1 ;;; emu-nemacs.el --- emu API implementation for NEmacs
3 ;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Keywords: emulation, compatibility, NEmacs, mule
8 ;; This file is part of emu.
10 ;; This program is free software; you can redistribute it and/or
11 ;; modify it under the terms of the GNU General Public License as
12 ;; published by the Free Software Foundation; either version 2, or (at
13 ;; your option) any later version.
15 ;; This program is distributed in the hope that it will be useful, but
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
34 'charset-description "Character set of ASCII")
36 'charset-registry "ASCII")
38 (put 'japanese-jisx0208
39 'charset-description "Character set of JIS X0208-1983")
40 (put 'japanese-jisx0208
41 'charset-registry "JISX0208.1983")
43 (defun charset-description (charset)
44 "Return description of CHARSET. [emu-nemacs.el]"
45 (get charset 'charset-description)
48 (defun charset-registry (charset)
49 "Return registry name of CHARSET. [emu-nemacs.el]"
50 (get charset 'charset-registry)
53 (defun charset-width (charset)
54 "Return number of columns a CHARSET occupies when displayed.
56 (if (eq charset 'ascii)
60 (defun charset-direction (charset)
61 "Return the direction of a character of CHARSET by
62 0 (left-to-right) or 1 (right-to-left). [emu-nemacs.el]"
65 (defun find-charset-string (str)
66 "Return a list of charsets in the string.
67 \[emu-nemacs.el; Mule emulating function]"
68 (if (string-match "[\200-\377]" str)
72 (defalias 'find-non-ascii-charset-string 'find-charset-string)
74 (defun find-charset-region (start end)
75 "Return a list of charsets in the region between START and END.
76 \[emu-nemacs.el; Mule emulating function]"
79 (narrow-to-region start end)
81 (re-search-forward "[\200-\377]" nil t)
86 (defalias 'find-non-ascii-charset-region 'find-charset-region)
88 (defun check-ASCII-string (str)
91 (setq len (length str))
94 (if (>= (elt str i) 128)
100 ;;; @@ for old MULE emulation
103 ;;(defconst lc-ascii 0)
104 ;;(defconst lc-jp 146)
110 (defconst *noconv* 0)
114 (defconst *internal* 3)
115 (defconst *euc-japan* 3)
117 (defun decode-coding-string (string coding-system)
118 "Decode the STRING which is encoded in CODING-SYSTEM.
119 \[emu-nemacs.el; EMACS 20 emulating function]"
120 (if (eq coding-system 3)
122 (convert-string-kanji-code string coding-system 3)
125 (defun encode-coding-string (string coding-system)
126 "Encode the STRING to CODING-SYSTEM.
127 \[emu-nemacs.el; EMACS 20 emulating function]"
128 (if (eq coding-system 3)
130 (convert-string-kanji-code string 3 coding-system)
133 (defun decode-coding-region (start end coding-system)
134 "Decode the text between START and END which is encoded in CODING-SYSTEM.
135 \[emu-nemacs.el; EMACS 20 emulating function]"
139 (narrow-to-region start end)
140 (convert-region-kanji-code start end coding-system 3)
143 (defun encode-coding-region (start end coding-system)
144 "Encode the text between START and END to CODING-SYSTEM.
145 \[emu-nemacs.el; EMACS 20 emulating function]"
149 (narrow-to-region start end)
150 (convert-region-kanji-code start end 3 coding-system)
153 (defun detect-coding-region (start end)
154 "Detect coding-system of the text in the region between START and END.
155 \[emu-nemacs.el; Emacs 20 emulating function]"
158 (narrow-to-region start end)
160 (re-search-forward "[\200-\377]" nil t)
165 (defalias 'set-buffer-file-coding-system 'set-kanji-fileio-code)
167 (defmacro as-binary-process (&rest body)
168 (` (let (selective-display ; Disable ^M to nl translation.
171 (default-kanji-process-code 0)
172 program-kanji-code-alist)
176 (defmacro as-binary-input-file (&rest body)
181 (defmacro as-binary-output-file (&rest body)
187 ;;; @@ for old MULE emulation
190 (defun code-convert-string (str ic oc)
191 "Convert code in STRING from SOURCE code to TARGET code,
192 On successful converion, returns the result string,
193 else returns nil. [emu-nemacs.el; Mule emulating function]"
195 (convert-string-kanji-code str ic oc)
198 (defun code-convert-region (beg end ic oc)
199 "Convert code of the text between BEGIN and END from SOURCE
200 to TARGET. On successful conversion returns t,
201 else returns nil. [emu-nemacs.el; Mule emulating function]"
205 (narrow-to-region beg end)
206 (convert-region-kanji-code beg end ic oc)
213 (defun insert-file-contents-as-binary (filename
214 &optional visit beg end replace)
215 "Like `insert-file-contents', q.v., but don't character code conversion.
218 (insert-file-contents filename visit beg end replace)
221 (fset 'insert-binary-file-contents 'insert-file-contents-as-binary)
223 (defun insert-binary-file-contents-literally (filename
224 &optional visit beg end replace)
225 "Like `insert-file-contents-literally', q.v., but don't code conversion.
226 A buffer may be modified in several ways after reading into the buffer due
227 to advanced Emacs features, such as file-name-handlers, format decoding,
228 find-file-hooks, etc.
229 This function ensures that none of these modifications will take place.
232 (insert-file-contents-literally filename visit beg end replace)
235 (defun write-region-as-binary (start end filename
236 &optional append visit lockname)
237 "Like `write-region', q.v., but don't code conversion. [emu-nemacs.el]"
239 (write-region start end filename append visit)
246 (defvar charsets-mime-charset-alist
247 '(((ascii) . us-ascii)))
249 (defvar default-mime-charset 'iso-2022-jp)
251 (defvar mime-charset-coding-system-alist
256 (defun mime-charset-to-coding-system (charset)
257 (if (stringp charset)
258 (setq charset (intern (downcase charset)))
260 (cdr (assq charset mime-charset-coding-system-alist))
263 (defun detect-mime-charset-region (start end)
264 "Return MIME charset for region between START and END.
268 (narrow-to-region start end)
270 (re-search-forward "[\200-\377]" nil t)
275 (defun encode-mime-charset-region (start end charset)
276 "Encode the text between START and END as MIME CHARSET.
278 (let ((cs (mime-charset-to-coding-system charset)))
283 (narrow-to-region start end)
284 (convert-region-kanji-code start end 3 cs)
288 (defun decode-mime-charset-region (start end charset)
289 "Decode the text between START and END as MIME CHARSET.
291 (let ((cs (mime-charset-to-coding-system charset)))
296 (narrow-to-region start end)
297 (convert-region-kanji-code start end cs 3)
301 (defun encode-mime-charset-string (string charset)
302 "Encode the STRING as MIME CHARSET. [emu-nemacs.el]"
303 (let ((cs (mime-charset-to-coding-system charset)))
305 (convert-string-kanji-code string 3 cs)
308 (defun decode-mime-charset-string (string charset)
309 "Decode the STRING as MIME CHARSET. [emu-nemacs.el]"
310 (let ((cs (mime-charset-to-coding-system charset)))
312 (convert-string-kanji-code string cs 3)
315 (defun write-region-as-mime-charset (charset start end filename)
316 "Like `write-region', q.v., but code-convert by MIME CHARSET.
318 (let ((kanji-fileio-code
319 (or (mime-charset-to-coding-system charset)
321 (write-region start end filename)
328 (defun char-charset (chr)
329 "Return the character set of char CHR.
330 \[emu-nemacs.el; MULE emulating function]"
335 (defun char-bytes (chr)
336 "Return number of bytes CHAR will occupy in a buffer.
337 \[emu-nemacs.el; Mule emulating function]"
338 (if (< chr 128) 1 2))
340 (defun char-width (char)
341 "Return number of columns a CHAR occupies when displayed.
347 (defalias 'char-length 'char-bytes)
349 (defmacro char-next-index (char index)
350 "Return index of character succeeding CHAR whose index is INDEX."
351 (` (+ (, index) (char-bytes (, char)))))
357 (defalias 'string-width 'length)
359 (defun sref (str idx)
360 "Return the character in STR at index IDX.
361 \[emu-nemacs.el; Mule emulating function]"
362 (let ((chr (aref str idx)))
365 (logior (lsh (aref str (1+ idx)) 8) chr)
368 (defun string-to-char-list (str)
369 (let ((i 0)(len (length str)) dest chr)
371 (setq chr (aref str i))
374 chr (+ (lsh chr 8) (aref str i))
376 (setq dest (cons chr dest))
382 (fset 'string-to-int-list (symbol-function 'string-to-char-list))
384 ;;; Imported from Mule-2.3
385 (defun truncate-string (str width &optional start-column)
386 "Truncate STR to fit in WIDTH columns.
387 Optional non-nil arg START-COLUMN specifies the starting column.
388 \[emu-mule.el; Mule 2.3 emulating function]"
390 (setq start-column 0))
391 (let ((max-width (string-width str))
396 (if (>= width max-width)
397 (setq width max-width))
398 (if (>= start-column width)
400 (while (< column start-column)
401 (setq ch (aref str from)
402 column (+ column (char-columns ch))
403 from (+ from (char-bytes ch))))
404 (if (< width max-width)
407 (while (<= column width)
408 (setq ch (aref str to)
409 column (+ column (char-columns ch))
411 to (+ to (char-bytes ch))))
413 (substring str from to))))
415 (defalias 'looking-at-as-unibyte 'looking-at)
417 ;;; @@ obsoleted aliases
419 ;;; You should not use them.
421 (defalias 'string-columns 'length)
424 ;;; @ text property emulation
427 (defvar emu:available-face-attribute-alist
429 ;;(bold . inversed-region)
430 (italic . underlined-region)
431 (underline . underlined-region)
434 ;; by YAMATE Keiichirou 1994/10/28
435 (defun attribute-add-narrow-attribute (attr from to)
436 (or (consp (symbol-value attr))
438 (let* ((attr-value (symbol-value attr))
439 (len (car attr-value))
442 (while (and (< posfrom len)
443 (> from (nth posfrom attr-value)))
444 (setq posfrom (1+ posfrom)))
446 (while (and (< posto len)
447 (> to (nth posto attr-value)))
448 (setq posto (1+ posto)))
449 (if (= posto posfrom)
450 (if (= (% posto 2) 1)
452 (= to (nth posto attr-value)))
453 (set-marker (nth posto attr-value) from)
454 (setcdr (nthcdr (1- posfrom) attr-value)
455 (cons (set-marker-type (set-marker (make-marker)
458 (cons (set-marker-type (set-marker (make-marker)
461 (nthcdr posto attr-value))))
462 (setcar attr-value (+ len 2))))
463 (if (= (% posfrom 2) 0)
464 (setq posfrom (1- posfrom))
465 (set-marker (nth posfrom attr-value) from))
466 (if (= (% posto 2) 0)
468 (setq posto (1- posto))
469 (set-marker (nth posto attr-value) to))
470 (setcdr (nthcdr posfrom attr-value)
471 (nthcdr posto attr-value)))))
473 (defalias 'make-overlay 'cons)
475 (defun overlay-put (overlay prop value)
476 (let ((ret (and (eq prop 'face)
477 (assq value emu:available-face-attribute-alist)
480 (attribute-add-narrow-attribute (cdr ret)
481 (car overlay)(cdr overlay))
488 (provide 'emu-nemacs)
490 ;;; emu-nemacs.el ends here