func (p *Project) merge(aCommits []*git.AnnotatedCommit, source, target *git.Reference) (*git.Oid, error) {
defer p.repo.StateCleanup()
if err := p.repo.Merge(aCommits, nil, nil); err != nil {
return nil, err
}
if index, err := p.repo.Index(); err != nil {
return nil, err
} else if index.HasConflicts() {
return nil, errors.New("Conflicts encountered during merge. Resolve them in the index.")
}
// write index to disk and get ID
commitTree, err := p.writeIndex()
if err != nil {
return nil, err
}
lCommit, err := p.repo.LookupCommit(target.Target())
if err != nil {
return nil, err
}
rCommit, err := p.repo.LookupCommit(source.Target())
if err != nil {
return nil, err
}
return p.repo.CreateCommit("HEAD", mergeSignature(), mergeSignature(), "Auto-merged changes", commitTree, lCommit, rCommit)
}
func (p *Project) fastForward(source, target *git.Reference) error {
_, err := target.SetTarget(source.Target(), "Fast-forward")
return err
}