worktree.h

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