Merge branch 'rs/simplify-by-deco-with-deco-refs-exclude'
[git/git.git] / repository.h
1 #ifndef REPOSITORY_H
2 #define REPOSITORY_H
3
4 #include "path.h"
5
6 struct config_set;
7 struct git_hash_algo;
8 struct index_state;
9 struct lock_file;
10 struct pathspec;
11 struct raw_object_store;
12 struct submodule_cache;
13
14 enum untracked_cache_setting {
15 UNTRACKED_CACHE_UNSET = -1,
16 UNTRACKED_CACHE_REMOVE = 0,
17 UNTRACKED_CACHE_KEEP = 1,
18 UNTRACKED_CACHE_WRITE = 2
19 };
20
21 enum fetch_negotiation_setting {
22 FETCH_NEGOTIATION_UNSET = -1,
23 FETCH_NEGOTIATION_NONE = 0,
24 FETCH_NEGOTIATION_DEFAULT = 1,
25 FETCH_NEGOTIATION_SKIPPING = 2,
26 };
27
28 struct repo_settings {
29 int initialized;
30
31 int core_commit_graph;
32 int gc_write_commit_graph;
33 int fetch_write_commit_graph;
34
35 int index_version;
36 enum untracked_cache_setting core_untracked_cache;
37
38 int pack_use_sparse;
39 enum fetch_negotiation_setting fetch_negotiation_algorithm;
40 };
41
42 struct repository {
43 /* Environment */
44 /*
45 * Path to the git directory.
46 * Cannot be NULL after initialization.
47 */
48 char *gitdir;
49
50 /*
51 * Path to the common git directory.
52 * Cannot be NULL after initialization.
53 */
54 char *commondir;
55
56 /*
57 * Holds any information related to accessing the raw object content.
58 */
59 struct raw_object_store *objects;
60
61 /*
62 * All objects in this repository that have been parsed. This structure
63 * owns all objects it references, so users of "struct object *"
64 * generally do not need to free them; instead, when a repository is no
65 * longer used, call parsed_object_pool_clear() on this structure, which
66 * is called by the repositories repo_clear on its desconstruction.
67 */
68 struct parsed_object_pool *parsed_objects;
69
70 /* The store in which the refs are held. */
71 struct ref_store *refs;
72
73 /*
74 * Contains path to often used file names.
75 */
76 struct path_cache cached_paths;
77
78 /*
79 * Path to the repository's graft file.
80 * Cannot be NULL after initialization.
81 */
82 char *graft_file;
83
84 /*
85 * Path to the current worktree's index file.
86 * Cannot be NULL after initialization.
87 */
88 char *index_file;
89
90 /*
91 * Path to the working directory.
92 * A NULL value indicates that there is no working directory.
93 */
94 char *worktree;
95
96 /*
97 * Path from the root of the top-level superproject down to this
98 * repository. This is only non-NULL if the repository is initialized
99 * as a submodule of another repository.
100 */
101 char *submodule_prefix;
102
103 struct repo_settings settings;
104
105 /* Subsystems */
106 /*
107 * Repository's config which contains key-value pairs from the usual
108 * set of config files (i.e. repo specific .git/config, user wide
109 * ~/.gitconfig, XDG config file and the global /etc/gitconfig)
110 */
111 struct config_set *config;
112
113 /* Repository's submodule config as defined by '.gitmodules' */
114 struct submodule_cache *submodule_cache;
115
116 /*
117 * Repository's in-memory index.
118 * 'repo_read_index()' can be used to populate 'index'.
119 */
120 struct index_state *index;
121
122 /* Repository's current hash algorithm, as serialized on disk. */
123 const struct git_hash_algo *hash_algo;
124
125 /* A unique-id for tracing purposes. */
126 int trace2_repo_id;
127
128 /* Configurations */
129
130 /* Indicate if a repository has a different 'commondir' from 'gitdir' */
131 unsigned different_commondir:1;
132 };
133
134 extern struct repository *the_repository;
135
136 /*
137 * Define a custom repository layout. Any field can be NULL, which
138 * will default back to the path according to the default layout.
139 */
140 struct set_gitdir_args {
141 const char *commondir;
142 const char *object_dir;
143 const char *graft_file;
144 const char *index_file;
145 const char *alternate_db;
146 };
147
148 void repo_set_gitdir(struct repository *repo, const char *root,
149 const struct set_gitdir_args *extra_args);
150 void repo_set_worktree(struct repository *repo, const char *path);
151 void repo_set_hash_algo(struct repository *repo, int algo);
152 void initialize_the_repository(void);
153 int repo_init(struct repository *r, const char *gitdir, const char *worktree);
154
155 /*
156 * Initialize the repository 'subrepo' as the submodule given by the
157 * struct submodule 'sub' in parent repository 'superproject'.
158 * Return 0 upon success and a non-zero value upon failure, which may happen
159 * if the submodule is not found, or 'sub' is NULL.
160 */
161 struct submodule;
162 int repo_submodule_init(struct repository *subrepo,
163 struct repository *superproject,
164 const struct submodule *sub);
165 void repo_clear(struct repository *repo);
166
167 /*
168 * Populates the repository's index from its index_file, an index struct will
169 * be allocated if needed.
170 *
171 * Return the number of index entries in the populated index or a value less
172 * than zero if an error occured. If the repository's index has already been
173 * populated then the number of entries will simply be returned.
174 */
175 int repo_read_index(struct repository *repo);
176 int repo_hold_locked_index(struct repository *repo,
177 struct lock_file *lf,
178 int flags);
179
180 int repo_read_index_preload(struct repository *,
181 const struct pathspec *pathspec,
182 unsigned refresh_flags);
183 int repo_read_index_unmerged(struct repository *);
184 /*
185 * Opportunistically update the index but do not complain if we can't.
186 * The lockfile is always committed or rolled back.
187 */
188 void repo_update_index_if_able(struct repository *, struct lock_file *);
189
190 void prepare_repo_settings(struct repository *r);
191
192 #endif /* REPOSITORY_H */