;;;; b a s e 6 4 . s t k 				-- Base 64 support
;;;;
;;;; Copyright © 1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
;;;; 
;;;; Permission to use, copy, and/or distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted, provided
;;;; that both the above copyright notice and this permission notice appear in
;;;; all copies and derived works.  Fees for distribution or use of this
;;;; software or derived works may only be charged with express written
;;;; permission of the copyright holder.  
;;;; This software is provided ``as is'' without express or implied warranty.
;;;;
;;;; $Id: base64.stk 1.1 Mon, 20 Jul 1998 19:44:40 +0200 eg $
;;;;
;;;;           Author: Erick Gallesio [eg@unice.fr]
;;;;    Creation date: 20-Jul-1998 18:43
;;;; Last file update: 20-Jul-1998 19:15


(if (symbol-bound? '%init-base64)
    ;; Html module is in the core interpreter
    (%init-base64)
    ;; Try to load hash table dynamically
    (load (string-append "base64." *shared-suffix*)))


;;;
;;; Public procedures 
;;; 
(define base64-encode-string #f)
(define base64-decode-string #f)


;;;
;;; Impl.
;;;
(let ((encode/decode (lambda (op)
		       (lambda (str)
			 (let ((in  (open-input-string str))
			       (out (open-output-string)))
			   (op in out)
			   (get-output-string out))))))

  (set! base64-encode-string (encode/decode base64-encode))
  (set! base64-decode-string (encode/decode base64-decode)))

(provide "base64")