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 struct promisor_remote_config;
  14
  15 enum untracked_cache_setting {
  16         UNTRACKED_CACHE_UNSET = -1,
  17         UNTRACKED_CACHE_REMOVE = 0,
  18         UNTRACKED_CACHE_KEEP = 1,
  19         UNTRACKED_CACHE_WRITE = 2
  20 };
  21
  22 enum fetch_negotiation_setting {
  23         FETCH_NEGOTIATION_UNSET = -1,
  24         FETCH_NEGOTIATION_NONE = 0,
  25         FETCH_NEGOTIATION_DEFAULT = 1,
  26         FETCH_NEGOTIATION_SKIPPING = 2,
  27         FETCH_NEGOTIATION_NOOP = 3,
  28 };
  29
  30 struct repo_settings {
  31         int initialized;
  32
  33         int core_commit_graph;
  34         int commit_graph_read_changed_paths;
  35         int gc_write_commit_graph;
  36         int fetch_write_commit_graph;
  37
  38         int index_version;
  39         enum untracked_cache_setting core_untracked_cache;
  40
  41         int pack_use_sparse;
  42         enum fetch_negotiation_setting fetch_negotiation_algorithm;
  43
  44         int core_multi_pack_index;
  45
  46         unsigned command_requires_full_index:1,
  47                  sparse_index:1;
  48 };
  49
  50 struct repository {
  51         /* Environment */
  52         /*
  53          * Path to the git directory.
  54          * Cannot be NULL after initialization.
  55          */
  56         char *gitdir;
  57
  58         /*
  59          * Path to the common git directory.
  60          * Cannot be NULL after initialization.
  61          */
  62         char *commondir;
  63
  64         /*
  65          * Holds any information related to accessing the raw object content.
  66          */
  67         struct raw_object_store *objects;
  68
  69         /*
  70          * All objects in this repository that have been parsed. This structure
  71          * owns all objects it references, so users of "struct object *"
  72          * generally do not need to free them; instead, when a repository is no
  73          * longer used, call parsed_object_pool_clear() on this structure, which
  74          * is called by the repositories repo_clear on its desconstruction.
  75          */
  76         struct parsed_object_pool *parsed_objects;
  77
  78         /*
  79          * The store in which the refs are held. This should generally only be
  80          * accessed via get_main_ref_store(), as that will lazily initialize
  81          * the ref object.
  82          */
  83         struct ref_store *refs_private;
  84
  85         /*
  86          * Contains path to often used file names.
  87          */
  88         struct path_cache cached_paths;
  89
  90         /*
  91          * Path to the repository's graft file.
  92          * Cannot be NULL after initialization.
  93          */
  94         char *graft_file;
  95
  96         /*
  97          * Path to the current worktree's index file.
  98          * Cannot be NULL after initialization.
  99          */
 100         char *index_file;
 101
 102         /*
 103          * Path to the working directory.
 104          * A NULL value indicates that there is no working directory.
 105          */
 106         char *worktree;
 107
 108         /*
 109          * Path from the root of the top-level superproject down to this
 110          * repository.  This is only non-NULL if the repository is initialized
 111          * as a submodule of another repository.
 112          */
 113         char *submodule_prefix;
 114
 115         struct repo_settings settings;
 116
 117         /* Subsystems */
 118         /*
 119          * Repository's config which contains key-value pairs from the usual
 120          * set of config files (i.e. repo specific .git/config, user wide
 121          * ~/.gitconfig, XDG config file and the global /etc/gitconfig)
 122          */
 123         struct config_set *config;
 124
 125         /* Repository's submodule config as defined by '.gitmodules' */
 126         struct submodule_cache *submodule_cache;
 127
 128         /*
 129          * Repository's in-memory index.
 130          * 'repo_read_index()' can be used to populate 'index'.
 131          */
 132         struct index_state *index;
 133
 134         /* Repository's current hash algorithm, as serialized on disk. */
 135         const struct git_hash_algo *hash_algo;
 136
 137         /* A unique-id for tracing purposes. */
 138         int trace2_repo_id;
 139
 140         /* True if commit-graph has been disabled within this process. */
 141         int commit_graph_disabled;
 142
 143         /* Configurations related to promisor remotes. */
 144         char *repository_format_partial_clone;
 145         struct promisor_remote_config *promisor_remote_config;
 146
 147         /* Configurations */
 148
 149         /* Indicate if a repository has a different 'commondir' from 'gitdir' */
 150         unsigned different_commondir:1;
 151 };
 152
 153 extern struct repository *the_repository;
 154
 155 /*
 156  * Define a custom repository layout. Any field can be NULL, which
 157  * will default back to the path according to the default layout.
 158  */
 159 struct set_gitdir_args {
 160         const char *commondir;
 161         const char *object_dir;
 162         const char *graft_file;
 163         const char *index_file;
 164         const char *alternate_db;
 165 };
 166
 167 void repo_set_gitdir(struct repository *repo, const char *root,
 168                      const struct set_gitdir_args *extra_args);
 169 void repo_set_worktree(struct repository *repo, const char *path);
 170 void repo_set_hash_algo(struct repository *repo, int algo);
 171 void initialize_the_repository(void);
 172 int repo_init(struct repository *r, const char *gitdir, const char *worktree);
 173
 174 /*
 175  * Initialize the repository 'subrepo' as the submodule given by the
 176  * struct submodule 'sub' in parent repository 'superproject'.
 177  * Return 0 upon success and a non-zero value upon failure, which may happen
 178  * if the submodule is not found, or 'sub' is NULL.
 179  */
 180 struct submodule;
 181 int repo_submodule_init(struct repository *subrepo,
 182                         struct repository *superproject,
 183                         const struct submodule *sub);
 184 void repo_clear(struct repository *repo);
 185
 186 /*
 187  * Populates the repository's index from its index_file, an index struct will
 188  * be allocated if needed.
 189  *
 190  * Return the number of index entries in the populated index or a value less
 191  * than zero if an error occurred.  If the repository's index has already been
 192  * populated then the number of entries will simply be returned.
 193  */
 194 int repo_read_index(struct repository *repo);
 195 int repo_hold_locked_index(struct repository *repo,
 196                            struct lock_file *lf,
 197                            int flags);
 198
 199 int repo_read_index_preload(struct repository *,
 200                             const struct pathspec *pathspec,
 201                             unsigned refresh_flags);
 202 int repo_read_index_unmerged(struct repository *);
 203 /*
 204  * Opportunistically update the index but do not complain if we can't.
 205  * The lockfile is always committed or rolled back.
 206  */
 207 void repo_update_index_if_able(struct repository *, struct lock_file *);
 208
 209 void prepare_repo_settings(struct repository *r);
 210
 211 /*
 212  * Return 1 if upgrade repository format to target_version succeeded,
 213  * 0 if no upgrade is necessary, and -1 when upgrade is not possible.
 214  */
 215 int upgrade_repository_format(int target_version);
 216
 217 #endif /* REPOSITORY_H */