/
reader.go
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/
reader.go
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// Copyright 2023 wqshr12345, wqshr12345@gmail.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package adaptive3
import (
"io"
"compress/bzip2"
"compress/flate"
"compress/gzip"
"compress/lzw"
"compress/zlib"
"github.com/golang/snappy"
"github.com/wqshr12345/compress/zstd"
"github.com/wqshr12345/golib/common"
)
func NewReader(r io.Reader, compressType uint8) io.Reader {
var r2 io.Reader
if compressType == common.CompressTypeSnappy {
r2 = snappy.NewReader(r)
}
if compressType == common.CompressTypeZstd {
r2, _ = zstd.NewReader(r)
}
if compressType == common.CompressTypeGzip {
r2, _ = gzip.NewReader(r)
}
if compressType == common.CompressTypeBzip2 {
r2 = bzip2.NewReader(r)
}
if compressType == common.CompressTypeFlate {
r2 = flate.NewReader(r)
}
if compressType == common.CompressTypeZlib {
r2, _ = zlib.NewReader(r)
}
if compressType == common.CompressTypeLzw {
r2 = lzw.NewReader(r, lzw.LSB, 8)
}
if compressType == common.CompressTypeNone {
r2 = r
}
return r2
}