1 files changed, 0 insertions, 148 deletions
diff --git a/formats/idxfile/decoder.go b/formats/idxfile/decoder.go
deleted file mode 100644
index 884d32b..0000000
--- a/formats/idxfile/decoder.go
+++ /dev/null
@@ -1,148 +0,0 @@
-package idxfile
-
-import (
-	"bytes"
-	"errors"
-	"io"
-
-	"gopkg.in/src-d/go-git.v4/core"
-	"gopkg.in/src-d/go-git.v4/utils/binary"
-)
-
-var (
-	// ErrUnsupportedVersion is returned by Decode when the idx file version
-	// is not supported.
-	ErrUnsupportedVersion = errors.New("Unsuported version")
-	// ErrMalformedIdxFile is returned by Decode when the idx file is corrupted.
-	ErrMalformedIdxFile = errors.New("Malformed IDX file")
-)
-
-// A Decoder reads and decodes idx files from an input stream.
-type Decoder struct {
-	io.Reader
-}
-
-// NewDecoder returns a new decoder that reads from r.
-func NewDecoder(r io.Reader) *Decoder {
-	return &Decoder{r}
-}
-
-// Decode reads the whole idx object from its input and stores it in the
-// value pointed to by idx.
-func (d *Decoder) Decode(idx *Idxfile) error {
-	if err := validateHeader(d); err != nil {
-		return err
-	}
-
-	flow := []func(*Idxfile, io.Reader) error{
-		readVersion,
-		readFanout,
-		readObjectNames,
-		readCRC32,
-		readOffsets,
-		readChecksums,
-	}
-
-	for _, f := range flow {
-		if err := f(idx, d); err != nil {
-			return err
-		}
-	}
-
-	if !idx.isValid() {
-		return ErrMalformedIdxFile
-	}
-
-	return nil
-}
-
-func validateHeader(r io.Reader) error {
-	var h = make([]byte, 4)
-	if _, err := r.Read(h); err != nil {
-		return err
-	}
-
-	if !bytes.Equal(h, idxHeader) {
-		return ErrMalformedIdxFile
-	}
-
-	return nil
-}
-
-func readVersion(idx *Idxfile, r io.Reader) error {
-	v, err := binary.ReadUint32(r)
-	if err != nil {
-		return err
-	}
-
-	if v > VersionSupported {
-		return ErrUnsupportedVersion
-	}
-
-	idx.Version = v
-	return nil
-}
-
-func readFanout(idx *Idxfile, r io.Reader) error {
-	var err error
-	for i := 0; i < 255; i++ {
-		idx.Fanout[i], err = binary.ReadUint32(r)
-		if err != nil {
-			return err
-		}
-	}
-
-	idx.ObjectCount, err = binary.ReadUint32(r)
-	return err
-}
-
-func readObjectNames(idx *Idxfile, r io.Reader) error {
-	c := int(idx.ObjectCount)
-	for i := 0; i < c; i++ {
-		var ref core.Hash
-		if _, err := r.Read(ref[:]); err != nil {
-			return err
-		}
-
-		idx.Entries = append(idx.Entries, Entry{Hash: ref})
-	}
-
-	return nil
-}
-
-func readCRC32(idx *Idxfile, r io.Reader) error {
-	c := int(idx.ObjectCount)
-	for i := 0; i < c; i++ {
-		if err := binary.Read(r, &idx.Entries[i].CRC32); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func readOffsets(idx *Idxfile, r io.Reader) error {
-	c := int(idx.ObjectCount)
-	for i := 0; i < c; i++ {
-		o, err := binary.ReadUint32(r)
-		if err != nil {
-			return err
-		}
-
-		idx.Entries[i].Offset = uint64(o)
-	}
-
-	return nil
-}
-
-func readChecksums(idx *Idxfile, r io.Reader) error {
-	if _, err := r.Read(idx.PackfileChecksum[:]); err != nil {
-		return err
-	}
-
-	if _, err := r.Read(idx.IdxChecksum[:]); err != nil {
-		return err
-	}
-
-	return nil
-}