44 lines
870 B
Go
44 lines
870 B
Go
package zim
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import (
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"io"
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"github.com/klauspost/compress/zstd"
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"github.com/pkg/errors"
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)
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type ZstdBlobReader struct {
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decoder *zstd.Decoder
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}
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// Close implements io.ReadCloser.
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func (r *ZstdBlobReader) Close() error {
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r.decoder.Close()
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return nil
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}
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// Read implements io.ReadCloser.
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func (r *ZstdBlobReader) Read(p []byte) (n int, err error) {
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return r.decoder.Read(p)
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}
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var _ io.ReadCloser = &ZstdBlobReader{}
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func NewZStdBlobReader(reader *Reader, clusterStartOffset, clusterEndOffset uint64, blobIndex uint32, blobSize int) *CompressedBlobReader {
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return NewCompressedBlobReader(
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reader,
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func(r io.Reader) (io.ReadCloser, error) {
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decoder, err := zstd.NewReader(r)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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return &ZstdBlobReader{decoder}, nil
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},
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clusterStartOffset,
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clusterEndOffset,
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blobIndex,
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blobSize,
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)
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}
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