kraken

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// Copyright (c) 2016-2019 Uber Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//     http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package piecereader
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import "bytes"
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// Buffer is a storage.PieceReader which reads a piece from an in-memory buffer.
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type Buffer struct {
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	reader *bytes.Reader
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}
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// NewBuffer returns a new Buffer for b.
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func NewBuffer(b []byte) *Buffer {
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	return &Buffer{bytes.NewReader(b)}
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}
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// Read reads a piece into p.
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func (b *Buffer) Read(p []byte) (int, error) {
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	return b.reader.Read(p)
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}
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// Close noops.
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func (b *Buffer) Close() error {
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	return nil
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}
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// Length returns the length of the piece.
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func (b *Buffer) Length() int {
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	return b.reader.Len()
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}
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