notes-utils.c: remove the_repository references
[git/git.git] / repository.c
CommitLineData
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"
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7
8/* The main repository */
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NTND
9static struct repository the_repo;
10struct repository *the_repository;
11
12void 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();
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18 the_repo.parsed_objects = parsed_object_pool_new();
19
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NTND
20 repo_set_hash_algo(&the_repo, GIT_HASH_SHA1);
21}
359efeff 22
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NTND
23static 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
33static void repo_set_commondir(struct repository *repo,
34 const char *commondir)
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35{
36 struct strbuf sb = STRBUF_INIT;
37
f9b7573f 38 free(repo->commondir);
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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);
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48}
49
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NTND
50void repo_set_gitdir(struct repository *repo,
51 const char *root,
52 const struct set_gitdir_args *o)
359efeff 53{
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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);
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64
65 repo_set_commondir(repo, o->commondir);
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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
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74 free(repo->objects->alternate_db);
75 repo->objects->alternate_db = xstrdup_or_null(o->alternate_db);
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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");
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80}
81
78a67668 82void repo_set_hash_algo(struct repository *repo, int hash_algo)
83{
84 repo->hash_algo = &hash_algos[hash_algo];
85}
86
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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 */
91static 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 };
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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);
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113
114out:
115 free(abspath);
116 return ret;
117}
118
119void repo_set_worktree(struct repository *repo, const char *path)
120{
121 repo->worktree = real_pathdup(path, 1);
122}
123
124static 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 */
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147int repo_init(struct repository *repo,
148 const char *gitdir,
149 const char *worktree)
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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
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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
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165 if (worktree)
166 repo_set_worktree(repo, worktree);
167
168 return 0;
169
170error:
171 repo_clear(repo);
172 return -1;
173}
174
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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 */
180int 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);
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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
221out:
222 strbuf_release(&gitdir);
223 strbuf_release(&worktree);
224 return ret;
225}
226
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227void repo_clear(struct repository *repo)
228{
90dd04aa
RS
229 FREE_AND_NULL(repo->gitdir);
230 FREE_AND_NULL(repo->commondir);
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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
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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
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BW
242 if (repo->config) {
243 git_configset_clear(repo->config);
90dd04aa 244 FREE_AND_NULL(repo->config);
3b256228 245 }
639e30b5 246
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BW
247 if (repo->submodule_cache) {
248 submodule_cache_free(repo->submodule_cache);
249 repo->submodule_cache = NULL;
250 }
251
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252 if (repo->index) {
253 discard_index(repo->index);
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NTND
254 if (repo->index != &the_index)
255 FREE_AND_NULL(repo->index);
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256 }
257}
258
259int 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}