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