(defpackage :charcode
(:use :cl #+sbcl :sb-gray #-sbcl :gray)
(:export "MAKE-ENCODER" "MAKE-DECODER" "ENCODE-STRING" "DECODE-STRING" "SYSTEM-CHARSET"
- "CODING-ERROR"
+ "NO-CODEC-ERROR" "CODING-ERROR"
"MAKE-CODEC-CHARACTER-STREAM"
"ASCII" "LATIN-1" "LATIN1" "UTF-8" "UTF8"))
(in-package :charcode)
;;; General stuff
+(define-condition no-codec-error (error)
+ ((codec-name :initarg :codec-name))
+ (:report (lambda (c s)
+ (with-slots (codec-name) c
+ (format s "Could find no codec named ~A." codec-name)))))
+
(define-condition coding-error (error)
((input :initarg :input)
(position :initarg :position)
synonyms)))
(defun make-encoder (name)
- (the encoder-fun (values (funcall (get name 'make-encoder)))))
+ (the encoder-fun (values (funcall (or (get name 'make-encoder)
+ (error 'no-codec-error :codec-name name))))))
(defun make-decoder (name)
- (the decoder-fun (values (funcall (get name 'make-decoder)))))
+ (the decoder-fun (values (funcall (or (get name 'make-decoder)
+ (error 'no-codec-error :codec-name name))))))
(defun system-charset ()
;; XXX: Replace me with something perhaps more sensible.