1 ;;; poem-om.el --- poem implementation for Mule 1.* and Mule 2.*
3 ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Katsumi Yamaoka <yamaoka@jpl.org>
7 ;; Keywords: emulation, compatibility, Mule
9 ;; This file is part of APEL (A Portable Emacs Library).
11 ;; This program is free software; you can redistribute it and/or
12 ;; modify it under the terms of the GNU General Public License as
13 ;; published by the Free Software Foundation; either version 2, or (at
14 ;; your option) any later version.
16 ;; This program is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
31 ;;; @ version specific features
34 (cond ((= emacs-major-version 19)
35 ;; Suggested by SASAKI Osamu <osamu@shuugr.bekkoame.or.jp>
36 ;; (cf. [os2-emacs-ja:78])
37 (defun fontset-pixel-size (fontset)
38 (let* ((font (get-font-info
39 (aref (cdr (get-fontset-info fontset)) 0)))
44 (let ((pat (aref font 1)))
45 (if (string-match "-[0-9]+-" pat)
48 pat (1+ (match-beginning 0)) (1- (match-end 0))))
52 (define-ccl-program poem-ccl-decode-raw-text
68 "Convert line-break code from CRLF to LF.")
70 (define-ccl-program poem-ccl-encode-raw-text
73 (loop (write-read-repeat r0))))
74 "Pass through without any conversions.")
76 (define-ccl-program poem-ccl-encode-raw-text-CRLF
84 "Convert line-break code from LF to CRLF.")
90 (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text))
96 (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text-CRLF))
99 (defun poem-decode-raw-text (from to)
101 (narrow-to-region from to)
102 (goto-char (point-min))
103 (while (re-search-forward "\r$" nil t)
106 (defun poem-encode-raw-text-CRLF (from to)
108 (narrow-to-region from to)
109 (goto-char (point-min))
110 (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
111 (replace-match "\\1\r\n")
114 (make-coding-system 'raw-text nil ?= "No conversion")
115 (put 'raw-text 'post-read-conversion 'poem-decode-raw-text)
117 (make-coding-system 'raw-text-dos nil ?= "No conversion")
118 (put 'raw-text-dos 'post-read-conversion 'poem-decode-raw-text)
119 (put 'raw-text-dos 'pre-write-conversion 'poem-encode-raw-text-CRLF)
126 (defalias 'make-char 'make-character)
128 (defalias 'find-non-ascii-charset-string 'find-charset-string)
129 (defalias 'find-non-ascii-charset-region 'find-charset-region)
131 (defalias 'charset-bytes 'char-bytes)
132 (defalias 'charset-description 'char-description)
133 (defalias 'charset-registry 'char-registry)
134 (defalias 'charset-columns 'char-width)
135 (defalias 'charset-direction 'char-direction)
137 (defun charset-chars (charset)
138 "Return the number of characters per dimension of CHARSET."
139 (if (= (logand (nth 2 (character-set charset)) 1) 1)
147 (defun encode-coding-region (start end coding-system)
148 "Encode the text between START and END to CODING-SYSTEM.
149 \[EMACS 20 emulating function]"
150 ;; If `coding-system' is nil, do nothing.
151 (code-convert-region start end *internal* coding-system))
153 (defun decode-coding-region (start end coding-system)
154 "Decode the text between START and END which is encoded in CODING-SYSTEM.
155 \[EMACS 20 emulating function]"
156 ;; If `coding-system' is nil, do nothing.
157 (code-convert-region start end coding-system *internal*))
159 ;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x)
160 (defun encode-coding-string (str coding-system)
161 "Encode the STRING to CODING-SYSTEM.
162 \[EMACS 20 emulating function]"
164 (code-convert-string str *internal* coding-system)
165 ;;(code-convert-string str *internal* nil) returns nil instead of str.
168 ;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x)
169 (defun decode-coding-string (str coding-system)
170 "Decode the string STR which is encoded in CODING-SYSTEM.
171 \[EMACS 20 emulating function]"
173 (let ((len (length str))
175 (while (and (< 0 len)
178 (substring str 0 len)
179 coding-system *internal*))))
181 (concat ret (substring str len)))
184 (defalias 'detect-coding-region 'code-detect-region)
186 (defalias 'set-buffer-file-coding-system 'set-file-coding-system)
189 ;;; @ with code-conversion
192 (defun insert-file-contents-as-coding-system
193 (coding-system filename &optional visit beg end replace)
194 "Like `insert-file-contents', q.v., but CODING-SYSTEM the first arg will
195 be applied to `file-coding-system-for-read'."
196 (let ((file-coding-system-for-read coding-system))
197 (insert-file-contents filename visit beg end replace)))
200 ((and (>= emacs-major-version 19) (>= emacs-minor-version 29))
201 ;; for MULE 2.3 based on Emacs 19.34.
202 (defun write-region-as-coding-system
203 (coding-system start end filename &optional append visit lockname)
204 "Like `write-region', q.v., but CODING-SYSTEM the first arg will be
205 applied to `file-coding-system'."
206 (let ((file-coding-system coding-system)
207 jka-compr-compression-info-list jam-zcat-filename-list)
208 (write-region start end filename append visit lockname)))
210 (defun find-file-noselect-as-coding-system
211 (coding-system filename &optional nowarn rawfile)
212 "Like `find-file-noselect', q.v., but CODING-SYSTEM the first arg will
213 be applied to `file-coding-system-for-read'."
214 (let ((file-coding-system-for-read coding-system))
215 (find-file-noselect filename nowarn rawfile)))
218 ;; for MULE 2.3 based on Emacs 19.28 or MULE 1.*.
219 (defun write-region-as-coding-system
220 (coding-system start end filename &optional append visit lockname)
221 "Like `write-region', q.v., but CODING-SYSTEM the first arg will be
222 applied to `file-coding-system'."
223 (let ((file-coding-system coding-system)
224 jka-compr-compression-info-list jam-zcat-filename-list)
225 (write-region start end filename append visit)))
227 (defun find-file-noselect-as-coding-system
228 (coding-system filename &optional nowarn rawfile)
229 "Like `find-file-noselect', q.v., but CODING-SYSTEM the first arg will
230 be applied to `file-coding-system-for-read'."
231 (let ((file-coding-system-for-read coding-system))
232 (find-file-noselect filename nowarn)))
236 ;;; @ without code-conversion
239 (make-coding-system 'binary nil ?= "No conversion")
241 (defmacro as-binary-process (&rest body)
242 (` (let (selective-display ; Disable ^M to nl translation.
245 (default-process-coding-system (cons *noconv* *noconv*))
246 program-coding-system-alist)
249 (defmacro as-binary-input-file (&rest body)
251 (file-coding-system-for-read *noconv*)
255 (defmacro as-binary-output-file (&rest body)
257 (file-coding-system *noconv*)
261 (defalias 'set-process-input-coding-system 'set-process-coding-system)
263 (defun insert-binary-file-contents-literally (filename
264 &optional visit beg end replace)
265 "Like `insert-file-contents-literally', q.v., but don't code conversion.
266 A buffer may be modified in several ways after reading into the buffer due
267 to advanced Emacs features, such as file-name-handlers, format decoding,
268 find-file-hooks, etc.
269 This function ensures that none of these modifications will take place."
270 (as-binary-input-file
271 ;; Returns list absolute file name and length of data inserted.
272 (insert-file-contents-literally filename visit beg end replace)))
274 (defun insert-file-contents-as-binary (filename
275 &optional visit beg end replace)
276 "Like `insert-file-contents', q.v., but don't code and format conversion.
277 Like `insert-file-contents-literary', but it allows find-file-hooks,
278 automatic uncompression, etc.
280 Namely this function ensures that only format decoding and character
281 code conversion will not take place."
282 (as-binary-input-file
283 ;; Returns list absolute file name and length of data inserted.
284 (insert-file-contents filename visit beg end replace)))
286 (defun insert-file-contents-as-raw-text (filename
287 &optional visit beg end replace)
288 "Like `insert-file-contents', q.v., but don't code and format conversion.
289 Like `insert-file-contents-literary', but it allows find-file-hooks,
290 automatic uncompression, etc.
291 Like `insert-file-contents-as-binary', but it converts line-break
293 ;; Returns list absolute file name and length of data inserted.
294 (insert-file-contents-as-coding-system 'raw-text
295 filename visit beg end replace))
297 (defun write-region-as-binary (start end filename
298 &optional append visit lockname)
299 "Like `write-region', q.v., but don't code conversion."
300 (write-region-as-coding-system 'binary
301 start end filename append visit lockname))
303 (defun write-region-as-raw-text-CRLF (start end filename
304 &optional append visit lockname)
305 "Like `write-region', q.v., but don't code conversion."
306 (write-region-as-coding-system 'raw-text-dos
307 start end filename append visit lockname))
309 (defun open-network-stream-as-binary (name buffer host service)
310 "Like `open-network-stream', q.v., but don't code conversion."
311 (let ((process (open-network-stream name buffer host service)))
312 (set-process-coding-system process *noconv* *noconv*)
315 (defun find-file-noselect-as-binary (filename &optional nowarn rawfile)
316 "Like `find-file-noselect', q.v., but don't code and format conversion."
317 (find-file-noselect-as-coding-system 'binary filename nowarn rawfile))
319 (defun find-file-noselect-as-raw-text (filename &optional nowarn rawfile)
320 "Like `find-file-noselect', q.v., but it does not code and format
321 conversion except for line-break code."
322 (find-file-noselect-as-coding-system 'raw-text filename nowarn rawfile))
325 ;;; @ buffer representation
328 (defsubst-maybe set-buffer-multibyte (flag)
329 "Set the multibyte flag of the current buffer to FLAG.
330 If FLAG is t, this makes the buffer a multibyte buffer.
331 If FLAG is nil, this makes the buffer a single-byte buffer.
332 The buffer contents remain unchanged as a sequence of bytes
333 but the contents viewed as characters do change.
334 \[Emacs 20.3 emulating function]"
342 (defalias 'char-charset 'char-leading-char)
344 (defun split-char (character)
345 "Return list of charset and one or two position-codes of CHARACTER."
346 (let ((p (1- (char-bytes character)))
349 (setq dest (cons (- (char-component character p) 128) dest)
351 (cons (char-charset character) dest)))
353 (defmacro char-next-index (char index)
354 "Return index of character succeeding CHAR whose index is INDEX."
355 (` (+ (, index) (char-bytes (, char)))))
357 (if (subr-fboundp 'char-before)
361 (when (and (eq (car (get (car err) 'error-conditions))
362 'wrong-number-of-arguments)
363 (not (boundp 'si:char-before)))
364 (fset 'si:char-before (symbol-function 'char-before))
365 (defun char-before (&optional pos)
366 "Return character in current buffer preceding position POS.
367 POS is an integer or a buffer pointer.
368 If POS is out of range, the value is nil."
369 (si:char-before (or pos (point)))
372 (if (subr-fboundp 'char-after)
376 (when (and (eq (car (get (car err) 'error-conditions))
377 'wrong-number-of-arguments)
378 (not (boundp 'si:char-after)))
379 (fset 'si:char-after (symbol-function 'char-after))
380 (defun char-after (&optional pos)
381 "Return character in current buffer at position POS.
382 POS is an integer or a buffer pointer.
383 If POS is out of range, the value is nil."
384 (si:char-after (or pos (point)))
387 ;;; @@ obsoleted aliases
389 ;;; You should not use them.
391 (defalias 'char-length 'char-bytes)
392 ;;(defalias 'char-columns 'char-width)
398 (defalias 'string-columns 'string-width)
400 (defalias 'string-to-int-list 'string-to-char-list)
402 ;; Imported from Mule-2.3
403 (defun-maybe truncate-string (str width &optional start-column)
405 Truncate STR to fit in WIDTH columns.
406 Optional non-nil arg START-COLUMN specifies the starting column.
407 \[emu-mule.el; Mule 2.3 emulating function]"
409 (setq start-column 0))
410 (let ((max-width (string-width str))
415 (if (>= width max-width)
416 (setq width max-width))
417 (if (>= start-column width)
419 (while (< column start-column)
420 (setq ch (aref str from)
421 column (+ column (char-width ch))
422 from (+ from (char-bytes ch))))
423 (if (< width max-width)
426 (while (<= column width)
427 (setq ch (aref str to)
428 column (+ column (char-width ch))
430 to (+ to (char-bytes ch))))
432 (substring str from to))))
434 (defalias 'looking-at-as-unibyte 'looking-at)
442 ;;; poem-om.el ends here