-;;; encoded-kb.el --- handler to input multibyte characters encoded somehow
-
-;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
-;; Licensed to the Free Software Foundation.
-;; Copyright (C) 2002 Free Software Foundation, Inc.
-;; Copyright (C) 2003
-;; National Institute of Advanced Industrial Science and Technology (AIST)
-;; Registration Number H13PRO009
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs 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.
-
-;; GNU Emacs 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.
-
-;;; Commentary:
-
-;;; Code:
-
-(defconst encoded-kbd-mode-map (make-sparse-keymap)
- "Keymap for Encoded-kbd minor mode.")
-
-;; Subsidiary keymaps for handling ISO2022 escape sequences.
-
-(defvar encoded-kbd-iso2022-esc-map
- (let ((map (make-sparse-keymap)))
- (define-key map "$" 'encoded-kbd-iso2022-esc-dollar-prefix)
- (define-key map "(" 'encoded-kbd-iso2022-designation-prefix)
- (define-key map ")" 'encoded-kbd-iso2022-designation-prefix)
- (define-key map "," 'encoded-kbd-iso2022-designation-prefix)
- (define-key map "-" 'encoded-kbd-iso2022-designation-prefix)
- map)
- "Keymap for handling ESC code in Encoded-kbd mode.")
-(fset 'encoded-kbd-iso2022-esc-prefix encoded-kbd-iso2022-esc-map)
-
-(defvar encoded-kbd-iso2022-esc-dollar-map
- (let ((map (make-sparse-keymap)))
- (define-key map "(" 'encoded-kbd-iso2022-designation-prefix)
- (define-key map ")" 'encoded-kbd-iso2022-designation-prefix)
- (define-key map "," 'encoded-kbd-iso2022-designation-prefix)
- (define-key map "-" 'encoded-kbd-iso2022-designation-prefix)
- (define-key map "@" 'encoded-kbd-iso2022-designation)
- (define-key map "A" 'encoded-kbd-iso2022-designation)
- (define-key map "B" 'encoded-kbd-iso2022-designation)
- map)
- "Keymap for handling ESC $ sequence in Encoded-kbd mode.")
-(fset 'encoded-kbd-iso2022-esc-dollar-prefix
- encoded-kbd-iso2022-esc-dollar-map)
-
-(defvar encoded-kbd-iso2022-designation-map
- (let ((map (make-sparse-keymap))
- (l charset-list)
- final-char)
- (while l
- (setq final-char (charset-iso-final-char (car l)))
- (if (> final-char 0)
- (define-key map (char-to-string final-char)
- 'encoded-kbd-iso2022-designation))
- (setq l (cdr l)))
- map)
- "Keymap for handling ISO2022 designation sequence in Encoded-kbd mode.")
-(fset 'encoded-kbd-iso2022-designation-prefix
- encoded-kbd-iso2022-designation-map)
-
-(defvar encoded-kbd-iso2022-non-ascii-map
- (let ((map (make-keymap))
- (i 32))
- (while (< i 128)
- (define-key map (char-to-string i) 'encoded-kbd-self-insert-iso2022-7bit)
- (setq i (1+ i)))
- (define-key map "\e" 'encoded-kbd-iso2022-esc-prefix)
- (setq i 160)
- (while (< i 256)
- (define-key map (vector i) 'encoded-kbd-handle-8bit)
- (setq i (1+ i)))
- map)
- "Keymap for handling non-ASCII character set in Encoded-kbd mode.")
-
-;; One of the symbols `sjis', `iso2022-7', `iso2022-8', `big5', or
-;; `utf-8' to denote what kind of coding-system we are now handling in
-;; Encoded-kbd mode.
-(defvar encoded-kbd-coding nil)
-
-;; Keep information of designation state of ISO2022 encoding. When
-;; Encoded-kbd mode is on, this is set to a vector of length 4, the
-;; elements are character sets currently designated to graphic
-;; registers 0 thru 3.
-
-(defvar encoded-kbd-iso2022-designations nil)
-(put 'encoded-kbd-iso2022-designations 'permanent-local t)
-
-;; Keep information of invocation state of ISO2022 encoding. When
-;; Encoded-kbd mode is on, this is set to a vector of length 3,
-;; graphic register numbers currently invoked to graphic plane 1 and
-;; 2, and a single shifted graphic register number.
-
-(defvar encoded-kbd-iso2022-invocations nil)
-(put 'encoded-kbd-iso2022-invocations 'permanent-local t)
-
-(defun encoded-kbd-iso2022-designation ()
- "Do ISO2022 designation according to the current key in Encoded-kbd mode.
-The following key sequence may cause multilingual text insertion."
- (interactive)
- (let ((key-seq (this-command-keys))
- (prev-g0-charset (aref encoded-kbd-iso2022-designations
- (aref encoded-kbd-iso2022-invocations 0)))
- intermediate-char final-char
- reg dimension chars charset)
- (if (= (length key-seq) 4)
- ;; ESC $ <intermediate-char> <final-char>
- (setq intermediate-char (aref key-seq 2)
- dimension 2
- chars (if (< intermediate-char ?,) 94 96)
- final-char (aref key-seq 3)
- reg (mod intermediate-char 4))
- (if (= (aref key-seq 1) ?$)
- ;; ESC $ <final-char>
- (setq dimension 2
- chars 94
- final-char (aref key-seq 2)
- reg 0)
- ;; ESC <intermediate-char> <final-char>
- (setq intermediate-char (aref key-seq 1)
- dimension 1
- chars (if (< intermediate-char ?,) 94 96)
- final-char (aref key-seq 2)
- reg (mod intermediate-char 4))))
- (if (setq charset (iso-charset dimension chars final-char))
- (aset encoded-kbd-iso2022-designations reg charset)
- (error "Character set of DIMENSION %s, CHARS %s, FINAL-CHAR `%c' is not supported"
- dimension chars final-char))
-
- (if (memq (aref encoded-kbd-iso2022-designations
- (aref encoded-kbd-iso2022-invocations 0))
- '(ascii latin-jisx0201))
- ;; Graphic plane 0 (0x20..0x7f) is for ASCII. We don't have
- ;; to handle characters in this range specially.
- (if (not (memq prev-g0-charset '(ascii latin-jisx0201)))
- ;; We must exit recursive edit now.
- (throw 'exit nil))
- ;; Graphic plane 0 is for non-ASCII.
- (if (memq prev-g0-charset '(ascii latin-jisx0201))
- ;; We must handle keys specially.
- (let ((overriding-local-map encoded-kbd-iso2022-non-ascii-map))
- (recursive-edit))))))
-
-(defun encoded-kbd-handle-8bit ()
- "Handle an 8-bit character entered in Encoded-kbd mode."
- (interactive)
- (cond ((eq encoded-kbd-coding 'iso2022-7)
- (error "Can't handle the character code %d" last-command-char))
-
- ((eq encoded-kbd-coding 'iso2022-8)
- (cond ((= last-command-char ?\216)
- (aset encoded-kbd-iso2022-invocations 2 2))
-
- ((= last-command-char ?\217)
- (aset encoded-kbd-iso2022-invocations 2 3))
-
- ((>= last-command-char ?\240)
- (encoded-kbd-self-insert-iso2022-8bit 1))
-
- (t
- (error "Can't handle the character code %d"
- last-command-char))))
-
- ((eq encoded-kbd-coding 'sjis)
- (encoded-kbd-self-insert-sjis))
-
- (t
- (encoded-kbd-self-insert-big5))))
-
-(defun encoded-kbd-self-insert-iso2022-7bit ()
- (interactive)
- (let* ((charset (aref encoded-kbd-iso2022-designations
- (or (aref encoded-kbd-iso2022-invocations 2)
- (aref encoded-kbd-iso2022-invocations 0))))
- (char (if (= (charset-dimension charset) 1)
- (make-char charset last-command-char)
- (make-char charset last-command-char (read-char-exclusive)))))
- (aset encoded-kbd-iso2022-invocations 2 nil)
- (setq unread-command-events (cons char unread-command-events))))
-
-(defun encoded-kbd-self-insert-iso2022-8bit (arg)
- (interactive "p")
- (cond
- ((= last-command-char ?\216) ; SS2 (Single Shift 2)
- (aset encoded-kbd-iso2022-invocations 2 2))
- ((= last-command-char ?\217) ; SS3 (Single Shift 3)
- (aset encoded-kbd-iso2022-invocations 2 3))
- (t
- (let* ((charset (aref encoded-kbd-iso2022-designations
- (or (aref encoded-kbd-iso2022-invocations 2)
- (aref encoded-kbd-iso2022-invocations 1))))
- (char (if (= (charset-dimension charset) 1)
- (make-char charset last-command-char)
- (make-char charset last-command-char
- (read-char-exclusive)))))
- (aset encoded-kbd-iso2022-invocations 2 nil)
- ;; As simply setting unread-command-events may result in
- ;; infinite-loop for characters 160..255, this is a temporary
- ;; workaround until we found a better solution.
- (let ((last-command-char char))
- (self-insert-command arg))))))
-
-(defun encoded-kbd-self-insert-sjis ()
- (interactive)
- (let ((char (if (or (< last-command-char ?\xA0) (>= last-command-char ?\xE0))
- (decode-sjis-char (+ (ash last-command-char 8)
- (read-char-exclusive)))
- (make-char 'katakana-jisx0201 last-command-char))))
- (setq unread-command-events (cons char unread-command-events))))
-
-(defun encoded-kbd-self-insert-big5 ()
- (interactive)
- (let ((char (decode-big5-char (+ (ash last-command-char 8)
- (read-char-exclusive)))))
- (setq unread-command-events (cons char unread-command-events))))
-
-(defun encoded-kbd-self-insert-ccl ()
- (interactive)
- (let ((str (char-to-string last-command-char))
- (ccl (coding-system-get (keyboard-coding-system) :ccl-decoder))
- (vec [nil nil nil nil nil nil nil nil nil])
- result)
- (while (= (length (setq result (ccl-execute-on-string ccl vec str t))) 0)
- (dotimes (i 9) (aset vec i nil))
- (setq str (format "%s%c" str (read-char-exclusive))))
- (setq unread-command-events
- (append result unread-command-events))))
-
-(defun encoded-kbd-self-insert-charset (arg)
- (interactive "p")
- (let* ((charset-list
- (coding-system-get (keyboard-coding-system) :charset-list))
- (charset (car charset-list))
- ;; For the moment, we can assume that the length of CHARSET-LIST
- ;; is 1, and the dimension of CHARSET is 1.
- (c (decode-char charset last-command-char)))
- (unless c
- (error "Can't decode the code point %d by %s"
- last-command-char charset))
- ;; As simply setting unread-command-events may result in
- ;; infinite-loop for characters 160..255, this is a temporary
- ;; workaround until we found a better solution.
- (let ((last-command-char c))
- (self-insert-command arg))))
-
-(defun encoded-kbd-self-insert-utf-8 (arg)
- (interactive "p")
- (let (len ch)
- (cond ((< last-command-char #xE0)
- (setq len 1 ch (logand last-command-char #x1F)))
- ((< last-command-char #xF0)
- (setq len 2 ch (logand last-command-char #x0F)))
- ((< last-command-char #xF8)
- (setq len 3 ch (logand last-command-char #x07)))
- (t
- (setq len 4 ch 0)))
- (while (> len 0)
- (setq ch (logior (lsh ch 6) (logand (read-char-exclusive) #x3F))
- len (1- len)))
- (let ((last-command-char ch))
- (self-insert-command arg))))
-
-(defun encoded-kbd-setup-keymap (coding)
- ;; At first, reset the keymap.
- (setcdr encoded-kbd-mode-map nil)
- ;; Then setup the keymap according to the keyboard coding system.
- (cond
- ((eq encoded-kbd-coding 'charset)
- (let* ((charset (car (coding-system-get coding :charset-list)))
- (code-space (get-charset-property charset :code-space))
- (from (max (aref code-space 0) 128))
- (to (aref code-space 1)))
- (while (<= from to)
- (define-key encoded-kbd-mode-map
- (vector from) 'encoded-kbd-self-insert-charset)
- (setq from (1+ from)))))
-
- ((eq encoded-kbd-coding 'sjis)
- (let ((i 128))
- (while (< i 256)
- (define-key encoded-kbd-mode-map
- (vector i) 'encoded-kbd-self-insert-sjis)
- (setq i (1+ i)))))
-
- ((eq encoded-kbd-coding 'big5)
- (let ((i 161))
- (while (< i 255)
- (define-key encoded-kbd-mode-map
- (vector i) 'encoded-kbd-self-insert-big5)
- (setq i (1+ i)))))
-
- ((eq encoded-kbd-coding 'iso2022-7)
- (define-key encoded-kbd-mode-map "\e" 'encoded-kbd-iso2022-esc-prefix))
-
- ((eq encoded-kbd-coding 'iso2022-8)
- (define-key encoded-kbd-mode-map
- (vector ?\216) 'encoded-kbd-self-insert-iso2022-8bit)
- (define-key encoded-kbd-mode-map
- (vector ?\217) 'encoded-kbd-self-insert-iso2022-8bit)
- (let ((i 160))
- (while (< i 256)
- (define-key encoded-kbd-mode-map
- (vector i) 'encoded-kbd-self-insert-iso2022-8bit)
- (setq i (1+ i)))))
-
- ((eq encoded-kbd-coding 'ccl)
- (let ((valid-codes (or (coding-system-get coding :valid)
- '((128 . 255))))
- elt from to)
- (while valid-codes
- (setq elt (car valid-codes) valid-codes (cdr valid-codes))
- (if (consp elt)
- (setq from (car elt) to (cdr elt))
- (setq from (setq to elt)))
- (while (<= from to)
- (if (>= from 128)
- (define-key encoded-kbd-mode-map
- (vector from) 'encoded-kbd-self-insert-ccl))
- (setq from (1+ from))))))
-
- ((eq encoded-kbd-coding 'utf-8)
- (let ((i #xC0))
- (while (< i 256)
- (define-key encoded-kbd-mode-map
- (vector i) 'encoded-kbd-self-insert-utf-8)
- (setq i (1+ i)))))
-
- (t
- (error "Invalid value in encoded-kbd-coding: %s" encoded-kbd-coding))))
-
-
-;; Input mode at the time Encoded-kbd mode is turned on is saved here.
-(defvar saved-input-mode nil)
-
-(put 'encoded-kbd-mode 'permanent-local t)
-;;;###autoload
-(define-minor-mode encoded-kbd-mode
- "Toggle Encoded-kbd minor mode.
-With arg, turn Encoded-kbd mode on if and only if arg is positive.
-
-You should not turn this mode on manually, instead use the command
-\\[set-keyboard-coding-system] which turns on or off this mode
-automatically.
-
-In Encoded-kbd mode, a text sent from keyboard is accepted
-as a multilingual text encoded in a coding system set by
-\\[set-keyboard-coding-system]."
- :global t
- ;; We must at first reset input-mode to the original.
- (if saved-input-mode (apply 'set-input-mode saved-input-mode))
- (if encoded-kbd-mode
- (let ((coding (keyboard-coding-system)))
- (setq saved-input-mode (current-input-mode))
- (cond ((null coding)
- (setq encoded-kbd-mode nil)
- (error "No coding system for keyboard input is set"))
-
- ((eq (coding-system-type coding) 'shift-jis)
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'sjis))
-
- ((eq (coding-system-type coding) 'iso-2022)
- (if (memq '7-bit (coding-system-get coding :flags))
- (setq encoded-kbd-coding 'iso2022-7)
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'iso2022-8))
- (setq encoded-kbd-iso2022-designations
- (coding-system-get coding :designation))
- (setq encoded-kbd-iso2022-invocations (make-vector 3 nil))
- (aset encoded-kbd-iso2022-invocations 0 0)
- (aset encoded-kbd-iso2022-invocations 1 1))
-
- ((eq (coding-system-type coding) 'big5)
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'big5))
-
- ((eq (coding-system-type coding) 'ccl)
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'ccl))
-
- ((and (eq (coding-system-type coding) 'charset)
- (let* ((charset-list (coding-system-get coding
- :charset-list))
- (charset (car charset-list)))
- (and (= (length charset-list) 1)
- (= (charset-dimension charset) 1))))
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'charset))
-
- ((eq (coding-system-type coding) 'utf-8)
- (set-input-mode
- (nth 0 saved-input-mode) (nth 1 saved-input-mode)
- 'use-8th-bit (nth 3 saved-input-mode))
- (setq encoded-kbd-coding 'utf-8))
-
- (t
- (setq encoded-kbd-mode nil)
- (error "Coding-system `%s' is not supported in Encoded-kbd mode"
- (keyboard-coding-system))))
- (encoded-kbd-setup-keymap coding))))
-
-(provide 'encoded-kb)
-
-;;; arch-tag: 76f0f9b3-65e7-45c3-b692-59509a87ad44
-;;; encoded-kb.el ends here
+;;; encoded-kb.el --- handler to input multibyte characters encoded somehow
+
+;; Copyright (C) 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2004, 2005
+;; National Institute of Advanced Industrial Science and Technology (AIST)
+;; Registration Number H14PRO021
+;; Copyright (C) 2003
+;; National Institute of Advanced Industrial Science and Technology (AIST)
+;; Registration Number H13PRO009
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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.
+
+;;; Commentary:
+
+;;; Code:
+
+;; Usually this map is empty (even if Encoded-kbd mode is on), but if
+;; the keyboard coding system is iso-2022-based, it defines dummy key
+;; bindings for ESC $ ..., etc. so that those bindings in
+;; key-translation-map take effect.
+(defconst encoded-kbd-mode-map (make-sparse-keymap)
+ "Keymap for Encoded-kbd minor mode.")
+
+;; Subsidiary keymaps for handling ISO2022 escape sequences.
+
+(defvar encoded-kbd-iso2022-esc-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "$" 'encoded-kbd-iso2022-esc-dollar-prefix)
+ (define-key map "(" 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map ")" 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map "," 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map "-" 'encoded-kbd-iso2022-designation-prefix)
+ map)
+ "Keymap for handling ESC code in Encoded-kbd mode.")
+(fset 'encoded-kbd-iso2022-esc-prefix encoded-kbd-iso2022-esc-map)
+
+(defvar encoded-kbd-iso2022-esc-dollar-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "(" 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map ")" 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map "," 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map "-" 'encoded-kbd-iso2022-designation-prefix)
+ (define-key map "@" 'encoded-kbd-iso2022-designation)
+ (define-key map "A" 'encoded-kbd-iso2022-designation)
+ (define-key map "B" 'encoded-kbd-iso2022-designation)
+ map)
+ "Keymap for handling ESC $ sequence in Encoded-kbd mode.")
+(fset 'encoded-kbd-iso2022-esc-dollar-prefix
+ encoded-kbd-iso2022-esc-dollar-map)
+
+(defvar encoded-kbd-iso2022-designation-map
+ (let ((map (make-sparse-keymap))
+ (l charset-list)
+ final-char)
+ (while l
+ (setq final-char (charset-iso-final-char (car l)))
+ (if (> final-char 0)
+ (define-key map (char-to-string final-char)
+ 'encoded-kbd-iso2022-designation))
+ (setq l (cdr l)))
+ map)
+ "Keymap for handling ISO2022 designation sequence in Encoded-kbd mode.")
+(fset 'encoded-kbd-iso2022-designation-prefix
+ encoded-kbd-iso2022-designation-map)
+
+;; Keep information of designation state of ISO2022 encoding. When
+;; Encoded-kbd mode is on, this is set to a vector of length 4, the
+;; elements are character sets currently designated to graphic
+;; registers 0 thru 3.
+
+(defvar encoded-kbd-iso2022-designations nil)
+(put 'encoded-kbd-iso2022-designations 'permanent-local t)
+
+;; Keep information of invocation state of ISO2022 encoding. When
+;; Encoded-kbd mode is on, this is set to a vector of length 3,
+;; graphic register numbers currently invoked to graphic plane 1 and
+;; 2, and a single shifted graphic register number.
+
+(defvar encoded-kbd-iso2022-invocations nil)
+(put 'encoded-kbd-iso2022-invocations 'permanent-local t)
+
+(defsubst encoded-kbd-last-key ()
+ (let ((keys (this-single-command-keys)))
+ (aref keys (1- (length keys)))))
+
+(defun encoded-kbd-iso2022-designation (ignore)
+ "Do ISO2022 designation according to the current key in Encoded-kbd mode.
+The following key sequence may cause multilingual text insertion."
+ (let ((key-seq (this-single-command-keys))
+ (prev-g0-charset (aref encoded-kbd-iso2022-designations
+ (aref encoded-kbd-iso2022-invocations 0)))
+ intermediate-char final-char
+ reg dimension chars charset)
+ (if (= (length key-seq) 4)
+ ;; ESC $ <intermediate-char> <final-char>
+ (setq intermediate-char (aref key-seq 2)
+ dimension 2
+ chars (if (< intermediate-char ?,) 94 96)
+ final-char (aref key-seq 3)
+ reg (mod intermediate-char 4))
+ (if (= (aref key-seq 1) ?$)
+ ;; ESC $ <final-char>
+ (setq dimension 2
+ chars 94
+ final-char (aref key-seq 2)
+ reg 0)
+ ;; ESC <intermediate-char> <final-char>
+ (setq intermediate-char (aref key-seq 1)
+ dimension 1
+ chars (if (< intermediate-char ?,) 94 96)
+ final-char (aref key-seq 2)
+ reg (mod intermediate-char 4))))
+ (aset encoded-kbd-iso2022-designations reg
+ (iso-charset dimension chars final-char)))
+ "")
+
+(defun encoded-kbd-iso2022-single-shift (ignore)
+ (let ((char (encoded-kbd-last-key)))
+ (aset encoded-kbd-iso2022-invocations 2 (if (= char ?\216) 2 3)))
+ "")
+
+(defun encoded-kbd-self-insert-iso2022-7bit (ignore)
+ (let ((char (encoded-kbd-last-key))
+ (charset (aref encoded-kbd-iso2022-designations
+ (or (aref encoded-kbd-iso2022-invocations 2)
+ (aref encoded-kbd-iso2022-invocations 0)))))
+ (aset encoded-kbd-iso2022-invocations 2 nil)
+ (vector (if (= (charset-dimension charset) 1)
+ (make-char charset char)
+ (make-char charset char (read-char-exclusive))))))
+
+(defun encoded-kbd-self-insert-iso2022-8bit (ignore)
+ (let ((char (encoded-kbd-last-key))
+ (charset (aref encoded-kbd-iso2022-designations
+ (or (aref encoded-kbd-iso2022-invocations 2)
+ (aref encoded-kbd-iso2022-invocations 1)))))
+ (aset encoded-kbd-iso2022-invocations 2 nil)
+ (vector (if (= (charset-dimension charset) 1)
+ (make-char charset char)
+ (make-char charset char (read-char-exclusive))))))
+
+(defun encoded-kbd-self-insert-sjis (ignore)
+ (let ((char (encoded-kbd-last-key)))
+ (vector
+ (if (or (< char ?\xA0) (>= char ?\xE0))
+ (decode-sjis-char (+ (ash char 8) (read-char-exclusive)))
+ (make-char 'katakana-jisx0201 char)))))
+
+(defun encoded-kbd-self-insert-big5 (ignore)
+ (let ((char (encoded-kbd-last-key)))
+ (vector
+ (decode-big5-char (+ (ash char 8) (read-char-exclusive))))))
+
+(defun encoded-kbd-self-insert-ccl (ignore)
+ (let ((str (char-to-string (encoded-kbd-last-key)))
+ (ccl (coding-system-get (keyboard-coding-system) :ccl-decoder))
+ (vec [nil nil nil nil nil nil nil nil nil])
+ result)
+ (while (= (length (setq result (ccl-execute-on-string ccl vec str t))) 0)
+ (dotimes (i 9) (aset vec i nil))
+ (setq str (format "%s%c" str (read-char-exclusive))))
+ (vector (aref result 0))))
+
+
+;; Decode list of codes in CODE-LIST by CHARSET and return the decoded
+;; characters. If CODE-LIST is too short for the dimension of
+;; CHARSET, read new codes and append them to the tail of CODE-LIST.
+;; Return nil if CODE-LIST can't be decoded.
+
+(defun encoded-kbd-decode-code-list (charset code-list)
+ (let ((dimension (charset-dimension charset))
+ code)
+ (while (> dimension (length code-list))
+ (nconc code-list (list (read-char-exclusive))))
+ (setq code (car code-list))
+ (if (= dimension 1)
+ (decode-char charset code)
+ (setq code-list (cdr code-list)
+ code (logior (lsh code 8) (car code-list)))
+ (if (= dimension 2)
+ (decode-char charset code)
+ (setq code-list (cdr code-list)
+ code (logior (lsh code 8) (car code-list)))
+ (if (= dimension 3)
+ (decode-char charset code)
+ ;; As Emacs can't handle full 32-bit integer, we must give a
+ ;; cons of higher and lower 16-bit codes to decode-char.
+ (setq code (cons (lsh code -8)
+ (logior (lsh (car code-list) 8) (cadr code-list))))
+ (decode-char charset code))))))
+
+(defun encoded-kbd-self-insert-charset (ignore)
+ (let ((charset-list
+ (coding-system-get (keyboard-coding-system) :charset-list))
+ (code-list (list (encoded-kbd-last-key)))
+ tail char)
+ (while (and charset-list (not char))
+ (setq char (encoded-kbd-decode-code-list (car charset-list) code-list)
+ charset-list (cdr charset-list)))
+ (if char
+ (vector char)
+ (setq unread-command-events (cdr code-list))
+ (vector (car code-list)))))
+
+(defun encoded-kbd-self-insert-utf-8 (arg)
+ (interactive "p")
+ (let ((char (encoded-kbd-last-key))
+ len)
+ (cond ((< char #xE0)
+ (setq len 1 char (logand char #x1F)))
+ ((< char #xF0)
+ (setq len 2 char (logand char #x0F)))
+ ((< char #xF8)
+ (setq len 3 char (logand char #x07)))
+ (t
+ (setq len 4 char 0)))
+ (while (> len 0)
+ (setq char (logior (lsh char 6) (logand (read-char-exclusive) #x3F))
+ len (1- len)))
+ (vector char)))
+
+(defun encoded-kbd-setup-keymap (coding)
+ ;; At first, reset the keymap.
+ (define-key encoded-kbd-mode-map "\e" nil)
+ ;; Then setup the keymap according to the keyboard coding system.
+ (cond
+ ((eq (coding-system-type coding) 'shift-jis)
+ (let ((i 128))
+ (while (< i 256)
+ (define-key key-translation-map
+ (vector i) 'encoded-kbd-self-insert-sjis)
+ (setq i (1+ i))))
+ 8)
+
+ ((eq (coding-system-type coding) 'charset)
+ (dolist (elt (mapcar
+ #'(lambda (x)
+ (let ((dim (charset-dimension x))
+ (code-space (get-charset-property x :code-space)))
+ (cons (aref code-space (* (1- dim) 2))
+ (aref code-space (1+ (* (1- dim) 2))))))
+ (coding-system-get coding :charset-list)))
+ (let ((from (max (car elt) 128))
+ (to (cdr elt)))
+ (while (<= from to)
+ (define-key key-translation-map
+ (vector from) 'encoded-kbd-self-insert-charset)
+ (setq from (1+ from)))))
+ 8)
+
+ ((eq (coding-system-type coding) 'iso-2022)
+ (let ((flags (coding-system-get coding :flags))
+ (designation (coding-system-get coding :designation)))
+ (if (memq 'locking-shift flags)
+ nil ; Don't support locking-shift.
+ (setq encoded-kbd-iso2022-designations (make-vector 4 nil)
+ encoded-kbd-iso2022-invocations (make-vector 3 nil))
+ (dotimes (i 4)
+ (if (aref designation i)
+ (if (charsetp (aref designation i))
+ (aset encoded-kbd-iso2022-designations
+ i (aref designation i))
+ (if (charsetp (car-safe (aref designation i)))
+ (aset encoded-kbd-iso2022-designations
+ i (car (aref designation i)))))))
+ (aset encoded-kbd-iso2022-invocations 0 0)
+ (if (aref encoded-kbd-iso2022-designations 1)
+ (aset encoded-kbd-iso2022-invocations 1 1))
+ (when (memq 'designation flags)
+ (define-key encoded-kbd-mode-map "\e" 'encoded-kbd-iso2022-esc-prefix)
+ (define-key key-translation-map "\e" 'encoded-kbd-iso2022-esc-prefix))
+ (when (or (aref designation 2) (aref designation 3))
+ (define-key key-translation-map
+ [?\216] 'encoded-kbd-iso2022-single-shift)
+ (define-key key-translation-map
+ [?\217] 'encoded-kbd-iso2022-single-shift))
+ (or (eq (aref designation 0) 'ascii)
+ (dotimes (i 96)
+ (define-key key-translation-map
+ (vector (+ 32 i)) 'encoded-kbd-self-insert-iso2022-7bit)))
+ (if (memq '7-bit flags)
+ t
+ (dotimes (i 96)
+ (define-key key-translation-map
+ (vector (+ 160 i)) 'encoded-kbd-self-insert-iso2022-8bit))
+ 8))))
+
+ ((eq (coding-system-type coding) 4) ; CCL-base
+ (let ((valid-codes (or (coding-system-get coding :valid)
+ '((128 . 255))))
+ elt from to valid)
+ (while valid-codes
+ (setq elt (car valid-codes) valid-codes (cdr valid-codes))
+ (if (consp elt)
+ (setq from (car elt) to (cdr elt))
+ (setq from (setq to elt)))
+ (while (<= from to)
+ (if (>= from 128)
+ (define-key key-translation-map
+ (vector from) 'encoded-kbd-self-insert-ccl))
+ (setq from (1+ from))))
+ 8))
+
+ ((eq (coding-system-type coding) 'utf-8)
+ (let ((i #xC0))
+ (while (< i 256)
+ (define-key key-translation-map
+ (vector i) 'encoded-kbd-self-insert-utf-8)
+ (setq i (1+ i))))
+ 8)
+
+ (t
+ nil)))
+
+;; key-translation-map at the time Encoded-kbd mode is turned on is
+;; saved here.
+(defvar saved-key-translation-map nil)
+
+;; Input mode at the time Encoded-kbd mode is turned on is saved here.
+(defvar saved-input-mode nil)
+
+(put 'encoded-kbd-mode 'permanent-local t)
+;;;###autoload
+(define-minor-mode encoded-kbd-mode
+ "Toggle Encoded-kbd minor mode.
+With arg, turn Encoded-kbd mode on if and only if arg is positive.
+
+You should not turn this mode on manually, instead use the command
+\\[set-keyboard-coding-system] which turns on or off this mode
+automatically.
+
+In Encoded-kbd mode, a text sent from keyboard is accepted
+as a multilingual text encoded in a coding system set by
+\\[set-keyboard-coding-system]."
+ :global t :group 'keyboard :group 'mule
+
+ (if encoded-kbd-mode
+ ;; We are turning on Encoded-kbd mode.
+ (let ((coding (keyboard-coding-system))
+ result)
+ (or saved-key-translation-map
+ (if (keymapp key-translation-map)
+ (setq saved-key-translation-map
+ (copy-keymap key-translation-map))
+ (setq key-translation-map (make-sparse-keymap))))
+ (or saved-input-mode
+ (setq saved-input-mode
+ (current-input-mode)))
+ (setq result (and coding (encoded-kbd-setup-keymap coding)))
+ (if result
+ (if (eq result 8)
+ (set-input-mode
+ (nth 0 saved-input-mode)
+ (nth 1 saved-input-mode)
+ 'use-8th-bit
+ (nth 3 saved-input-mode)))
+ (setq encoded-kbd-mode nil
+ saved-key-translation-map nil
+ saved-input-mode nil)
+ (error "Unsupported coding system in Encoded-kbd mode: %S"
+ coding)))
+
+ ;; We are turning off Encoded-kbd mode.
+ (setq key-translation-map saved-key-translation-map
+ saved-key-translation-map nil)
+ (apply 'set-input-mode saved-input-mode)
+ (setq saved-input-mode nil)))
+
+(provide 'encoded-kb)
+
+;;; arch-tag: 76f0f9b3-65e7-45c3-b692-59509a87ad44
+;;; encoded-kb.el ends here
HCoop / bpt / emacs.git / blobdiff