2 ;;; emu-nemacs.el --- Mule 2 emulation module for NEmacs
4 ;;; Copyright (C) 1995 Free Software Foundation, Inc.
5 ;;; Copyright (C) 1993 .. 1996 MORIOKA Tomohiko
7 ;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
8 ;;; modified by KOBAYASHI Shuhei <shuhei-k@jaist.ac.jp>
10 ;;; $Id: emu-nemacs.el,v 7.30 1996/06/10 07:31:34 morioka Exp $
11 ;;; Keywords: emulation, compatibility, NEmacs, Mule
13 ;;; This file is part of tl (Tiny Library).
15 ;;; This program is free software; you can redistribute it and/or
16 ;;; modify it under the terms of the GNU General Public License as
17 ;;; published by the Free Software Foundation; either version 2, or
18 ;;; (at your option) any later version.
20 ;;; This program is distributed in the hope that it will be useful,
21 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
22 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 ;;; General Public License for more details.
25 ;;; You should have received a copy of the GNU General Public License
26 ;;; along with This program. If not, write to the Free Software
27 ;;; Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
37 (defconst charset-ascii 0 "Character set of ASCII")
38 (defconst charset-jisx0208 146 "Character set of JIS X0208-1983")
40 (defun charset-description (charset)
41 "Return description of CHARSET. [emu-nemacs.el]"
43 (documentation-property 'charset-ascii 'variable-documentation)
44 (documentation-property 'charset-jisx0208 'variable-documentation)
47 (defun charset-registry (charset)
48 "Return registry name of CHARSET. [emu-nemacs.el]"
53 (defun charset-columns (charset)
54 "Return number of columns a CHARSET occupies when displayed.
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 (defun find-charset-region (start end)
73 "Return a list of charsets in the region between START and END.
74 \[emu-nemacs.el; Mule emulating function]"
77 (narrow-to-region start end)
79 (re-search-forward "[\200-\377]" nil t)
84 (defun check-ASCII-string (str)
87 (setq len (length str))
90 (if (>= (elt str i) 128)
96 ;;; @@ for Mule emulation
106 (defconst *noconv* 0)
110 (defconst *internal* 3)
111 (defconst *euc-japan* 3)
113 (defun character-encode-string (str coding-system)
114 "Encode the string STR which is encoded in CODING-SYSTEM. [emu-nemacs.el]"
115 (convert-string-kanji-code str 3 coding-system)
118 (defun character-decode-string (str coding-system)
119 "Decode the string STR which is encoded in CODING-SYSTEM. [emu-nemacs.el]"
120 (convert-string-kanji-code str coding-system 3)
123 (defun character-encode-region (start end coding-system)
124 "Encode the text between START and END which is
125 encoded in CODING-SYSTEM. [emu-nemacs.el]"
128 (narrow-to-region beg end)
129 (convert-region-kanji-code start end 3 coding-system)
132 (defun character-decode-region (start end coding-system)
133 "Decode the text between START and END which is
134 encoded in CODING-SYSTEM. [emu-nemacs.el]"
137 (narrow-to-region beg end)
138 (convert-region-kanji-code start end coding-system 3)
141 (defun code-convert-string (str ic oc)
142 "Convert code in STRING from SOURCE code to TARGET code,
143 On successful converion, returns the result string,
144 else returns nil. [emu-nemacs.el; Mule emulating function]"
146 (convert-string-kanji-code str ic oc)
149 (defun code-convert-region (beg end ic oc)
150 "Convert code of the text between BEGIN and END from SOURCE
151 to TARGET. On successful conversion returns t,
152 else returns nil. [emu-nemacs.el; Mule emulating function]"
156 (narrow-to-region beg end)
157 (convert-region-kanji-code beg end ic oc)
160 (defun code-detect-region (start end)
161 "Detect coding-system of the text in the region between START and END.
162 \[emu-nemacs.el; Mule emulating function]"
165 (narrow-to-region start end)
167 (re-search-forward "[\200-\377]" nil t)
172 (defun set-file-coding-system (coding-system &optional force)
173 (set-kanji-fileio-code coding-system)
180 (defun char-charset (chr)
181 "Return the character set of char CHR.
182 \[emu-nemacs.el; XEmacs 20 emulating function]"
187 (defun char-bytes (chr)
188 "Return number of bytes CHAR will occupy in a buffer.
189 \[emu-nemacs.el; Mule emulating function]"
190 (if (< chr 128) 1 2))
192 (defalias 'char-length 'char-bytes)
194 (defun char-columns (character)
195 "Return number of columns a CHARACTER occupies when displayed.
197 (if (< character 128)
201 ;;; @@ for Mule emulation
204 (defalias 'char-leading-char 'char-charset)
206 (defalias 'char-width 'char-columns)
212 (defalias 'string-columns 'length)
214 (defun sref (str idx)
215 "Return the character in STR at index IDX.
216 \[emu-nemacs.el; Mule emulating function]"
217 (let ((chr (aref str idx)))
220 (logior (lsh (aref str (1+ idx)) 8) chr)
223 (defun string-to-char-list (str)
224 (let ((i 0)(len (length str)) dest chr)
226 (setq chr (aref str i))
229 chr (+ (lsh chr 8) (aref str i))
231 (setq dest (cons chr dest))
237 (fset 'string-to-int-list (symbol-function 'string-to-char-list))
239 ;;; Imported from Mule-2.3
240 (defun truncate-string (str width &optional start-column)
241 "Truncate STR to fit in WIDTH columns.
242 Optional non-nil arg START-COLUMN specifies the starting column.
243 \[emu-mule.el; Mule 2.3 emulating function]"
245 (setq start-column 0))
246 (let ((max-width (string-width str))
251 (if (>= width max-width)
252 (setq width max-width))
253 (if (>= start-column width)
255 (while (< column start-column)
256 (setq ch (aref str from)
257 column (+ column (char-columns ch))
258 from (+ from (char-bytes ch))))
259 (if (< width max-width)
262 (while (<= column width)
263 (setq ch (aref str to)
264 column (+ column (char-columns ch))
266 to (+ to (char-bytes ch))))
268 (substring str from to))))
270 ;;; @@ for Mule emulation
273 (defalias 'string-width 'length)
276 ;;; @ text property emulation
279 (setq tl:available-face-attribute-alist
281 ;;(bold . inversed-region)
282 (italic . underlined-region)
283 (underline . underlined-region)
286 ;; by YAMATE Keiichirou 1994/10/28
287 (defun attribute-add-narrow-attribute (attr from to)
288 (or (consp (symbol-value attr))
290 (let* ((attr-value (symbol-value attr))
291 (len (car attr-value))
294 (while (and (< posfrom len)
295 (> from (nth posfrom attr-value)))
296 (setq posfrom (1+ posfrom)))
298 (while (and (< posto len)
299 (> to (nth posto attr-value)))
300 (setq posto (1+ posto)))
301 (if (= posto posfrom)
302 (if (= (% posto 2) 1)
304 (= to (nth posto attr-value)))
305 (set-marker (nth posto attr-value) from)
306 (setcdr (nthcdr (1- posfrom) attr-value)
307 (cons (set-marker-type (set-marker (make-marker)
310 (cons (set-marker-type (set-marker (make-marker)
313 (nthcdr posto attr-value))))
314 (setcar attr-value (+ len 2))))
315 (if (= (% posfrom 2) 0)
316 (setq posfrom (1- posfrom))
317 (set-marker (nth posfrom attr-value) from))
318 (if (= (% posto 2) 0)
320 (setq posto (1- posto))
321 (set-marker (nth posto attr-value) to))
322 (setcdr (nthcdr posfrom attr-value)
323 (nthcdr posto attr-value)))))
325 (defalias 'tl:make-overlay 'cons)
327 (defun tl:overlay-put (overlay prop value)
328 (let ((ret (and (eq prop 'face)
329 (assq value tl:available-face-attribute-alist)
332 (attribute-add-narrow-attribute (cdr ret)
333 (car overlay)(cdr overlay))
340 (provide 'emu-nemacs)
342 ;;; emu-nemacs.el ends here