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Diffstat (limited to 'src/pkg/crypto/cipher/io.go')
-rw-r--r--src/pkg/crypto/cipher/io.go57
1 files changed, 0 insertions, 57 deletions
diff --git a/src/pkg/crypto/cipher/io.go b/src/pkg/crypto/cipher/io.go
deleted file mode 100644
index 97f40b8e7..000000000
--- a/src/pkg/crypto/cipher/io.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package cipher
-
-import (
- "os"
- "io"
-)
-
-// The Stream* objects are so simple that all their members are public. Users
-// can create them themselves.
-
-// StreamReader wraps a Stream into an io.Reader. It simply calls XORKeyStream
-// to process each slice of data which passes through.
-type StreamReader struct {
- S Stream
- R io.Reader
-}
-
-func (r StreamReader) Read(dst []byte) (n int, err os.Error) {
- n, err = r.R.Read(dst)
- r.S.XORKeyStream(dst[:n], dst[:n])
- return
-}
-
-// StreamWriter wraps a Stream into an io.Writer. It simply calls XORKeyStream
-// to process each slice of data which passes through. If any Write call
-// returns short then the StreamWriter is out of sync and must be discarded.
-type StreamWriter struct {
- S Stream
- W io.Writer
- Err os.Error
-}
-
-func (w StreamWriter) Write(src []byte) (n int, err os.Error) {
- if w.Err != nil {
- return 0, w.Err
- }
- c := make([]byte, len(src))
- w.S.XORKeyStream(c, src)
- n, err = w.W.Write(c)
- if n != len(src) {
- if err == nil { // should never happen
- err = io.ErrShortWrite
- }
- w.Err = err
- }
- return
-}
-
-func (w StreamWriter) Close() os.Error {
- // This saves us from either requiring a WriteCloser or having a
- // StreamWriterCloser.
- return w.W.(io.Closer).Close()
-}