Hash :
cf6ed403
Author :
Thomas de Grivel
Date :
2018-06-04T10:13:54
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;;
;; 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 (ub8-stream)
((underlying-stream :initarg :stream
:accessor stream-underlying-stream
:type character-stream)
(encoding :initarg :format
:initform :utf-8
:accessor stream-encoding
:type symbol)
(mapping)))
(defmethod stream-close ((stream utf8-stream))
(stream-close (stream-underlying-stream stream)))
(defmethod stream-open-p ((stream utf8-stream))
(stream-open-p (stream-underlying-stream stream)))
(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)))))