Andrew's git - gitweb.git/blob

   1#ifndef NOTES_MERGE_H
   2#define NOTES_MERGE_H
   3
   4#define NOTES_MERGE_WORKTREE "NOTES_MERGE_WORKTREE"
   5
   6enum notes_merge_verbosity {
   7        NOTES_MERGE_VERBOSITY_DEFAULT = 2,
   8        NOTES_MERGE_VERBOSITY_MAX = 5
   9};
  10
  11struct notes_merge_options {
  12        const char *local_ref;
  13        const char *remote_ref;
  14        struct strbuf commit_msg;
  15        int verbosity;
  16        enum {
  17                NOTES_MERGE_RESOLVE_MANUAL = 0,
  18                NOTES_MERGE_RESOLVE_OURS,
  19                NOTES_MERGE_RESOLVE_THEIRS,
  20                NOTES_MERGE_RESOLVE_UNION,
  21                NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ
  22        } strategy;
  23        unsigned has_worktree:1;
  24};
  25
  26void init_notes_merge_options(struct notes_merge_options *o);
  27
  28/*
  29 * Create new notes commit from the given notes tree
  30 *
  31 * Properties of the created commit:
  32 * - tree: the result of converting t to a tree object with write_notes_tree().
  33 * - parents: the given parents OR (if NULL) the commit referenced by t->ref.
  34 * - author/committer: the default determined by commmit_tree().
  35 * - commit message: msg
  36 *
  37 * The resulting commit SHA1 is stored in result_sha1.
  38 */
  39void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
  40                         const char *msg, unsigned char *result_sha1);
  41
  42/*
  43 * Merge notes from o->remote_ref into o->local_ref
  44 *
  45 * The given notes_tree 'local_tree' must be the notes_tree referenced by the
  46 * o->local_ref. This is the notes_tree in which the object-level merge is
  47 * performed.
  48 *
  49 * The commits given by the two refs are merged, producing one of the following
  50 * outcomes:
  51 *
  52 * 1. The merge trivially results in an existing commit (e.g. fast-forward or
  53 *    already-up-to-date). 'local_tree' is untouched, the SHA1 of the result
  54 *    is written into 'result_sha1' and 0 is returned.
  55 * 2. The merge successfully completes, producing a merge commit. local_tree
  56 *    contains the updated notes tree, the SHA1 of the resulting commit is
  57 *    written into 'result_sha1', and 1 is returned.
  58 * 3. The merge results in conflicts. This is similar to #2 in that the
  59 *    partial merge result (i.e. merge result minus the unmerged entries)
  60 *    are stored in 'local_tree', and the SHA1 or the resulting commit
  61 *    (to be amended when the conflicts have been resolved) is written into
  62 *    'result_sha1'. The unmerged entries are written into the
  63 *    .git/NOTES_MERGE_WORKTREE directory with conflict markers.
  64 *    -1 is returned.
  65 *
  66 * Both o->local_ref and o->remote_ref must be given (non-NULL), but either ref
  67 * (although not both) may refer to a non-existing notes ref, in which case
  68 * that notes ref is interpreted as an empty notes tree, and the merge
  69 * trivially results in what the other ref points to.
  70 */
  71int notes_merge(struct notes_merge_options *o,
  72                struct notes_tree *local_tree,
  73                unsigned char *result_sha1);
  74
  75/*
  76 * Finalize conflict resolution from an earlier notes_merge()
  77 *
  78 * The given notes tree 'partial_tree' must be the notes_tree corresponding to
  79 * the given 'partial_commit', the partial result commit created by a previous
  80 * call to notes_merge().
  81 *
  82 * This function will add the (now resolved) notes in .git/NOTES_MERGE_WORKTREE
  83 * to 'partial_tree', and create a final notes merge commit, the SHA1 of which
  84 * will be stored in 'result_sha1'.
  85 */
  86int notes_merge_commit(struct notes_merge_options *o,
  87                       struct notes_tree *partial_tree,
  88                       struct commit *partial_commit,
  89                       unsigned char *result_sha1);
  90
  91/*
  92 * Abort conflict resolution from an earlier notes_merge()
  93 *
  94 * Removes the notes merge worktree in .git/NOTES_MERGE_WORKTREE.
  95 */
  96int notes_merge_abort(struct notes_merge_options *o);
  97
  98#endif