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Diffstat (limited to 'src/pkg/image/tiff/buffer.go')
-rw-r--r--src/pkg/image/tiff/buffer.go57
1 files changed, 0 insertions, 57 deletions
diff --git a/src/pkg/image/tiff/buffer.go b/src/pkg/image/tiff/buffer.go
deleted file mode 100644
index 7c0714225..000000000
--- a/src/pkg/image/tiff/buffer.go
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2011 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 tiff
-
-import (
- "io"
- "os"
-)
-
-// buffer buffers an io.Reader to satisfy io.ReaderAt.
-type buffer struct {
- r io.Reader
- buf []byte
-}
-
-func (b *buffer) ReadAt(p []byte, off int64) (int, os.Error) {
- o := int(off)
- end := o + len(p)
- if int64(end) != off+int64(len(p)) {
- return 0, os.EINVAL
- }
-
- m := len(b.buf)
- if end > m {
- if end > cap(b.buf) {
- newcap := 1024
- for newcap < end {
- newcap *= 2
- }
- newbuf := make([]byte, end, newcap)
- copy(newbuf, b.buf)
- b.buf = newbuf
- } else {
- b.buf = b.buf[:end]
- }
- if n, err := io.ReadFull(b.r, b.buf[m:end]); err != nil {
- end = m + n
- b.buf = b.buf[:end]
- return copy(p, b.buf[o:end]), err
- }
- }
-
- return copy(p, b.buf[o:end]), nil
-}
-
-// newReaderAt converts an io.Reader into an io.ReaderAt.
-func newReaderAt(r io.Reader) io.ReaderAt {
- if ra, ok := r.(io.ReaderAt); ok {
- return ra
- }
- return &buffer{
- r: r,
- buf: make([]byte, 0, 1024),
- }
-}