worktree.h

   1 #ifndef WORKTREE_H
   2 #define WORKTREE_H
   3
   4 #include "refs.h"
   5
   6 struct strbuf;
   7
   8 struct worktree {
   9         /* The repository this worktree belongs to. */
  10         struct repository *repo;
  11         char *path;
  12         char *id;
  13         char *head_ref;         /* NULL if HEAD is broken or detached */
  14         char *lock_reason;      /* private - use worktree_lock_reason */
  15         char *prune_reason;     /* private - use worktree_prune_reason */
  16         struct object_id head_oid;
  17         int is_detached;
  18         int is_bare;
  19         int is_current;
  20         int lock_reason_valid; /* private */
  21         int prune_reason_valid; /* private */
  22 };
  23
  24 /*
  25  * Get the worktrees.  The primary worktree will always be the first returned,
  26  * and linked worktrees will follow in no particular order.
  27  *
  28  * The caller is responsible for freeing the memory from the returned
  29  * worktrees by calling free_worktrees().
  30  */
  31 struct worktree **get_worktrees(void);
  32
  33 /*
  34  * Returns 1 if linked worktrees exist, 0 otherwise.
  35  */
  36 int submodule_uses_worktrees(const char *path);
  37
  38 /*
  39  * Return git dir of the worktree. Note that the path may be relative.
  40  * If wt is NULL, git dir of current worktree is returned.
  41  */
  42 const char *get_worktree_git_dir(const struct worktree *wt);
  43
  44 /*
  45  * Search for the worktree identified unambiguously by `arg` -- typically
  46  * supplied by the user via the command-line -- which may be a pathname or some
  47  * shorthand uniquely identifying a worktree, thus making it convenient for the
  48  * user to specify a worktree with minimal typing. For instance, if the last
  49  * component (say, "foo") of a worktree's pathname is unique among worktrees
  50  * (say, "work/foo" and "work/bar"), it can be used to identify the worktree
  51  * unambiguously.
  52  *
  53  * `prefix` should be the `prefix` handed to top-level Git commands along with
  54  * `argc` and `argv`.
  55  *
  56  * Return the worktree identified by `arg`, or NULL if not found.
  57  */
  58 struct worktree *find_worktree(struct worktree **list,
  59                                const char *prefix,
  60                                const char *arg);
  61
  62 /*
  63  * Look up the worktree corresponding to `id`, or NULL of no such worktree
  64  * exists.
  65  */
  66 struct worktree *get_linked_worktree(const char *id,
  67                                      int skip_reading_head);
  68
  69 /*
  70  * Return the worktree corresponding to `path`, or NULL if no such worktree
  71  * exists.
  72  */
  73 struct worktree *find_worktree_by_path(struct worktree **, const char *path);
  74
  75 /*
  76  * Return true if the given worktree is the main one.
  77  */
  78 int is_main_worktree(const struct worktree *wt);
  79
  80 /*
  81  * Return the reason string if the given worktree is locked or NULL
  82  * otherwise.
  83  */
  84 const char *worktree_lock_reason(struct worktree *wt);
  85
  86 /*
  87  * Return the reason string if the given worktree should be pruned, otherwise
  88  * NULL if it should not be pruned. `expire` defines a grace period to prune
  89  * the worktree when its path does not exist.
  90  */
  91 const char *worktree_prune_reason(struct worktree *wt, timestamp_t expire);
  92
  93 /*
  94  * Return true if worktree entry should be pruned, along with the reason for
  95  * pruning. Otherwise, return false and the worktree's path in `wtpath`, or
  96  * NULL if it cannot be determined. Caller is responsible for freeing
  97  * returned path.
  98  *
  99  * `expire` defines a grace period to prune the worktree when its path
 100  * does not exist.
 101  */
 102 int should_prune_worktree(const char *id,
 103                           struct strbuf *reason,
 104                           char **wtpath,
 105                           timestamp_t expire);
 106
 107 #define WT_VALIDATE_WORKTREE_MISSING_OK (1 << 0)
 108
 109 /*
 110  * Return zero if the worktree is in good condition. Error message is
 111  * returned if "errmsg" is not NULL.
 112  */
 113 int validate_worktree(const struct worktree *wt,
 114                       struct strbuf *errmsg,
 115                       unsigned flags);
 116
 117 /*
 118  * Update worktrees/xxx/gitdir with the new path.
 119  */
 120 void update_worktree_location(struct worktree *wt,
 121                               const char *path_);
 122
 123 typedef void (* worktree_repair_fn)(int iserr, const char *path,
 124                                     const char *msg, void *cb_data);
 125
 126 /*
 127  * Visit each registered linked worktree and repair corruptions. For each
 128  * repair made or error encountered while attempting a repair, the callback
 129  * function, if non-NULL, is called with the path of the worktree and a
 130  * description of the repair or error, along with the callback user-data.
 131  */
 132 void repair_worktrees(worktree_repair_fn, void *cb_data);
 133
 134 /*
 135  * Repair the linked worktrees after the gitdir has been moved.
 136  */
 137 void repair_worktrees_after_gitdir_move(const char *old_path);
 138
 139 /*
 140  * Repair the linked worktree after the gitdir has been moved.
 141  */
 142 void repair_worktree_after_gitdir_move(struct worktree *wt, const char *old_path);
 143
 144 /*
 145  * Repair administrative files corresponding to the worktree at the given path.
 146  * The worktree's .git file pointing at the repository must be intact for the
 147  * repair to succeed. Useful for re-associating an orphaned worktree with the
 148  * repository if the worktree has been moved manually (without using "git
 149  * worktree move"). For each repair made or error encountered while attempting
 150  * a repair, the callback function, if non-NULL, is called with the path of the
 151  * worktree and a description of the repair or error, along with the callback
 152  * user-data.
 153  */
 154 void repair_worktree_at_path(const char *, worktree_repair_fn, void *cb_data);
 155
 156 /*
 157  * Free up the memory for a worktree.
 158  */
 159 void free_worktree(struct worktree *);
 160
 161 /*
 162  * Free up the memory for worktree(s)
 163  */
 164 void free_worktrees(struct worktree **);
 165
 166 /*
 167  * Check if a per-worktree symref points to a ref in the main worktree
 168  * or any linked worktree, and return the worktree that holds the ref,
 169  * or NULL otherwise.
 170  */
 171 const struct worktree *find_shared_symref(struct worktree **worktrees,
 172                                           const char *symref,
 173                                           const char *target);
 174
 175 /*
 176  * Returns true if a symref points to a ref in a worktree.
 177  */
 178 int is_shared_symref(const struct worktree *wt,
 179                      const char *symref, const char *target);
 180
 181 /*
 182  * Similar to head_ref() for all HEADs _except_ one from the current
 183  * worktree, which is covered by head_ref().
 184  */
 185 int other_head_refs(each_ref_fn fn, void *cb_data);
 186
 187 int is_worktree_being_rebased(const struct worktree *wt, const char *target);
 188 int is_worktree_being_bisected(const struct worktree *wt, const char *target);
 189
 190 /*
 191  * Return a refname suitable for access from the current ref store.
 192  */
 193 void strbuf_worktree_ref(const struct worktree *wt,
 194                          struct strbuf *sb,
 195                          const char *refname);
 196
 197 /**
 198  * Enable worktree config for the first time. This will make the following
 199  * adjustments:
 200  *
 201  * 1. Add extensions.worktreeConfig=true in the common config file.
 202  *
 203  * 2. If the common config file has a core.worktree value, then that value
 204  *    is moved to the main worktree's config.worktree file.
 205  *
 206  * 3. If the common config file has a core.bare enabled, then that value
 207  *    is moved to the main worktree's config.worktree file.
 208  *
 209  * If extensions.worktreeConfig is already true, then this method
 210  * terminates early without any of the above steps. The existing config
 211  * arrangement is assumed to be intentional.
 212  *
 213  * Returns 0 on success. Reports an error message and returns non-zero
 214  * if any of these steps fail.
 215  */
 216 int init_worktree_config(struct repository *r);
 217
 218 #endif