo, |
142 | const char *gitdir, | |
143 | const char *worktree) | |
359efeff BW |
144 | { |
145 | struct repository_format format; | |
146 | memset(repo, 0, sizeof(*repo)); | |
147 | ||
90c62155 | 148 | repo->objects = raw_object_store_new(); |
99bf115c | 149 | repo->parsed_objects = parsed_object_pool_new(); |
90c62155 | 150 | |
359efeff BW |
151 | if (repo_init_gitdir(repo, gitdir)) |
152 | goto error; | |
153 | ||
154 | if (read_and_verify_repository_format(&format, repo->commondir)) | |
155 | goto error; | |
156 | ||
78a67668 | 157 | repo_set_hash_algo(repo, format.hash_algo); |
158 | ||
359efeff BW |
159 | if (worktree) |
160 | repo_set_worktree(repo, worktree); | |
161 | ||
162 | return 0; | |
163 | ||
164 | error: | |
165 | repo_clear(repo); | |
166 | return -1; | |
167 | } | |
168 | ||
96dc883b BW |
169 | /* |
170 | * Initialize 'submodule' as the submodule given by 'path' in parent repository | |
171 | * 'superproject'. | |
172 | * Return 0 upon success and a non-zero value upon failure. | |
173 | */ | |
174 | int repo_submodule_init(struct repository *submodule, | |
175 | struct repository *superproject, | |
176 | const char *path) | |
177 | { | |
178 | const struct submodule *sub; | |
179 | struct strbuf gitdir = STRBUF_INIT; | |
180 | struct strbuf worktree = STRBUF_INIT; | |
181 | int ret = 0; | |
182 | ||
0c89fdd7 | 183 | sub = submodule_from_path(superproject, &null_oid, path); |
96dc883b BW |
184 | if (!sub) { |
185 | ret = -1; | |
186 | goto out; | |
187 | } | |
188 | ||
189 | strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path); | |
190 | strbuf_repo_worktree_path(&worktree, superproject, "%s", path); | |
191 | ||
192 | if (repo_init(submodule, gitdir.buf, worktree.buf)) { | |
193 | /* | |
194 | * If initilization fails then it may be due to the submodule | |
195 | * not being populated in the superproject's worktree. Instead | |
196 | * we can try to initilize the submodule by finding it's gitdir | |
197 | * in the superproject's 'modules' directory. In this case the | |
198 | * submodule would not have a worktree. | |
199 | */ | |
200 | strbuf_reset(&gitdir); | |
201 | strbuf_repo_git_path(&gitdir, superproject, | |
202 | "modules/%s", sub->name); | |
203 | ||
204 | if (repo_init(submodule, gitdir.buf, NULL)) { | |
205 | ret = -1; | |
206 | goto out; | |
207 | } | |
208 | } | |
209 | ||
210 | submodule->submodule_prefix = xstrfmt("%s%s/", | |
211 | superproject->submodule_prefix ? | |
212 | superproject->submodule_prefix : | |
213 | "", path); | |
214 | ||
215 | out: | |
216 | strbuf_release(&gitdir); | |
217 | strbuf_release(&worktree); | |
218 | return ret; | |
219 | } | |
220 | ||
359efeff BW |
221 | void repo_clear(struct repository *repo) |
222 | { | |
90dd04aa RS |
223 | FREE_AND_NULL(repo->gitdir); |
224 | FREE_AND_NULL(repo->commondir); | |
90dd04aa RS |
225 | FREE_AND_NULL(repo->graft_file); |
226 | FREE_AND_NULL(repo->index_file); | |
227 | FREE_AND_NULL(repo->worktree); | |
228 | FREE_AND_NULL(repo->submodule_prefix); | |
3b256228 | 229 | |
90c62155 SB |
230 | raw_object_store_clear(repo->objects); |
231 | FREE_AND_NULL(repo->objects); | |
232 | ||
99bf115c SB |
233 | parsed_object_pool_clear(repo->parsed_objects); |
234 | FREE_AND_NULL(repo->parsed_objects); | |
235 | ||
3b256228 BW |
236 | if (repo->config) { |
237 | git_configset_clear(repo->config); | |
90dd04aa | 238 | FREE_AND_NULL(repo->config); |
3b256228 | 239 | } |
639e30b5 | 240 | |
bf12fcdf BW |
241 | if (repo->submodule_cache) { |
242 | submodule_cache_free(repo->submodule_cache); | |
243 | repo->submodule_cache = NULL; | |
244 | } | |
245 | ||
639e30b5 BW |
246 | if (repo->index) { |
247 | discard_index(repo->index); | |
74373b5f NTND |
248 | if (repo->index != &the_index) |
249 | FREE_AND_NULL(repo->index); | |
639e30b5 BW |
250 | } |
251 | } | |
252 | ||
253 | int repo_read_index(struct repository *repo) | |
254 | { | |
255 | if (!repo->index) | |
256 | repo->index = xcalloc(1, sizeof(*repo->index)); | |
639e30b5 | 257 | |
a125a223 | 258 | return read_index_from(repo->index, repo->index_file, repo->gitdir); |
359efeff | 259 | } |