Class: Base64UrlCoder

• Inheritance
• Description
• Class protocol
  • initialization
• Examples

Inheritance:

   Object
   |
   +--Visitor
      |
      +--AspectVisitor
         |
         +--ObjectCoder
            |
            +--BaseNCoder
               |
               +--Base64Coder
                  |
                  +--Base64UrlCoder

Package:

stx:libbasic2

Category:

System-Storage

Version:

rev: 1.2 date: 2019/12/13 20:32:11

user: cg

file: Base64UrlCoder.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Description:

A variant of base64 encoding which generates url- and filename save encodings.
Same as Base64 except that instead of plus and slash, minus and underline are generated.

The main entry point API is
    Base64UrlCoder encode:aStringOrBytes
and
    Base64UrlCoder decode:aString

If the decoder should return a string, use
    Base64UrlCoder decodeAsString:aString.



[instance variables:]

[class variables:]
    Base64UrlMapping         String   Mapping from bytes (with 6 valid bits)
                                      to Base64Url characters
    Base64UrlReverseMapping  Array    Mapping from Base64Url characters to 6-bit-Bytes

copyright
COPYRIGHT (c) 2018 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.  This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 initializeMappings

initialize class variables

Usage example(s):

Base64UrlMapping := nil. self initializeMappings

 mapping

 reverseMapping

Examples:

   (Base64Coder encode:#[0 0 16r3F]) = 'AAA/'

   (Base64Coder decode:'AAA/') = #[0 0 63]

   (Base64UrlCoder encode:#[0 0 16r3F]) = 'AAA_'

   (Base64UrlCoder decode:'AAA_') = #[0 0 63]