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Conflicts (that are to be resolved manually) are written into a special- purpose working tree, located at .git/NOTES_MERGE_WORKTREE. Within this directory, conflicting notes entries are stored (with conflict markers produced by ll_merge()) using the SHA1 of the annotated object. The .git/NOTES_MERGE_WORKTREE directory will only contain the _conflicting_ note entries. The non-conflicting note entries (aka. the partial merge result) are stored in 'local_tree', and the SHA1 of the resulting commit is written to 'result_sha1'. The return value from notes_merge() is -1. The user is told to edit the files within the .git/NOTES_MERGE_WORKTREE directory in order to resolve the conflicts. The patch also contains documentation and testcases for the correct setup of .git/NOTES_MERGE_WORKTREE. The next part will recombine the partial notes merge result with the resolved conflicts in .git/NOTES_MERGE_WORKTREE to produce the complete merge result. This patch has been improved by the following contributions: - Jonathan Nieder: Use trace_printf(...) instead of OUTPUT(o, 5, ...) Thanks-to: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
75 lines
2.6 KiB
C
75 lines
2.6 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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const char *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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} 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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#endif
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