com.hubspot.imap.utils.parsers.string.AllBytesParser Maven / Gradle / Ivy

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package com.hubspot.imap.utils.parsers.string;

import com.hubspot.imap.utils.SoftReferencedAppendableCharSequence;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.ReplayingDecoder;
import io.netty.util.Signal;
import io.netty.util.internal.AppendableCharSequence;

public class AllBytesParser extends BaseStringParser {

  private static final Signal REPLAYING_SIGNAL;

  static {
    REPLAYING_SIGNAL = Signal.valueOf(ReplayingDecoder.class, "REPLAY");
  }

  public AllBytesParser(SoftReferencedAppendableCharSequence sequenceReference) {
    super(sequenceReference);
  }

  @Override
  public boolean process(byte b) throws Exception {
    seq.append((char) (short) (b & 255));
    size++;

    return true;
  }

  @Override
  public String parse(ByteBuf buffer) {
    AppendableCharSequence sequence = sequenceReference.get();

    int readerIndex = buffer.readerIndex();
    try {
      super.parse(buffer);
    } catch (Signal e) {
      e.expect(REPLAYING_SIGNAL);
      buffer.readerIndex(readerIndex + size);
      return sequence.toString();
    }

    return sequence.toString();
  }
}