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date Mon, 13 Aug 2007 08:47:15 +0200
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5:49b78a777eb4 6:27bc7f280385
1 ;;; emu-e19.el --- emu module for Emacs 19 and XEmacs 19
2
3 ;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
4
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Version: $Id: emu-e19.el,v 1.1.1.1 1996/12/18 04:06:19 steve Exp $
7 ;; Keywords: emulation, compatibility, mule, Latin-1
8
9 ;; This file is part of emu.
10
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.
15
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.
20
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.
25
26 ;;; Code:
27
28 ;;; @ version and variant specific features
29 ;;;
30
31 (cond (running-xemacs
32 (require 'emu-xemacs))
33 (running-emacs-19
34 (require 'emu-19)
35 ))
36
37
38 ;;; @ character set
39 ;;;
40
41 (defconst charset-ascii 0 "Character set of ASCII")
42 (defconst charset-latin-iso8859-1 129 "Character set of ISO-8859-1")
43
44 (defun charset-description (charset)
45 "Return description of CHARSET. [emu-e19.el]"
46 (if (< charset 128)
47 (documentation-property 'charset-ascii 'variable-documentation)
48 (documentation-property 'charset-latin-iso8859-1 'variable-documentation)
49 ))
50
51 (defun charset-registry (charset)
52 "Return registry name of CHARSET. [emu-e19.el]"
53 (if (< charset 128)
54 "ASCII"
55 "ISO8859-1"))
56
57 (defun charset-columns (charset)
58 "Return number of columns a CHARSET occupies when displayed.
59 \[emu-e19.el]"
60 1)
61
62 (defun charset-direction (charset)
63 "Return the direction of a character of CHARSET by
64 0 (left-to-right) or 1 (right-to-left). [emu-e19.el]"
65 0)
66
67 (defun find-charset-string (str)
68 "Return a list of charsets in the string.
69 \[emu-e19.el; Mule emulating function]"
70 (if (string-match "[\200-\377]" str)
71 (list charset-latin-iso8859-1)
72 ))
73
74 (defalias 'find-non-ascii-charset-string 'find-charset-string)
75
76 (defun find-charset-region (start end)
77 "Return a list of charsets in the region between START and END.
78 \[emu-e19.el; Mule emulating function]"
79 (if (save-excursion
80 (save-restriction
81 (narrow-to-region start end)
82 (goto-char start)
83 (re-search-forward "[\200-\377]" nil t)
84 ))
85 (list charset-latin-iso8859-1)
86 ))
87
88 (defalias 'find-non-ascii-charset-region 'find-charset-region)
89
90
91 ;;; @ coding-system
92 ;;;
93
94 (defconst *internal* nil)
95 (defconst *ctext* nil)
96 (defconst *noconv* nil)
97
98 (defun decode-coding-string (string coding-system)
99 "Decode the STRING which is encoded in CODING-SYSTEM.
100 \[emu-e19.el; Emacs 20 emulating function]"
101 string)
102
103 (defun encode-coding-string (string coding-system)
104 "Encode the STRING as CODING-SYSTEM.
105 \[emu-e19.el; Emacs 20 emulating function]"
106 string)
107
108 (defun decode-coding-region (start end coding-system)
109 "Decode the text between START and END which is encoded in CODING-SYSTEM.
110 \[emu-e19.el; Emacs 20 emulating function]"
111 0)
112
113 (defun encode-coding-region (start end coding-system)
114 "Encode the text between START and END to CODING-SYSTEM.
115 \[emu-e19.el; Emacs 20 emulating function]"
116 0)
117
118 (defun detect-coding-region (start end)
119 "Detect coding-system of the text in the region between START and END.
120 \[emu-e19.el; Emacs 20 emulating function]"
121 )
122
123 (defun set-buffer-file-coding-system (coding-system &optional force)
124 "Set buffer-file-coding-system of the current buffer to CODING-SYSTEM.
125 \[emu-e19.el; Emacs 20 emulating function]"
126 )
127
128 (defmacro as-binary-process (&rest body)
129 (` (let (selective-display) ; Disable ^M to nl translation.
130 (,@ body)
131 )))
132
133 (defmacro as-binary-input-file (&rest body)
134 (` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
135 (,@ body)
136 )))
137
138
139 ;;; @@ for old MULE emulation
140 ;;;
141
142 (defun code-convert-string (str ic oc)
143 "Convert code in STRING from SOURCE code to TARGET code,
144 On successful converion, returns the result string,
145 else returns nil. [emu-e19.el; old MULE emulating function]"
146 str)
147
148 (defun code-convert-region (beg end ic oc)
149 "Convert code of the text between BEGIN and END from SOURCE
150 to TARGET. On successful conversion returns t,
151 else returns nil. [emu-e19.el; old MULE emulating function]"
152 t)
153
154
155 ;;; @ MIME charset
156 ;;;
157
158 (defvar charsets-mime-charset-alist
159 (list (cons (list charset-ascii) 'us-ascii)))
160
161 (defvar default-mime-charset 'iso-8859-1)
162
163 (defun mime-charset-to-coding-system (charset)
164 (if (stringp charset)
165 (setq charset (intern (downcase charset)))
166 )
167 (and (memq charset (list 'us-ascii default-mime-charset))
168 charset)
169 )
170
171 (defun detect-mime-charset-region (start end)
172 "Return MIME charset for region between START and END.
173 \[emu-e19.el]"
174 (if (save-excursion
175 (save-restriction
176 (narrow-to-region start end)
177 (goto-char start)
178 (re-search-forward "[\200-\377]" nil t)
179 ))
180 default-mime-charset
181 'us-ascii))
182
183 (defun encode-mime-charset-region (start end charset)
184 "Encode the text between START and END as MIME CHARSET.
185 \[emu-e19.el]"
186 )
187
188 (defun decode-mime-charset-region (start end charset)
189 "Decode the text between START and END as MIME CHARSET.
190 \[emu-e19.el]"
191 )
192
193 (defun encode-mime-charset-string (string charset)
194 "Encode the STRING as MIME CHARSET. [emu-e19.el]"
195 string)
196
197 (defun decode-mime-charset-string (string charset)
198 "Decode the STRING as MIME CHARSET. [emu-e19.el]"
199 string)
200
201
202 ;;; @ character
203 ;;;
204
205 (defun char-charset (chr)
206 "Return the character set of char CHR.
207 \[emu-e19.el; XEmacs 20 emulating function]"
208 (if (< chr 128)
209 charset-ascii
210 charset-latin-iso8859-1))
211
212 (defun char-bytes (char)
213 "Return number of bytes a character in CHAR occupies in a buffer.
214 \[emu-e19.el; MULE emulating function]"
215 1)
216
217 (defalias 'char-length 'char-bytes)
218
219 (defun char-columns (character)
220 "Return number of columns a CHARACTER occupies when displayed.
221 \[emu-e19.el]"
222 1)
223
224 ;;; @@ for old MULE emulation
225 ;;;
226
227 (defalias 'char-width 'char-columns)
228
229 (defalias 'char-leading-char 'char-charset)
230
231
232 ;;; @ string
233 ;;;
234
235 (defalias 'string-columns 'length)
236
237 (defun string-to-char-list (str)
238 (mapcar (function identity) str)
239 )
240
241 (defalias 'string-to-int-list 'string-to-char-list)
242
243 (defalias 'sref 'aref)
244
245 (defun truncate-string (str width &optional start-column)
246 "Truncate STR to fit in WIDTH columns.
247 Optional non-nil arg START-COLUMN specifies the starting column.
248 \[emu-e19.el; MULE 2.3 emulating function]"
249 (or start-column
250 (setq start-column 0))
251 (substring str start-column width)
252 )
253
254 ;;; @@ for old MULE emulation
255 ;;;
256
257 (defalias 'string-width 'length)
258
259
260 ;;; @ end
261 ;;;
262
263 (provide 'emu-e19)
264
265 ;;; emu-e19.el ends here