1 files changed, 0 insertions, 282 deletions
diff --git a/storage/filesystem/internal/dotgit/writers.go b/storage/filesystem/internal/dotgit/writers.go
deleted file mode 100644
index c2b420f..0000000
--- a/storage/filesystem/internal/dotgit/writers.go
+++ /dev/null
@@ -1,282 +0,0 @@
-package dotgit
-
-import (
-	"fmt"
-	"io"
-	"sync/atomic"
-
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/format/idxfile"
-	"gopkg.in/src-d/go-git.v4/plumbing/format/objfile"
-	"gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
-
-	"gopkg.in/src-d/go-billy.v4"
-)
-
-// PackWriter is a io.Writer that generates the packfile index simultaneously,
-// a packfile.Decoder is used with a file reader to read the file being written
-// this operation is synchronized with the write operations.
-// The packfile is written in a temp file, when Close is called this file
-// is renamed/moved (depends on the Filesystem implementation) to the final
-// location, if the PackWriter is not used, nothing is written
-type PackWriter struct {
-	Notify func(plumbing.Hash, *packfile.Index)
-
-	fs       billy.Filesystem
-	fr, fw   billy.File
-	synced   *syncedReader
-	checksum plumbing.Hash
-	index    *packfile.Index
-	result   chan error
-}
-
-func newPackWrite(fs billy.Filesystem) (*PackWriter, error) {
-	fw, err := fs.TempFile(fs.Join(objectsPath, packPath), "tmp_pack_")
-	if err != nil {
-		return nil, err
-	}
-
-	fr, err := fs.Open(fw.Name())
-	if err != nil {
-		return nil, err
-	}
-
-	writer := &PackWriter{
-		fs:     fs,
-		fw:     fw,
-		fr:     fr,
-		synced: newSyncedReader(fw, fr),
-		result: make(chan error),
-	}
-
-	go writer.buildIndex()
-	return writer, nil
-}
-
-func (w *PackWriter) buildIndex() {
-	s := packfile.NewScanner(w.synced)
-	d, err := packfile.NewDecoder(s, nil)
-	if err != nil {
-		w.result <- err
-		return
-	}
-
-	checksum, err := d.Decode()
-	if err != nil {
-		w.result <- err
-		return
-	}
-
-	w.checksum = checksum
-	w.index = d.Index()
-	w.result <- err
-}
-
-// waitBuildIndex waits until buildIndex function finishes, this can terminate
-// with a packfile.ErrEmptyPackfile, this means that nothing was written so we
-// ignore the error
-func (w *PackWriter) waitBuildIndex() error {
-	err := <-w.result
-	if err == packfile.ErrEmptyPackfile {
-		return nil
-	}
-
-	return err
-}
-
-func (w *PackWriter) Write(p []byte) (int, error) {
-	return w.synced.Write(p)
-}
-
-// Close closes all the file descriptors and save the final packfile, if nothing
-// was written, the tempfiles are deleted without writing a packfile.
-func (w *PackWriter) Close() error {
-	defer func() {
-		if w.Notify != nil && w.index != nil && w.index.Size() > 0 {
-			w.Notify(w.checksum, w.index)
-		}
-
-		close(w.result)
-	}()
-
-	if err := w.synced.Close(); err != nil {
-		return err
-	}
-
-	if err := w.waitBuildIndex(); err != nil {
-		return err
-	}
-
-	if err := w.fr.Close(); err != nil {
-		return err
-	}
-
-	if err := w.fw.Close(); err != nil {
-		return err
-	}
-
-	if w.index == nil || w.index.Size() == 0 {
-		return w.clean()
-	}
-
-	return w.save()
-}
-
-func (w *PackWriter) clean() error {
-	return w.fs.Remove(w.fw.Name())
-}
-
-func (w *PackWriter) save() error {
-	base := w.fs.Join(objectsPath, packPath, fmt.Sprintf("pack-%s", w.checksum))
-	idx, err := w.fs.Create(fmt.Sprintf("%s.idx", base))
-	if err != nil {
-		return err
-	}
-
-	if err := w.encodeIdx(idx); err != nil {
-		return err
-	}
-
-	if err := idx.Close(); err != nil {
-		return err
-	}
-
-	return w.fs.Rename(w.fw.Name(), fmt.Sprintf("%s.pack", base))
-}
-
-func (w *PackWriter) encodeIdx(writer io.Writer) error {
-	idx := w.index.ToIdxFile()
-	idx.PackfileChecksum = w.checksum
-	idx.Version = idxfile.VersionSupported
-	e := idxfile.NewEncoder(writer)
-	_, err := e.Encode(idx)
-	return err
-}
-
-type syncedReader struct {
-	w io.Writer
-	r io.ReadSeeker
-
-	blocked, done uint32
-	written, read uint64
-	news          chan bool
-}
-
-func newSyncedReader(w io.Writer, r io.ReadSeeker) *syncedReader {
-	return &syncedReader{
-		w:    w,
-		r:    r,
-		news: make(chan bool),
-	}
-}
-
-func (s *syncedReader) Write(p []byte) (n int, err error) {
-	defer func() {
-		written := atomic.AddUint64(&s.written, uint64(n))
-		read := atomic.LoadUint64(&s.read)
-		if written > read {
-			s.wake()
-		}
-	}()
-
-	n, err = s.w.Write(p)
-	return
-}
-
-func (s *syncedReader) Read(p []byte) (n int, err error) {
-	defer func() { atomic.AddUint64(&s.read, uint64(n)) }()
-
-	for {
-		s.sleep()
-		n, err = s.r.Read(p)
-		if err == io.EOF && !s.isDone() && n == 0 {
-			continue
-		}
-
-		break
-	}
-
-	return
-}
-
-func (s *syncedReader) isDone() bool {
-	return atomic.LoadUint32(&s.done) == 1
-}
-
-func (s *syncedReader) isBlocked() bool {
-	return atomic.LoadUint32(&s.blocked) == 1
-}
-
-func (s *syncedReader) wake() {
-	if s.isBlocked() {
-		//	fmt.Println("wake")
-		atomic.StoreUint32(&s.blocked, 0)
-		s.news <- true
-	}
-}
-
-func (s *syncedReader) sleep() {
-	read := atomic.LoadUint64(&s.read)
-	written := atomic.LoadUint64(&s.written)
-	if read >= written {
-		atomic.StoreUint32(&s.blocked, 1)
-		//	fmt.Println("sleep", read, written)
-		<-s.news
-	}
-
-}
-
-func (s *syncedReader) Seek(offset int64, whence int) (int64, error) {
-	if whence == io.SeekCurrent {
-		return s.r.Seek(offset, whence)
-	}
-
-	p, err := s.r.Seek(offset, whence)
-	atomic.StoreUint64(&s.read, uint64(p))
-
-	return p, err
-}
-
-func (s *syncedReader) Close() error {
-	atomic.StoreUint32(&s.done, 1)
-	close(s.news)
-	return nil
-}
-
-type ObjectWriter struct {
-	objfile.Writer
-	fs billy.Filesystem
-	f  billy.File
-}
-
-func newObjectWriter(fs billy.Filesystem) (*ObjectWriter, error) {
-	f, err := fs.TempFile(fs.Join(objectsPath, packPath), "tmp_obj_")
-	if err != nil {
-		return nil, err
-	}
-
-	return &ObjectWriter{
-		Writer: (*objfile.NewWriter(f)),
-		fs:     fs,
-		f:      f,
-	}, nil
-}
-
-func (w *ObjectWriter) Close() error {
-	if err := w.Writer.Close(); err != nil {
-		return err
-	}
-
-	if err := w.f.Close(); err != nil {
-		return err
-	}
-
-	return w.save()
-}
-
-func (w *ObjectWriter) save() error {
-	hash := w.Hash().String()
-	file := w.fs.Join(objectsPath, hash[0:2], hash[2:40])
-
-	return w.fs.Rename(w.f.Name(), file)
-}