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;;; pccl-20.el --- Portable CCL utility for Emacs 20 and XEmacs-21-mule
;; Copyright (C) 1998 Free Software Foundation, Inc.
;; Copyright (C) 1998 Tanaka Akira
;; Author: Tanaka Akira <akr@jaist.ac.jp>
;; Keywords: emulation, compatibility, Mule
;; This file is part of APEL (A Portable Emacs Library).
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2, or (at
;; your option) any later version.
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(eval-when-compile (require 'ccl))
(require 'broken)
(broken-facility ccl-accept-symbol-as-program
"Emacs does not accept symbol as CCL program."
(progn
(define-ccl-program test-ccl-identity
'(1 ((read r0) (loop (write-read-repeat r0)))))
(condition-case nil
(progn
(funcall
(if (fboundp 'ccl-vector-execute-on-string)
'ccl-vector-execute-on-string
'ccl-execute-on-string)
'test-ccl-identity
(make-vector 9 nil)
"")
t)
(error nil)))
t)
(eval-and-compile
(static-if (featurep 'xemacs)
(defadvice make-coding-system (before ccl-compat (name type &rest ad-subr-args) activate)
(when (and (integerp type)
(eq type 4)
(characterp (ad-get-arg 2))
(stringp (ad-get-arg 3))
(consp (ad-get-arg 4))
(symbolp (car (ad-get-arg 4)))
(symbolp (cdr (ad-get-arg 4))))
(setq type 'ccl)
(setq ad-subr-args
(list
(ad-get-arg 3)
(append
(list
'mnemonic (char-to-string (ad-get-arg 2))
'decode (symbol-value (car (ad-get-arg 4)))
'encode (symbol-value (cdr (ad-get-arg 4))))
(ad-get-arg 5)))))))
(if (featurep 'xemacs)
(defun make-ccl-coding-system (name mnemonic docstring decoder encoder)
"\
Define a new CODING-SYSTEM by CCL programs DECODER and ENCODER.
CODING-SYSTEM, DECODER and ENCODER must be symbol."
(make-coding-system
name 'ccl docstring
(list 'mnemonic (char-to-string mnemonic)
'decode (symbol-value decoder)
'encode (symbol-value encoder))))
(defun make-ccl-coding-system
(coding-system mnemonic docstring decoder encoder)
"\
Define a new CODING-SYSTEM by CCL programs DECODER and ENCODER.
CODING-SYSTEM, DECODER and ENCODER must be symbol."
(when-broken ccl-accept-symbol-as-program
(setq decoder (symbol-value decoder))
(setq encoder (symbol-value encoder)))
(make-coding-system coding-system 4 mnemonic docstring
(cons decoder encoder)))
)
(when-broken ccl-accept-symbol-as-program
(when (subrp (symbol-function 'ccl-execute))
(fset 'ccl-vector-program-execute
(symbol-function 'ccl-execute))
(defun ccl-execute (ccl-prog reg)
"\
Execute CCL-PROG with registers initialized by REGISTERS.
If CCL-PROG is symbol, it is dereferenced."
(ccl-vector-program-execute
(if (symbolp ccl-prog) (symbol-value ccl-prog) ccl-prog)
reg)))
(when (subrp (symbol-function 'ccl-execute-on-string))
(fset 'ccl-vector-program-execute-on-string
(symbol-function 'ccl-execute-on-string))
(defun ccl-execute-on-string (ccl-prog status string &optional contin)
"\
Execute CCL-PROG with initial STATUS on STRING.
If CCL-PROG is symbol, it is dereferenced."
(ccl-vector-program-execute-on-string
(if (symbolp ccl-prog) (symbol-value ccl-prog) ccl-prog)
status string contin)))
)
)
(eval-when-compile
(define-ccl-program test-ccl-eof-block
'(1
((read r0)
(write r0)
(read r0))
(write "[EOF]")))
(make-ccl-coding-system
'test-ccl-eof-block-cs ?T "CCL_EOF_BLOCK tester"
'test-ccl-eof-block 'test-ccl-eof-block)
)
(broken-facility ccl-execute-eof-block-on-encoding-null
"Emacs forgets executing CCL_EOF_BLOCK with encoding on empty input. (Fixed on Emacs 20.4)"
(equal (encode-coding-string "" 'test-ccl-eof-block-cs) "[EOF]"))
(broken-facility ccl-execute-eof-block-on-encoding-some
"Emacs forgets executing CCL_EOF_BLOCK with encoding on non-empty input. (Fixed on Emacs 20.3)"
(equal (encode-coding-string "a" 'test-ccl-eof-block-cs) "a[EOF]"))
(broken-facility ccl-execute-eof-block-on-decoding-null
"Emacs forgets executing CCL_EOF_BLOCK with decoding on empty input. (Fixed on Emacs 20.4)"
(equal (decode-coding-string "" 'test-ccl-eof-block-cs) "[EOF]"))
(broken-facility ccl-execute-eof-block-on-decoding-some
"Emacs forgets executing CCL_EOF_BLOCK with decoding on non-empty input. (Fixed on Emacs 20.4)"
(equal (decode-coding-string "a" 'test-ccl-eof-block-cs) "a[EOF]"))
(broken-facility ccl-execute-eof-block-on-encoding
"Emacs may forget executing CCL_EOF_BLOCK with encoding."
(not (or (broken-p 'ccl-execute-eof-block-on-encoding-null)
(broken-p 'ccl-execute-eof-block-on-encoding-some)))
t)
(broken-facility ccl-execute-eof-block-on-decoding
"Emacs may forget executing CCL_EOF_BLOCK with decoding."
(not (or (broken-p 'ccl-execute-eof-block-on-decoding-null)
(broken-p 'ccl-execute-eof-block-on-decoding-some)))
t)
(broken-facility ccl-execute-eof-block
"Emacs may forget executing CCL_EOF_BLOCK."
(not (or (broken-p 'ccl-execute-eof-block-on-encoding)
(broken-p 'ccl-execute-eof-block-on-decoding)))
t)
;;; @ end
;;;
(require 'product)
(product-provide (provide 'pccl-20) (require 'apel-ver))
;;; pccl-20.el ends here
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