single-byte/lib/stream.js

Transforms for single-byte encodings

/*       */

                                       

const { encode, decode } = require('./index');

/**
 */
class Encoder extends stream.Transform {
  constructor(encoding        , options    ) {
    super(options);
    this._encoding = encoding;
  }

                    

  _transform(
    chunk                 ,
    encoding        ,
    callback                                                 
  )       {
    callback(null, encode(this._encoding, chunk.toString()));
  }

  /**
   */
  setSingleByteEncoding(encoding        ) {
    this._encoding = encoding;
  }
}

module.exports.Encoder = Encoder;

/**
 */
class Decoder extends stream.Transform {
  constructor(encoding        , options    ) {
    super(options);
    this._encoding = encoding;
  }

                    

  _transform(
    chunk                 ,
    encoding        ,
    callback                                                 
  )       {
    callback(null, decode(this._encoding, Buffer.from(chunk)));
  }

  /**
   */
  setSingleByteEncoding(encoding        ) {
    this._encoding = encoding;
  }
}

module.exports.Decoder = Decoder;