1 ;;; poem-ltn1.el --- poem implementation for Emacs 19 and XEmacs without MULE
3 ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Keywords: emulation, compatibility, Mule
8 ;; This file is part of APEL (A Portable Emacs Library).
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.
27 ;;; @ buffer representation
33 (defun-maybe set-buffer-multibyte (flag)
34 "Set the multibyte flag of the current buffer to FLAG.
35 If FLAG is t, this makes the buffer a multibyte buffer.
36 If FLAG is nil, this makes the buffer a single-byte buffer.
37 The buffer contents remain unchanged as a sequence of bytes
38 but the contents viewed as characters do change.
39 \[Emacs 20.3 emulating macro]"
46 (put 'ascii 'charset-description "Character set of ASCII")
47 (put 'ascii 'charset-registry "ASCII")
49 (put 'latin-iso8859-1 'charset-description "Character set of ISO-8859-1")
50 (put 'latin-iso8859-1 'charset-registry "ISO8859-1")
52 (defun charset-description (charset)
53 "Return description of CHARSET."
54 (get charset 'charset-description))
56 (defun charset-registry (charset)
57 "Return registry name of CHARSET."
58 (get charset 'charset-registry))
60 (defun charset-width (charset)
61 "Return number of columns a CHARSET occupies when displayed."
64 (defun charset-direction (charset)
65 "Return the direction of a character of CHARSET by
66 0 (left-to-right) or 1 (right-to-left)."
69 (defun find-charset-string (str)
70 "Return a list of charsets in the string."
71 (if (string-match "[\200-\377]" str)
75 (defalias 'find-non-ascii-charset-string 'find-charset-string)
77 (defun find-charset-region (start end)
78 "Return a list of charsets in the region between START and END."
81 (re-search-forward "[\200-\377]" end t))
85 (defalias 'find-non-ascii-charset-region 'find-charset-region)
91 (defun decode-coding-string (string coding-system)
92 "Decode the STRING which is encoded in CODING-SYSTEM."
95 (defun encode-coding-string (string coding-system)
96 "Encode the STRING as CODING-SYSTEM."
99 (defun decode-coding-region (start end coding-system)
100 "Decode the text between START and END which is encoded in CODING-SYSTEM."
103 (defun encode-coding-region (start end coding-system)
104 "Encode the text between START and END to CODING-SYSTEM."
107 (defun detect-coding-region (start end)
108 "Detect coding-system of the text in the region between START and END."
111 (defun set-buffer-file-coding-system (coding-system &optional force)
112 "Set buffer-file-coding-system of the current buffer to CODING-SYSTEM."
116 ;;; @ without code-conversion
119 (defmacro as-binary-process (&rest body)
120 (` (let (selective-display) ; Disable ^M to nl translation.
123 (defmacro as-binary-input-file (&rest body)
124 (` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
127 (defmacro as-binary-output-file (&rest body)
128 (` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
131 (defun write-region-as-binary (start end filename
132 &optional append visit lockname)
133 "Like `write-region', q.v., but don't code conversion."
134 (let ((emx-binary-mode t))
135 (write-region start end filename append visit lockname)))
137 (defun insert-file-contents-as-binary (filename
138 &optional visit beg end replace)
139 "Like `insert-file-contents', q.v., but don't code and format conversion.
140 Like `insert-file-contents-literary', but it allows find-file-hooks,
141 automatic uncompression, etc.
143 Namely this function ensures that only format decoding and character
144 code conversion will not take place."
145 (let ((emx-binary-mode t))
146 ;; Returns list of absolute file name and length of data inserted.
147 (insert-file-contents filename visit beg end replace)))
149 (defun write-region-as-raw-text-CRLF (start end filename
150 &optional append visit lockname)
151 "Like `write-region', q.v., but write as network representation."
152 (let ((the-buf (current-buffer)))
154 (insert-buffer-substring the-buf start end)
155 (goto-char (point-min))
156 (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
157 (replace-match "\\1\r\n"))
158 (write-region (point-min)(point-max) filename append visit lockname))))
160 (defalias 'insert-file-contents-as-raw-text 'insert-file-contents)
162 (defalias 'insert-file-contents-as-raw-text-CRLF 'insert-file-contents)
164 (defun find-file-noselect-as-binary (filename &optional nowarn rawfile)
165 "Like `find-file-noselect', q.v., but don't code and format conversion."
166 (let ((emx-binary-mode t))
167 (find-file-noselect filename nowarn rawfile)))
169 (defalias 'find-file-noselect-as-raw-text 'find-file-noselect)
171 (defalias 'find-file-noselect-as-raw-text-CRLF 'find-file-noselect)
173 (defun save-buffer-as-binary (&optional args)
174 "Like `save-buffer', q.v., but don't encode."
175 (let ((emx-binary-mode t))
178 (defun save-buffer-as-raw-text-CRLF (&optional args)
179 "Like `save-buffer', q.v., but save as network representation."
180 (if (buffer-modified-p)
183 (let ((the-buf (current-buffer))
184 (filename (buffer-file-name)))
188 (insert-buffer the-buf)
189 (goto-char (point-min))
190 (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
191 (replace-match "\\1\r\n"))
192 (setq buffer-file-name filename)
194 (set-buffer-modified-p nil)
195 (clear-visited-file-modtime)))))))
197 (defun open-network-stream-as-binary (name buffer host service)
198 "Like `open-network-stream', q.v., but don't code conversion."
199 (let ((emx-binary-mode t))
200 (open-network-stream name buffer host service)))
203 ;;; @ with code-conversion (but actually it might be not done)
206 (defun insert-file-contents-as-coding-system
207 (coding-system filename &optional visit beg end replace)
208 "Like `insert-file-contents', q.v., CODING-SYSTEM the first arg will be
210 (insert-file-contents filename visit beg end replace))
212 (defun write-region-as-coding-system
213 (coding-system start end filename &optional append visit lockname)
214 "Like `write-region', q.v., CODING-SYSTEM the first arg will be ignored."
215 (let (jka-compr-compression-info-list jam-zcat-filename-list)
216 (write-region start end filename append visit lockname)))
218 (defun find-file-noselect-as-coding-system
219 (coding-system filename &optional nowarn rawfile)
220 "Like `find-file-noselect', q.v., CODING-SYSTEM the first arg will be
222 (find-file-noselect filename nowarn rawfile))
224 (defun save-buffer-as-coding-system (coding-system &optional args)
225 "Like `save-buffer', q.v., CODING-SYSTEM the first arg will be ignored."
232 (defun char-charset (char)
233 "Return the character set of char CHAR."
238 (defun char-bytes (char)
239 "Return number of bytes a character in CHAR occupies in a buffer."
242 (defun char-width (char)
243 "Return number of columns a CHAR occupies when displayed."
246 (defun split-char (character)
247 "Return list of charset and one or two position-codes of CHARACTER."
248 (cons (char-charset character) character))
250 (defalias 'char-length 'char-bytes)
252 (defmacro char-next-index (char index)
253 "Return index of character succeeding CHAR whose index is INDEX."
260 (defalias 'string-width 'length)
262 (defun string-to-char-list (str)
263 (mapcar (function identity) str))
265 (defalias 'string-to-int-list 'string-to-char-list)
267 (defalias 'sref 'aref)
269 (defun truncate-string (str width &optional start-column)
270 "Truncate STR to fit in WIDTH columns.
271 Optional non-nil arg START-COLUMN specifies the starting column.
272 \[emu-latin1.el; MULE 2.3 emulating function]"
274 (setq start-column 0))
275 (substring str start-column width))
277 (defalias 'looking-at-as-unibyte 'looking-at)
279 ;;; @@ obsoleted aliases
281 ;;; You should not use them.
283 (defalias 'string-columns 'length)
284 (make-obsolete 'string-columns 'string-width)
292 ;;; poem-ltn1.el ends here