Class: FixedBytesEncoder (in CharacterEncoderImplementations)

• Inheritance
• Description
• Class protocol
  • queries
• Instance protocol
  • encoding & decoding

Inheritance:

   Object
   |
   +--CharacterEncoder
      |
      +--CharacterEncoderImplementations::FixedBytesEncoder
         |
         +--CharacterEncoderImplementations::SingleByteEncoder
         |
         +--CharacterEncoderImplementations::TwoByteEncoder

Package:

stx:libbasic

Category:

Collections-Text-Encodings

Version:

rev: 1.1 date: 2018/01/19 10:06:11

user: stefan

file: CharacterEncoderImplementations__FixedBytesEncoder.st directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Stefan Vogel

Description:

Common abstract superclass for all encodings which encode to a fixed number of bytes.

Class protocol:

 isAbstract

Return if this class is an abstract class.
True is returned here; false for subclasses.
Abstract subclasses must redefine this again.

 maxCode

** This method raises an error - it must be redefined in concrete classes **

 minCode

Instance protocol:

 decode: anEncoding

given an integer in my encoding, return a unicode codePoint for it

** This method raises an error - it must be redefined in concrete classes **

 decodeString: anEncodedStringOrByteCollection

given a string in my encoding, return a unicode-string for it

usage example(s):

CharacterEncoderImplementations::ISO8859_1 decodeString:'hello'

 encode: aCodePoint

given a codePoint in unicode, return a single byte in my encoding for it

** This method raises an error - it must be redefined in concrete classes **

 encodeCharacter: aUnicodeCharacterOrCodePoint

encode aUnicodeCharacterOrCodePoint to a (8-bit) String or ByteArray

usage example(s):

CharacterEncoderImplementations::ISO8859_10 new encodeCharacter:260 CharacterEncoderImplementations::ISO8859_10 new encodeCharacter:$Ą