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;;; pccl.el --- Portable CCL utility for Mule 2.*
;; Copyright (C) 1998 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@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., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
(require 'broken)
(broken-facility ccl-usable
"Emacs has not CCL."
(and (featurep 'mule)
(if (featurep 'xemacs)
(>= emacs-major-version 21)
(>= emacs-major-version 19))))
(unless-broken ccl-usable
(require 'advice)
(if (featurep 'mule)
(progn
(require 'ccl)
(if (featurep 'xemacs)
(if (>= emacs-major-version 21)
;; for XEmacs 21 with mule
(require 'pccl-20))
(if (>= emacs-major-version 20)
;; for Emacs 20
(require 'pccl-20)
;; for Mule 2.*
(require 'pccl-om)))))
(static-if (or (featurep 'xemacs) (< emacs-major-version 21))
(defadvice define-ccl-program
(before accept-long-ccl-program activate)
"When CCL-PROGRAM is too long, internal buffer is extended automatically."
(let ((try-ccl-compile t)
(prog (eval (ad-get-arg 1))))
(ad-set-arg 1 (` '(, prog)))
(while try-ccl-compile
(setq try-ccl-compile nil)
(condition-case sig
(ccl-compile prog)
(args-out-of-range
(if (and (eq (car (cdr sig)) ccl-program-vector)
(= (car (cdr (cdr sig))) (length ccl-program-vector)))
(setq ccl-program-vector
(make-vector (* 2 (length ccl-program-vector)) 0)
try-ccl-compile t)
(signal (car sig) (cdr sig)))))))))
(static-when (and (not (featurep 'xemacs)) (< emacs-major-version 21))
(defun-maybe transform-make-coding-system-args (name type &optional doc-string props)
"For internal use only.
Transform XEmacs style args for `make-coding-system' to Emacs style.
Value is a list of transformed arguments."
(let ((mnemonic (string-to-char (or (plist-get props 'mnemonic) "?")))
(eol-type (plist-get props 'eol-type))
properties tmp)
(cond
((eq eol-type 'lf) (setq eol-type 'unix))
((eq eol-type 'crlf) (setq eol-type 'dos))
((eq eol-type 'cr) (setq eol-type 'mac)))
(if (setq tmp (plist-get props 'post-read-conversion))
(setq properties (plist-put properties 'post-read-conversion tmp)))
(if (setq tmp (plist-get props 'pre-write-conversion))
(setq properties (plist-put properties 'pre-write-conversion tmp)))
(cond
((eq type 'shift-jis)
(` ((, name) 1 (, mnemonic) (, doc-string)
nil (, properties) (, eol-type))))
((eq type 'iso2022) ; This is not perfect.
(if (plist-get props 'escape-quoted)
(error "escape-quoted is not supported: %S"
(` ((, name) (, type) (, doc-string) (, props)))))
(let ((g0 (plist-get props 'charset-g0))
(g1 (plist-get props 'charset-g1))
(g2 (plist-get props 'charset-g2))
(g3 (plist-get props 'charset-g3))
(use-roman
(and
(eq (cadr (assoc 'latin-jisx0201
(plist-get props 'input-charset-conversion)))
'ascii)
(eq (cadr (assoc 'ascii
(plist-get props 'output-charset-conversion)))
'latin-jisx0201)))
(use-oldjis
(and
(eq (cadr (assoc 'japanese-jisx0208-1978
(plist-get props 'input-charset-conversion)))
'japanese-jisx0208)
(eq (cadr (assoc 'japanese-jisx0208
(plist-get props 'output-charset-conversion)))
'japanese-jisx0208-1978))))
(if (charsetp g0)
(if (plist-get props 'force-g0-on-output)
(setq g0 (` (nil (, g0))))
(setq g0 (` ((, g0) t)))))
(if (charsetp g1)
(if (plist-get props 'force-g1-on-output)
(setq g1 (` (nil (, g1))))
(setq g1 (` ((, g1) t)))))
(if (charsetp g2)
(if (plist-get props 'force-g2-on-output)
(setq g2 (` (nil (, g2))))
(setq g2 (` ((, g2) t)))))
(if (charsetp g3)
(if (plist-get props 'force-g3-on-output)
(setq g3 (` (nil (, g3))))
(setq g3 (` ((, g3) t)))))
(` ((, name) 2 (, mnemonic) (, doc-string)
((, g0) (, g1) (, g2) (, g3)
(, (plist-get props 'short))
(, (not (plist-get props 'no-ascii-eol)))
(, (not (plist-get props 'no-ascii-cntl)))
(, (plist-get props 'seven))
t
(, (not (plist-get props 'lock-shift)))
(, use-roman)
(, use-oldjis)
(, (plist-get props 'no-iso6429))
nil nil nil nil)
(, properties) (, eol-type)))))
((eq type 'big5)
(` ((, name) 3 (, mnemonic) (, doc-string)
nil (, properties) (, eol-type))))
((eq type 'ccl)
(` ((, name) 4 (, mnemonic) (, doc-string)
((, (plist-get props 'decode)) . (, (plist-get props 'encode)))
(, properties) (, eol-type))))
(t
(error "unsupported XEmacs style make-coding-style arguments: %S"
(` ((, name) (, type) (, doc-string) (, props))))))))
(defadvice make-coding-system
(before ccl-compat (name type &rest ad-subr-args) activate)
"Emulate XEmacs style make-coding-system."
(when (and (symbolp type) (not (memq type '(t nil))))
(let ((args (apply 'transform-make-coding-system-args
name type ad-subr-args)))
(setq type (cadr args)
ad-subr-args (cddr args)))))))
;;; @ end
;;;
(require 'product)
(product-provide (provide 'pccl) (require 'apel-ver))
;;; pccl.el ends here
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