cl-stream/utf8-stream/utf8-stream.lisp

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• Hash : 04472c9c
  Author : Thomas de Grivel
  Date : 2018-06-14T13:39:17
  

  use cl-stream:super-stream

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• utf8-stream.lisp

• ;;
  ;;  utf8-stream  -  charset encoding/decoding layer for cl-stream
  ;;
  ;;  Copyright 2017,2018 Thomas de Grivel <thoxdg@gmail.com>
  ;;
  ;;  Permission to use, copy, modify, and distribute this software for any
  ;;  purpose with or without fee is hereby granted, provided that the above
  ;;  copyright notice and this permission notice appear in all copies.
  ;;
  ;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  ;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  ;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  ;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  ;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  ;;
  
  (in-package :utf8-stream)
  
  (defclass utf8-stream (super-stream ub8-stream)
    ((encoding :initarg :format
               :initform :utf-8
               :accessor stream-encoding
               :type symbol)
     (mapping)))
  
  (defun mapping (stream)
    (if (slot-boundp stream 'mapping)
        (slot-value stream 'mapping)
        (setf (slot-value stream 'mapping)
              (let ((encoding (stream-encoding stream)))
                (babel::lookup-mapping babel::*string-vector-mappings*
                                       encoding)))))
  

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