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-for-read *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-file-contents-as-raw-text (filename
167 &optional visit beg end replace)
168 "Like `insert-file-contents', q.v., but don't code and format conversion.
169 Like `insert-file-contents-literary', but it allows find-file-hooks,
170 automatic uncompression, etc.
171 Like `insert-file-contents-as-binary', but it converts line-break
175 (narrow-to-region (point)(point))
176 (insert-file-contents-as-binary filename visit beg end replace)
177 (goto-char (point-min))
178 (while (re-search-forward "\r$" nil t)
182 (defun insert-binary-file-contents-literally (filename
183 &optional visit beg end replace)
184 "Like `insert-file-contents-literally', q.v., but don't code conversion.
185 A buffer may be modified in several ways after reading into the buffer due
186 to advanced Emacs features, such as file-name-handlers, format decoding,
187 find-file-hooks, etc.
188 This function ensures that none of these modifications will take place."
190 (file-coding-system *noconv*))
191 (insert-file-contents-literally filename visit beg end replace)
194 (if running-emacs-19_29-or-later
195 ;; for MULE 2.3 based on Emacs 19.34.
196 (defun write-region-as-binary (start end filename
197 &optional append visit lockname)
198 "Like `write-region', q.v., but don't code conversion."
200 (file-coding-system *noconv*))
201 (write-region start end filename append visit lockname)
203 ;; for MULE 2.3 based on Emacs 19.28.
204 (defun write-region-as-binary (start end filename
205 &optional append visit lockname)
206 "Like `write-region', q.v., but don't code conversion."
208 (file-coding-system *noconv*))
209 (write-region start end filename append visit)
213 (defun write-region-as-raw-text-CRLF (start end filename
214 &optional append visit lockname)
215 "Like `write-region', q.v., but don't code conversion."
216 (let ((the-buf (current-buffer)))
218 (insert-buffer-substring the-buf start end)
219 (goto-char (point-min))
220 (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
221 (replace-match "\\1\r\n")
223 (write-region-as-binary (point-min)(point-max)
224 filename append visit lockname)
231 (defun encode-mime-charset-region (start end charset)
232 "Encode the text between START and END as MIME CHARSET."
233 (let ((cs (mime-charset-to-coding-system charset)))
235 (code-convert start end *internal* cs)
238 (defun decode-mime-charset-region (start end charset &optional lbt)
239 "Decode the text between START and END as MIME CHARSET."
240 (let ((cs (mime-charset-to-coding-system charset lbt)))
242 (code-convert start end cs *internal*)
245 (defun encode-mime-charset-string (string charset)
246 "Encode the STRING as MIME CHARSET."
247 (let ((cs (mime-charset-to-coding-system charset)))
249 (code-convert-string string *internal* cs)
252 (defun decode-mime-charset-string (string charset &optional lbt)
253 "Decode the STRING which is encoded in MIME CHARSET."
254 (let ((cs (mime-charset-to-coding-system charset lbt)))
256 (decode-coding-string string cs)
259 (defun write-region-as-mime-charset (charset start end filename)
260 "Like `write-region', q.v., but code-convert by MIME CHARSET."
261 (let ((file-coding-system
262 (or (mime-charset-to-coding-system charset)
264 (write-region start end filename append visit)
268 ;;; @@ to coding-system
271 (defvar mime-charset-coding-system-alist
272 '((iso-8859-1 . *ctext*)
274 (gb2312 . *euc-china*)
276 (iso-2022-jp-2 . *iso-2022-ss2-7*)
277 (x-iso-2022-jp-2 . *iso-2022-ss2-7*)
279 (x-shiftjis . *sjis*)
282 (defun mime-charset-to-coding-system (charset &optional lbt)
283 (if (stringp charset)
284 (setq charset (intern (downcase charset)))
287 (or (cdr (assq charset mime-charset-coding-system-alist))
288 (let ((cs (intern (concat "*" (symbol-name charset) "*"))))
289 (and (coding-system-p cs) cs)
294 (intern (format "%s%s" cs (cond ((eq lbt 'CRLF) 'dos)
304 (defvar charsets-mime-charset-alist
306 '(((lc-ascii) . us-ascii)
307 ((lc-ascii lc-ltn1) . iso-8859-1)
308 ((lc-ascii lc-ltn2) . iso-8859-2)
309 ((lc-ascii lc-ltn3) . iso-8859-3)
310 ((lc-ascii lc-ltn4) . iso-8859-4)
311 ;;; ((lc-ascii lc-crl) . iso-8859-5)
312 ((lc-ascii lc-crl) . koi8-r)
313 ((lc-ascii lc-arb) . iso-8859-6)
314 ((lc-ascii lc-grk) . iso-8859-7)
315 ((lc-ascii lc-hbw) . iso-8859-8)
316 ((lc-ascii lc-ltn5) . iso-8859-9)
317 ((lc-ascii lc-roman lc-jpold lc-jp) . iso-2022-jp)
318 ((lc-ascii lc-kr) . euc-kr)
319 ((lc-ascii lc-cn) . gb2312)
320 ((lc-ascii lc-big5-1 lc-big5-2) . big5)
321 ((lc-ascii lc-roman lc-ltn1 lc-grk
322 lc-jpold lc-cn lc-jp lc-kr
323 lc-jp2) . iso-2022-jp-2)
324 ((lc-ascii lc-roman lc-ltn1 lc-grk
325 lc-jpold lc-cn lc-jp lc-kr lc-jp2
326 lc-cns1 lc-cns2) . iso-2022-int-1)
328 lc-ltn1 lc-ltn2 lc-crl lc-grk
329 lc-jpold lc-cn lc-jp lc-kr lc-jp2
330 lc-cns1 lc-cns2 lc-cns3 lc-cns4
331 lc-cns5 lc-cns6 lc-cns7) . iso-2022-int-1)
336 (let ((pair (car alist)))
340 (cons (mapcar (function
344 (throw 'not-found nil)
348 (setq alist (cdr alist)))
351 (defvar default-mime-charset 'x-ctext
352 "Default value of MIME-charset.
353 It is used when MIME-charset is not specified.
356 (defun detect-mime-charset-region (start end)
357 "Return MIME charset for region between START and END."
358 (charsets-to-mime-charset
359 (cons lc-ascii (find-charset-region start end))))
362 ;;; @ buffer representation
365 (defsubst-maybe set-buffer-multibyte (flag)
366 "Set the multibyte flag of the current buffer to FLAG.
367 If FLAG is t, this makes the buffer a multibyte buffer.
368 If FLAG is nil, this makes the buffer a single-byte buffer.
369 The buffer contents remain unchanged as a sequence of bytes
370 but the contents viewed as characters do change.
371 \[Emacs 20.3 emulating function]"
379 (defalias 'char-charset 'char-leading-char)
381 (defun split-char (character)
382 "Return list of charset and one or two position-codes of CHARACTER."
383 (let ((p (1- (char-bytes character)))
386 (setq dest (cons (- (char-component character p) 128) dest)
389 (cons (char-charset character) dest)
392 (defmacro char-next-index (char index)
393 "Return index of character succeeding CHAR whose index is INDEX."
394 (` (+ (, index) (char-bytes (, char)))))
396 ;;; @@ obsoleted aliases
398 ;;; You should not use them.
400 (defalias 'char-length 'char-bytes)
401 ;;(defalias 'char-columns 'char-width)
407 (defalias 'string-columns 'string-width)
409 (defalias 'string-to-int-list 'string-to-char-list)
411 (or (fboundp 'truncate-string)
412 ;;; Imported from Mule-2.3
413 (defun truncate-string (str width &optional start-column)
414 "Truncate STR to fit in WIDTH columns.
415 Optional non-nil arg START-COLUMN specifies the starting column.
416 \[emu-mule.el; Mule 2.3 emulating function]"
418 (setq start-column 0))
419 (let ((max-width (string-width str))
424 (if (>= width max-width)
425 (setq width max-width))
426 (if (>= start-column width)
428 (while (< column start-column)
429 (setq ch (aref str from)
430 column (+ column (char-width ch))
431 from (+ from (char-bytes ch))))
432 (if (< width max-width)
435 (while (<= column width)
436 (setq ch (aref str to)
437 column (+ column (char-width ch))
439 to (+ to (char-bytes ch))))
441 (substring str from to))))
445 (defalias 'looking-at-as-unibyte 'looking-at)
451 (defun regulate-latin-char (chr)
452 (cond ((and (<= ?
\e$B#A
\e(B chr)(<= chr ?
\e$B#Z
\e(B))
453 (+ (- chr ?
\e$B#A
\e(B) ?A)
455 ((and (<= ?
\e$B#a
\e(B chr)(<= chr ?
\e$B#z
\e(B))
456 (+ (- chr ?
\e$B#a
\e(B) ?a)
458 ((eq chr ?
\e$B!%
\e(B) ?.)
459 ((eq chr ?
\e$B!$
\e(B) ?,)
463 (defun regulate-latin-string (str)
464 (let ((len (length str))
468 (setq chr (sref str i))
469 (setq dest (concat dest
470 (char-to-string (regulate-latin-char chr))))
471 (setq i (+ i (char-bytes chr)))
481 ;;; emu-mule.el ends here