1 ;;; emu-mule.el --- emu module for Mule 1.* and Mule 2.*
3 ;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Katsumi Yamaoka <yamaoka@jpl.org>
7 ;; Keywords: emulation, compatibility, Mule
9 ;; This file is part of emu.
11 ;; This program is free software; you can redistribute it and/or
12 ;; modify it under the terms of the GNU General Public License as
13 ;; published by the Free Software Foundation; either version 2, or (at
14 ;; your option) any later version.
16 ;; This program is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
28 ;;; @ version specific features
31 (cond (running-emacs-19
34 ;; Suggested by SASAKI Osamu <osamu@shuugr.bekkoame.or.jp>
35 ;; (cf. [os2-emacs-ja:78])
36 (defun fontset-pixel-size (fontset)
37 (let* ((font (get-font-info
38 (aref (cdr (get-fontset-info fontset)) 0)))
43 (let ((pat (aref font 1)))
44 (if (string-match "-[0-9]+-" pat)
47 pat (1+ (match-beginning 0)) (1- (match-end 0))))
53 (defun make-overlay (beg end &optional buffer type))
54 (defun overlay-put (overlay prop value))
61 (defalias 'make-char 'make-character)
63 (defalias 'find-non-ascii-charset-string 'find-charset-string)
64 (defalias 'find-non-ascii-charset-region 'find-charset-region)
66 (defalias 'charset-bytes 'char-bytes)
67 (defalias 'charset-description 'char-description)
68 (defalias 'charset-registry 'char-registry)
69 (defalias 'charset-columns 'char-width)
70 (defalias 'charset-direction 'char-direction)
72 (defun charset-chars (charset)
73 "Return the number of characters per dimension of CHARSET."
74 (if (= (logand (nth 2 (character-set charset)) 1) 1)
82 (defun encode-coding-region (start end coding-system)
83 "Encode the text between START and END to CODING-SYSTEM.
84 \[EMACS 20 emulating function]"
85 (code-convert-region start end *internal* coding-system)
88 (defun decode-coding-region (start end coding-system)
89 "Decode the text between START and END which is encoded in CODING-SYSTEM.
90 \[EMACS 20 emulating function]"
91 (code-convert-region start end coding-system *internal*)
94 (defun encode-coding-string (str coding-system)
95 "Encode the STRING to CODING-SYSTEM.
96 \[EMACS 20 emulating function]"
97 (code-convert-string str *internal* coding-system)
100 (defun decode-coding-string (str coding-system)
101 "Decode the string STR which is encoded in CODING-SYSTEM.
102 \[EMACS 20 emulating function]"
103 (let ((len (length str))
109 (code-convert-string (substring str 0 len)
110 coding-system *internal*))
114 (concat ret (substring str len))
117 (defalias 'detect-coding-region 'code-detect-region)
119 (defalias 'set-buffer-file-coding-system 'set-file-coding-system)
121 (defmacro as-binary-process (&rest body)
122 (` (let (selective-display ; Disable ^M to nl translation.
125 (default-process-coding-system (cons *noconv* *noconv*))
126 program-coding-system-alist)
130 (defmacro as-binary-input-file (&rest body)
132 (file-coding-system-for-read *noconv*)
137 (defmacro as-binary-output-file (&rest body)
139 (file-coding-system *noconv*)
144 (defalias 'set-process-input-coding-system 'set-process-coding-system)
150 (defun insert-file-contents-as-binary (filename
151 &optional visit beg end replace)
152 "Like `insert-file-contents', q.v., but don't code and format conversion.
153 Like `insert-file-contents-literary', but it allows find-file-hooks,
154 automatic uncompression, etc.
156 Namely this function ensures that only format decoding and character
157 code conversion will not take place."
159 (file-coding-system *noconv*))
160 (insert-file-contents filename visit beg end replace)
163 (defalias 'insert-binary-file-contents 'insert-file-contents-as-binary)
164 (make-obsolete 'insert-binary-file-contents 'insert-file-contents-as-binary)
166 (defun insert-binary-file-contents-literally (filename
167 &optional visit beg end replace)
168 "Like `insert-file-contents-literally', q.v., but don't code conversion.
169 A buffer may be modified in several ways after reading into the buffer due
170 to advanced Emacs features, such as file-name-handlers, format decoding,
171 find-file-hooks, etc.
172 This function ensures that none of these modifications will take place."
174 (file-coding-system *noconv*))
175 (insert-file-contents-literally filename visit beg end replace)
178 (if running-emacs-19_29-or-later
179 ;; for MULE 2.3 based on Emacs 19.34.
180 (defun write-region-as-binary (start end filename
181 &optional append visit lockname)
182 "Like `write-region', q.v., but don't code conversion."
184 (file-coding-system *noconv*))
185 (write-region start end filename append visit lockname)
187 ;; for MULE 2.3 based on Emacs 19.28.
188 (defun write-region-as-binary (start end filename
189 &optional append visit lockname)
190 "Like `write-region', q.v., but don't code conversion."
192 (file-coding-system *noconv*))
193 (write-region start end filename append visit)
201 (defun encode-mime-charset-region (start end charset)
202 "Encode the text between START and END as MIME CHARSET."
203 (let ((cs (mime-charset-to-coding-system charset)))
205 (code-convert start end *internal* cs)
208 (defun decode-mime-charset-region (start end charset)
209 "Decode the text between START and END as MIME CHARSET."
210 (let ((cs (mime-charset-to-coding-system charset)))
212 (code-convert start end cs *internal*)
215 (defun encode-mime-charset-string (string charset)
216 "Encode the STRING as MIME CHARSET."
217 (let ((cs (mime-charset-to-coding-system charset)))
219 (code-convert-string string *internal* cs)
222 (defun decode-mime-charset-string (string charset)
223 "Decode the STRING which is encoded in MIME CHARSET."
224 (let ((cs (mime-charset-to-coding-system charset)))
226 (decode-coding-string string cs)
229 (defun write-region-as-mime-charset (charset start end filename)
230 "Like `write-region', q.v., but code-convert by MIME CHARSET."
231 (let ((file-coding-system
232 (or (mime-charset-to-coding-system charset)
234 (write-region start end filename append visit)
238 ;;; @@ to coding-system
241 (defvar mime-charset-coding-system-alist
242 '((iso-8859-1 . *ctext*)
244 (gb2312 . *euc-china*)
246 (iso-2022-jp-2 . *iso-2022-ss2-7*)
247 (x-iso-2022-jp-2 . *iso-2022-ss2-7*)
249 (x-shiftjis . *sjis*)
252 (defun mime-charset-to-coding-system (charset &optional lbt)
253 (if (stringp charset)
254 (setq charset (intern (downcase charset)))
257 (or (cdr (assq charset mime-charset-coding-system-alist))
258 (let ((cs (intern (concat "*" (symbol-name charset) "*"))))
259 (and (coding-system-p cs) cs)
264 (intern (concat (symbol-name cs) (symbol-name lbt)))
271 (defvar charsets-mime-charset-alist
273 '(((lc-ascii) . us-ascii)
274 ((lc-ascii lc-ltn1) . iso-8859-1)
275 ((lc-ascii lc-ltn2) . iso-8859-2)
276 ((lc-ascii lc-ltn3) . iso-8859-3)
277 ((lc-ascii lc-ltn4) . iso-8859-4)
278 ;;; ((lc-ascii lc-crl) . iso-8859-5)
279 ((lc-ascii lc-crl) . koi8-r)
280 ((lc-ascii lc-arb) . iso-8859-6)
281 ((lc-ascii lc-grk) . iso-8859-7)
282 ((lc-ascii lc-hbw) . iso-8859-8)
283 ((lc-ascii lc-ltn5) . iso-8859-9)
284 ((lc-ascii lc-roman lc-jpold lc-jp) . iso-2022-jp)
285 ((lc-ascii lc-kr) . euc-kr)
286 ((lc-ascii lc-cn) . gb2312)
287 ((lc-ascii lc-big5-1 lc-big5-2) . big5)
288 ((lc-ascii lc-roman lc-ltn1 lc-grk
289 lc-jpold lc-cn lc-jp lc-kr
290 lc-jp2) . iso-2022-jp-2)
291 ((lc-ascii lc-roman lc-ltn1 lc-grk
292 lc-jpold lc-cn lc-jp lc-kr lc-jp2
293 lc-cns1 lc-cns2) . iso-2022-int-1)
295 lc-ltn1 lc-ltn2 lc-crl lc-grk
296 lc-jpold lc-cn lc-jp lc-kr lc-jp2
297 lc-cns1 lc-cns2 lc-cns3 lc-cns4
298 lc-cns5 lc-cns6 lc-cns7) . iso-2022-int-1)
303 (let ((pair (car alist)))
307 (cons (mapcar (function
311 (throw 'not-found nil)
315 (setq alist (cdr alist)))
318 (defvar default-mime-charset 'x-ctext
319 "Default value of MIME-charset.
320 It is used when MIME-charset is not specified.
323 (defun detect-mime-charset-region (start end)
324 "Return MIME charset for region between START and END."
325 (charsets-to-mime-charset
326 (cons lc-ascii (find-charset-region start end))))
332 (defalias 'char-charset 'char-leading-char)
334 (defmacro char-next-index (char index)
335 "Return index of character succeeding CHAR whose index is INDEX."
336 (` (+ (, index) (char-bytes (, char)))))
338 ;;; @@ obsoleted aliases
340 ;;; You should not use them.
342 (defalias 'char-length 'char-bytes)
343 ;;(defalias 'char-columns 'char-width)
349 (defalias 'string-columns 'string-width)
351 (defalias 'string-to-int-list 'string-to-char-list)
353 (or (fboundp 'truncate-string)
354 ;;; Imported from Mule-2.3
355 (defun truncate-string (str width &optional start-column)
356 "Truncate STR to fit in WIDTH columns.
357 Optional non-nil arg START-COLUMN specifies the starting column.
358 \[emu-mule.el; Mule 2.3 emulating function]"
360 (setq start-column 0))
361 (let ((max-width (string-width str))
366 (if (>= width max-width)
367 (setq width max-width))
368 (if (>= start-column width)
370 (while (< column start-column)
371 (setq ch (aref str from)
372 column (+ column (char-width ch))
373 from (+ from (char-bytes ch))))
374 (if (< width max-width)
377 (while (<= column width)
378 (setq ch (aref str to)
379 column (+ column (char-width ch))
381 to (+ to (char-bytes ch))))
383 (substring str from to))))
387 (defalias 'looking-at-as-unibyte 'looking-at)
393 (defun regulate-latin-char (chr)
394 (cond ((and (<= ?
\e$B#A
\e(B chr)(<= chr ?
\e$B#Z
\e(B))
395 (+ (- chr ?
\e$B#A
\e(B) ?A)
397 ((and (<= ?
\e$B#a
\e(B chr)(<= chr ?
\e$B#z
\e(B))
398 (+ (- chr ?
\e$B#a
\e(B) ?a)
400 ((eq chr ?
\e$B!%
\e(B) ?.)
401 ((eq chr ?
\e$B!$
\e(B) ?,)
405 (defun regulate-latin-string (str)
406 (let ((len (length str))
410 (setq chr (sref str i))
411 (setq dest (concat dest
412 (char-to-string (regulate-latin-char chr))))
413 (setq i (+ i (char-bytes chr)))
423 ;;; emu-mule.el ends here