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07513d64 | 1 | ;;; mule.el --- basic commands for multilingual environment |
4ed46869 | 2 | |
e3fe4da0 | 3 | ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
2fd125a3 | 4 | ;; Free Software Foundation, Inc. |
7976eda0 | 5 | ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
e3fe4da0 | 6 | ;; 2005, 2006, 2007, 2008 |
2fd125a3 KH |
7 | ;; National Institute of Advanced Industrial Science and Technology (AIST) |
8 | ;; Registration Number H14PRO021 | |
8f924df7 | 9 | ;; Copyright (C) 2003 |
c1841772 KH |
10 | ;; National Institute of Advanced Industrial Science and Technology (AIST) |
11 | ;; Registration Number H13PRO009 | |
4ed46869 KH |
12 | |
13 | ;; Keywords: mule, multilingual, character set, coding system | |
14 | ||
15 | ;; This file is part of GNU Emacs. | |
16 | ||
17 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
18 | ;; it under the terms of the GNU General Public License as published by | |
d7142f3e | 19 | ;; the Free Software Foundation; either version 3, or (at your option) |
4ed46869 KH |
20 | ;; any later version. |
21 | ||
22 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
23 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | ;; GNU General Public License for more details. | |
26 | ||
27 | ;; You should have received a copy of the GNU General Public License | |
369314dc | 28 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
3a35cf56 LK |
29 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
30 | ;; Boston, MA 02110-1301, USA. | |
4ed46869 | 31 | |
60370d40 PJ |
32 | ;;; Commentary: |
33 | ||
4ed46869 KH |
34 | ;;; Code: |
35 | ||
8f924df7 | 36 | (defconst mule-version "6.0 (HANACHIRUSATO)" "\ |
4ed46869 KH |
37 | Version number and name of this version of MULE (multilingual environment).") |
38 | ||
8f924df7 | 39 | (defconst mule-version-date "2003.9.1" "\ |
4ed46869 KH |
40 | Distribution date of this version of MULE (multilingual environment).") |
41 | ||
c1841772 KH |
42 | \f |
43 | ;;; CHARSET | |
44 | ||
6d2b6635 KH |
45 | ;; Backward compatibility code for handling emacs-mule charsets. |
46 | (defvar private-char-area-1-min #xF0000) | |
47 | (defvar private-char-area-1-max #xFFFFE) | |
48 | (defvar private-char-area-2-min #x100000) | |
49 | (defvar private-char-area-2-max #x10FFFE) | |
50 | ||
51 | ;; Table of emacs-mule charsets indexed by their emacs-mule ID. | |
52 | (defvar emacs-mule-charset-table (make-vector 256 nil)) | |
53 | (aset emacs-mule-charset-table 0 'ascii) | |
54 | ||
55 | ;; Convert the argument of old-style calll of define-charset to a | |
56 | ;; property list used by the new-style. | |
57 | ;; INFO-VECTOR is a vector of the format: | |
58 | ;; [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE | |
59 | ;; SHORT-NAME LONG-NAME DESCRIPTION] | |
60 | ||
61 | (defun convert-define-charset-argument (emacs-mule-id info-vector) | |
62 | (let* ((dim (aref info-vector 0)) | |
63 | (chars (aref info-vector 1)) | |
64 | (total (if (= dim 1) chars (* chars chars))) | |
65 | (code-space (if (= dim 1) (if (= chars 96) [32 127] [33 126]) | |
66 | (if (= chars 96) [32 127 32 127] [33 126 33 126]))) | |
67 | code-offset) | |
68 | (if (integerp emacs-mule-id) | |
69 | (or (= emacs-mule-id 0) | |
70 | (and (>= emacs-mule-id 129) (< emacs-mule-id 256)) | |
71 | (error "Invalid CHARSET-ID: %d" emacs-mule-id)) | |
72 | (let (from-id to-id) | |
73 | (if (= dim 1) (setq from-id 160 to-id 224) | |
74 | (setq from-id 224 to-id 255)) | |
75 | (while (and (< from-id to-id) | |
76 | (not (aref emacs-mule-charset-table from-id))) | |
77 | (setq from-id (1+ from-id))) | |
78 | (if (= from-id to-id) | |
79 | (error "No more room for the new Emacs-mule charset")) | |
80 | (setq emacs-mule-id from-id))) | |
81 | (if (> (- private-char-area-1-max private-char-area-1-min) total) | |
82 | (setq code-offset private-char-area-1-min | |
83 | private-char-area-1-min (+ private-char-area-1-min total)) | |
84 | (if (> (- private-char-area-2-max private-char-area-2-min) total) | |
85 | (setq code-offset private-char-area-2-min | |
86 | private-char-area-2-min (+ private-char-area-2-min total)) | |
87 | (error "No more space for a new charset."))) | |
88 | (list :dimension dim | |
89 | :code-space code-space | |
90 | :iso-final-char (aref info-vector 4) | |
91 | :code-offset code-offset | |
92 | :emacs-mule-id emacs-mule-id))) | |
93 | ||
c1841772 KH |
94 | (defun define-charset (name docstring &rest props) |
95 | "Define NAME (symbol) as a charset with DOCSTRING. | |
96 | The remaining arguments must come in pairs ATTRIBUTE VALUE. ATTRIBUTE | |
07513d64 | 97 | may be any symbol. The following have special meanings, and one of |
bec25acc | 98 | `:code-offset', `:map', `:subset', `:superset' must be specified. |
c1841772 KH |
99 | |
100 | `:short-name' | |
101 | ||
102 | VALUE must be a short string to identify the charset. If omitted, | |
103 | NAME is used. | |
104 | ||
105 | `:long-name' | |
106 | ||
107 | VALUE must be a string longer than `:short-name' to identify the | |
07513d64 | 108 | charset. If omitted, the value of the `:short-name' attribute is used. |
c1841772 KH |
109 | |
110 | `:dimension' | |
111 | ||
112 | VALUE must be an integer 0, 1, 2, or 3, specifying the dimension of | |
07513d64 DL |
113 | code-points of the charsets. If omitted, it is calculated from the |
114 | value of the `:code-space' attribute. | |
c1841772 KH |
115 | |
116 | `:code-space' | |
117 | ||
118 | VALUE must be a vector of length at most 8 specifying the byte code | |
119 | range of each dimension in this format: | |
120 | [ MIN-1 MAX-1 MIN-2 MAX-2 ... ] | |
07513d64 | 121 | where MIN-N is the minimum byte value of Nth dimension of code-point, |
c1841772 KH |
122 | MAX-N is the maximum byte value of that. |
123 | ||
b1a79461 KH |
124 | `:min-code' |
125 | ||
126 | VALUE must be an integer specifying the mininum code point of the | |
127 | charset. If omitted, it is calculated from `:code-space'. VALUE may | |
128 | be a cons (HIGH . LOW), where HIGH is the most significant 16 bits of | |
129 | the code point and LOW is the least significant 16 bits. | |
130 | ||
1f32125f | 131 | `:max-code' |
b1a79461 KH |
132 | |
133 | VALUE must be an integer specifying the maxinum code point of the | |
134 | charset. If omitted, it is calculated from `:code-space'. VALUE may | |
135 | be a cons (HIGH . LOW), where HIGH is the most significant 16 bits of | |
136 | the code point and LOW is the least significant 16 bits. | |
137 | ||
c1841772 KH |
138 | `:iso-final-char' |
139 | ||
140 | VALUE must be a character in the range 32 to 127 (inclusive) | |
141 | specifying the final char of the charset for ISO-2022 encoding. If | |
142 | omitted, the charset can't be encoded by ISO-2022 based | |
143 | coding-systems. | |
144 | ||
145 | `:iso-revision-number' | |
146 | ||
147 | VALUE must be an integer in the range 0..63, specifying the revision | |
148 | number of the charset for ISO-2022 encoding. | |
149 | ||
150 | `:emacs-mule-id' | |
151 | ||
6d2b6635 | 152 | VALUE must be an integer of 0, 129..255. If omitted, the charset |
c1841772 KH |
153 | can't be encoded by coding-systems of type `emacs-mule'. |
154 | ||
155 | `:ascii-compatible-p' | |
156 | ||
07513d64 DL |
157 | VALUE must be nil or t (default nil). If VALUE is t, the charset is |
158 | compatible with ASCII, i.e. the first 128 code points map to ASCII. | |
c1841772 KH |
159 | |
160 | `:supplementary-p' | |
161 | ||
162 | VALUE must be nil or t. If the VALUE is t, the charset is | |
1376eeae KH |
163 | supplementary, which means it is used only as a parent or a |
164 | subset of some other charset, or it is provided just for backward | |
165 | compatibility. | |
c1841772 KH |
166 | |
167 | `:invalid-code' | |
168 | ||
169 | VALUE must be a nonnegative integer that can be used as an invalid | |
170 | code point of the charset. If the minimum code is 0 and the maximum | |
171 | code is greater than Emacs' maximum integer value, `:invalid-code' | |
172 | should not be omitted. | |
173 | ||
174 | `:code-offset' | |
175 | ||
07513d64 DL |
176 | VALUE must be an integer added to the index number of a character to |
177 | get the corresponding character code. | |
c1841772 KH |
178 | |
179 | `:map' | |
180 | ||
181 | VALUE must be vector or string. | |
182 | ||
183 | If it is a vector, the format is [ CODE-1 CHAR-1 CODE-2 CHAR-2 ... ], | |
184 | where CODE-n is a code-point of the charset, and CHAR-n is the | |
07513d64 | 185 | corresponding character code. |
c1841772 KH |
186 | |
187 | If it is a string, it is a name of file that contains the above | |
3e4abc9e KH |
188 | information. Each line of the file must be this format: |
189 | 0xXXX 0xYYY | |
190 | where XXX is a hexadecimal representation of CODE-n and YYY is a | |
191 | hexadecimal representation of CHAR-n. A line starting with `#' is a | |
192 | comment line. | |
c1841772 | 193 | |
2c2a254f KH |
194 | `:subset' |
195 | ||
196 | VALUE must be a list: | |
197 | ( PARENT MIN-CODE MAX-CODE OFFSET ) | |
198 | PARENT is a parent charset. MIN-CODE and MAX-CODE specify the range | |
199 | of characters inherited from the parent. OFFSET is an integer value | |
200 | to add to a code point of the parent charset to get the corresponding | |
201 | code point of this charset. | |
202 | ||
203 | `:superset' | |
c1841772 KH |
204 | |
205 | VALUE must be a list of parent charsets. The charset inherits | |
206 | characters from them. Each element of the list may be a cons (PARENT | |
207 | . OFFSET), where PARENT is a parent charset, and OFFSET is an offset | |
2c2a254f KH |
208 | value to add to a code point of PARENT to get the corresponding code |
209 | point of this charset. | |
c1841772 KH |
210 | |
211 | `:unify-map' | |
212 | ||
213 | VALUE must be vector or string. | |
214 | ||
215 | If it is a vector, the format is [ CODE-1 CHAR-1 CODE-2 CHAR-2 ... ], | |
216 | where CODE-n is a code-point of the charset, and CHAR-n is the | |
07513d64 | 217 | corresponding Unicode character code. |
c1841772 KH |
218 | |
219 | If it is a string, it is a name of file that contains the above | |
3e4abc9e KH |
220 | information. The file format is the same as what described for `:map' |
221 | attribute." | |
6d2b6635 KH |
222 | (when (vectorp (car props)) |
223 | ;; Old style code: | |
224 | ;; (define-charset CHARSET-ID CHARSET-SYMBOL INFO-VECTOR) | |
225 | ;; Convert the argument to make it fit with the current style. | |
226 | (let ((vec (car props))) | |
227 | (setq props (convert-define-charset-argument name vec) | |
228 | name docstring | |
229 | docstring (aref vec 8)))) | |
c1841772 KH |
230 | (let ((attrs (mapcar 'list '(:dimension |
231 | :code-space | |
b1a79461 KH |
232 | :min-code |
233 | :max-code | |
c1841772 KH |
234 | :iso-final-char |
235 | :iso-revision-number | |
236 | :emacs-mule-id | |
237 | :ascii-compatible-p | |
238 | :supplementary-p | |
239 | :invalid-code | |
240 | :code-offset | |
241 | :map | |
2c2a254f KH |
242 | :subset |
243 | :superset | |
c1841772 KH |
244 | :unify-map |
245 | :plist)))) | |
246 | ||
247 | ;; If :dimension is omitted, get the dimension from :code-space. | |
248 | (let ((dimension (plist-get props :dimension))) | |
249 | (or dimension | |
c04e918c KH |
250 | (let ((code-space (plist-get props :code-space))) |
251 | (setq dimension (if code-space (/ (length code-space) 2) 4)) | |
c1841772 KH |
252 | (setq props (plist-put props :dimension dimension))))) |
253 | ||
c04e918c KH |
254 | (let ((code-space (plist-get props :code-space))) |
255 | (or code-space | |
256 | (let ((dimension (plist-get props :dimension))) | |
257 | (setq code-space (make-vector 8 0)) | |
258 | (dotimes (i dimension) | |
259 | (aset code-space (1+ (* i 2)) #xFF)) | |
260 | (setq props (plist-put props :code-space code-space))))) | |
261 | ||
6d2b6635 KH |
262 | ;; If :emacs-mule-id is specified, update emacs-mule-charset-table. |
263 | (let ((emacs-mule-id (plist-get props :emacs-mule-id))) | |
264 | (if (integerp emacs-mule-id) | |
265 | (aset emacs-mule-charset-table emacs-mule-id name))) | |
266 | ||
c1841772 KH |
267 | (dolist (slot attrs) |
268 | (setcdr slot (plist-get props (car slot)))) | |
269 | ||
270 | ;; Make sure that the value of :code-space is a vector of 8 | |
271 | ;; elements. | |
272 | (let* ((slot (assq :code-space attrs)) | |
273 | (val (cdr slot)) | |
274 | (len (length val))) | |
275 | (if (< len 8) | |
276 | (setcdr slot | |
277 | (vconcat val (make-vector (- 8 len) 0))))) | |
278 | ||
279 | ;; Add :name and :docstring properties to PROPS. | |
280 | (setq props | |
281 | (cons :name (cons name (cons :docstring (cons docstring props))))) | |
282 | (or (plist-get props :short-name) | |
283 | (plist-put props :short-name (symbol-name name))) | |
284 | (or (plist-get props :long-name) | |
285 | (plist-put props :long-name (plist-get props :short-name))) | |
e1e529fa DL |
286 | ;; We can probably get a worthwhile amount in purespace. |
287 | (setq props | |
288 | (mapcar (lambda (elt) | |
289 | (if (stringp elt) | |
290 | (purecopy elt) | |
291 | elt)) | |
292 | props)) | |
c1841772 KH |
293 | (setcdr (assq :plist attrs) props) |
294 | ||
295 | (apply 'define-charset-internal name (mapcar 'cdr attrs)))) | |
296 | ||
297 | ||
4ed46869 | 298 | (defun load-with-code-conversion (fullname file &optional noerror nomessage) |
0f69cb38 KH |
299 | "Execute a file of Lisp code named FILE whose absolute name is FULLNAME. |
300 | The file contents are decoded before evaluation if necessary. | |
5dd1c041 | 301 | If optional third arg NOERROR is non-nil, |
4ed46869 KH |
302 | report no error if FILE doesn't exist. |
303 | Print messages at start and end of loading unless | |
5dd1c041 | 304 | optional fourth arg NOMESSAGE is non-nil. |
4ed46869 KH |
305 | Return t if file exists." |
306 | (if (null (file-readable-p fullname)) | |
307 | (and (null noerror) | |
308 | (signal 'file-error (list "Cannot open load file" file))) | |
309 | ;; Read file with code conversion, and then eval. | |
310 | (let* ((buffer | |
311 | ;; To avoid any autoloading, set default-major-mode to | |
312 | ;; fundamental-mode. | |
88162676 RS |
313 | ;; So that we don't get completely screwed if the |
314 | ;; file is encoded in some complicated character set, | |
315 | ;; read it with real decoding, as a multibyte buffer, | |
316 | ;; even if this is a --unibyte Emacs session. | |
317 | (let ((default-major-mode 'fundamental-mode) | |
318 | (default-enable-multibyte-characters t)) | |
4ed46869 KH |
319 | ;; We can't use `generate-new-buffer' because files.el |
320 | ;; is not yet loaded. | |
321 | (get-buffer-create (generate-new-buffer-name " *load*")))) | |
db5cae4b SM |
322 | (load-in-progress t) |
323 | (source (save-match-data (string-match "\\.el\\'" fullname)))) | |
324 | (unless nomessage | |
325 | (if source | |
326 | (message "Loading %s (source)..." file) | |
327 | (message "Loading %s..." file))) | |
328 | (when purify-flag | |
4c86cca0 | 329 | (push file preloaded-file-list)) |
4ed46869 | 330 | (unwind-protect |
a6acd8a2 | 331 | (let ((load-file-name fullname) |
1c4cc63a | 332 | (set-auto-coding-for-load t) |
a6acd8a2 | 333 | (inhibit-file-name-operation nil)) |
053f45dd | 334 | (with-current-buffer buffer |
9fe1108c RS |
335 | ;; Don't let deactivate-mark remain set. |
336 | (let (deactivate-mark) | |
337 | (insert-file-contents fullname)) | |
7d276780 EZ |
338 | ;; If the loaded file was inserted with no-conversion or |
339 | ;; raw-text coding system, make the buffer unibyte. | |
340 | ;; Otherwise, eval-buffer might try to interpret random | |
341 | ;; binary junk as multibyte characters. | |
342 | (if (and enable-multibyte-characters | |
8f924df7 KH |
343 | (or (eq (coding-system-type last-coding-system-used) |
344 | 'raw-text))) | |
7d276780 | 345 | (set-buffer-multibyte nil)) |
4ed46869 KH |
346 | ;; Make `kill-buffer' quiet. |
347 | (set-buffer-modified-p nil)) | |
0f69cb38 | 348 | ;; Have the original buffer current while we eval. |
01ae35c1 RS |
349 | (eval-buffer buffer nil |
350 | ;; This is compatible with what `load' does. | |
351 | (if purify-flag file fullname) | |
88162676 RS |
352 | ;; If this Emacs is running with --unibyte, |
353 | ;; convert multibyte strings to unibyte | |
354 | ;; after reading them. | |
ba74e833 | 355 | ;; (not default-enable-multibyte-characters) |
8dd08b5b | 356 | nil t |
ba74e833 | 357 | )) |
cfc70cdf RS |
358 | (let (kill-buffer-hook kill-buffer-query-functions) |
359 | (kill-buffer buffer))) | |
33d74677 AM |
360 | (unless purify-flag |
361 | (do-after-load-evaluation fullname)) | |
5dd1c041 | 362 | |
db5cae4b SM |
363 | (unless (or nomessage noninteractive) |
364 | (if source | |
365 | (message "Loading %s (source)...done" file) | |
366 | (message "Loading %s...done" file))) | |
4ed46869 KH |
367 | t))) |
368 | ||
8f924df7 | 369 | (defun charset-info (charset) |
4ed46869 | 370 | "Return a vector of information of CHARSET. |
8f924df7 | 371 | This function is provided for backward compatibility. |
4ed46869 | 372 | |
4ed46869 KH |
373 | The elements of the vector are: |
374 | CHARSET-ID, BYTES, DIMENSION, CHARS, WIDTH, DIRECTION, | |
375 | LEADING-CODE-BASE, LEADING-CODE-EXT, | |
376 | ISO-FINAL-CHAR, ISO-GRAPHIC-PLANE, | |
377 | REVERSE-CHARSET, SHORT-NAME, LONG-NAME, DESCRIPTION, | |
8f924df7 | 378 | PLIST. |
4ed46869 | 379 | where |
8f924df7 KH |
380 | CHARSET-ID is always 0. |
381 | BYTES is always 0. | |
382 | DIMENSION is the number of bytes of a code-point of the charset: | |
383 | 1, 2, 3, or 4. | |
384 | CHARS is the number of characters in a dimension: | |
385 | 94, 96, 128, or 256. | |
386 | WIDTH is always 0. | |
387 | DIRECTION is always 0. | |
388 | LEADING-CODE-BASE is always 0. | |
389 | LEADING-CODE-EXT is always 0. | |
4ed46869 | 390 | ISO-FINAL-CHAR (character) is the final character of the |
7dd4c92d KH |
391 | corresponding ISO 2022 charset. If the charset is not assigned |
392 | any final character, the value is -1. | |
8f924df7 KH |
393 | ISO-GRAPHIC-PLANE is always 0. |
394 | REVERSE-CHARSET is always -1. | |
4ed46869 KH |
395 | SHORT-NAME (string) is the short name to refer to the charset. |
396 | LONG-NAME (string) is the long name to refer to the charset | |
397 | DESCRIPTION (string) is the description string of the charset. | |
398 | PLIST (property list) may contain any type of information a user | |
399 | want to put and get by functions `put-charset-property' and | |
400 | `get-charset-property' respectively." | |
8f924df7 KH |
401 | (vector 0 |
402 | 0 | |
403 | (charset-dimension charset) | |
404 | (charset-chars charset) | |
405 | 0 | |
406 | 0 | |
407 | 0 | |
408 | 0 | |
409 | (charset-iso-final-char charset) | |
410 | 0 | |
411 | -1 | |
412 | (get-charset-property charset :short-name) | |
413 | (get-charset-property charset :short-name) | |
414 | (charset-description charset) | |
415 | (charset-plist charset))) | |
4ed46869 | 416 | |
40c81f74 PE |
417 | ;; It is better not to use backquote in this file, |
418 | ;; because that makes a bootstrapping problem | |
419 | ;; if you need to recompile all the Lisp files using interpreted code. | |
420 | ||
8f924df7 KH |
421 | (defun charset-id (charset) |
422 | "Always return 0. This is provided for backward compatibility." | |
423 | 0) | |
4ed46869 KH |
424 | |
425 | (defmacro charset-bytes (charset) | |
8f924df7 KH |
426 | "Always return 0. This is provided for backward compatibility." |
427 | 0) | |
c1841772 KH |
428 | |
429 | (defun get-charset-property (charset propname) | |
430 | "Return the value of CHARSET's PROPNAME property. | |
431 | This is the last value stored with | |
432 | (put-charset-property CHARSET PROPNAME VALUE)." | |
433 | (plist-get (charset-plist charset) propname)) | |
434 | ||
435 | (defun put-charset-property (charset propname value) | |
1f32125f | 436 | "Set CHARSETS's PROPNAME property to value VALUE. |
c1841772 KH |
437 | It can be retrieved with `(get-charset-property CHARSET PROPNAME)'." |
438 | (set-charset-plist charset | |
439 | (plist-put (charset-plist charset) propname value))) | |
440 | ||
c1841772 KH |
441 | (defun charset-description (charset) |
442 | "Return description string of CHARSET." | |
443 | (plist-get (charset-plist charset) :docstring)) | |
444 | ||
445 | (defun charset-dimension (charset) | |
12504f57 | 446 | "Return dimension of CHARSET." |
c1841772 KH |
447 | (plist-get (charset-plist charset) :dimension)) |
448 | ||
346a8d64 | 449 | (defun charset-chars (charset &optional dimension) |
12504f57 | 450 | "Return number of characters contained in DIMENSION of CHARSET. |
346a8d64 DL |
451 | DIMENSION defaults to the first dimension." |
452 | (unless dimension (setq dimension 1)) | |
103cc921 | 453 | (let ((code-space (plist-get (charset-plist charset) :code-space))) |
346a8d64 DL |
454 | (1+ (- (aref code-space (1- (* 2 dimension))) |
455 | (aref code-space (- (* 2 dimension) 2)))))) | |
c1841772 KH |
456 | |
457 | (defun charset-iso-final-char (charset) | |
1d839a14 DL |
458 | "Return ISO-2022 final character of CHARSET. |
459 | Return -1 if charset isn't an ISO 2022 one." | |
c1841772 KH |
460 | (or (plist-get (charset-plist charset) :iso-final-char) |
461 | -1)) | |
4ed46869 KH |
462 | |
463 | (defmacro charset-short-name (charset) | |
c1841772 KH |
464 | "Return short name of CHARSET." |
465 | (plist-get (charset-plist charset) :short-name)) | |
4ed46869 KH |
466 | |
467 | (defmacro charset-long-name (charset) | |
c1841772 KH |
468 | "Return long name of CHARSET." |
469 | (plist-get (charset-plist charset) :long-name)) | |
4ed46869 | 470 | |
d3675a42 | 471 | (defun charset-list () |
12504f57 | 472 | "Return list of all charsets ever defined. |
900dc6e3 | 473 | |
d3675a42 | 474 | This function is provided for backward compatibility. |
900dc6e3 | 475 | Now we have the variable `charset-list'." |
d3675a42 | 476 | charset-list) |
8589dc17 | 477 | (make-obsolete 'charset-list "Use variable `charset-list'" "23.1") |
d3675a42 | 478 | |
6d2b6635 KH |
479 | \f |
480 | ;;; CHARACTER | |
481 | (defalias 'char-valid-p 'characterp) | |
8589dc17 | 482 | (make-obsolete 'char-valid-p 'characterp "23.1") |
6d2b6635 | 483 | |
c1841772 | 484 | (defun generic-char-p (char) |
8f924df7 | 485 | "Always return nil. This is provided for backward compatibility." |
c1841772 | 486 | nil) |
8589dc17 | 487 | (make-obsolete 'generic-char-p "Generic characters no longer exist" "23.1") |
6d2b6635 KH |
488 | |
489 | (defun make-char-internal (charset-id &optional code1 code2) | |
490 | (let ((charset (aref emacs-mule-charset-table charset-id))) | |
491 | (or charset | |
492 | (error "Invalid Emacs-mule charset ID: %d" charset-id)) | |
493 | (make-char charset code1 code2))) | |
0269ddfb | 494 | \f |
bd72e34f CY |
495 | ;; Save the ASCII case table in case we need it later. Some locales |
496 | ;; (such as Turkish) modify the case behavior of ASCII characters, | |
497 | ;; which can interfere with networking code that uses ASCII strings. | |
498 | ||
499 | (defvar ascii-case-table | |
500 | ;; Code copied from copy-case-table to avoid requiring case-table.el | |
501 | (let ((tbl (copy-sequence (standard-case-table))) | |
502 | (up (char-table-extra-slot (standard-case-table) 0))) | |
503 | (if up (set-char-table-extra-slot tbl 0 (copy-sequence up))) | |
504 | (set-char-table-extra-slot tbl 1 nil) | |
505 | (set-char-table-extra-slot tbl 2 nil) | |
506 | tbl) | |
507 | "Case table for the ASCII character set.") | |
508 | \f | |
e76938e7 | 509 | ;; Coding system stuff |
4ed46869 | 510 | |
c1841772 KH |
511 | ;; Coding system is a symbol that has been defined by the function |
512 | ;; `define-coding-system'. | |
4ed46869 | 513 | |
c1841772 KH |
514 | (defconst coding-system-iso-2022-flags |
515 | '(long-form | |
516 | ascii-at-eol | |
517 | ascii-at-cntl | |
518 | 7-bit | |
519 | locking-shift | |
520 | single-shift | |
521 | designation | |
522 | revision | |
523 | direction | |
524 | init-at-bol | |
525 | designate-at-bol | |
526 | safe | |
527 | latin-extra | |
528 | composition | |
3ed58a15 KH |
529 | euc-tw-shift |
530 | use-roman | |
531 | use-oldjis) | |
c1841772 | 532 | "List of symbols that control ISO-2022 encoder/decoder. |
4ed46869 | 533 | |
12504f57 | 534 | The value of the `:flags' attribute in the argument of the function |
caa7db3a | 535 | `define-coding-system' must be one of them. |
4ed46869 | 536 | |
c1841772 KH |
537 | If `long-form' is specified, use a long designation sequence on |
538 | encoding for the charsets `japanese-jisx0208-1978', `chinese-gb2312', | |
539 | and `japanese-jisx0208'. The long designation sequence doesn't | |
12504f57 | 540 | conform to ISO 2022, but is used by such coding systems as |
c1841772 KH |
541 | `compound-text'. |
542 | ||
543 | If `ascii-at-eol' is specified, designate ASCII to g0 at end of line | |
544 | on encoding. | |
545 | ||
546 | If `ascii-at-cntl' is specified, designate ASCII to g0 before control | |
547 | codes and SPC on encoding. | |
548 | ||
549 | If `7-bit' is specified, use 7-bit code only on encoding. | |
550 | ||
551 | If `locking-shift' is specified, decode locking-shift code correctly | |
552 | on decoding, and use locking-shift to invoke a graphic element on | |
553 | encoding. | |
554 | ||
555 | If `single-shift' is specified, decode single-shift code correctly on | |
556 | decoding, and use single-shift to invoke a graphic element on encoding. | |
557 | ||
558 | If `designation' is specified, decode designation code correctly on | |
559 | decoding, and use designation to designate a charset to a graphic | |
560 | element on encoding. | |
561 | ||
562 | If `revision' is specified, produce an escape sequence to specify | |
563 | revision number of a charset on encoding. Such an escape sequence is | |
564 | always correctly decoded on decoding. | |
565 | ||
566 | If `direction' is specified, decode ISO6429's code for specifying | |
12504f57 | 567 | direction correctly, and produce the code on encoding. |
c1841772 KH |
568 | |
569 | If `init-at-bol' is specified, on encoding, it is assumed that | |
570 | invocation and designation statuses are reset at each beginning of | |
12504f57 | 571 | line even if `ascii-at-eol' is not specified; thus no codes for |
c1841772 KH |
572 | resetting them are produced. |
573 | ||
574 | If `safe' is specified, on encoding, characters not supported by a | |
575 | coding are replaced with `?'. | |
576 | ||
12504f57 | 577 | If `latin-extra' is specified, the code-detection routine assumes that a |
c1841772 KH |
578 | code specified in `latin-extra-code-table' (which see) is valid. |
579 | ||
580 | If `composition' is specified, an escape sequence to specify | |
12504f57 | 581 | composition sequence is correctly decoded on decoding, and is produced |
c1841772 KH |
582 | on encoding. |
583 | ||
584 | If `euc-tw-shift' is specified, the EUC-TW specific shifting code is | |
12504f57 | 585 | correctly decoded on decoding, and is produced on encoding. |
c1841772 | 586 | |
12504f57 DL |
587 | If `use-roman' is specified, JIS0201-1976-Roman is designated instead |
588 | of ASCII. | |
589 | ||
590 | If `use-oldjis' is specified, JIS0208-1976 is designated instead of | |
591 | JIS0208-1983.") | |
592 | ||
c1841772 | 593 | (defun define-coding-system (name docstring &rest props) |
12504f57 | 594 | "Define NAME (a symbol) as a coding system with DOCSTRING and attributes. |
c1841772 KH |
595 | The remaining arguments must come in pairs ATTRIBUTE VALUE. ATTRIBUTE |
596 | may be any symbol. | |
597 | ||
12504f57 DL |
598 | The following attributes have special meanings. Those labeled as |
599 | \"(required)\", should not be omitted. | |
c1841772 KH |
600 | |
601 | `:mnemonic' (required) | |
602 | ||
603 | VALUE is a character to display on mode line for the coding system. | |
604 | ||
605 | `:coding-type' (required) | |
606 | ||
607 | VALUE must be one of `charset', `utf-8', `utf-16', `iso-2022', | |
1bfd603c | 608 | `emacs-mule', `shift-jis', `ccl', `raw-text', `undecided'. |
c1841772 | 609 | |
12504f57 | 610 | `:eol-type' |
c1841772 | 611 | |
12504f57 | 612 | VALUE is the EOL (end-of-line) format of the coding system. It must be |
c1841772 KH |
613 | one of `unix', `dos', `mac'. The symbol `unix' means Unix-like EOL |
614 | \(i.e. single LF), `dos' means DOS-like EOL \(i.e. sequence of CR LF), | |
615 | and `mac' means MAC-like EOL \(i.e. single CR). If omitted, on | |
12504f57 | 616 | decoding by the coding system, Emacs automatically detects the EOL |
c1841772 KH |
617 | format of the source text. |
618 | ||
736345cb | 619 | `:charset-list' |
c1841772 KH |
620 | |
621 | VALUE must be a list of charsets supported by the coding system. On | |
622 | encoding by the coding system, if a character belongs to multiple | |
623 | charsets in the list, a charset that comes earlier in the list is | |
736345cb KH |
624 | selected. If `:coding-type' is `iso-2022', VALUE may be `iso-2022', |
625 | which indicates that the coding system supports all ISO-2022 based | |
626 | charsets. If `:coding-type' is `emacs-mule', VALUE may be | |
627 | `emacs-mule', which indicates that the coding system supports all | |
1d839a14 | 628 | charsets that have the `:emacs-mule-id' property. |
c1841772 | 629 | |
12504f57 | 630 | `:ascii-compatible-p' |
c1841772 KH |
631 | |
632 | If VALUE is non-nil, the coding system decodes all 7-bit bytes into | |
07513d64 | 633 | the corresponding ASCII characters, and encodes all ASCII characters |
12504f57 | 634 | back to the corresponding 7-bit bytes. VALUE defaults to nil. |
c1841772 | 635 | |
12504f57 | 636 | `:decode-translation-table' |
c1841772 KH |
637 | |
638 | VALUE must be a translation table to use on decoding. | |
639 | ||
12504f57 | 640 | `:encode-translation-table' |
c1841772 KH |
641 | |
642 | VALUE must be a translation table to use on encoding. | |
643 | ||
12504f57 | 644 | `:post-read-conversion' |
c1841772 KH |
645 | |
646 | VALUE must be a function to call after some text is inserted and | |
647 | decoded by the coding system itself and before any functions in | |
648 | `after-insert-functions' are called. The arguments to this function | |
12504f57 DL |
649 | are the same as those of a function in `after-insert-file-functions', |
650 | i.e. LENGTH of the text to be decoded with point at the head of it, | |
651 | and the function should leave point unchanged. | |
c1841772 KH |
652 | |
653 | `:pre-write-conversion' | |
654 | ||
655 | VALUE must be a function to call after all functions in | |
656 | `write-region-annotate-functions' and `buffer-file-format' are called, | |
657 | and before the text is encoded by the coding system itself. The | |
12504f57 DL |
658 | arguments to this function are the same as those of a function in |
659 | `write-region-annotate-functions'. | |
c1841772 KH |
660 | |
661 | `:default-char' | |
662 | ||
663 | VALUE must be a character. On encoding, a character not supported by | |
664 | the coding system is replaced with VALUE. | |
665 | ||
8f924df7 KH |
666 | `:for-unibyte' |
667 | ||
668 | VALUE non-nil means that visiting a file with the coding system | |
669 | results in a unibyte buffer. | |
670 | ||
c1841772 KH |
671 | `:eol-type' |
672 | ||
673 | VALUE must be `unix', `dos', `mac'. The symbol `unix' means Unix-like | |
674 | EOL (LF), `dos' means DOS-like EOL (CRLF), and `mac' means MAC-like | |
12504f57 DL |
675 | EOL (CR). If omitted, on decoding, the coding system detects EOL |
676 | format automatically, and on encoding, uses Unix-like EOL. | |
c1841772 KH |
677 | |
678 | `:mime-charset' | |
679 | ||
12504f57 DL |
680 | VALUE must be a symbol whose name is that of a MIME charset converted |
681 | to lower case. | |
c1841772 | 682 | |
1bfd603c DL |
683 | `:mime-text-unsuitable' |
684 | ||
685 | VALUE non-nil means the `:mime-charset' property names a charset which | |
1894d108 | 686 | is unsuitable for the top-level media type \"text\". |
1bfd603c | 687 | |
c1841772 KH |
688 | `:flags' |
689 | ||
12504f57 DL |
690 | VALUE must be a list of symbols that control the ISO-2022 converter. |
691 | Each must be a member of the list `coding-system-iso-2022-flags' | |
c1841772 KH |
692 | \(which see). This attribute has a meaning only when `:coding-type' |
693 | is `iso-2022'. | |
694 | ||
695 | `:designation' | |
696 | ||
12504f57 | 697 | VALUE must be a vector [G0-USAGE G1-USAGE G2-USAGE G3-USAGE]. |
c1841772 KH |
698 | GN-USAGE specifies the usage of graphic register GN as follows. |
699 | ||
700 | If it is nil, no charset can be designated to GN. | |
701 | ||
07513d64 | 702 | If it is a charset, the charset is initially designated to GN, and |
c1841772 KH |
703 | never used by the other charsets. |
704 | ||
705 | If it is a list, the elements must be charsets, nil, 94, or 96. GN | |
12504f57 DL |
706 | can be used by all the listed charsets. If the list contains 94, any |
707 | iso-2022 charset whose code-space ranges are 94 long can be designated | |
708 | to GN. If the list contains 96, any charsets whose whose ranges are | |
709 | 96 long can be designated to GN. If the first element is a charset, | |
710 | that charset is initially designated to GN. | |
c1841772 KH |
711 | |
712 | This attribute has a meaning only when `:coding-type' is `iso-2022'. | |
713 | ||
714 | `:bom' | |
715 | ||
12504f57 DL |
716 | This attributes specifies whether the coding system uses a `byte order |
717 | mark'. VALUE must nil, t, or cons of coding systems whose | |
718 | `:coding-type' is `utf-16'. | |
c1841772 | 719 | |
0ea1a6ca KH |
720 | If the value is nil, on decoding, don't treat the first two-byte as |
721 | BOM, and on encoding, don't produce BOM bytes. | |
722 | ||
723 | If the value is t, on decoding, skip the first two-byte as BOM, and on | |
724 | encoding, produce BOM bytes accoding to the value of `:endian'. | |
725 | ||
726 | If the value is cons, on decoding, check the first two-byte. If theyq | |
727 | are 0xFE 0xFF, use the car part coding system of the value. If they | |
728 | are 0xFF 0xFE, use the car part coding system of the value. | |
729 | Otherwise, treat them as bytes for a normal character. On encoding, | |
730 | produce BOM bytes accoding to the value of `:endian'. | |
731 | ||
c1841772 KH |
732 | This attribute has a meaning only when `:coding-type' is `utf-16'. |
733 | ||
734 | `:endian' | |
735 | ||
0ea1a6ca KH |
736 | VALUE must be `big' or `little' specifying big-endian and |
737 | little-endian respectively. The default value is `big'. | |
c1841772 KH |
738 | |
739 | This attribute has a meaning only when `:coding-type' is `utf-16'. | |
740 | ||
741 | `:ccl-decoder' | |
742 | ||
12504f57 DL |
743 | VALUE is a symbol representing the registered CCL program used for |
744 | decoding. This attribute has a meaning only when `:coding-type' is | |
745 | `ccl'. | |
c1841772 KH |
746 | |
747 | `:ccl-encoder' | |
748 | ||
12504f57 DL |
749 | VALUE is a symbol representing the registered CCL program used for |
750 | encoding. This attribute has a meaning only when `:coding-type' is | |
751 | `ccl'." | |
c1841772 KH |
752 | (let* ((common-attrs (mapcar 'list |
753 | '(:mnemonic | |
754 | :coding-type | |
755 | :charset-list | |
756 | :ascii-compatible-p | |
1a9db556 | 757 | :decode-translation-table |
c1841772 KH |
758 | :encode-translation-table |
759 | :post-read-conversion | |
760 | :pre-write-conversion | |
761 | :default-char | |
7e742024 | 762 | :for-unibyte |
c1841772 KH |
763 | :plist |
764 | :eol-type))) | |
765 | (coding-type (plist-get props :coding-type)) | |
766 | (spec-attrs (mapcar 'list | |
767 | (cond ((eq coding-type 'iso-2022) | |
768 | '(:initial | |
769 | :reg-usage | |
770 | :request | |
771 | :flags)) | |
772 | ((eq coding-type 'utf-16) | |
773 | '(:bom | |
774 | :endian)) | |
775 | ((eq coding-type 'ccl) | |
776 | '(:ccl-decoder | |
777 | :ccl-encoder | |
778 | :valids)))))) | |
779 | ||
780 | (dolist (slot common-attrs) | |
781 | (setcdr slot (plist-get props (car slot)))) | |
782 | ||
783 | (dolist (slot spec-attrs) | |
784 | (setcdr slot (plist-get props (car slot)))) | |
785 | ||
786 | (if (eq coding-type 'iso-2022) | |
787 | (let ((designation (plist-get props :designation)) | |
788 | (flags (plist-get props :flags)) | |
789 | (initial (make-vector 4 nil)) | |
790 | (reg-usage (cons 4 4)) | |
791 | request elt) | |
792 | (dotimes (i 4) | |
793 | (setq elt (aref designation i)) | |
794 | (cond ((charsetp elt) | |
795 | (aset initial i elt) | |
796 | (setq request (cons (cons elt i) request))) | |
797 | ((consp elt) | |
798 | (aset initial i (car elt)) | |
799 | (if (charsetp (car elt)) | |
800 | (setq request (cons (cons (car elt) i) request))) | |
801 | (dolist (e (cdr elt)) | |
802 | (cond ((charsetp e) | |
803 | (setq request (cons (cons e i) request))) | |
804 | ((eq e 94) | |
805 | (setcar reg-usage i)) | |
806 | ((eq e 96) | |
807 | (setcdr reg-usage i)) | |
808 | ((eq e t) | |
809 | (setcar reg-usage i) | |
810 | (setcdr reg-usage i))))))) | |
811 | (setcdr (assq :initial spec-attrs) initial) | |
812 | (setcdr (assq :reg-usage spec-attrs) reg-usage) | |
813 | (setcdr (assq :request spec-attrs) request) | |
814 | ||
815 | ;; Change :flags value from a list to a bit-mask. | |
816 | (let ((bits 0) | |
817 | (i 0)) | |
818 | (dolist (elt coding-system-iso-2022-flags) | |
819 | (if (memq elt flags) | |
820 | (setq bits (logior bits (lsh 1 i)))) | |
821 | (setq i (1+ i))) | |
822 | (setcdr (assq :flags spec-attrs) bits)))) | |
823 | ||
824 | ;; Add :name and :docstring properties to PROPS. | |
825 | (setq props | |
e1e529fa DL |
826 | (cons :name (cons name (cons :docstring (cons (purecopy docstring) |
827 | props))))) | |
c1841772 | 828 | (setcdr (assq :plist common-attrs) props) |
c1841772 KH |
829 | (apply 'define-coding-system-internal |
830 | name (mapcar 'cdr (append common-attrs spec-attrs))))) | |
4ed46869 | 831 | |
8057896b | 832 | (defun coding-system-doc-string (coding-system) |
0269ddfb | 833 | "Return the documentation string for CODING-SYSTEM." |
c1841772 | 834 | (plist-get (coding-system-plist coding-system) :docstring)) |
4ed46869 | 835 | |
4ed46869 | 836 | (defun coding-system-mnemonic (coding-system) |
0269ddfb | 837 | "Return the mnemonic character of CODING-SYSTEM. |
12504f57 DL |
838 | The mnemonic character of a coding system is used in mode line to |
839 | indicate the coding system. If CODING-SYSTEM. is nil, return ?=." | |
c1841772 | 840 | (plist-get (coding-system-plist coding-system) :mnemonic)) |
4ed46869 | 841 | |
c1841772 KH |
842 | (defun coding-system-type (coding-system) |
843 | "Return the coding type of CODING-SYSTEM. | |
844 | A coding type is a symbol indicating the encoding method of CODING-SYSTEM. | |
845 | See the function `define-coding-system' for more detail." | |
846 | (plist-get (coding-system-plist coding-system) :coding-type)) | |
d3675a42 | 847 | |
c1841772 | 848 | (defun coding-system-charset-list (coding-system) |
07513d64 | 849 | "Return list of charsets supported by CODING-SYSTEM. |
c1841772 KH |
850 | If CODING-SYSTEM supports all ISO-2022 charsets, return `iso-2022'. |
851 | If CODING-SYSTEM supports all emacs-mule charsets, return `emacs-mule'." | |
852 | (plist-get (coding-system-plist coding-system) :charset-list)) | |
0269ddfb | 853 | |
2f1e746b KH |
854 | (defun coding-system-category (coding-system) |
855 | "Return a category symbol of CODING-SYSTEM." | |
856 | (plist-get (coding-system-plist coding-system) :category)) | |
0269ddfb KH |
857 | |
858 | (defun coding-system-get (coding-system prop) | |
07513d64 DL |
859 | "Extract a value from CODING-SYSTEM's property list for property PROP. |
860 | For compatibility with Emacs 20/21, this accepts old-style symbols | |
861 | like `mime-charset' as well as the current style like `:mime-charset'." | |
862 | (or (plist-get (coding-system-plist coding-system) prop) | |
863 | (if (not (keywordp prop)) | |
356384dc KH |
864 | ;; For backward compatiblity. |
865 | (if (eq prop 'ascii-incompatible) | |
866 | (not (plist-get (coding-system-plist coding-system) | |
867 | :ascii-compatible-p)) | |
868 | (plist-get (coding-system-plist coding-system) | |
869 | (intern (concat ":" (symbol-name prop)))))))) | |
0269ddfb | 870 | |
2e729bfa JB |
871 | (defun coding-system-eol-type-mnemonic (coding-system) |
872 | "Return the string indicating end-of-line format of CODING-SYSTEM." | |
873 | (let* ((eol-type (coding-system-eol-type coding-system)) | |
f4f00827 | 874 | (val (cond ((eq eol-type 0) eol-mnemonic-unix) |
2e729bfa JB |
875 | ((eq eol-type 1) eol-mnemonic-dos) |
876 | ((eq eol-type 2) eol-mnemonic-mac) | |
f4f00827 | 877 | (t eol-mnemonic-undecided)))) |
2e729bfa JB |
878 | (if (stringp val) |
879 | val | |
880 | (char-to-string val)))) | |
881 | ||
857ea15c AS |
882 | (defun coding-system-lessp (x y) |
883 | (cond ((eq x 'no-conversion) t) | |
884 | ((eq y 'no-conversion) nil) | |
885 | ((eq x 'emacs-mule) t) | |
886 | ((eq y 'emacs-mule) nil) | |
887 | ((eq x 'undecided) t) | |
888 | ((eq y 'undecided) nil) | |
889 | (t (let ((c1 (coding-system-mnemonic x)) | |
890 | (c2 (coding-system-mnemonic y))) | |
891 | (or (< (downcase c1) (downcase c2)) | |
892 | (and (not (> (downcase c1) (downcase c2))) | |
893 | (< c1 c2))))))) | |
894 | ||
5e2e859a KH |
895 | (defun coding-system-equal (coding-system-1 coding-system-2) |
896 | "Return t if and only if CODING-SYSTEM-1 and CODING-SYSTEM-2 are identical. | |
897 | Two coding systems are identical if two symbols are equal | |
898 | or one is an alias of the other." | |
899 | (or (eq coding-system-1 coding-system-2) | |
daff7d74 KH |
900 | (and (equal (coding-system-plist coding-system-1) |
901 | (coding-system-plist coding-system-2)) | |
5e2e859a KH |
902 | (let ((eol-type-1 (coding-system-eol-type coding-system-1)) |
903 | (eol-type-2 (coding-system-eol-type coding-system-2))) | |
904 | (or (eq eol-type-1 eol-type-2) | |
905 | (and (vectorp eol-type-1) (vectorp eol-type-2))))))) | |
906 | ||
857ea15c | 907 | (defun add-to-coding-system-list (coding-system) |
521d4010 | 908 | "Add CODING-SYSTEM to `coding-system-list' while keeping it sorted." |
857ea15c AS |
909 | (if (or (null coding-system-list) |
910 | (coding-system-lessp coding-system (car coding-system-list))) | |
911 | (setq coding-system-list (cons coding-system coding-system-list)) | |
912 | (let ((len (length coding-system-list)) | |
913 | mid (tem coding-system-list)) | |
914 | (while (> len 1) | |
915 | (setq mid (nthcdr (/ len 2) tem)) | |
916 | (if (coding-system-lessp (car mid) coding-system) | |
917 | (setq tem mid | |
918 | len (- len (/ len 2))) | |
919 | (setq len (/ len 2)))) | |
920 | (setcdr tem (cons coding-system (cdr tem)))))) | |
921 | ||
80a7463d | 922 | (defun coding-system-list (&optional base-only) |
c11a8f77 | 923 | "Return a list of all existing non-subsidiary coding systems. |
12504f57 DL |
924 | If optional arg BASE-ONLY is non-nil, only base coding systems are |
925 | listed. The value doesn't include subsidiary coding systems which are | |
c11a8f77 KH |
926 | made from bases and aliases automatically for various end-of-line |
927 | formats (e.g. iso-latin-1-unix, koi8-r-dos)." | |
4f06ffe1 KH |
928 | (let ((codings nil)) |
929 | (dolist (coding coding-system-list) | |
930 | (if (eq (coding-system-base coding) coding) | |
931 | (if base-only | |
932 | (setq codings (cons coding codings)) | |
933 | (dolist (alias (coding-system-aliases coding)) | |
934 | (setq codings (cons alias codings)))))) | |
80a7463d KH |
935 | codings)) |
936 | ||
620956ca KH |
937 | (defconst char-coding-system-table nil |
938 | "This is an obsolete variable. | |
939 | It exists just for backward compatibility, and the value is always nil.") | |
c11a8f77 | 940 | |
50c29104 KH |
941 | (defun transform-make-coding-system-args (name type &optional doc-string props) |
942 | "For internal use only. | |
943 | Transform XEmacs style args for `make-coding-system' to Emacs style. | |
944 | Value is a list of transformed arguments." | |
945 | (let ((mnemonic (string-to-char (or (plist-get props 'mnemonic) "?"))) | |
946 | (eol-type (plist-get props 'eol-type)) | |
947 | properties tmp) | |
948 | (cond | |
949 | ((eq eol-type 'lf) (setq eol-type 'unix)) | |
950 | ((eq eol-type 'crlf) (setq eol-type 'dos)) | |
951 | ((eq eol-type 'cr) (setq eol-type 'mac))) | |
952 | (if (setq tmp (plist-get props 'post-read-conversion)) | |
953 | (setq properties (plist-put properties 'post-read-conversion tmp))) | |
954 | (if (setq tmp (plist-get props 'pre-write-conversion)) | |
955 | (setq properties (plist-put properties 'pre-write-conversion tmp))) | |
956 | (cond | |
f4a012a6 KH |
957 | ((eq type 'shift-jis) |
958 | `(,name 1 ,mnemonic ,doc-string () ,properties ,eol-type)) | |
959 | ((eq type 'iso2022) ; This is not perfect. | |
960 | (if (plist-get props 'escape-quoted) | |
961 | (error "escape-quoted is not supported: %S" | |
962 | `(,name ,type ,doc-string ,props))) | |
963 | (let ((g0 (plist-get props 'charset-g0)) | |
964 | (g1 (plist-get props 'charset-g1)) | |
965 | (g2 (plist-get props 'charset-g2)) | |
966 | (g3 (plist-get props 'charset-g3)) | |
967 | (use-roman | |
968 | (and | |
969 | (eq (cadr (assoc 'latin-jisx0201 | |
970 | (plist-get props 'input-charset-conversion))) | |
971 | 'ascii) | |
972 | (eq (cadr (assoc 'ascii | |
973 | (plist-get props 'output-charset-conversion))) | |
974 | 'latin-jisx0201))) | |
975 | (use-oldjis | |
976 | (and | |
977 | (eq (cadr (assoc 'japanese-jisx0208-1978 | |
978 | (plist-get props 'input-charset-conversion))) | |
979 | 'japanese-jisx0208) | |
980 | (eq (cadr (assoc 'japanese-jisx0208 | |
981 | (plist-get props 'output-charset-conversion))) | |
982 | 'japanese-jisx0208-1978)))) | |
983 | (if (charsetp g0) | |
984 | (if (plist-get props 'force-g0-on-output) | |
985 | (setq g0 `(nil ,g0)) | |
986 | (setq g0 `(,g0 t)))) | |
987 | (if (charsetp g1) | |
988 | (if (plist-get props 'force-g1-on-output) | |
989 | (setq g1 `(nil ,g1)) | |
990 | (setq g1 `(,g1 t)))) | |
991 | (if (charsetp g2) | |
992 | (if (plist-get props 'force-g2-on-output) | |
993 | (setq g2 `(nil ,g2)) | |
994 | (setq g2 `(,g2 t)))) | |
995 | (if (charsetp g3) | |
996 | (if (plist-get props 'force-g3-on-output) | |
997 | (setq g3 `(nil ,g3)) | |
998 | (setq g3 `(,g3 t)))) | |
999 | `(,name 2 ,mnemonic ,doc-string | |
1000 | (,g0 ,g1 ,g2 ,g3 | |
1001 | ,(plist-get props 'short) | |
1002 | ,(not (plist-get props 'no-ascii-eol)) | |
1003 | ,(not (plist-get props 'no-ascii-cntl)) | |
1004 | ,(plist-get props 'seven) | |
1005 | t | |
1006 | ,(not (plist-get props 'lock-shift)) | |
1007 | ,use-roman | |
1008 | ,use-oldjis | |
1009 | ,(plist-get props 'no-iso6429) | |
1010 | nil nil nil nil) | |
1011 | ,properties ,eol-type))) | |
1012 | ((eq type 'big5) | |
1013 | `(,name 3 ,mnemonic ,doc-string () ,properties ,eol-type)) | |
50c29104 | 1014 | ((eq type 'ccl) |
f4a012a6 | 1015 | `(,name 4 ,mnemonic ,doc-string |
50c29104 | 1016 | (,(plist-get props 'decode) . ,(plist-get props 'encode)) |
f4a012a6 | 1017 | ,properties ,eol-type)) |
50c29104 | 1018 | (t |
f4a012a6 | 1019 | (error "unsupported XEmacs style make-coding-style arguments: %S" |
50c29104 KH |
1020 | `(,name ,type ,doc-string ,props)))))) |
1021 | ||
8057896b | 1022 | (defun make-coding-system (coding-system type mnemonic doc-string |
1b46a680 KH |
1023 | &optional |
1024 | flags | |
1025 | properties | |
1026 | eol-type) | |
3bb1accb | 1027 | "Define a new coding system CODING-SYSTEM (symbol). |
8f924df7 KH |
1028 | This function is provided for backward compatibility. |
1029 | Use `define-coding-system' instead." | |
50c29104 | 1030 | ;; For compatiblity with XEmacs, we check the type of TYPE. If it |
c3d0ee51 EZ |
1031 | ;; is a symbol, perhaps, this function is called with XEmacs-style |
1032 | ;; arguments. Here, try to transform that kind of arguments to | |
50c29104 KH |
1033 | ;; Emacs style. |
1034 | (if (symbolp type) | |
1035 | (let ((args (transform-make-coding-system-args coding-system type | |
1036 | mnemonic doc-string))) | |
1037 | (setq coding-system (car args) | |
1053cc93 | 1038 | type (nth 1 args) |
50c29104 KH |
1039 | mnemonic (nth 2 args) |
1040 | doc-string (nth 3 args) | |
1041 | flags (nth 4 args) | |
1042 | properties (nth 5 args) | |
1043 | eol-type (nth 6 args)))) | |
1044 | ||
8f924df7 KH |
1045 | (setq type |
1046 | (cond ((eq type 0) 'emacs-mule) | |
1047 | ((eq type 1) 'shift-jis) | |
1048 | ((eq type 2) 'iso2022) | |
1049 | ((eq type 3) 'big5) | |
1050 | ((eq type 4) 'ccl) | |
1051 | ((eq type 5) 'raw-text) | |
1b46a680 | 1052 | (t |
8f924df7 KH |
1053 | (error "Invalid coding system type: %s" type)))) |
1054 | ||
1055 | (setq properties | |
1056 | (let ((plist nil) key) | |
1057 | (dolist (elt properties) | |
1058 | (setq key (car elt)) | |
1059 | (cond ((eq key 'post-read-conversion) | |
1060 | (setq key :post-read-conversion)) | |
1061 | ((eq key 'pre-write-conversion) | |
1062 | (setq key :pre-write-conversion)) | |
1063 | ((eq key 'translation-table-for-decode) | |
1064 | (setq key :decode-translation-table)) | |
1065 | ((eq key 'translation-table-for-encode) | |
1066 | (setq key :encode-translation-table)) | |
1067 | ((eq key 'safe-charsets) | |
1068 | (setq key :charset-list)) | |
1069 | ((eq key 'mime-charset) | |
1070 | (setq key :mime-charset)) | |
1071 | ((eq key 'valid-codes) | |
1072 | (setq key :valids))) | |
1073 | (setq plist (plist-put plist key (cdr elt)))) | |
1074 | plist)) | |
28380f17 | 1075 | (setq properties (plist-put properties :mnemonic mnemonic)) |
8f924df7 KH |
1076 | (plist-put properties :coding-type type) |
1077 | (cond ((eq eol-type 0) (setq eol-type 'unix)) | |
1078 | ((eq eol-type 1) (setq eol-type 'dos)) | |
1079 | ((eq eol-type 2) (setq eol-type 'mac)) | |
1080 | ((vectorp eol-type) (setq eol-type nil))) | |
1081 | (plist-put properties :eol-type eol-type) | |
1082 | ||
1083 | (cond | |
1084 | ((eq type 'iso2022) | |
1085 | (plist-put properties :flags | |
1086 | (list (and (or (consp (nth 0 flags)) | |
1087 | (consp (nth 1 flags)) | |
1088 | (consp (nth 2 flags)) | |
1089 | (consp (nth 3 flags))) 'designation) | |
1090 | (or (nth 4 flags) 'long-form) | |
1091 | (and (nth 5 flags) 'ascii-at-eol) | |
1092 | (and (nth 6 flags) 'ascii-at-cntl) | |
1093 | (and (nth 7 flags) '7-bit) | |
1094 | (and (nth 8 flags) 'locking-shift) | |
1095 | (and (nth 9 flags) 'single-shift) | |
1096 | (and (nth 10 flags) 'use-roman) | |
1097 | (and (nth 11 flags) 'use-oldjis) | |
1098 | (or (nth 12 flags) 'direction) | |
1099 | (and (nth 13 flags) 'init-at-bol) | |
1100 | (and (nth 14 flags) 'designate-at-bol) | |
1101 | (and (nth 15 flags) 'safe) | |
1102 | (and (nth 16 flags) 'latin-extra))) | |
1103 | (plist-put properties :designation | |
1104 | (let ((vec (make-vector 4 nil))) | |
1105 | (dotimes (i 4) | |
1106 | (let ((spec (nth i flags))) | |
1107 | (if (eq spec t) | |
1108 | (aset vec i '(94 96)) | |
1109 | (if (consp spec) | |
1110 | (progn | |
1111 | (if (memq t spec) | |
1112 | (setq spec (append (delq t spec) '(94 96)))) | |
1113 | (aset vec i spec)))))) | |
1114 | vec))) | |
1115 | ||
1116 | ((eq type 'ccl) | |
1117 | (plist-put properties :ccl-decoder (car flags)) | |
1118 | (plist-put properties :ccl-encoder (cdr flags)))) | |
1119 | ||
1120 | (apply 'define-coding-system coding-system doc-string properties)) | |
4ed46869 | 1121 | |
bbdea948 RS |
1122 | (defun merge-coding-systems (first second) |
1123 | "Fill in any unspecified aspects of coding system FIRST from SECOND. | |
1124 | Return the resulting coding system." | |
1125 | (let ((base (coding-system-base second)) | |
1126 | (eol (coding-system-eol-type second))) | |
1127 | ;; If FIRST doesn't specify text conversion, merge with that of SECOND. | |
1128 | (if (eq (coding-system-base first) 'undecided) | |
1129 | (setq first (coding-system-change-text-conversion first base))) | |
1130 | ;; If FIRST doesn't specify eol conversion, merge with that of SECOND. | |
1131 | (if (and (vectorp (coding-system-eol-type first)) | |
1132 | (numberp eol) (>= eol 0) (<= eol 2)) | |
1133 | (setq first (coding-system-change-eol-conversion | |
1134 | first eol))) | |
1135 | first)) | |
1136 | ||
2da14137 KH |
1137 | (defun autoload-coding-system (symbol form) |
1138 | "Define SYMBOL as a coding-system that is defined on demand. | |
1139 | ||
1140 | FROM is a form to evaluate to define the coding-system." | |
1141 | (put symbol 'coding-system-define-form form) | |
1142 | (setq coding-system-alist (cons (list (symbol-name symbol)) | |
1143 | coding-system-alist)) | |
1144 | (dolist (elt '("-unix" "-dos" "-mac")) | |
1145 | (let ((name (concat (symbol-name symbol) elt))) | |
1146 | (put (intern name) 'coding-system-define-form form) | |
1147 | (setq coding-system-alist (cons (list name) coding-system-alist))))) | |
1148 | ||
14b3fa07 | 1149 | (defun set-buffer-file-coding-system (coding-system &optional force nomodify) |
358d28fb RS |
1150 | "Set the file coding-system of the current buffer to CODING-SYSTEM. |
1151 | This means that when you save the buffer, it will be converted | |
1152 | according to CODING-SYSTEM. For a list of possible values of CODING-SYSTEM, | |
1153 | use \\[list-coding-systems]. | |
1154 | ||
bbdea948 RS |
1155 | If CODING-SYSTEM leaves the text conversion unspecified, or if it |
1156 | leaves the end-of-line conversion unspecified, FORCE controls what to | |
1157 | do. If FORCE is nil, get the unspecified aspect (or aspects) from the | |
1158 | buffer's previous `buffer-file-coding-system' value (if it is | |
6b61353c | 1159 | specified there). Otherwise, leave it unspecified. |
aeef8f07 KH |
1160 | |
1161 | This marks the buffer modified so that the succeeding \\[save-buffer] | |
1162 | surely saves the buffer with CODING-SYSTEM. From a program, if you | |
14b3fa07 RS |
1163 | don't want to mark the buffer modified, specify t for NOMODIFY. |
1164 | If you know exactly what coding system you want to use, | |
1165 | just set the variable `buffer-file-coding-system' directly." | |
5b76833f | 1166 | (interactive "zCoding system for saving file (default nil): \nP") |
4ed46869 | 1167 | (check-coding-system coding-system) |
36d455c4 | 1168 | (if (and coding-system buffer-file-coding-system (null force)) |
bbdea948 RS |
1169 | (setq coding-system |
1170 | (merge-coding-systems coding-system buffer-file-coding-system))) | |
4ed46869 | 1171 | (setq buffer-file-coding-system coding-system) |
38a1356d RS |
1172 | ;; This is in case of an explicit call. Normally, `normal-mode' and |
1173 | ;; `set-buffer-major-mode-hook' take care of setting the table. | |
1174 | (if (fboundp 'ucs-set-table-for-input) ; don't lose when building | |
1175 | (ucs-set-table-for-input)) | |
de5ffead RS |
1176 | (unless nomodify |
1177 | (set-buffer-modified-p t)) | |
4ed46869 KH |
1178 | (force-mode-line-update)) |
1179 | ||
bbdea948 RS |
1180 | (defun revert-buffer-with-coding-system (coding-system &optional force) |
1181 | "Visit the current buffer's file again using coding system CODING-SYSTEM. | |
1182 | For a list of possible values of CODING-SYSTEM, use \\[list-coding-systems]. | |
1183 | ||
1184 | If CODING-SYSTEM leaves the text conversion unspecified, or if it | |
1185 | leaves the end-of-line conversion unspecified, FORCE controls what to | |
1186 | do. If FORCE is nil, get the unspecified aspect (or aspects) from the | |
1187 | buffer's previous `buffer-file-coding-system' value (if it is | |
1188 | specified there). Otherwise, determine it from the file contents as | |
1189 | usual for visiting a file." | |
5b76833f | 1190 | (interactive "zCoding system for visited file (default nil): \nP") |
bbdea948 RS |
1191 | (check-coding-system coding-system) |
1192 | (if (and coding-system buffer-file-coding-system (null force)) | |
1193 | (setq coding-system | |
1194 | (merge-coding-systems coding-system buffer-file-coding-system))) | |
1195 | (let ((coding-system-for-read coding-system)) | |
1196 | (revert-buffer))) | |
1197 | ||
701414e3 KH |
1198 | (defun set-file-name-coding-system (coding-system) |
1199 | "Set coding system for decoding and encoding file names to CODING-SYSTEM. | |
1200 | It actually just set the variable `file-name-coding-system' (which | |
1201 | see) to CODING-SYSTEM." | |
5b76833f | 1202 | (interactive "zCoding system for file names (default nil): ") |
701414e3 | 1203 | (check-coding-system coding-system) |
356384dc KH |
1204 | (if (and coding-system |
1205 | (not (coding-system-get coding-system :ascii-compatible-p)) | |
1206 | (not (coding-system-get coding-system :suitable-for-file-name))) | |
1207 | (error "%s is not suitable for file names" coding-system)) | |
701414e3 KH |
1208 | (setq file-name-coding-system coding-system)) |
1209 | ||
358d28fb RS |
1210 | (defvar default-terminal-coding-system nil |
1211 | "Default value for the terminal coding system. | |
1212 | This is normally set according to the selected language environment. | |
1213 | See also the command `set-terminal-coding-system'.") | |
1214 | ||
68bba4e4 KL |
1215 | (defun set-terminal-coding-system (coding-system &optional display) |
1216 | "Set coding system of terminal output to CODING-SYSTEM. | |
1217 | All text output to DISPLAY will be encoded | |
358d28fb | 1218 | with the specified coding system. |
68bba4e4 | 1219 | |
358d28fb RS |
1220 | For a list of possible values of CODING-SYSTEM, use \\[list-coding-systems]. |
1221 | The default is determined by the selected language environment | |
68bba4e4 KL |
1222 | or by the previous use of this command. |
1223 | ||
1224 | DISPLAY may be a display id, a frame, or nil for the selected frame's display. | |
1225 | The setting has no effect on graphical displays." | |
358d28fb | 1226 | (interactive |
2e02a76f RS |
1227 | (list (let ((default (if (and (not (terminal-coding-system)) |
1228 | default-terminal-coding-system) | |
1229 | default-terminal-coding-system))) | |
1230 | (read-coding-system | |
5b76833f | 1231 | (format "Coding system for terminal display (default %s): " |
2e02a76f RS |
1232 | default) |
1233 | default)))) | |
358d28fb RS |
1234 | (if (and (not coding-system) |
1235 | (not (terminal-coding-system))) | |
1236 | (setq coding-system default-terminal-coding-system)) | |
1237 | (if coding-system | |
521d4010 | 1238 | (setq default-terminal-coding-system coding-system)) |
68bba4e4 | 1239 | (set-terminal-coding-system-internal coding-system display) |
df100398 KH |
1240 | (redraw-frame (selected-frame))) |
1241 | ||
358d28fb RS |
1242 | (defvar default-keyboard-coding-system nil |
1243 | "Default value of the keyboard coding system. | |
1244 | This is normally set according to the selected language environment. | |
1245 | See also the command `set-keyboard-coding-system'.") | |
1246 | ||
68bba4e4 KL |
1247 | (defun set-keyboard-coding-system (coding-system &optional display) |
1248 | "Set coding system for keyboard input on DISPLAY to CODING-SYSTEM. | |
40df3a99 KL |
1249 | In addition, this command calls `encoded-kbd-setup-display' to set up the |
1250 | translation of keyboard input events to the specified coding system. | |
68bba4e4 | 1251 | |
358d28fb RS |
1252 | For a list of possible values of CODING-SYSTEM, use \\[list-coding-systems]. |
1253 | The default is determined by the selected language environment | |
68bba4e4 KL |
1254 | or by the previous use of this command. |
1255 | ||
1256 | DISPLAY may be a display id, a frame, or nil for the selected frame's display. | |
1257 | The setting has no effect on graphical displays." | |
358d28fb | 1258 | (interactive |
2e02a76f RS |
1259 | (list (let ((default (if (and (not (keyboard-coding-system)) |
1260 | default-keyboard-coding-system) | |
1261 | default-keyboard-coding-system))) | |
1262 | (read-coding-system | |
5b76833f | 1263 | (format "Coding system for keyboard input (default %s): " |
2e02a76f RS |
1264 | default) |
1265 | default)))) | |
358d28fb RS |
1266 | (if (and (not coding-system) |
1267 | (not (keyboard-coding-system))) | |
1268 | (setq coding-system default-keyboard-coding-system)) | |
1269 | (if coding-system | |
1270 | (setq default-keyboard-coding-system coding-system)) | |
356384dc KH |
1271 | (if (and coding-system |
1272 | (not (coding-system-get coding-system :ascii-compatible-p)) | |
1273 | (not (coding-system-get coding-system :suitable-for-keyboard))) | |
1274 | (error "%s is not suitable for keyboard" coding-system)) | |
68bba4e4 | 1275 | (set-keyboard-coding-system-internal coding-system display) |
b23bad0b | 1276 | (setq keyboard-coding-system coding-system) |
40df3a99 | 1277 | (encoded-kbd-setup-display display)) |
df100398 | 1278 | |
6d34f495 DL |
1279 | (defcustom keyboard-coding-system nil |
1280 | "Specify coding system for keyboard input. | |
1281 | If you set this on a terminal which can't distinguish Meta keys from | |
1282 | 8-bit characters, you will have to use ESC to type Meta characters. | |
50e5c885 | 1283 | See Info node `Terminal Coding' and Info node `Unibyte Mode'. |
6d34f495 | 1284 | |
237e5993 DL |
1285 | On non-windowing terminals, this is set from the locale by default. |
1286 | ||
6d34f495 | 1287 | Setting this variable directly does not take effect; |
6b61353c | 1288 | use either \\[customize] or \\[set-keyboard-coding-system]." |
6d34f495 | 1289 | :type '(coding-system :tag "Coding system") |
50e5c885 EZ |
1290 | :link '(info-link "(emacs)Terminal Coding") |
1291 | :link '(info-link "(emacs)Unibyte Mode") | |
6d34f495 | 1292 | :set (lambda (symbol value) |
2a42d440 KL |
1293 | ;; Don't load encoded-kb unnecessarily. |
1294 | (if (or value (boundp 'encoded-kbd-setup-display)) | |
6d34f495 DL |
1295 | (set-keyboard-coding-system value) |
1296 | (set-default 'keyboard-coding-system nil))) ; must initialize | |
bf247b6e | 1297 | :version "22.1" |
6d34f495 DL |
1298 | :group 'keyboard |
1299 | :group 'mule) | |
1300 | ||
df100398 | 1301 | (defun set-buffer-process-coding-system (decoding encoding) |
358d28fb | 1302 | "Set coding systems for the process associated with the current buffer. |
df100398 | 1303 | DECODING is the coding system to be used to decode input from the process, |
358d28fb RS |
1304 | ENCODING is the coding system to be used to encode output to the process. |
1305 | ||
1306 | For a list of possible values of CODING-SYSTEM, use \\[list-coding-systems]." | |
4ed46869 | 1307 | (interactive |
83911021 | 1308 | "zCoding-system for output from the process: \nzCoding-system for input to the process: ") |
4ed46869 KH |
1309 | (let ((proc (get-buffer-process (current-buffer)))) |
1310 | (if (null proc) | |
521d4010 | 1311 | (error "No process") |
df100398 KH |
1312 | (check-coding-system decoding) |
1313 | (check-coding-system encoding) | |
1314 | (set-process-coding-system proc decoding encoding))) | |
4ed46869 KH |
1315 | (force-mode-line-update)) |
1316 | ||
d0b99881 RS |
1317 | (defalias 'set-clipboard-coding-system 'set-selection-coding-system) |
1318 | ||
14915c37 | 1319 | (defun set-selection-coding-system (coding-system) |
8c52d564 | 1320 | "Make CODING-SYSTEM used for communicating with other X clients. |
b25eef20 KH |
1321 | When sending or receiving text via cut_buffer, selection, and clipboard, |
1322 | the text is encoded or decoded by CODING-SYSTEM." | |
a03b3ce1 | 1323 | (interactive "zCoding system for X selection: ") |
b25eef20 | 1324 | (check-coding-system coding-system) |
14915c37 | 1325 | (setq selection-coding-system coding-system)) |
b25eef20 | 1326 | |
e8dd0160 | 1327 | ;; Coding system lastly specified by the command |
a03b3ce1 KH |
1328 | ;; set-next-selection-coding-system. |
1329 | (defvar last-next-selection-coding-system nil) | |
1330 | ||
1331 | (defun set-next-selection-coding-system (coding-system) | |
12504f57 | 1332 | "Use CODING-SYSTEM for next communication with other window system clients. |
a03b3ce1 KH |
1333 | This setting is effective for the next communication only." |
1334 | (interactive | |
1335 | (list (read-coding-system | |
1336 | (if last-next-selection-coding-system | |
7b9dc9af | 1337 | (format "Coding system for the next selection (default %S): " |
a03b3ce1 | 1338 | last-next-selection-coding-system) |
12504f57 | 1339 | "Coding system for the next selection: ") |
a03b3ce1 KH |
1340 | last-next-selection-coding-system))) |
1341 | (if coding-system | |
1342 | (setq last-next-selection-coding-system coding-system) | |
1343 | (setq coding-system last-next-selection-coding-system)) | |
1344 | (check-coding-system coding-system) | |
1345 | ||
1346 | (setq next-selection-coding-system coding-system)) | |
1347 | ||
4ed46869 | 1348 | (defun set-coding-priority (arg) |
521d4010 | 1349 | "Set priority of coding categories according to ARG. |
c1841772 KH |
1350 | ARG is a list of coding categories ordered by priority. |
1351 | ||
1352 | This function is provided for backward compatibility. | |
1353 | Now we have more convenient function `set-coding-system-priority'." | |
5d75f46f KH |
1354 | (apply 'set-coding-system-priority |
1355 | (mapcar #'(lambda (x) (symbol-value x)) arg))) | |
8589dc17 | 1356 | (make-obsolete 'set-coding-priority 'set-coding-system-priority "23.1") |
4ed46869 | 1357 | |
835cbadb EZ |
1358 | ;;; X selections |
1359 | ||
cc926903 | 1360 | (defvar ctext-non-standard-encodings-alist |
e0bd7bb9 | 1361 | '(("big5-0" big5 2 big5) |
6b61353c | 1362 | ("ISO8859-14" iso-8859-14 1 latin-iso8859-14) |
e0bd7bb9 KH |
1363 | ("ISO8859-15" iso-8859-15 1 latin-iso8859-15) |
1364 | ("gbk-0" gbk 2 chinese-gbk)) | |
6b61353c KH |
1365 | "Alist of non-standard encoding names vs the corresponding usages in CTEXT. |
1366 | ||
1367 | It controls how extended segments of a compound text are handled | |
1368 | by the coding system `compound-text-with-extensions'. | |
1369 | ||
1370 | Each element has the form (ENCODING-NAME CODING-SYSTEM N-OCTET CHARSET). | |
1371 | ||
1372 | ENCODING-NAME is an encoding name of an \"extended segments\". | |
1373 | ||
1374 | CODING-SYSTEM is the coding-system to encode (or decode) the | |
1375 | characters into (or from) the extended segment. | |
1376 | ||
1377 | N-OCTET is the number of octets (bytes) that encodes a character | |
1378 | in the segment. It can be 0 (meaning the number of octets per | |
1379 | character is variable), 1, 2, 3, or 4. | |
1380 | ||
1381 | CHARSET is a charater set containing characters that are encoded | |
e0bd7bb9 | 1382 | in the segment. It can be a list of character sets. |
6b61353c KH |
1383 | |
1384 | On decoding CTEXT, all encoding names listed here are recognized. | |
1385 | ||
1386 | On encoding CTEXT, encoding names in the variable | |
1387 | `ctext-non-standard-encodings' (which see) and in the information | |
1388 | listed for the current language environment under the key | |
1389 | `ctext-non-standard-encodings' are used.") | |
1390 | ||
e0bd7bb9 | 1391 | (defvar ctext-non-standard-encodings nil |
6b61353c KH |
1392 | "List of non-standard encoding names used in extended segments of CTEXT. |
1393 | Each element must be one of the names listed in the variable | |
1394 | `ctext-non-standard-encodings-alist' (which see).") | |
cc926903 KH |
1395 | |
1396 | (defvar ctext-non-standard-encodings-regexp | |
1397 | (string-to-multibyte | |
1398 | (concat | |
1399 | ;; For non-standard encodings. | |
1400 | "\\(\e%/[0-4][\200-\377][\200-\377]\\([^\002]+\\)\002\\)" | |
1401 | "\\|" | |
1402 | ;; For UTF-8 encoding. | |
1403 | "\\(\e%G[^\e]*\e%@\\)"))) | |
835cbadb EZ |
1404 | |
1405 | ;; Functions to support "Non-Standard Character Set Encodings" defined | |
6b61353c KH |
1406 | ;; by the COMPOUND-TEXT spec. They also support "The UTF-8 encoding" |
1407 | ;; described in the section 7 of the documentation of COMPOUND-TEXT | |
1408 | ;; distributed with XFree86. | |
5c88a01e | 1409 | |
835cbadb EZ |
1410 | (defun ctext-post-read-conversion (len) |
1411 | "Decode LEN characters encoded as Compound Text with Extended Segments." | |
1894d108 KH |
1412 | ;; We don't need the following because it is expected that this |
1413 | ;; function is mainly used for decoding X selection which is not | |
1414 | ;; that big data. | |
1415 | ;;(buffer-disable-undo) ; minimize consing due to insertions and deletions | |
835cbadb | 1416 | (save-match-data |
cc926903 | 1417 | (save-restriction |
1894d108 | 1418 | (narrow-to-region (point) (+ (point) len)) |
cc926903 | 1419 | (let ((case-fold-search nil) |
cc926903 KH |
1420 | last-coding-system-used |
1421 | pos bytes) | |
cc926903 | 1422 | (decode-coding-region (point-min) (point-max) 'ctext) |
cc926903 KH |
1423 | (while (re-search-forward ctext-non-standard-encodings-regexp |
1424 | nil 'move) | |
1425 | (setq pos (match-beginning 0)) | |
1426 | (if (match-beginning 1) | |
1427 | ;; ESC % / [0-4] M L --ENCODING-NAME-- \002 --BYTES-- | |
e0bd7bb9 KH |
1428 | (let* ((M (multibyte-char-to-unibyte (char-after (+ pos 4)))) |
1429 | (L (multibyte-char-to-unibyte (char-after (+ pos 5)))) | |
cc926903 | 1430 | (encoding (match-string 2)) |
9857367f | 1431 | (encoding-info (assoc-string |
6b61353c | 1432 | encoding |
c12bc1fb | 1433 | ctext-non-standard-encodings-alist t)) |
6b61353c KH |
1434 | (coding (if encoding-info |
1435 | (nth 1 encoding-info) | |
1436 | (setq encoding (intern (downcase encoding))) | |
1437 | (and (coding-system-p encoding) | |
1438 | encoding)))) | |
cc926903 KH |
1439 | (setq bytes (- (+ (* (- M 128) 128) (- L 128)) |
1440 | (- (point) (+ pos 6)))) | |
1441 | (when coding | |
1442 | (delete-region pos (point)) | |
1443 | (forward-char bytes) | |
1444 | (decode-coding-region (- (point) bytes) (point) coding))) | |
1445 | ;; ESC % G --UTF-8-BYTES-- ESC % @ | |
6b61353c KH |
1446 | (delete-char -3) |
1447 | (delete-region pos (+ pos 3)) | |
1448 | (decode-coding-region pos (point) 'utf-8)))) | |
cc926903 KH |
1449 | (goto-char (point-min)) |
1450 | (- (point-max) (point))))) | |
835cbadb | 1451 | |
e0bd7bb9 KH |
1452 | ;; Return an alist of CHARSET vs CTEXT-USAGE-INFO generated from |
1453 | ;; `ctext-non-standard-encodings' and a list specified by the key | |
1454 | ;; `ctext-non-standard-encodings' for the currrent language | |
1455 | ;; environment. CTEXT-USAGE-INFO is one of the element of | |
1456 | ;; `ctext-non-standard-encodings-alist' or nil. In the former case, a | |
1457 | ;; character in CHARSET is encoded using extended segment. In the | |
1458 | ;; latter case, a character in CHARSET is encoded using normal ISO2022 | |
1459 | ;; designation sequence. If a character is not in any of CHARSETs, it | |
1460 | ;; is encoded using UTF-8 encoding extention. | |
6b61353c KH |
1461 | |
1462 | (defun ctext-non-standard-encodings-table () | |
e0bd7bb9 | 1463 | (let (table) |
ff558463 KH |
1464 | ;; Setup charsets specified by the key |
1465 | ;; `ctext-non-standard-encodings' for the current language | |
1466 | ;; environment and in `ctext-non-standard-encodings'. | |
e0bd7bb9 | 1467 | (dolist (encoding (append |
6b61353c | 1468 | (get-language-info current-language-environment |
ff558463 KH |
1469 | 'ctext-non-standard-encodings) |
1470 | ctext-non-standard-encodings)) | |
6b61353c KH |
1471 | (let* ((slot (assoc encoding ctext-non-standard-encodings-alist)) |
1472 | (charset (nth 3 slot))) | |
e0bd7bb9 KH |
1473 | (if (charsetp charset) |
1474 | (push (cons charset slot) table) | |
1475 | (dolist (cs charset) | |
1476 | (push (cons cs slot) table))))) | |
1477 | ||
1478 | ;; Next prepend charsets for ISO2022 designation sequence. | |
1479 | (dolist (charset charset-list) | |
1480 | (let ((final (plist-get (charset-plist charset) :iso-final-char))) | |
1481 | (if (and (integerp final) | |
1482 | (>= final #x40) (<= final #x7e) | |
1483 | ;; Exclude ascii and chinese-cns11643-X. | |
1484 | (not (eq charset 'ascii)) | |
1485 | (not (string-match "cns11643" (symbol-name charset)))) | |
1486 | (push (cons charset nil) table)))) | |
ff558463 KH |
1487 | |
1488 | ;; Returned reversed list so that the charsets specified by the | |
1489 | ;; key `ctext-non-standard-encodings' for the current language | |
1490 | ;; have the highest priority. | |
1491 | (nreverse table))) | |
835cbadb EZ |
1492 | |
1493 | (defun ctext-pre-write-conversion (from to) | |
5dde3c71 EZ |
1494 | "Encode characters between FROM and TO as Compound Text w/Extended Segments. |
1495 | ||
1496 | If FROM is a string, or if the current buffer is not the one set up for us | |
cc926903 | 1497 | by encode-coding-string, generate a new temp buffer, insert the |
5dde3c71 | 1498 | text, and convert it in the temporary buffer. Otherwise, convert in-place." |
835cbadb | 1499 | (save-match-data |
cc926903 | 1500 | ;; Setup a working buffer if necessary. |
f1beb0e0 KH |
1501 | (when (stringp from) |
1502 | (set-buffer (generate-new-buffer " *temp")) | |
1503 | (set-buffer-multibyte (multibyte-string-p from)) | |
1504 | (insert from)) | |
cc926903 KH |
1505 | |
1506 | ;; Now we can encode the whole buffer. | |
6b61353c | 1507 | (let ((encoding-table (ctext-non-standard-encodings-table)) |
cc926903 | 1508 | last-coding-system-used |
6b61353c | 1509 | last-pos last-encoding-info |
e0bd7bb9 | 1510 | encoding-info end-pos ch) |
6b61353c KH |
1511 | (goto-char (setq last-pos (point-min))) |
1512 | (setq end-pos (point-marker)) | |
1513 | (while (re-search-forward "[^\000-\177]+" nil t) | |
1514 | ;; Found a sequence of non-ASCII characters. | |
1515 | (setq last-pos (match-beginning 0) | |
e0bd7bb9 KH |
1516 | ch (char-after last-pos) |
1517 | last-encoding-info (catch 'tag | |
1518 | (dolist (elt encoding-table) | |
1519 | (if (encode-char ch (car elt)) | |
1520 | (throw 'tag (cdr elt)))) | |
1521 | 'utf-8)) | |
6b61353c KH |
1522 | (set-marker end-pos (match-end 0)) |
1523 | (goto-char (1+ last-pos)) | |
1524 | (catch 'tag | |
1525 | (while t | |
1526 | (setq encoding-info | |
1527 | (if (< (point) end-pos) | |
e0bd7bb9 KH |
1528 | (catch 'tag |
1529 | (setq ch (following-char)) | |
1530 | (dolist (elt encoding-table) | |
1531 | (if (encode-char ch (car elt)) | |
1532 | (throw 'tag (cdr elt)))) | |
1533 | 'utf-8))) | |
6b61353c KH |
1534 | (unless (eq last-encoding-info encoding-info) |
1535 | (cond ((consp last-encoding-info) | |
1536 | ;; Encode the previous range using an extended | |
1537 | ;; segment. | |
1538 | (let ((encoding-name (car last-encoding-info)) | |
1539 | (coding-system (nth 1 last-encoding-info)) | |
1540 | (noctets (nth 2 last-encoding-info)) | |
1541 | len) | |
1542 | (encode-coding-region last-pos (point) coding-system) | |
1543 | (setq len (+ (length encoding-name) 1 | |
1544 | (- (point) last-pos))) | |
f04781a9 | 1545 | ;; According to the spec of CTEXT, it is not |
5503f67d KH |
1546 | ;; necessary to produce this extra designation |
1547 | ;; sequence, but some buggy application | |
1548 | ;; (e.g. crxvt-gb) requires it. | |
f04781a9 | 1549 | (insert "\e(B") |
6b61353c KH |
1550 | (save-excursion |
1551 | (goto-char last-pos) | |
e0bd7bb9 KH |
1552 | (insert (format "\e%%/%d" noctets)) |
1553 | (insert-byte (+ (/ len 128) 128) 1) | |
1554 | (insert-byte (+ (% len 128) 128) 1) | |
ff558463 KH |
1555 | (insert encoding-name) |
1556 | (insert 2)))) | |
6b61353c KH |
1557 | ((eq last-encoding-info 'utf-8) |
1558 | ;; Encode the previous range using UTF-8 encoding | |
1559 | ;; extention. | |
1560 | (encode-coding-region last-pos (point) 'mule-utf-8) | |
1561 | (save-excursion | |
1562 | (goto-char last-pos) | |
1563 | (insert "\e%G")) | |
1564 | (insert "\e%@"))) | |
1565 | (setq last-pos (point) | |
1566 | last-encoding-info encoding-info)) | |
1567 | (if (< (point) end-pos) | |
1568 | (forward-char 1) | |
1569 | (throw 'tag nil))))) | |
1570 | (set-marker end-pos nil) | |
cc926903 | 1571 | (goto-char (point-min)))) |
5dde3c71 | 1572 | ;; Must return nil, as build_annotations_2 expects that. |
835cbadb EZ |
1573 | nil) |
1574 | ||
4ed46869 KH |
1575 | ;;; FILE I/O |
1576 | ||
e76938e7 | 1577 | (defcustom auto-coding-alist |
3a6a5981 CY |
1578 | ;; .exe and .EXE are added to support archive-mode looking at DOS |
1579 | ;; self-extracting exe archives. | |
a3862583 SM |
1580 | '(("\\.\\(\ |
1581 | arc\\|zip\\|lzh\\|lha\\|zoo\\|[jew]ar\\|xpi\\|exe\\|rar\\|\ | |
1582 | ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|EXE\\|RAR\\)\\'" . no-conversion) | |
86167621 | 1583 | ("\\.\\(sx[dmicw]\\|odt\\|tar\\|tgz\\)\\'" . no-conversion) |
6caef2da | 1584 | ("\\.\\(gz\\|Z\\|bz\\|bz2\\|gpg\\)\\'" . no-conversion) |
ba40634b | 1585 | ("\\.\\(jpe?g\\|png\\|gif\\|tiff?\\|p[bpgn]m\\)\\'" . no-conversion) |
6f37a576 | 1586 | ("\\.pdf\\'" . no-conversion) |
45885400 | 1587 | ("/#[^/]+#\\'" . emacs-mule)) |
835f49b8 KH |
1588 | "Alist of filename patterns vs corresponding coding systems. |
1589 | Each element looks like (REGEXP . CODING-SYSTEM). | |
558b0c86 | 1590 | A file whose name matches REGEXP is decoded by CODING-SYSTEM on reading. |
835f49b8 | 1591 | |
7fed493a RS |
1592 | The settings in this alist take priority over `coding:' tags |
1593 | in the file (see the function `set-auto-coding') | |
e76938e7 DL |
1594 | and the contents of `file-coding-system-alist'." |
1595 | :group 'files | |
1596 | :group 'mule | |
1597 | :type '(repeat (cons (regexp :tag "File name regexp") | |
1598 | (symbol :tag "Coding system")))) | |
835f49b8 | 1599 | |
502522b2 | 1600 | (defcustom auto-coding-regexp-alist |
4e4a5bca | 1601 | '(("^BABYL OPTIONS:[ \t]*-\\*-[ \t]*rmail[ \t]*-\\*-" . no-conversion) |
dc5c3489 KH |
1602 | ("\\`\xFE\xFF" . utf-16be-with-signature) |
1603 | ("\\`\xFF\xFE" . utf-16le-with-signature) | |
292203c9 | 1604 | ("\\`\xEF\xBB\xBF" . utf-8) |
d8d9feaf | 1605 | ("\\`;ELC\024\0\0\0" . emacs-mule)) ; Emacs 20-compiled |
502522b2 GM |
1606 | "Alist of patterns vs corresponding coding systems. |
1607 | Each element looks like (REGEXP . CODING-SYSTEM). | |
1608 | A file whose first bytes match REGEXP is decoded by CODING-SYSTEM on reading. | |
1609 | ||
1610 | The settings in this alist take priority over `coding:' tags | |
1611 | in the file (see the function `set-auto-coding') | |
1612 | and the contents of `file-coding-system-alist'." | |
1613 | :group 'files | |
1614 | :group 'mule | |
1615 | :type '(repeat (cons (regexp :tag "Regexp") | |
1616 | (symbol :tag "Coding system")))) | |
1617 | ||
0814ca04 KH |
1618 | (defun auto-coding-regexp-alist-lookup (from to) |
1619 | "Lookup `auto-coding-regexp-alist' for the contents of the current buffer. | |
1620 | The value is a coding system is specified for the region FROM and TO, | |
1621 | or nil." | |
1622 | (save-excursion | |
1623 | (goto-char from) | |
1624 | (let ((alist auto-coding-regexp-alist) | |
1625 | coding-system) | |
1626 | (while (and alist (not coding-system)) | |
1627 | (let ((regexp (car (car alist)))) | |
1628 | (if enable-multibyte-characters | |
1629 | (setq regexp (string-to-multibyte regexp))) | |
1630 | (if (re-search-forward regexp to t) | |
1631 | (setq coding-system (cdr (car alist))) | |
1632 | (setq alist (cdr alist))))) | |
1633 | coding-system))) | |
1634 | ||
d9f6dfe6 | 1635 | ;; See the bottom of this file for built-in auto coding functions. |
447404a3 CW |
1636 | (defcustom auto-coding-functions '(sgml-xml-auto-coding-function |
1637 | sgml-html-meta-auto-coding-function) | |
d9f6dfe6 CW |
1638 | "A list of functions which attempt to determine a coding system. |
1639 | ||
66643502 RS |
1640 | Each function in this list should be written to operate on the |
1641 | current buffer, but should not modify it in any way. The buffer | |
1642 | will contain undecoded text of parts of the file. Each function | |
1643 | should take one argument, SIZE, which says how many | |
1644 | characters (starting from point) it should look at. | |
1645 | ||
1646 | If one of these functions succeeds in determining a coding | |
1647 | system, it should return that coding system. Otherwise, it | |
1648 | should return nil. | |
1649 | ||
1650 | If a file has a `coding:' tag, that takes precedence over these | |
1651 | functions, so they won't be called at all." | |
d9f6dfe6 CW |
1652 | :group 'files |
1653 | :group 'mule | |
1654 | :type '(repeat function)) | |
1655 | ||
1c4cc63a KH |
1656 | (defvar set-auto-coding-for-load nil |
1657 | "Non-nil means look for `load-coding' property instead of `coding'. | |
1658 | This is used for loading and byte-compiling Emacs Lisp files.") | |
1659 | ||
8a592131 RS |
1660 | (defun auto-coding-alist-lookup (filename) |
1661 | "Return the coding system specified by `auto-coding-alist' for FILENAME." | |
1662 | (let ((alist auto-coding-alist) | |
c60ee5e7 | 1663 | (case-fold-search (memq system-type '(vax-vms windows-nt ms-dos cygwin))) |
8a592131 RS |
1664 | coding-system) |
1665 | (while (and alist (not coding-system)) | |
1666 | (if (string-match (car (car alist)) filename) | |
1667 | (setq coding-system (cdr (car alist))) | |
1668 | (setq alist (cdr alist)))) | |
1669 | coding-system)) | |
1670 | ||
09e5712d KH |
1671 | (put 'enable-character-translation 'permanent-local t) |
1672 | (put 'enable-character-translation 'safe-local-variable 'booleanp) | |
1673 | ||
e9b01d1f KH |
1674 | (defun find-auto-coding (filename size) |
1675 | "Find a coding system for a file FILENAME of which SIZE bytes follow point. | |
1c4cc63a KH |
1676 | These bytes should include at least the first 1k of the file |
1677 | and the last 3k of the file, but the middle may be omitted. | |
63561304 | 1678 | |
d21ba5e0 DL |
1679 | The function checks FILENAME against the variable `auto-coding-alist'. |
1680 | If FILENAME doesn't match any entries in the variable, it checks the | |
502522b2 | 1681 | contents of the current buffer following point against |
447404a3 | 1682 | `auto-coding-regexp-alist'. If no match is found, it checks for a |
502522b2 | 1683 | `coding:' tag in the first one or two lines following point. If no |
d21ba5e0 | 1684 | `coding:' tag is found, it checks any local variables list in the last |
447404a3 | 1685 | 3K bytes out of the SIZE bytes. Finally, if none of these methods |
d21ba5e0 DL |
1686 | succeed, it checks to see if any function in `auto-coding-functions' |
1687 | gives a match. | |
63561304 | 1688 | |
e9b01d1f KH |
1689 | If a coding system is specifed, the return value is a |
1690 | cons (CODING . SOURCE), where CODING is the specified coding | |
1691 | system and SOURCE is a symbol `auto-coding-alist', | |
1692 | `auto-coding-regexp-alist', `coding:', or `auto-coding-functions' | |
1693 | indicating by what CODING is specified. Note that the validity | |
382f8b5c | 1694 | of CODING is not checked; it's the caller's responsibility to check it. |
e9b01d1f | 1695 | |
0814ca04 | 1696 | If nothing is specified, the return value is nil." |
e9b01d1f KH |
1697 | (or (let ((coding-system (auto-coding-alist-lookup filename))) |
1698 | (if coding-system | |
1699 | (cons coding-system 'auto-coding-alist))) | |
447404a3 | 1700 | ;; Try using `auto-coding-regexp-alist'. |
0814ca04 KH |
1701 | (let ((coding-system (auto-coding-regexp-alist-lookup (point) |
1702 | (+ (point) size)))) | |
1703 | (if coding-system | |
1704 | (cons coding-system 'auto-coding-regexp-alist))) | |
502522b2 GM |
1705 | (let* ((case-fold-search t) |
1706 | (head-start (point)) | |
1707 | (head-end (+ head-start (min size 1024))) | |
1708 | (tail-start (+ head-start (max (- size 3072) 0))) | |
1709 | (tail-end (+ head-start size)) | |
09e5712d | 1710 | coding-system head-found tail-found pos char-trans) |
502522b2 GM |
1711 | ;; Try a short cut by searching for the string "coding:" |
1712 | ;; and for "unibyte:" at the head and tail of SIZE bytes. | |
1713 | (setq head-found (or (search-forward "coding:" head-end t) | |
09e5712d | 1714 | (search-forward "unibyte:" head-end t) |
5dd1c041 | 1715 | (search-forward "enable-character-translation:" |
36e02850 | 1716 | head-end t))) |
502522b2 GM |
1717 | (if (and head-found (> head-found tail-start)) |
1718 | ;; Head and tail are overlapped. | |
1719 | (setq tail-found head-found) | |
1720 | (goto-char tail-start) | |
1721 | (setq tail-found (or (search-forward "coding:" tail-end t) | |
09e5712d KH |
1722 | (search-forward "unibyte:" tail-end t) |
1723 | (search-forward "enable-character-translation:" | |
1724 | tail-end t)))) | |
502522b2 GM |
1725 | |
1726 | ;; At first check the head. | |
1727 | (when head-found | |
1728 | (goto-char head-start) | |
6b66d028 RS |
1729 | (setq head-end (set-auto-mode-1)) |
1730 | (setq head-start (point)) | |
1d8e9a7c | 1731 | (when (and head-end (< head-found head-end)) |
835f49b8 | 1732 | (goto-char head-start) |
502522b2 GM |
1733 | (when (and set-auto-coding-for-load |
1734 | (re-search-forward | |
6b66d028 | 1735 | "\\(.*;\\)?[ \t]*unibyte:[ \t]*\\([^ ;]+\\)" |
502522b2 GM |
1736 | head-end t)) |
1737 | (setq coding-system 'raw-text)) | |
1738 | (when (and (not coding-system) | |
1739 | (re-search-forward | |
6b66d028 | 1740 | "\\(.*;\\)?[ \t]*coding:[ \t]*\\([^ ;]+\\)" |
502522b2 | 1741 | head-end t)) |
09e5712d KH |
1742 | (setq coding-system (intern (match-string 2)))) |
1743 | (when (re-search-forward | |
36e02850 | 1744 | "\\(.*;\\)?[ \t]*enable-character-translation:[ \t]*\\([^ ;]+\\)" |
09e5712d | 1745 | head-end t) |
36e02850 | 1746 | (setq char-trans (match-string 2))))) |
502522b2 GM |
1747 | |
1748 | ;; If no coding: tag in the head, check the tail. | |
6b61353c KH |
1749 | ;; Here we must pay attention to the case that the end-of-line |
1750 | ;; is just "\r" and we can't use "^" nor "$" in regexp. | |
09e5712d | 1751 | (when (and tail-found (or (not coding-system) (not char-trans))) |
502522b2 | 1752 | (goto-char tail-start) |
df94067b | 1753 | (re-search-forward "[\r\n]\^L" tail-end t) |
502522b2 | 1754 | (if (re-search-forward |
9857367f | 1755 | "[\r\n]\\([^[\r\n]*\\)[ \t]*Local Variables:[ \t]*\\([^\r\n]*\\)[\r\n]" |
6b61353c KH |
1756 | tail-end t) |
1757 | ;; The prefix is what comes before "local variables:" in its | |
1758 | ;; line. The suffix is what comes after "local variables:" | |
502522b2 GM |
1759 | ;; in its line. |
1760 | (let* ((prefix (regexp-quote (match-string 1))) | |
1761 | (suffix (regexp-quote (match-string 2))) | |
1762 | (re-coding | |
1763 | (concat | |
6b61353c | 1764 | "[\r\n]" prefix |
cfe98f50 GM |
1765 | ;; N.B. without the \n below, the regexp can |
1766 | ;; eat newlines. | |
6b61353c KH |
1767 | "[ \t]*coding[ \t]*:[ \t]*\\([^ \t\r\n]+\\)[ \t]*" |
1768 | suffix "[\r\n]")) | |
502522b2 GM |
1769 | (re-unibyte |
1770 | (concat | |
6b61353c KH |
1771 | "[\r\n]" prefix |
1772 | "[ \t]*unibyte[ \t]*:[ \t]*\\([^ \t\r\n]+\\)[ \t]*" | |
1773 | suffix "[\r\n]")) | |
09e5712d KH |
1774 | (re-char-trans |
1775 | (concat | |
1776 | "[\r\n]" prefix | |
36e02850 | 1777 | "[ \t]*enable-character-translation[ \t]*:[ \t]*\\([^ \t\r\n]+\\)[ \t]*" |
09e5712d | 1778 | suffix "[\r\n]")) |
502522b2 | 1779 | (re-end |
9857367f | 1780 | (concat "[\r\n]" prefix "[ \t]*End *:[ \t]*" suffix |
6b61353c KH |
1781 | "[\r\n]?")) |
1782 | (pos (1- (point)))) | |
1783 | (forward-char -1) ; skip back \r or \n. | |
502522b2 GM |
1784 | (re-search-forward re-end tail-end 'move) |
1785 | (setq tail-end (point)) | |
1786 | (goto-char pos) | |
1787 | (when (and set-auto-coding-for-load | |
1788 | (re-search-forward re-unibyte tail-end t)) | |
1789 | (setq coding-system 'raw-text)) | |
1790 | (when (and (not coding-system) | |
1791 | (re-search-forward re-coding tail-end t)) | |
09e5712d KH |
1792 | (setq coding-system (intern (match-string 1)))) |
1793 | (when (and (not char-trans) | |
1794 | (re-search-forward re-char-trans tail-end t)) | |
36e02850 | 1795 | (setq char-trans (match-string 1)))))) |
09e5712d KH |
1796 | (if coding-system |
1797 | ;; If the coding-system name ends with "!", remove it and | |
1798 | ;; set char-trans to "nil". | |
1799 | (let ((name (symbol-name coding-system))) | |
1800 | (if (= (aref name (1- (length name))) ?!) | |
1801 | (setq coding-system (intern (substring name 0 -1)) | |
1802 | char-trans "nil")))) | |
1803 | (when (and char-trans | |
1804 | (not (setq char-trans (intern char-trans)))) | |
1805 | (make-local-variable 'enable-character-translation) | |
1806 | (setq enable-character-translation nil)) | |
e9b01d1f KH |
1807 | (if coding-system |
1808 | (cons coding-system :coding))) | |
447404a3 CW |
1809 | ;; Finally, try all the `auto-coding-functions'. |
1810 | (let ((funcs auto-coding-functions) | |
1811 | (coding-system nil)) | |
1812 | (while (and funcs (not coding-system)) | |
1813 | (setq coding-system (condition-case e | |
1814 | (save-excursion | |
1815 | (goto-char (point-min)) | |
1816 | (funcall (pop funcs) size)) | |
1817 | (error nil)))) | |
e9b01d1f KH |
1818 | (if coding-system |
1819 | (cons coding-system 'auto-coding-functions))))) | |
1820 | ||
1821 | (defun set-auto-coding (filename size) | |
1822 | "Return coding system for a file FILENAME of which SIZE bytes follow point. | |
1823 | See `find-auto-coding' for how the coding system is found. | |
0814ca04 KH |
1824 | Return nil if an invalid coding system is found. |
1825 | ||
1826 | The variable `set-auto-coding-function' (which see) is set to this | |
1827 | function by default." | |
e9b01d1f KH |
1828 | (let ((found (find-auto-coding filename size))) |
1829 | (if (and found (coding-system-p (car found))) | |
1830 | (car found)))) | |
63561304 KH |
1831 | |
1832 | (setq set-auto-coding-function 'set-auto-coding) | |
87aba788 | 1833 | |
0436cc1b KH |
1834 | ;; This variable is set in these two cases: |
1835 | ;; (1) A file is read by a coding system specified explicitly. | |
1836 | ;; after-insert-file-set-coding sets this value to | |
1837 | ;; coding-system-for-read. | |
1838 | ;; (2) A buffer is saved. | |
1839 | ;; After writing, basic-save-buffer-1 sets this value to | |
1840 | ;; last-coding-system-used. | |
1841 | ;; This variable is used for decoding in revert-buffer. | |
e205f8c1 | 1842 | (defvar buffer-file-coding-system-explicit nil |
0436cc1b KH |
1843 | "The file coding system explicitly specified for the current buffer. |
1844 | Internal use only.") | |
e205f8c1 KH |
1845 | (make-variable-buffer-local 'buffer-file-coding-system-explicit) |
1846 | (put 'buffer-file-coding-system-explicit 'permanent-local t) | |
0436cc1b KH |
1847 | |
1848 | (defun after-insert-file-set-coding (inserted &optional visit) | |
872a0a6f RS |
1849 | "Set `buffer-file-coding-system' of current buffer after text is inserted. |
1850 | INSERTED is the number of characters that were inserted, as figured | |
1851 | in the situation before this function. Return the number of characters | |
1852 | inserted, as figured in the situation after. The two numbers can be | |
0436cc1b KH |
1853 | different if the buffer has become unibyte. |
1854 | The optional second arg VISIT non-nil means that we are visiting a file." | |
1855 | (if (and visit | |
1856 | coding-system-for-read | |
1857 | (not (eq coding-system-for-read 'auto-save-coding))) | |
e205f8c1 | 1858 | (setq buffer-file-coding-system-explicit coding-system-for-read)) |
4ed46869 KH |
1859 | (if last-coding-system-used |
1860 | (let ((coding-system | |
14839656 | 1861 | (find-new-buffer-file-coding-system last-coding-system-used))) |
0269ddfb | 1862 | (when coding-system |
14b3fa07 RS |
1863 | ;; Tell set-buffer-file-coding-system not to mark the file |
1864 | ;; as modified; we just read it, and it's supposed to be unmodified. | |
1865 | ;; Marking it modified would try to lock it, which would | |
1866 | ;; check the modtime, and we don't want to do that again now. | |
14839656 | 1867 | (set-buffer-file-coding-system coding-system t t)))) |
d0c26c63 | 1868 | inserted) |
4ed46869 | 1869 | |
8057896b | 1870 | ;; The coding-spec and eol-type of coding-system returned is decided |
4ed46869 KH |
1871 | ;; independently in the following order. |
1872 | ;; 1. That of buffer-file-coding-system locally bound. | |
1873 | ;; 2. That of CODING. | |
1874 | ||
1875 | (defun find-new-buffer-file-coding-system (coding) | |
1876 | "Return a coding system for a buffer when a file of CODING is inserted. | |
a73a8c89 KH |
1877 | The local variable `buffer-file-coding-system' of the current buffer |
1878 | is set to the returned value. | |
509064c5 | 1879 | Return nil if there's no need to set `buffer-file-coding-system'." |
4ed46869 | 1880 | (let (local-coding local-eol |
b685f8d6 | 1881 | found-coding found-eol |
4ed46869 KH |
1882 | new-coding new-eol) |
1883 | (if (null coding) | |
1884 | ;; Nothing found about coding. | |
1885 | nil | |
1886 | ||
b685f8d6 RS |
1887 | ;; Get information of `buffer-file-coding-system' in LOCAL-EOL |
1888 | ;; and LOCAL-CODING. | |
1889 | (setq local-eol (coding-system-eol-type buffer-file-coding-system)) | |
1890 | (if (null (numberp local-eol)) | |
1891 | ;; But eol-type is not yet set. | |
1892 | (setq local-eol nil)) | |
0269ddfb | 1893 | (if (and buffer-file-coding-system |
c1841772 KH |
1894 | (not (eq (coding-system-type buffer-file-coding-system) |
1895 | 'undecided))) | |
0269ddfb | 1896 | (setq local-coding (coding-system-base buffer-file-coding-system))) |
b685f8d6 RS |
1897 | |
1898 | (if (and (local-variable-p 'buffer-file-coding-system) | |
1899 | local-eol local-coding) | |
4ed46869 KH |
1900 | ;; The current buffer has already set full coding-system, we |
1901 | ;; had better not change it. | |
1902 | nil | |
1903 | ||
8057896b | 1904 | (setq found-eol (coding-system-eol-type coding)) |
4ed46869 | 1905 | (if (null (numberp found-eol)) |
be02cd54 EZ |
1906 | ;; But eol-type is not found. |
1907 | ;; If EOL conversions are inhibited, force unix eol-type. | |
1908 | (setq found-eol (if inhibit-eol-conversion 0))) | |
c1841772 | 1909 | (setq found-coding (coding-system-base coding)) |
c76b5c99 KH |
1910 | |
1911 | (if (and (not found-eol) (eq found-coding 'undecided)) | |
1912 | ;; No valid coding information found. | |
1913 | nil | |
1914 | ||
1915 | ;; Some coding information (eol or text) found. | |
1916 | ||
1917 | ;; The local setting takes precedence over the found one. | |
1918 | (setq new-coding (if (local-variable-p 'buffer-file-coding-system) | |
1919 | (or local-coding found-coding) | |
1920 | (or found-coding local-coding))) | |
1921 | (setq new-eol (if (local-variable-p 'buffer-file-coding-system) | |
1922 | (or local-eol found-eol) | |
1923 | (or found-eol local-eol))) | |
1924 | ||
1925 | (let ((eol-type (coding-system-eol-type new-coding))) | |
1926 | (if (and (numberp new-eol) (vectorp eol-type)) | |
1927 | (aref eol-type new-eol) | |
1928 | new-coding))))))) | |
4ed46869 | 1929 | |
fe831d33 GV |
1930 | (defun modify-coding-system-alist (target-type regexp coding-system) |
1931 | "Modify one of look up tables for finding a coding system on I/O operation. | |
8c453b46 RS |
1932 | There are three of such tables, `file-coding-system-alist', |
1933 | `process-coding-system-alist', and `network-coding-system-alist'. | |
fe831d33 GV |
1934 | |
1935 | TARGET-TYPE specifies which of them to modify. | |
8c453b46 RS |
1936 | If it is `file', it affects `file-coding-system-alist' (which see). |
1937 | If it is `process', it affects `process-coding-system-alist' (which see). | |
e8dd0160 | 1938 | If it is `network', it affects `network-coding-system-alist' (which see). |
fe831d33 GV |
1939 | |
1940 | REGEXP is a regular expression matching a target of I/O operation. | |
1941 | The target is a file name if TARGET-TYPE is `file', a program name if | |
1942 | TARGET-TYPE is `process', or a network service name or a port number | |
1943 | to connect to if TARGET-TYPE is `network'. | |
1944 | ||
1945 | CODING-SYSTEM is a coding system to perform code conversion on the I/O | |
8c453b46 RS |
1946 | operation, or a cons cell (DECODING . ENCODING) specifying the coding systems |
1947 | for decoding and encoding respectively, | |
1948 | or a function symbol which, when called, returns such a cons cell." | |
fe831d33 GV |
1949 | (or (memq target-type '(file process network)) |
1950 | (error "Invalid target type: %s" target-type)) | |
1951 | (or (stringp regexp) | |
1952 | (and (eq target-type 'network) (integerp regexp)) | |
1953 | (error "Invalid regular expression: %s" regexp)) | |
1954 | (if (symbolp coding-system) | |
1955 | (if (not (fboundp coding-system)) | |
1956 | (progn | |
1957 | (check-coding-system coding-system) | |
1958 | (setq coding-system (cons coding-system coding-system)))) | |
1959 | (check-coding-system (car coding-system)) | |
1960 | (check-coding-system (cdr coding-system))) | |
1961 | (cond ((eq target-type 'file) | |
1962 | (let ((slot (assoc regexp file-coding-system-alist))) | |
1963 | (if slot | |
1964 | (setcdr slot coding-system) | |
1965 | (setq file-coding-system-alist | |
1966 | (cons (cons regexp coding-system) | |
1967 | file-coding-system-alist))))) | |
1968 | ((eq target-type 'process) | |
1969 | (let ((slot (assoc regexp process-coding-system-alist))) | |
1970 | (if slot | |
1971 | (setcdr slot coding-system) | |
1972 | (setq process-coding-system-alist | |
1973 | (cons (cons regexp coding-system) | |
1974 | process-coding-system-alist))))) | |
1975 | (t | |
1976 | (let ((slot (assoc regexp network-coding-system-alist))) | |
1977 | (if slot | |
1978 | (setcdr slot coding-system) | |
1979 | (setq network-coding-system-alist | |
1980 | (cons (cons regexp coding-system) | |
1981 | network-coding-system-alist))))))) | |
1982 | ||
db046b7d KH |
1983 | (defun decode-coding-inserted-region (from to filename |
1984 | &optional visit beg end replace) | |
f29387e8 | 1985 | "Decode the region between FROM and TO as if it is read from file FILENAME. |
9c848353 | 1986 | The idea is that the text between FROM and TO was just inserted somehow. |
f29387e8 | 1987 | Optional arguments VISIT, BEG, END, and REPLACE are the same as those |
9c848353 RS |
1988 | of the function `insert-file-contents'. |
1989 | Part of the job of this function is setting `buffer-undo-list' appropriately." | |
f29387e8 KH |
1990 | (save-excursion |
1991 | (save-restriction | |
9c848353 RS |
1992 | (let ((coding coding-system-for-read) |
1993 | undo-list-saved) | |
1994 | (if visit | |
1995 | ;; Temporarily turn off undo recording, if we're decoding the | |
1996 | ;; text of a visited file. | |
1997 | (setq buffer-undo-list t) | |
1998 | ;; Otherwise, if we can recognize the undo elt for the insertion, | |
1999 | ;; remove it and get ready to replace it later. | |
2000 | ;; In the mean time, turn off undo recording. | |
bf247b6e | 2001 | (let ((last (car-safe buffer-undo-list))) |
9c848353 RS |
2002 | (if (and (consp last) (eql (car last) from) (eql (cdr last) to)) |
2003 | (setq undo-list-saved (cdr buffer-undo-list) | |
2004 | buffer-undo-list t)))) | |
2005 | (narrow-to-region from to) | |
2006 | (goto-char (point-min)) | |
f29387e8 KH |
2007 | (or coding |
2008 | (setq coding (funcall set-auto-coding-function | |
2009 | filename (- (point-max) (point-min))))) | |
2010 | (or coding | |
6b61353c KH |
2011 | (setq coding (car (find-operation-coding-system |
2012 | 'insert-file-contents | |
47a355de KH |
2013 | (cons filename (current-buffer)) |
2014 | visit beg end replace)))) | |
f29387e8 KH |
2015 | (if (coding-system-p coding) |
2016 | (or enable-multibyte-characters | |
2017 | (setq coding | |
2018 | (coding-system-change-text-conversion coding 'raw-text))) | |
2019 | (setq coding nil)) | |
2020 | (if coding | |
b12e19b2 | 2021 | (decode-coding-region (point-min) (point-max) coding) |
9c848353 RS |
2022 | (setq last-coding-system-used coding)) |
2023 | ;; If we're decoding the text of a visited file, | |
2024 | ;; the undo list should start out empty. | |
2025 | (if visit | |
2026 | (setq buffer-undo-list nil) | |
2027 | ;; If we decided to replace the undo entry for the insertion, | |
2028 | ;; do so now. | |
2029 | (if undo-list-saved | |
2030 | (setq buffer-undo-list | |
2031 | (cons (cons from (point-max)) undo-list-saved)))))))) | |
f29387e8 | 2032 | |
27a91cf7 KH |
2033 | (defun recode-region (start end new-coding coding) |
2034 | "Re-decode the region (previously decoded by CODING) by NEW-CODING." | |
2035 | (interactive | |
2036 | (list (region-beginning) (region-end) | |
2037 | (read-coding-system "Text was really in: ") | |
2038 | (let ((coding (or buffer-file-coding-system last-coding-system-used))) | |
2039 | (read-coding-system | |
2040 | (concat "But was interpreted as" | |
2041 | (if coding (format " (default %S): " coding) ": ")) | |
2042 | coding)))) | |
2043 | (or (and new-coding coding) | |
2044 | (error "Coding system not specified")) | |
2045 | ;; Check it before we encode the region. | |
2046 | (check-coding-system new-coding) | |
2047 | (save-restriction | |
2048 | (narrow-to-region start end) | |
2049 | (encode-coding-region (point-min) (point-max) coding) | |
2050 | (decode-coding-region (point-min) (point-max) new-coding))) | |
f29387e8 | 2051 | |
b25eef20 | 2052 | (defun make-translation-table (&rest args) |
a284eea3 | 2053 | "Make a translation table from arguments. |
d38b07f9 | 2054 | A translation table is a char table intended for character |
a284eea3 DL |
2055 | translation in CCL programs. |
2056 | ||
d38b07f9 | 2057 | Each argument is a list of elements of the form (FROM . TO), where FROM |
a284eea3 | 2058 | is a character to be translated to TO. |
13d5617d | 2059 | |
4e003d37 KH |
2060 | The arguments and forms in each argument are processed in the given |
2061 | order, and if a previous form already translates TO to some other | |
2062 | character, say TO-ALT, FROM is also translated to TO-ALT." | |
f967223b | 2063 | (let ((table (make-char-table 'translation-table)) |
a73a8c89 | 2064 | revlist) |
5d75f46f KH |
2065 | (dolist (elts args) |
2066 | (dolist (elt elts) | |
2067 | (let ((from (car elt)) | |
2068 | (to (cdr elt)) | |
2069 | to-alt rev-from rev-to) | |
2070 | ;; If we have already translated TO to TO-ALT, FROM should | |
2071 | ;; also be translated to TO-ALT. | |
2072 | (if (setq to-alt (aref table to)) | |
2073 | (setq to to-alt)) | |
2074 | (aset table from to) | |
2075 | ;; If we have already translated some chars to FROM, they | |
2076 | ;; should also be translated to TO. | |
2077 | (when (setq rev-from (assq from revlist)) | |
2078 | (dolist (elt (cdr rev-from)) | |
2079 | (aset table elt to)) | |
2080 | (setq revlist (delq rev-from revlist) | |
2081 | rev-from (cdr rev-from))) | |
2082 | ;; Now update REVLIST. | |
2083 | (setq rev-to (assq to revlist)) | |
2084 | (if rev-to | |
2085 | (setcdr rev-to (cons from (cdr rev-to))) | |
2086 | (setq rev-to (list to from) | |
2087 | revlist (cons rev-to revlist))) | |
2088 | (if rev-from | |
2089 | (setcdr rev-to (append rev-from (cdr rev-to))))))) | |
a73a8c89 | 2090 | ;; Return TABLE just created. |
350cd166 | 2091 | (set-char-table-extra-slot table 1 1) |
a73a8c89 KH |
2092 | table)) |
2093 | ||
c76b5c99 KH |
2094 | (defun make-translation-table-from-vector (vec) |
2095 | "Make translation table from decoding vector VEC. | |
9e3b6057 DL |
2096 | VEC is an array of 256 elements to map unibyte codes to multibyte |
2097 | characters. Elements may be nil for undefined code points. | |
c76b5c99 KH |
2098 | See also the variable `nonascii-translation-table'." |
2099 | (let ((table (make-char-table 'translation-table)) | |
2100 | (rev-table (make-char-table 'translation-table)) | |
c76b5c99 | 2101 | ch) |
9e3b6057 | 2102 | (dotimes (i 256) |
c76b5c99 | 2103 | (setq ch (aref vec i)) |
9e3b6057 DL |
2104 | (when ch |
2105 | (aset table i ch) | |
2106 | (if (>= ch 256) | |
2107 | (aset rev-table ch i)))) | |
c76b5c99 | 2108 | (set-char-table-extra-slot table 0 rev-table) |
350cd166 KH |
2109 | (set-char-table-extra-slot table 1 1) |
2110 | (set-char-table-extra-slot rev-table 1 1) | |
c76b5c99 KH |
2111 | table)) |
2112 | ||
a6d1872e KH |
2113 | (defun make-translation-table-from-alist (alist) |
2114 | "Make translation table from N<->M mapping in ALIST. | |
2115 | ALIST is an alist, each element has the form (FROM . TO). | |
2116 | FROM and TO are a character or a vector of characters. | |
2117 | If FROM is a character, that character is translated to TO. | |
2118 | If FROM is a vector of characters, that sequence is translated to TO. | |
350cd166 KH |
2119 | The first extra-slot of the value is a translation table for reverse mapping." |
2120 | (let ((tables (vector (make-char-table 'translation-table) | |
2121 | (make-char-table 'translation-table))) | |
2122 | table max-lookup from to idx val) | |
2123 | (dotimes (i 2) | |
2124 | (setq table (aref tables i)) | |
2125 | (setq max-lookup 1) | |
2126 | (dolist (elt alist) | |
2127 | (if (= i 0) | |
2128 | (setq from (car elt) to (cdr elt)) | |
2129 | (setq from (cdr elt) to (car elt))) | |
2130 | (if (characterp from) | |
2131 | (setq idx from) | |
2132 | (setq idx (aref from 0) | |
2133 | max-lookup (max max-lookup (length from)))) | |
2134 | (setq val (aref table idx)) | |
2135 | (if val | |
2136 | (progn | |
2137 | (or (consp val) | |
2138 | (setq val (list (cons (vector idx) val)))) | |
2139 | (if (characterp from) | |
2140 | (setq from (vector from))) | |
2141 | (setq val (nconc val (list (cons from to))))) | |
2142 | (if (characterp from) | |
2143 | (setq val to) | |
2144 | (setq val (list (cons from to))))) | |
2145 | (aset table idx val)) | |
2146 | (set-char-table-extra-slot table 1 max-lookup)) | |
2147 | (set-char-table-extra-slot (aref tables 0) 0 (aref tables 1)) | |
2148 | (aref tables 0))) | |
a6d1872e | 2149 | |
f967223b | 2150 | (defun define-translation-table (symbol &rest args) |
a284eea3 DL |
2151 | "Define SYMBOL as the name of translation table made by ARGS. |
2152 | This sets up information so that the table can be used for | |
2153 | translations in a CCL program. | |
b25eef20 | 2154 | |
a284eea3 DL |
2155 | If the first element of ARGS is a char-table whose purpose is |
2156 | `translation-table', just define SYMBOL to name it. (Note that this | |
2157 | function does not bind SYMBOL.) | |
007c79c8 | 2158 | |
a284eea3 | 2159 | Any other ARGS should be suitable as arguments of the function |
007c79c8 | 2160 | `make-translation-table' (which see). |
b25eef20 | 2161 | |
452fdb31 | 2162 | This function sets properties `translation-table' and |
521d4010 DL |
2163 | `translation-table-id' of SYMBOL to the created table itself and the |
2164 | identification number of the table respectively. It also registers | |
2165 | the table in `translation-table-vector'." | |
007c79c8 KH |
2166 | (let ((table (if (and (char-table-p (car args)) |
2167 | (eq (char-table-subtype (car args)) | |
2168 | 'translation-table)) | |
2169 | (car args) | |
2170 | (apply 'make-translation-table args))) | |
f967223b | 2171 | (len (length translation-table-vector)) |
d9e3229d | 2172 | (id 0) |
b25eef20 | 2173 | (done nil)) |
f967223b | 2174 | (put symbol 'translation-table table) |
b25eef20 KH |
2175 | (while (not done) |
2176 | (if (>= id len) | |
f967223b KH |
2177 | (setq translation-table-vector |
2178 | (vconcat translation-table-vector (make-vector len nil)))) | |
2179 | (let ((slot (aref translation-table-vector id))) | |
b25eef20 KH |
2180 | (if (or (not slot) |
2181 | (eq (car slot) symbol)) | |
2182 | (progn | |
f967223b | 2183 | (aset translation-table-vector id (cons symbol table)) |
007c79c8 KH |
2184 | (setq done t)) |
2185 | (setq id (1+ id))))) | |
f967223b | 2186 | (put symbol 'translation-table-id id) |
d9e3229d KH |
2187 | id)) |
2188 | ||
16431d3c KH |
2189 | (defun translate-region (start end table) |
2190 | "From START to END, translate characters according to TABLE. | |
2191 | TABLE is a string or a char-table. | |
2192 | If TABLE is a string, the Nth character in it is the mapping | |
2193 | for the character with code N. | |
2194 | If TABLE is a char-table, the element for character N is the mapping | |
2195 | for the character with code N. | |
2196 | It returns the number of characters changed." | |
2197 | (interactive | |
2198 | (list (region-beginning) | |
2199 | (region-end) | |
2200 | (let (table l) | |
2201 | (dotimes (i (length translation-table-vector)) | |
2202 | (if (consp (aref translation-table-vector i)) | |
2203 | (push (list (symbol-name | |
2204 | (car (aref translation-table-vector i)))) l))) | |
2205 | (if (not l) | |
2206 | (error "No translation table defined")) | |
2207 | (while (not table) | |
2208 | (setq table (completing-read "Translation table: " l nil t))) | |
2209 | (intern table)))) | |
2210 | (if (symbolp table) | |
2211 | (let ((val (get table 'translation-table))) | |
2212 | (or (char-table-p val) | |
2213 | (error "Invalid translation table name: %s" table)) | |
2214 | (setq table val))) | |
2215 | (translate-region-internal start end table)) | |
2216 | ||
35554641 KH |
2217 | (put 'with-category-table 'lisp-indent-function 1) |
2218 | ||
ef6e365d | 2219 | (defmacro with-category-table (table &rest body) |
8f924df7 | 2220 | "Execute BODY like `progn' with CATEGORY-TABLE the current category table. |
ef6e365d JPW |
2221 | The category table of the current buffer is saved, BODY is evaluated, |
2222 | then the saved table is restored, even in case of an abnormal exit. | |
2223 | Value is what BODY returns." | |
2224 | (let ((old-table (make-symbol "old-table")) | |
2225 | (old-buffer (make-symbol "old-buffer"))) | |
2226 | `(let ((,old-table (category-table)) | |
2227 | (,old-buffer (current-buffer))) | |
2228 | (unwind-protect | |
2229 | (progn | |
2230 | (set-category-table ,table) | |
2231 | ,@body) | |
053f45dd | 2232 | (with-current-buffer ,old-buffer |
ef6e365d | 2233 | (set-category-table ,old-table)))))) |
35554641 | 2234 | |
394e4eb0 DL |
2235 | (defun define-translation-hash-table (symbol table) |
2236 | "Define SYMBOL as the name of the hash translation TABLE for use in CCL. | |
2237 | ||
2238 | Analogous to `define-translation-table', but updates | |
2239 | `translation-hash-table-vector' and the table is for use in the CCL | |
2240 | `lookup-integer' and `lookup-character' functions." | |
2241 | (unless (and (symbolp symbol) | |
2242 | (hash-table-p table)) | |
2243 | (error "Bad args to define-translation-hash-table")) | |
2244 | (let ((len (length translation-hash-table-vector)) | |
2245 | (id 0) | |
2246 | done) | |
2247 | (put symbol 'translation-hash-table table) | |
2248 | (while (not done) | |
2249 | (if (>= id len) | |
2250 | (setq translation-hash-table-vector | |
2251 | (vconcat translation-hash-table-vector [nil]))) | |
2252 | (let ((slot (aref translation-hash-table-vector id))) | |
2253 | (if (or (not slot) | |
2254 | (eq (car slot) symbol)) | |
2255 | (progn | |
2256 | (aset translation-hash-table-vector id (cons symbol table)) | |
2257 | (setq done t)) | |
2258 | (setq id (1+ id))))) | |
2259 | (put symbol 'translation-hash-table-id id) | |
2260 | id)) | |
2261 | ||
69eba008 KH |
2262 | ;;; Initialize some variables. |
2263 | ||
2264 | (put 'use-default-ascent 'char-table-extra-slots 0) | |
2265 | (setq use-default-ascent (make-char-table 'use-default-ascent)) | |
d6d6d592 KH |
2266 | (put 'ignore-relative-composition 'char-table-extra-slots 0) |
2267 | (setq ignore-relative-composition | |
2268 | (make-char-table 'ignore-relative-composition)) | |
69eba008 | 2269 | |
256d0fef | 2270 | (make-obsolete 'set-char-table-default |
8589dc17 | 2271 | "Generic characters no longer exist" "23.1") |
d9f6dfe6 CW |
2272 | |
2273 | ;;; Built-in auto-coding-functions: | |
2274 | ||
2275 | (defun sgml-xml-auto-coding-function (size) | |
2276 | "Determine whether the buffer is XML, and if so, its encoding. | |
2277 | This function is intended to be added to `auto-coding-functions'." | |
c069d3ac SM |
2278 | (setq size (+ (point) size)) |
2279 | (when (re-search-forward "\\`[[:space:]\n]*<\\?xml" size t) | |
d9f6dfe6 CW |
2280 | (let ((end (save-excursion |
2281 | ;; This is a hack. | |
c2c51a11 | 2282 | (re-search-forward "[\"']\\s-*\\?>" size t)))) |
d9f6dfe6 | 2283 | (when end |
c2c51a11 | 2284 | (if (re-search-forward "encoding=[\"']\\(.+?\\)[\"']" end t) |
447404a3 CW |
2285 | (let* ((match (match-string 1)) |
2286 | (sym (intern (downcase match)))) | |
2287 | (if (coding-system-p sym) | |
2288 | sym | |
2289 | (message "Warning: unknown coding system \"%s\"" match) | |
2290 | nil)) | |
c6578617 JR |
2291 | ;; Files without an encoding tag should be UTF-8. But users |
2292 | ;; may be naive about encodings, and have saved the file from | |
2293 | ;; another editor that does not help them get the encoding right. | |
2294 | ;; Detect the encoding and warn the user if it is detected as | |
2295 | ;; something other than UTF-8. | |
2296 | (let ((detected | |
2297 | (with-coding-priority '(utf-8) | |
2298 | (coding-system-base | |
2299 | (detect-coding-region (point-min) size t))))) | |
2300 | ;; Pure ASCII always comes back as undecided. | |
2301 | (if (memq detected '(utf-8 undecided)) | |
2302 | 'utf-8 | |
2303 | (warn "File contents detected as %s. | |
2304 | Consider adding an encoding attribute to the xml declaration, | |
2305 | or saving as utf-8, as mandated by the xml specification." detected) | |
2306 | detected))))))) | |
d9f6dfe6 | 2307 | |
447404a3 CW |
2308 | (defun sgml-html-meta-auto-coding-function (size) |
2309 | "If the buffer has an HTML meta tag, use it to determine encoding. | |
2310 | This function is intended to be added to `auto-coding-functions'." | |
df3c9fe7 GM |
2311 | (let ((case-fold-search t)) |
2312 | (setq size (min (+ (point) size) | |
2313 | (save-excursion | |
2314 | ;; Limit the search by the end of the HTML header. | |
9e5e233a | 2315 | (or (search-forward "</head>" (+ (point) size) t) |
df3c9fe7 GM |
2316 | ;; In case of no header, search only 10 lines. |
2317 | (forward-line 10)) | |
2318 | (point)))) | |
2319 | ;; Make sure that the buffer really contains an HTML document, by | |
2320 | ;; checking that it starts with a doctype or a <HTML> start tag | |
2321 | ;; (allowing for whitespace at bob). Note: 'DOCTYPE NETSCAPE' is | |
2322 | ;; useful for Mozilla bookmark files. | |
2323 | (when (and (re-search-forward "\\`[[:space:]\n]*\\(<!doctype[[:space:]\n]+\\(html\\|netscape\\)\\|<html\\)" size t) | |
2324 | (re-search-forward "<meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']text/\\sw+;\\s-*charset=\\(.+?\\)[\"']" size t)) | |
2325 | (let* ((match (match-string 1)) | |
2326 | (sym (intern (downcase match)))) | |
2327 | (if (coding-system-p sym) | |
2328 | sym | |
2329 | (message "Warning: unknown coding system \"%s\"" match) | |
2330 | nil))))) | |
0bca779a | 2331 | |
c6578617 JR |
2332 | (defun xml-find-file-coding-system (args) |
2333 | "Determine the coding system of an XML file without a declaration. | |
2334 | Strictly speaking, the file should be utf-8, but mistakes are | |
2335 | made, and there are genuine cases where XML fragments are saved, | |
2336 | with the encoding properly specified in a master document, or | |
2337 | added by processing software." | |
2338 | (if (eq (car args) 'insert-file-contents) | |
2339 | (let ((detected | |
2340 | (with-coding-priority '(utf-8) | |
2341 | (coding-system-base | |
2342 | (detect-coding-region (point-min) (point-max) t))))) | |
2343 | ;; Pure ASCII always comes back as undecided. | |
228de8de JR |
2344 | (cond |
2345 | ((memq detected '(utf-8 undecided)) | |
2346 | 'utf-8) | |
2347 | ((eq detected 'utf-16le-with-signature) 'utf-16le-with-signature) | |
2348 | ((eq detected 'utf-16be-with-signature) 'utf-16be-with-signature) | |
2349 | (t | |
c6578617 JR |
2350 | (warn "File contents detected as %s. |
2351 | Consider adding an xml declaration with the encoding specified, | |
2352 | or saving as utf-8, as mandated by the xml specification." detected) | |
228de8de | 2353 | detected))) |
c6578617 JR |
2354 | ;; Don't interfere with the user's wishes for saving the buffer. |
2355 | ;; We did what we could when the buffer was created to ensure the | |
2356 | ;; correct encoding was used, or the user was warned, so any | |
2357 | ;; non-conformity here is deliberate on the part of the user. | |
2358 | 'undecided)) | |
2359 | ||
69eba008 | 2360 | ;;; |
4ed46869 KH |
2361 | (provide 'mule) |
2362 | ||
2850984d | 2363 | ;; arch-tag: 9aebaa6e-0e8a-40a9-b857-cb5d04a39e7c |
4ed46869 | 2364 | ;;; mule.el ends here |