Module seppiko.commons.utils
Package org.seppiko.commons.utils.codec

Interface BaseNCodec

All Known Implementing Classes:
Base16, Base32, Base64Ext
public interface BaseNCodec
Abstract superclass for Base-N encoders and decoders.
Author:
Leonard Woo

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    BIT_WIDTH
    bits width
    static final int
    BITS_PER_ENCODED_BYTE
    bits per encoded
    static final int
    BYTES_PER_ENCODED_BLOCK
    bytes pre encoded
    static final long
    MASK_2BITS
    Mask used to extract 2 bits, used when decoding character.
    static final long
    MASK_4BITS
    Mask used to extract 4 bits, used when decoding character.
    static final long
    MASK_5BITS
    Mask used to extract 5 bits, used when encoding bytes
    static final long
    MASK_6BITS
    Mask used to extract 6 bits, used when encoding bytes
    static final long
    MASK_8BITS
    Mask used to extract 8 bits, used in decoding bytes
    static final long
    MASK_UPPER_4BITS
    Mask used to extract the upper 4 bits, used when decoding character.

  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    decode(String data)
    Decode the BaseN-encoded data in input and return the data in a new byte array.
    String
    encodeString(byte[] data)
    BaseN-encode the given data and return a newly allocated String with the result.

  • Field Details

    • MASK_8BITS

      static final long MASK_8BITS
      Mask used to extract 8 bits, used in decoding bytes
      See Also:

    • MASK_6BITS

      static final long MASK_6BITS
      Mask used to extract 6 bits, used when encoding bytes
      See Also:

    • MASK_5BITS

      static final long MASK_5BITS
      Mask used to extract 5 bits, used when encoding bytes
      See Also:

    • MASK_4BITS

      static final long MASK_4BITS
      Mask used to extract 4 bits, used when decoding character.
      See Also:

    • MASK_2BITS

      static final long MASK_2BITS
      Mask used to extract 2 bits, used when decoding character.
      See Also:

    • MASK_UPPER_4BITS

      static final long MASK_UPPER_4BITS
      Mask used to extract the upper 4 bits, used when decoding character.
      See Also:

    • BITS_PER_ENCODED_BYTE

      static final int BITS_PER_ENCODED_BYTE
      bits per encoded
      See Also:

    • BYTES_PER_ENCODED_BLOCK

      static final int BYTES_PER_ENCODED_BLOCK
      bytes pre encoded
      See Also:

    • BIT_WIDTH

      static final int BIT_WIDTH
      bits width
      See Also:

  • Method Details

    • encodeString

      String encodeString(byte[] data)
      BaseN-encode the given data and return a newly allocated String with the result.
      Parameters:
      data - the data to encode.
      Returns:
      a newly allocated String with the result.

    • decode

      byte[] decode(String data) throws IllegalArgumentException, NullPointerException
      Decode the BaseN-encoded data in input and return the data in a new byte array.
      Parameters:
      data - the data to decode.
      Returns:
      the data in a new byte array.
      Throws:
      IllegalArgumentException - data something is wrong.
      NullPointerException - data is null.