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package git
import (
"srcd.works/go-git.v4/config"
"srcd.works/go-git.v4/plumbing"
)
// Submodule a submodule allows you to keep another Git repository in a
// subdirectory of your repository.
type Submodule struct {
m *config.Submodule
w *Worktree
// r is the submodule repository
r *Repository
}
// Config returns the submodule config
func (s *Submodule) Config() *config.Submodule {
return s.m
}
// Init initialize the submodule reading the recoreded Entry in the index for
// the given submodule
func (s *Submodule) Init() error {
e, err := s.w.readIndexEntry(s.m.Path)
if err != nil {
return err
}
_, err = s.r.CreateRemote(&config.RemoteConfig{
Name: DefaultRemoteName,
URL: s.m.URL,
})
if err != nil {
return err
}
return s.fetchAndCheckout(e.Hash)
}
// Update the registered submodule to match what the superproject expects
func (s *Submodule) Update() error {
e, err := s.w.readIndexEntry(s.m.Path)
if err != nil {
return err
}
return s.fetchAndCheckout(e.Hash)
}
func (s *Submodule) fetchAndCheckout(hash plumbing.Hash) error {
if err := s.r.Fetch(&FetchOptions{}); err != nil && err != NoErrAlreadyUpToDate {
return err
}
w, err := s.r.Worktree()
if err != nil {
return err
}
if err := w.Checkout(hash); err != nil {
return err
}
head := plumbing.NewHashReference(plumbing.HEAD, hash)
return s.r.Storer.SetReference(head)
}
// Submodules list of several submodules from the same repository
type Submodules []*Submodule
// Init initialize the submodule recorded in the index
func (s Submodules) Init() error {
for _, sub := range s {
if err := sub.Init(); err != nil {
return err
}
}
return nil
}
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