TIP #317: EXTEND BINARY ENSEMBLE WITH BINARY ENCODINGS
========================================================
  Version:      $Revision: 1.1 $
  Author:       Pat Thoyts <patthoyts_at_users.sourceforge.net> 
  State:        Draft
  Type:         Project
  Tcl-Version:  8.6
  Vote:         Pending
  Created:      Saturday, 03 May 2008
  URL:          http://www.tcl.tk/cgi-bin/tct/tip/317.html
  Post-History:

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  ABSTRACT
==========

  This TIP extends the *binary* command with implementations in C of
  commonly used binary encodings. In particular the /base64/ encoding is
  implemented but the Tcl ensemble scheme [TIP #112] can be used to
  provide simple extension of the implemented formats.

  SPECIFICATION
===============

  The *binary* command ensemble will be extended to include two new
  subcommands, *encode* and *decode*. Each subcommand will accept two
  arguments. The first is the name of an encoding format and the second
  is the data to be operated upon.

        *binary encode* /format data/

        *binary decode* /format data/

  In keeping with the nature of the *binary* command, the /data/ argument
  is treated as a byte array. This means that users should ensure their
  data is already in a suitable character encoding before applying a
  binary encoding. This is already a requirement for other
  implementations of this functionality (e.g. the tcllib and Trf
  packages).

  The initial set of binary encodings consists of *base64*, *uuencode*
  and *hex*. The implementation of the *encode* and *decode* subcommands
  will make use of the Tcl ensemble command mechanism ([TIP #112]) and
  will therefore be extensible via the ensemble mechanism.

  REFERENCE IMPLEMENTATION
==========================

  A patch against the Tcl HEAD (8.6) is located at
 
<URL:http://sf.net/tracker/?func=detail&aid=1956530&group_id=10894&atid=310894>  


  COPYRIGHT
===========

  This document has been placed in the public domain.

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  TIP AutoGenerator - written by Donal K. Fellows

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