1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
|
;;; encoded-kb.el --- handler to input multibyte characters encoded somehow
;; Copyright (C) 1997, 2001, 2002, 2003, 2004, 2005, 2006, 2007
;; Free Software Foundation, Inc.
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H14PRO021
;; 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 3 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 (car (aref (coding-system-spec (keyboard-coding-system)) 4)))
(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))))
(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) 1) ; SJIS
(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) 3) ; Big5
(let ((i 161))
(while (< i 255)
(define-key key-translation-map
(vector i) 'encoded-kbd-self-insert-big5)
(setq i (1+ i))))
8)
((eq (coding-system-type coding) 2) ; ISO-2022
(let ((flags (coding-system-flags coding))
use-designation)
(if (aref flags 8)
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 flags i)
(if (charsetp (aref flags i))
(aset encoded-kbd-iso2022-designations
i (aref flags i))
(setq use-designation t)
(if (charsetp (car-safe (aref flags i)))
(aset encoded-kbd-iso2022-designations
i (car (aref flags i)))))))
(aset encoded-kbd-iso2022-invocations 0 0)
(if (aref encoded-kbd-iso2022-designations 1)
(aset encoded-kbd-iso2022-invocations 1 1))
(when use-designation
(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 flags 2) (aref flags 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 flags 0) 'ascii)
(dotimes (i 96)
(define-key key-translation-map
(vector (+ 32 i)) 'encoded-kbd-self-insert-iso2022-7bit)))
(if (aref flags 7)
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-codes)
'((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))
(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
|
