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This new strategy is similar to "concatenate", but in addition to concatenating the two note candidates, this strategy sorts the resulting lines, and removes duplicate lines from the result. This is equivalent to applying the "cat | sort | uniq" shell pipeline to the two note candidates. This strategy is useful if the notes follow a line-based format where one wants to avoid duplicate lines in the merge result. Note that if either of the note candidates contain duplicate lines _prior_ to the merge, these will also be removed by this merge strategy. The patch also contains tests and documentation for the new strategy. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
#ifndef NOTES_MERGE_H
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#define NOTES_MERGE_H
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#define NOTES_MERGE_WORKTREE "NOTES_MERGE_WORKTREE"
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enum notes_merge_verbosity {
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NOTES_MERGE_VERBOSITY_DEFAULT = 2,
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NOTES_MERGE_VERBOSITY_MAX = 5
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};
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struct notes_merge_options {
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const char *local_ref;
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const char *remote_ref;
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struct strbuf commit_msg;
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int verbosity;
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enum {
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NOTES_MERGE_RESOLVE_MANUAL = 0,
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NOTES_MERGE_RESOLVE_OURS,
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NOTES_MERGE_RESOLVE_THEIRS,
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NOTES_MERGE_RESOLVE_UNION,
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NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ
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} strategy;
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unsigned has_worktree:1;
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};
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void init_notes_merge_options(struct notes_merge_options *o);
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/*
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* Create new notes commit from the given notes tree
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*
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* Properties of the created commit:
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* - tree: the result of converting t to a tree object with write_notes_tree().
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* - parents: the given parents OR (if NULL) the commit referenced by t->ref.
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* - author/committer: the default determined by commmit_tree().
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* - commit message: msg
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*
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* The resulting commit SHA1 is stored in result_sha1.
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*/
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void create_notes_commit(struct notes_tree *t, struct commit_list *parents,
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const char *msg, unsigned char *result_sha1);
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/*
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* Merge notes from o->remote_ref into o->local_ref
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*
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* The given notes_tree 'local_tree' must be the notes_tree referenced by the
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* o->local_ref. This is the notes_tree in which the object-level merge is
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* performed.
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*
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* The commits given by the two refs are merged, producing one of the following
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* outcomes:
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*
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* 1. The merge trivially results in an existing commit (e.g. fast-forward or
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* already-up-to-date). 'local_tree' is untouched, the SHA1 of the result
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* is written into 'result_sha1' and 0 is returned.
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* 2. The merge successfully completes, producing a merge commit. local_tree
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* contains the updated notes tree, the SHA1 of the resulting commit is
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* written into 'result_sha1', and 1 is returned.
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* 3. The merge results in conflicts. This is similar to #2 in that the
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* partial merge result (i.e. merge result minus the unmerged entries)
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* are stored in 'local_tree', and the SHA1 or the resulting commit
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* (to be amended when the conflicts have been resolved) is written into
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* 'result_sha1'. The unmerged entries are written into the
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* .git/NOTES_MERGE_WORKTREE directory with conflict markers.
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* -1 is returned.
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*
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* Both o->local_ref and o->remote_ref must be given (non-NULL), but either ref
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* (although not both) may refer to a non-existing notes ref, in which case
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* that notes ref is interpreted as an empty notes tree, and the merge
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* trivially results in what the other ref points to.
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*/
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int notes_merge(struct notes_merge_options *o,
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struct notes_tree *local_tree,
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unsigned char *result_sha1);
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/*
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* Finalize conflict resolution from an earlier notes_merge()
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*
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* The given notes tree 'partial_tree' must be the notes_tree corresponding to
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* the given 'partial_commit', the partial result commit created by a previous
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* call to notes_merge().
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*
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* This function will add the (now resolved) notes in .git/NOTES_MERGE_WORKTREE
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* to 'partial_tree', and create a final notes merge commit, the SHA1 of which
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* will be stored in 'result_sha1'.
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*/
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int notes_merge_commit(struct notes_merge_options *o,
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struct notes_tree *partial_tree,
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struct commit *partial_commit,
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unsigned char *result_sha1);
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/*
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* Abort conflict resolution from an earlier notes_merge()
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*
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* Removes the notes merge worktree in .git/NOTES_MERGE_WORKTREE.
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*/
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int notes_merge_abort(struct notes_merge_options *o);
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#endif
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