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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" |
bf12fcdf | 5 | #include "submodule-config.h" |
359efeff BW |
6 | |
7 | /* The main repository */ | |
b2f0ecee NTND |
8 | static struct repository the_repo; |
9 | struct repository *the_repository; | |
10 | ||
11 | void initialize_the_repository(void) | |
12 | { | |
13 | the_repository = &the_repo; | |
14 | ||
15 | the_repo.index = &the_index; | |
90c62155 | 16 | the_repo.objects = raw_object_store_new(); |
b2f0ecee NTND |
17 | repo_set_hash_algo(&the_repo, GIT_HASH_SHA1); |
18 | } | |
359efeff | 19 | |
357a03eb NTND |
20 | static void expand_base_dir(char **out, const char *in, |
21 | const char *base_dir, const char *def_in) | |
22 | { | |
23 | free(*out); | |
24 | if (in) | |
25 | *out = xstrdup(in); | |
26 | else | |
27 | *out = xstrfmt("%s/%s", base_dir, def_in); | |
28 | } | |
29 | ||
30 | static void repo_set_commondir(struct repository *repo, | |
31 | const char *commondir) | |
359efeff BW |
32 | { |
33 | struct strbuf sb = STRBUF_INIT; | |
34 | ||
f9b7573f | 35 | free(repo->commondir); |
357a03eb NTND |
36 | |
37 | if (commondir) { | |
38 | repo->different_commondir = 1; | |
39 | repo->commondir = xstrdup(commondir); | |
40 | return; | |
41 | } | |
42 | ||
43 | repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir); | |
359efeff | 44 | repo->commondir = strbuf_detach(&sb, NULL); |
359efeff BW |
45 | } |
46 | ||
357a03eb NTND |
47 | void repo_set_gitdir(struct repository *repo, |
48 | const char *root, | |
49 | const struct set_gitdir_args *o) | |
359efeff | 50 | { |
357a03eb NTND |
51 | const char *gitfile = read_gitfile(root); |
52 | /* | |
53 | * repo->gitdir is saved because the caller could pass "root" | |
54 | * that also points to repo->gitdir. We want to keep it alive | |
55 | * until after xstrdup(root). Then we can free it. | |
56 | */ | |
1fb2b636 | 57 | char *old_gitdir = repo->gitdir; |
359efeff | 58 | |
357a03eb | 59 | repo->gitdir = xstrdup(gitfile ? gitfile : root); |
1fb2b636 | 60 | free(old_gitdir); |
357a03eb NTND |
61 | |
62 | repo_set_commondir(repo, o->commondir); | |
90c62155 | 63 | expand_base_dir(&repo->objects->objectdir, o->object_dir, |
357a03eb | 64 | repo->commondir, "objects"); |
90c62155 SB |
65 | free(repo->objects->alternate_db); |
66 | repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); | |
357a03eb NTND |
67 | expand_base_dir(&repo->graft_file, o->graft_file, |
68 | repo->commondir, "info/grafts"); | |
69 | expand_base_dir(&repo->index_file, o->index_file, | |
70 | repo->gitdir, "index"); | |
359efeff BW |
71 | } |
72 | ||
78a67668 | 73 | void repo_set_hash_algo(struct repository *repo, int hash_algo) |
74 | { | |
75 | repo->hash_algo = &hash_algos[hash_algo]; | |
76 | } | |
77 | ||
359efeff BW |
78 | /* |
79 | * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. | |
80 | * Return 0 upon success and a non-zero value upon failure. | |
81 | */ | |
82 | static int repo_init_gitdir(struct repository *repo, const char *gitdir) | |
83 | { | |
84 | int ret = 0; | |
85 | int error = 0; | |
86 | char *abspath = NULL; | |
87 | const char *resolved_gitdir; | |
357a03eb | 88 | struct set_gitdir_args args = { NULL }; |
359efeff BW |
89 | |
90 | abspath = real_pathdup(gitdir, 0); | |
91 | if (!abspath) { | |
92 | ret = -1; | |
93 | goto out; | |
94 | } | |
95 | ||
96 | /* 'gitdir' must reference the gitdir directly */ | |
97 | resolved_gitdir = resolve_gitdir_gently(abspath, &error); | |
98 | if (!resolved_gitdir) { | |
99 | ret = -1; | |
100 | goto out; | |
101 | } | |
102 | ||
357a03eb | 103 | repo_set_gitdir(repo, resolved_gitdir, &args); |
359efeff BW |
104 | |
105 | out: | |
106 | free(abspath); | |
107 | return ret; | |
108 | } | |
109 | ||
110 | void repo_set_worktree(struct repository *repo, const char *path) | |
111 | { | |
112 | repo->worktree = real_pathdup(path, 1); | |
113 | } | |
114 | ||
115 | static int read_and_verify_repository_format(struct repository_format *format, | |
116 | const char *commondir) | |
117 | { | |
118 | int ret = 0; | |
119 | struct strbuf sb = STRBUF_INIT; | |
120 | ||
121 | strbuf_addf(&sb, "%s/config", commondir); | |
122 | read_repository_format(format, sb.buf); | |
123 | strbuf_reset(&sb); | |
124 | ||
125 | if (verify_repository_format(format, &sb) < 0) { | |
126 | warning("%s", sb.buf); | |
127 | ret = -1; | |
128 | } | |
129 | ||
130 | strbuf_release(&sb); | |
131 | return ret; | |
132 | } | |
133 | ||
134 | /* | |
135 | * Initialize 'repo' based on the provided 'gitdir'. | |
136 | * Return 0 upon success and a non-zero value upon failure. | |
137 | */ | |
b2f0ecee NTND |
138 | static int repo_init(struct repository *repo, |
139 | const char *gitdir, | |
140 | const char *worktree) | |
359efeff BW |
141 | { |
142 | struct repository_format format; | |
143 | memset(repo, 0, sizeof(*repo)); | |
144 | ||
90c62155 SB |
145 | repo->objects = raw_object_store_new(); |
146 | ||
359efeff BW |
147 | if (repo_init_gitdir(repo, gitdir)) |
148 | goto error; | |
149 | ||
150 | if (read_and_verify_repository_format(&format, repo->commondir)) | |
151 | goto error; | |
152 | ||
78a67668 | 153 | repo_set_hash_algo(repo, format.hash_algo); |
154 | ||
359efeff BW |
155 | if (worktree) |
156 | repo_set_worktree(repo, worktree); | |
157 | ||
158 | return 0; | |
159 | ||
160 | error: | |
161 | repo_clear(repo); | |
162 | return -1; | |
163 | } | |
164 | ||
96dc883b BW |
165 | /* |
166 | * Initialize 'submodule' as the submodule given by 'path' in parent repository | |
167 | * 'superproject'. | |
168 | * Return 0 upon success and a non-zero value upon failure. | |
169 | */ | |
170 | int repo_submodule_init(struct repository *submodule, | |
171 | struct repository *superproject, | |
172 | const char *path) | |
173 | { | |
174 | const struct submodule *sub; | |
175 | struct strbuf gitdir = STRBUF_INIT; | |
176 | struct strbuf worktree = STRBUF_INIT; | |
177 | int ret = 0; | |
178 | ||
cd73de47 | 179 | sub = submodule_from_cache(superproject, &null_oid, path); |
96dc883b BW |
180 | if (!sub) { |
181 | ret = -1; | |
182 | goto out; | |
183 | } | |
184 | ||
185 | strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path); | |
186 | strbuf_repo_worktree_path(&worktree, superproject, "%s", path); | |
187 | ||
188 | if (repo_init(submodule, gitdir.buf, worktree.buf)) { | |
189 | /* | |
190 | * If initilization fails then it may be due to the submodule | |
191 | * not being populated in the superproject's worktree. Instead | |
192 | * we can try to initilize the submodule by finding it's gitdir | |
193 | * in the superproject's 'modules' directory. In this case the | |
194 | * submodule would not have a worktree. | |
195 | */ | |
196 | strbuf_reset(&gitdir); | |
197 | strbuf_repo_git_path(&gitdir, superproject, | |
198 | "modules/%s", sub->name); | |
199 | ||
200 | if (repo_init(submodule, gitdir.buf, NULL)) { | |
201 | ret = -1; | |
202 | goto out; | |
203 | } | |
204 | } | |
205 | ||
206 | submodule->submodule_prefix = xstrfmt("%s%s/", | |
207 | superproject->submodule_prefix ? | |
208 | superproject->submodule_prefix : | |
209 | "", path); | |
210 | ||
211 | out: | |
212 | strbuf_release(&gitdir); | |
213 | strbuf_release(&worktree); | |
214 | return ret; | |
215 | } | |
216 | ||
359efeff BW |
217 | void repo_clear(struct repository *repo) |
218 | { | |
90dd04aa RS |
219 | FREE_AND_NULL(repo->gitdir); |
220 | FREE_AND_NULL(repo->commondir); | |
90dd04aa RS |
221 | FREE_AND_NULL(repo->graft_file); |
222 | FREE_AND_NULL(repo->index_file); | |
223 | FREE_AND_NULL(repo->worktree); | |
224 | FREE_AND_NULL(repo->submodule_prefix); | |
3b256228 | 225 | |
90c62155 SB |
226 | raw_object_store_clear(repo->objects); |
227 | FREE_AND_NULL(repo->objects); | |
228 | ||
3b256228 BW |
229 | if (repo->config) { |
230 | git_configset_clear(repo->config); | |
90dd04aa | 231 | FREE_AND_NULL(repo->config); |
3b256228 | 232 | } |
639e30b5 | 233 | |
bf12fcdf BW |
234 | if (repo->submodule_cache) { |
235 | submodule_cache_free(repo->submodule_cache); | |
236 | repo->submodule_cache = NULL; | |
237 | } | |
238 | ||
639e30b5 BW |
239 | if (repo->index) { |
240 | discard_index(repo->index); | |
90dd04aa | 241 | FREE_AND_NULL(repo->index); |
639e30b5 BW |
242 | } |
243 | } | |
244 | ||
245 | int repo_read_index(struct repository *repo) | |
246 | { | |
247 | if (!repo->index) | |
248 | repo->index = xcalloc(1, sizeof(*repo->index)); | |
639e30b5 | 249 | |
a125a223 | 250 | return read_index_from(repo->index, repo->index_file, repo->gitdir); |
359efeff | 251 | } |