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
30 (defun-maybe set-buffer-multibyte (flag)
31 "Set the multibyte flag of the current buffer to FLAG.
32 If FLAG is t, this makes the buffer a multibyte buffer.
33 If FLAG is nil, this makes the buffer a single-byte buffer.
34 The buffer contents remain unchanged as a sequence of bytes
35 but the contents viewed as characters do change.
36 \[Emacs 20.3 emulating macro]"
43 (put 'ascii 'charset-description "Character set of ASCII")
44 (put 'ascii 'charset-registry "ASCII")
46 (put 'latin-iso8859-1 'charset-description "Character set of ISO-8859-1")
47 (put 'latin-iso8859-1 'charset-registry "ISO8859-1")
49 (defun charset-description (charset)
50 "Return description of CHARSET."
51 (get charset 'charset-description))
53 (defun charset-registry (charset)
54 "Return registry name of CHARSET."
55 (get charset 'charset-registry))
57 (defun charset-width (charset)
58 "Return number of columns a CHARSET occupies when displayed."
61 (defun charset-direction (charset)
62 "Return the direction of a character of CHARSET by
63 0 (left-to-right) or 1 (right-to-left)."
66 (defun find-charset-string (str)
67 "Return a list of charsets in the string."
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."
78 (re-search-forward "[\200-\377]" end t))
82 (defalias 'find-non-ascii-charset-region 'find-charset-region)
88 (defun decode-coding-string (string coding-system)
89 "Decode the STRING which is encoded in CODING-SYSTEM."
92 (defun encode-coding-string (string coding-system)
93 "Encode the STRING as CODING-SYSTEM."
96 (defun decode-coding-region (start end coding-system)
97 "Decode the text between START and END which is encoded in CODING-SYSTEM."
100 (defun encode-coding-region (start end coding-system)
101 "Encode the text between START and END to CODING-SYSTEM."
104 (defun detect-coding-region (start end)
105 "Detect coding-system of the text in the region between START and END."
108 (defun set-buffer-file-coding-system (coding-system &optional force)
109 "Set buffer-file-coding-system of the current buffer to CODING-SYSTEM."
113 ;;; @ without code-conversion
116 (defmacro as-binary-process (&rest body)
117 (` (let (selective-display) ; Disable ^M to nl translation.
120 (defmacro as-binary-input-file (&rest body)
121 (` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
124 (defmacro as-binary-output-file (&rest body)
125 (` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
128 (defun write-region-as-binary (start end filename
129 &optional append visit lockname)
130 "Like `write-region', q.v., but don't code conversion."
131 (let ((emx-binary-mode t))
132 (write-region start end filename append visit lockname)))
134 (defun insert-file-contents-as-binary (filename
135 &optional visit beg end replace)
136 "Like `insert-file-contents', q.v., but don't code and format conversion.
137 Like `insert-file-contents-literary', but it allows find-file-hooks,
138 automatic uncompression, etc.
140 Namely this function ensures that only format decoding and character
141 code conversion will not take place."
142 (let ((emx-binary-mode t))
143 ;; Returns list of absolute file name and length of data inserted.
144 (insert-file-contents filename visit beg end replace)))
146 (defun write-region-as-raw-text-CRLF (start end filename
147 &optional append visit lockname)
148 "Like `write-region', q.v., but write as network representation."
149 (let ((the-buf (current-buffer)))
151 (insert-buffer-substring the-buf start end)
152 (goto-char (point-min))
153 (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
154 (replace-match "\\1\r\n"))
155 (write-region (point-min)(point-max) filename append visit lockname))))
157 (defalias 'insert-file-contents-as-raw-text 'insert-file-contents)
159 (defun find-file-noselect-as-binary (filename &optional nowarn rawfile)
160 "Like `find-file-noselect', q.v., but don't code and format conversion."
161 (let ((emx-binary-mode t))
162 (find-file-noselect filename nowarn rawfile)))
164 (defalias find-file-noselect-as-raw-text 'find-file-noselect)
166 (defun open-network-stream-as-binary (name buffer host service)
167 "Like `open-network-stream', q.v., but don't code conversion."
168 (let ((emx-binary-mode t))
169 (open-network-stream name buffer host service)))
172 ;;; @ with code-conversion (but actually it might be not done)
175 (defun insert-file-contents-as-specified-coding-system (filename &rest args)
176 "Like `insert-file-contents', q.v., but code convert by the specified
177 coding-system. ARGS the optional arguments are passed to
178 `insert-file-contents' except for the last element. The last element of
179 ARGS must be a coding-system."
180 (apply 'insert-file-contents filename (nreverse (cdr (nreverse args)))))
182 (defun write-region-as-specified-coding-system (start end filename
184 "Like `write-region', q.v., but code convert by the specified coding-system.
185 ARGS the optional arguments are passed to `write-region' except for the last
186 element. The last element of ARGS must be a coding-system."
187 (let (jka-compr-compression-info-list jam-zcat-filename-list)
188 (apply 'write-region start end filename
189 (nreverse (cdr (nreverse args))))))
191 (defun find-file-noselect-as-specified-coding-system (filename &optional args)
192 "Like `find-file-noselect', q.v., but code convert by the specified
193 coding-system. ARGS the optional arguments are passed to `find-file-noselect'
194 except for the last element. The last element of ARGS must be a
196 (apply' find-file-noselect filename (nreverse (cdr (nreverse args)))))
202 (defun char-charset (char)
203 "Return the character set of char CHAR."
208 (defun char-bytes (char)
209 "Return number of bytes a character in CHAR occupies in a buffer."
212 (defun char-width (char)
213 "Return number of columns a CHAR occupies when displayed."
216 (defun split-char (character)
217 "Return list of charset and one or two position-codes of CHARACTER."
218 (cons (char-charset character) character))
220 (defalias 'char-length 'char-bytes)
222 (defmacro char-next-index (char index)
223 "Return index of character succeeding CHAR whose index is INDEX."
230 (defalias 'string-width 'length)
232 (defun string-to-char-list (str)
233 (mapcar (function identity) str))
235 (defalias 'string-to-int-list 'string-to-char-list)
237 (defalias 'sref 'aref)
239 (defun truncate-string (str width &optional start-column)
240 "Truncate STR to fit in WIDTH columns.
241 Optional non-nil arg START-COLUMN specifies the starting column.
242 \[emu-latin1.el; MULE 2.3 emulating function]"
244 (setq start-column 0))
245 (substring str start-column width))
247 (defalias 'looking-at-as-unibyte 'looking-at)
249 ;;; @@ obsoleted aliases
251 ;;; You should not use them.
253 (defalias 'string-columns 'length)
254 (make-obsolete 'string-columns 'string-width)
262 ;;; poem-ltn1.el ends here