github.com/parquet-go/parquet-go@v0.20.0/compress/snappy/snappy.go (about)

     1  // Package snappy implements the SNAPPY parquet compression codec.
     2  package snappy
     3  
     4  import (
     5  	"github.com/klauspost/compress/snappy"
     6  	"github.com/parquet-go/parquet-go/format"
     7  )
     8  
     9  type Codec struct {
    10  }
    11  
    12  // The snappy.Reader and snappy.Writer implement snappy encoding/decoding with
    13  // a framing protocol, but snappy requires the implementation to use the raw
    14  // snappy block encoding. This is why we need to use snappy.Encode/snappy.Decode
    15  // and have to ship custom implementations of the compressed reader and writer.
    16  
    17  func (c *Codec) String() string {
    18  	return "SNAPPY"
    19  }
    20  
    21  func (c *Codec) CompressionCodec() format.CompressionCodec {
    22  	return format.Snappy
    23  }
    24  
    25  func (c *Codec) Encode(dst, src []byte) ([]byte, error) {
    26  	return snappy.Encode(dst, src), nil
    27  }
    28  
    29  func (c *Codec) Decode(dst, src []byte) ([]byte, error) {
    30  	return snappy.Decode(dst, src)
    31  }