notes-merge.h

   1 #ifndef NOTES_MERGE_H
   2 #define NOTES_MERGE_H
   3
   4 #include "notes-utils.h"
   5
   6 #define NOTES_MERGE_WORKTREE "NOTES_MERGE_WORKTREE"
   7
   8 enum notes_merge_verbosity {
   9         NOTES_MERGE_VERBOSITY_DEFAULT = 2,
  10         NOTES_MERGE_VERBOSITY_MAX = 5
  11 };
  12
  13 struct notes_merge_options {
  14         const char *local_ref;
  15         const char *remote_ref;
  16         struct strbuf commit_msg;
  17         int verbosity;
  18         enum notes_merge_strategy strategy;
  19         unsigned has_worktree:1;
  20 };
  21
  22 void init_notes_merge_options(struct notes_merge_options *o);
  23
  24 /*
  25  * Merge notes from o->remote_ref into o->local_ref
  26  *
  27  * The given notes_tree 'local_tree' must be the notes_tree referenced by the
  28  * o->local_ref. This is the notes_tree in which the object-level merge is
  29  * performed.
  30  *
  31  * The commits given by the two refs are merged, producing one of the following
  32  * outcomes:
  33  *
  34  * 1. The merge trivially results in an existing commit (e.g. fast-forward or
  35  *    already-up-to-date). 'local_tree' is untouched, the SHA1 of the result
  36  *    is written into 'result_sha1' and 0 is returned.
  37  * 2. The merge successfully completes, producing a merge commit. local_tree
  38  *    contains the updated notes tree, the SHA1 of the resulting commit is
  39  *    written into 'result_sha1', and 1 is returned.
  40  * 3. The merge results in conflicts. This is similar to #2 in that the
  41  *    partial merge result (i.e. merge result minus the unmerged entries)
  42  *    are stored in 'local_tree', and the SHA1 or the resulting commit
  43  *    (to be amended when the conflicts have been resolved) is written into
  44  *    'result_sha1'. The unmerged entries are written into the
  45  *    .git/NOTES_MERGE_WORKTREE directory with conflict markers.
  46  *    -1 is returned.
  47  *
  48  * Both o->local_ref and o->remote_ref must be given (non-NULL), but either ref
  49  * (although not both) may refer to a non-existing notes ref, in which case
  50  * that notes ref is interpreted as an empty notes tree, and the merge
  51  * trivially results in what the other ref points to.
  52  */
  53 int notes_merge(struct notes_merge_options *o,
  54                 struct notes_tree *local_tree,
  55                 unsigned char *result_sha1);
  56
  57 /*
  58  * Finalize conflict resolution from an earlier notes_merge()
  59  *
  60  * The given notes tree 'partial_tree' must be the notes_tree corresponding to
  61  * the given 'partial_commit', the partial result commit created by a previous
  62  * call to notes_merge().
  63  *
  64  * This function will add the (now resolved) notes in .git/NOTES_MERGE_WORKTREE
  65  * to 'partial_tree', and create a final notes merge commit, the SHA1 of which
  66  * will be stored in 'result_sha1'.
  67  */
  68 int notes_merge_commit(struct notes_merge_options *o,
  69                        struct notes_tree *partial_tree,
  70                        struct commit *partial_commit,
  71                        unsigned char *result_sha1);
  72
  73 /*
  74  * Abort conflict resolution from an earlier notes_merge()
  75  *
  76  * Removes the notes merge worktree in .git/NOTES_MERGE_WORKTREE.
  77  */
  78 int notes_merge_abort(struct notes_merge_options *o);
  79
  80 #endif