75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
// Copyright 2026 PingCAP, 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 compressedio
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import (
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"bytes"
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"github.com/pingcap/errors"
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)
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// Buffer a compressed buffer.
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type Buffer struct {
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*bytes.Buffer
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writer Writer
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cap int
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}
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// Write implements objectio.interceptBuffer.
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func (b *Buffer) Write(p []byte) (int, error) {
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written, err := b.writer.Write(p)
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return written, errors.Trace(err)
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}
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// Len implements objectio.interceptBuffer.
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func (b *Buffer) Len() int {
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return b.Buffer.Len()
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}
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// Cap implements objectio.interceptBuffer.
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func (b *Buffer) Cap() int {
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return b.cap
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}
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// Reset implements objectio.interceptBuffer.
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func (b *Buffer) Reset() {
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b.Buffer.Reset()
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}
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// Flush implements objectio.interceptBuffer.
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func (b *Buffer) Flush() error {
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return b.writer.Flush()
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}
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// Close implements objectio.interceptBuffer.
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func (b *Buffer) Close() error {
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return b.writer.Close()
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}
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// Compressed implements objectio.interceptBuffer.
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func (*Buffer) Compressed() bool {
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return true
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}
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// NewBuffer creates a new Buffer.
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func NewBuffer(chunkSize int, compressType CompressType) *Buffer {
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bf := bytes.NewBuffer(make([]byte, 0, chunkSize))
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return &Buffer{
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Buffer: bf,
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cap: chunkSize,
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writer: NewWriter(compressType, bf),
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}
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}
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