1 files changed, 0 insertions, 100 deletions
diff --git a/src/pkg/image/format.go b/src/pkg/image/format.go
deleted file mode 100644
index 3668de4e6..000000000
--- a/src/pkg/image/format.go
+++ /dev/null
@@ -1,100 +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 image
-
-import (
-	"bufio"
-	"errors"
-	"io"
-)
-
-// ErrFormat indicates that decoding encountered an unknown format.
-var ErrFormat = errors.New("image: unknown format")
-
-// A format holds an image format's name, magic header and how to decode it.
-type format struct {
-	name, magic  string
-	decode       func(io.Reader) (Image, error)
-	decodeConfig func(io.Reader) (Config, error)
-}
-
-// Formats is the list of registered formats.
-var formats []format
-
-// RegisterFormat registers an image format for use by Decode.
-// Name is the name of the format, like "jpeg" or "png".
-// Magic is the magic prefix that identifies the format's encoding. The magic
-// string can contain "?" wildcards that each match any one byte.
-// Decode is the function that decodes the encoded image.
-// DecodeConfig is the function that decodes just its configuration.
-func RegisterFormat(name, magic string, decode func(io.Reader) (Image, error), decodeConfig func(io.Reader) (Config, error)) {
-	formats = append(formats, format{name, magic, decode, decodeConfig})
-}
-
-// A reader is an io.Reader that can also peek ahead.
-type reader interface {
-	io.Reader
-	Peek(int) ([]byte, error)
-}
-
-// asReader converts an io.Reader to a reader.
-func asReader(r io.Reader) reader {
-	if rr, ok := r.(reader); ok {
-		return rr
-	}
-	return bufio.NewReader(r)
-}
-
-// Match reports whether magic matches b. Magic may contain "?" wildcards.
-func match(magic string, b []byte) bool {
-	if len(magic) != len(b) {
-		return false
-	}
-	for i, c := range b {
-		if magic[i] != c && magic[i] != '?' {
-			return false
-		}
-	}
-	return true
-}
-
-// Sniff determines the format of r's data.
-func sniff(r reader) format {
-	for _, f := range formats {
-		b, err := r.Peek(len(f.magic))
-		if err == nil && match(f.magic, b) {
-			return f
-		}
-	}
-	return format{}
-}
-
-// Decode decodes an image that has been encoded in a registered format.
-// The string returned is the format name used during format registration.
-// Format registration is typically done by an init function in the codec-
-// specific package.
-func Decode(r io.Reader) (Image, string, error) {
-	rr := asReader(r)
-	f := sniff(rr)
-	if f.decode == nil {
-		return nil, "", ErrFormat
-	}
-	m, err := f.decode(rr)
-	return m, f.name, err
-}
-
-// DecodeConfig decodes the color model and dimensions of an image that has
-// been encoded in a registered format. The string returned is the format name
-// used during format registration. Format registration is typically done by
-// an init function in the codec-specific package.
-func DecodeConfig(r io.Reader) (Config, string, error) {
-	rr := asReader(r)
-	f := sniff(rr)
-	if f.decodeConfig == nil {
-		return Config{}, "", ErrFormat
-	}
-	c, err := f.decodeConfig(rr)
-	return c, f.name, err
-}