worktree.h

   1 #ifndef WORKTREE_H
   2 #define WORKTREE_H
   3
   4 #include "cache.h"
   5 #include "refs.h"
   6
   7 struct strbuf;
   8
   9 struct worktree {
  10         char *path;
  11         char *id;
  12         char *head_ref;         /* NULL if HEAD is broken or detached */
  13         char *lock_reason;      /* private - use worktree_lock_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 };
  20
  21 /*
  22  * Get the worktrees.  The primary worktree will always be the first returned,
  23  * and linked worktrees will follow in no particular order.
  24  *
  25  * The caller is responsible for freeing the memory from the returned
  26  * worktrees by calling free_worktrees().
  27  */
  28 struct worktree **get_worktrees(void);
  29
  30 /*
  31  * Returns 1 if linked worktrees exist, 0 otherwise.
  32  */
  33 int submodule_uses_worktrees(const char *path);
  34
  35 /*
  36  * Return git dir of the worktree. Note that the path may be relative.
  37  * If wt is NULL, git dir of current worktree is returned.
  38  */
  39 const char *get_worktree_git_dir(const struct worktree *wt);
  40
  41 /*
  42  * Search for the worktree identified unambiguously by `arg` -- typically
  43  * supplied by the user via the command-line -- which may be a pathname or some
  44  * shorthand uniquely identifying a worktree, thus making it convenient for the
  45  * user to specify a worktree with minimal typing. For instance, if the last
  46  * component (say, "foo") of a worktree's pathname is unique among worktrees
  47  * (say, "work/foo" and "work/bar"), it can be used to identify the worktree
  48  * unambiguously.
  49  *
  50  * `prefix` should be the `prefix` handed to top-level Git commands along with
  51  * `argc` and `argv`.
  52  *
  53  * Return the worktree identified by `arg`, or NULL if not found.
  54  */
  55 struct worktree *find_worktree(struct worktree **list,
  56                                const char *prefix,
  57                                const char *arg);
  58
  59 /*
  60  * Return the worktree corresponding to `path`, or NULL if no such worktree
  61  * exists.
  62  */
  63 struct worktree *find_worktree_by_path(struct worktree **, const char *path);
  64
  65 /*
  66  * Return true if the given worktree is the main one.
  67  */
  68 int is_main_worktree(const struct worktree *wt);
  69
  70 /*
  71  * Return the reason string if the given worktree is locked or NULL
  72  * otherwise.
  73  */
  74 const char *worktree_lock_reason(struct worktree *wt);
  75
  76 #define WT_VALIDATE_WORKTREE_MISSING_OK (1 << 0)
  77
  78 /*
  79  * Return zero if the worktree is in good condition. Error message is
  80  * returned if "errmsg" is not NULL.
  81  */
  82 int validate_worktree(const struct worktree *wt,
  83                       struct strbuf *errmsg,
  84                       unsigned flags);
  85
  86 /*
  87  * Update worktrees/xxx/gitdir with the new path.
  88  */
  89 void update_worktree_location(struct worktree *wt,
  90                               const char *path_);
  91
  92 typedef void (* worktree_repair_fn)(int iserr, const char *path,
  93                                     const char *msg, void *cb_data);
  94
  95 /*
  96  * Visit each registered linked worktree and repair corruptions. For each
  97  * repair made or error encountered while attempting a repair, the callback
  98  * function, if non-NULL, is called with the path of the worktree and a
  99  * description of the repair or error, along with the callback user-data.
 100  */
 101 void repair_worktrees(worktree_repair_fn, void *cb_data);
 102
 103 /*
 104  * Repair administrative files corresponding to the worktree at the given path.
 105  * The worktree's .git file pointing at the repository must be intact for the
 106  * repair to succeed. Useful for re-associating an orphaned worktree with the
 107  * repository if the worktree has been moved manually (without using "git
 108  * worktree move"). For each repair made or error encountered while attempting
 109  * a repair, the callback function, if non-NULL, is called with the path of the
 110  * worktree and a description of the repair or error, along with the callback
 111  * user-data.
 112  */
 113 void repair_worktree_at_path(const char *, worktree_repair_fn, void *cb_data);
 114
 115 /*
 116  * Free up the memory for worktree(s)
 117  */
 118 void free_worktrees(struct worktree **);
 119
 120 /*
 121  * Check if a per-worktree symref points to a ref in the main worktree
 122  * or any linked worktree, and return the worktree that holds the ref,
 123  * or NULL otherwise. The result may be destroyed by the next call.
 124  */
 125 const struct worktree *find_shared_symref(const char *symref,
 126                                           const char *target);
 127
 128 /*
 129  * Similar to head_ref() for all HEADs _except_ one from the current
 130  * worktree, which is covered by head_ref().
 131  */
 132 int other_head_refs(each_ref_fn fn, void *cb_data);
 133
 134 int is_worktree_being_rebased(const struct worktree *wt, const char *target);
 135 int is_worktree_being_bisected(const struct worktree *wt, const char *target);
 136
 137 /*
 138  * Similar to git_path() but can produce paths for a specified
 139  * worktree instead of current one
 140  */
 141 const char *worktree_git_path(const struct worktree *wt,
 142                               const char *fmt, ...)
 143         __attribute__((format (printf, 2, 3)));
 144
 145 /*
 146  * Parse a worktree ref (i.e. with prefix main-worktree/ or
 147  * worktrees/) and return the position of the worktree's name and
 148  * length (or NULL and zero if it's main worktree), and ref.
 149  *
 150  * All name, name_length and ref arguments could be NULL.
 151  */
 152 int parse_worktree_ref(const char *worktree_ref, const char **name,
 153                        int *name_length, const char **ref);
 154
 155 /*
 156  * Return a refname suitable for access from the current ref store.
 157  */
 158 void strbuf_worktree_ref(const struct worktree *wt,
 159                          struct strbuf *sb,
 160                          const char *refname);
 161
 162 /*
 163  * Return a refname suitable for access from the current ref
 164  * store. The result will be destroyed at the next call.
 165  */
 166 const char *worktree_ref(const struct worktree *wt,
 167                          const char *refname);
 168
 169 #endif