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README.md

Base64 filter plugin for Embulk

An Embulk filter plugin to encode/decode string by Base64, Base32 and Base16.

Overview

  • Plugin type: filter

Configuration

  • columns: Input columns to encode/decode (array of hash, required)
    • name
      • name of input column (string, required)
    • decode, encode
      • whether to encode or decode the value (boolean, default: false)
      • either one must be true and exception is thrown when both are true or both are false
    • encording
      • encording type (string, default: 'Base64')
      • must be one of the follwing, Base64, Base32, Base16
    • urlsafe
      • whether to use urlsafe character in encoded string
      • works only when encording: Base64
    • hex
      • whether to maintain sort order of encoded string
      • works only when encording: Base32

Example

encode

See example_encode.yml and example_encode.csv.

input:

100,A0?B1>,A0?B1>,A0?B1>,A0?B1>,A0?B1>
101,ab?cd~,ab?cd~,ab?cd~,ab?cd~,ab?cd~

output:

$ embulk preview example/example_encode.yml
+---------+---------------+------------------+------------------+------------------+---------------+
| id:long | Base64:string | Base64Url:string |    Base32:string | Base32Hex:string | Base16:string |
+---------+---------------+------------------+------------------+------------------+---------------+
|     100 |      QTA/QjE+ |         QTA_QjE- | IEYD6QRRHY====== | 84O3UGHH7O====== |  41303F42313E |
|     101 |      YWI/Y2R+ |         YWI_Y2R- | MFRD6Y3EPY====== | C5H3UOR4FO====== |  61623F63647E |
+---------+---------------+------------------+------------------+------------------+---------------+

decode

See example_decode.yml and example_decode.csv.

input:

100,QTA/QjE+,QTA_QjE-,IEYD6QRRHY======,84O3UGHH7O======,41303F42313E
101,YWI/Y2R+,YWI_Y2R-,MFRD6Y3EPY======,C5H3UOR4FO======,61623F63647E

output:

$ embulk preview example/example_decode.yml
+---------+---------------+------------------+---------------+------------------+---------------+
| id:long | Base64:string | Base64Url:string | Base32:string | Base32Hex:string | Base16:string |
+---------+---------------+------------------+---------------+------------------+---------------+
|     100 |        A0?B1> |           A0?B1> |        A0?B1> |           A0?B1> |        A0?B1> |
|     101 |        ab?cd~ |           ab?cd~ |        ab?cd~ |           ab?cd~ |        ab?cd~ |
+---------+---------------+------------------+---------------+------------------+---------------+

Limitation

  • Type of input value to be encoded must be string.
  • Type of decoded output value will be string

Build

$ ./gradlew gem  # -t to watch change of files and rebuild continuously

About

An Embulk filter plugin to encode/decode string by Base64, Base32 and Base16

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