Class Base64.Encoder

  • Direct Known Subclasses:
    Base64.SAXEncoder
    Enclosing class:
    Base64

    public abstract static class Base64.Encoder
    extends Object
    An encoder is an object, which is able to encode byte array in blocks of three bytes. Any such block is converted into an array of four bytes.
    • Constructor Detail

      • Encoder

        protected Encoder​(char[] pBuffer,
                          int pWrapSize,
                          String pSep)
        Creates a new instance.
        Parameters:
        pBuffer - The encoders buffer. The encoder will write to the buffer as long as possible. If the buffer is full or the end of data is signaled, then the method writeBuffer(char[], int, int) will be invoked.
        pWrapSize - A nonzero value indicates, that a line wrap should be performed after the given number of characters. The value must be a multiple of 4. Zero indicates, that no line wrap should be performed.
        pSep - The eol sequence being used to terminate a line in case of line wraps. May be null, in which case the default value Base64.LINE_SEPARATOR is being used.
    • Method Detail

      • writeBuffer

        protected abstract void writeBuffer​(char[] pChars,
                                            int pOffset,
                                            int pLen)
                                     throws IOException
        Called for writing the buffer contents to the target.
        Parameters:
        pChars - The buffer being written.
        pOffset - Offset of first character being written.
        pLen - Number of characters being written.
        Throws:
        IOException - Writing to the destination failed.
      • write

        public void write​(byte[] pBuffer,
                          int pOffset,
                          int pLen)
                   throws IOException
        Encodes the given byte array.
        Parameters:
        pBuffer - Byte array being encoded.
        pOffset - Offset of first byte being encoded.
        pLen - Number of bytes being encoded.
        Throws:
        IOException - Invoking the writeBuffer(char[],int,int) method for writing the encoded data failed.