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date Mon, 13 Aug 2007 09:39:39 +0200
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154:94141801dd7e 155:43dd3413c7c7
1 ;;; std11.el --- STD 11 functions for GNU Emacs
2
3 ;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
4
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Keywords: mail, news, RFC 822, STD 11
7 ;; Version: $Id: std11.el,v 1.1 1997/06/03 04:18:36 steve Exp $
8
9 ;; This file is part of MU (Message Utilities).
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 (autoload 'buffer-substring-no-properties "emu")
29 (autoload 'member "emu")
30
31
32 ;;; @ field
33 ;;;
34
35 (defconst std11-field-name-regexp "[!-9;-~]+")
36 (defconst std11-field-head-regexp
37 (concat "^" std11-field-name-regexp ":"))
38 (defconst std11-next-field-head-regexp
39 (concat "\n" std11-field-name-regexp ":"))
40
41 (defun std11-field-end ()
42 "Move to end of field and return this point. [std11.el]"
43 (if (re-search-forward std11-next-field-head-regexp nil t)
44 (goto-char (match-beginning 0))
45 (if (re-search-forward "^$" nil t)
46 (goto-char (1- (match-beginning 0)))
47 (end-of-line)
48 ))
49 (point)
50 )
51
52 (defun std11-field-body (name &optional boundary)
53 "Return body of field NAME.
54 If BOUNDARY is not nil, it is used as message header separator.
55 \[std11.el]"
56 (save-excursion
57 (save-restriction
58 (std11-narrow-to-header boundary)
59 (goto-char (point-min))
60 (let ((case-fold-search t))
61 (if (re-search-forward (concat "^" name ":[ \t]*") nil t)
62 (buffer-substring-no-properties (match-end 0) (std11-field-end))
63 )))))
64
65 (defun std11-find-field-body (field-names &optional boundary)
66 "Return the first found field-body specified by FIELD-NAMES
67 of the message header in current buffer. If BOUNDARY is not nil, it is
68 used as message header separator. [std11.el]"
69 (save-excursion
70 (save-restriction
71 (std11-narrow-to-header boundary)
72 (let ((case-fold-search t)
73 field-name)
74 (catch 'tag
75 (while (setq field-name (car field-names))
76 (goto-char (point-min))
77 (if (re-search-forward (concat "^" field-name ":[ \t]*") nil t)
78 (throw 'tag
79 (buffer-substring-no-properties
80 (match-end 0) (std11-field-end)))
81 )
82 (setq field-names (cdr field-names))
83 ))))))
84
85 (defun std11-field-bodies (field-names &optional default-value boundary)
86 "Return list of each field-bodies of FIELD-NAMES of the message header
87 in current buffer. If BOUNDARY is not nil, it is used as message
88 header separator. [std11.el]"
89 (save-excursion
90 (save-restriction
91 (std11-narrow-to-header boundary)
92 (let* ((case-fold-search t)
93 (dest (make-list (length field-names) default-value))
94 (s-rest field-names)
95 (d-rest dest)
96 field-name)
97 (while (setq field-name (car s-rest))
98 (goto-char (point-min))
99 (if (re-search-forward (concat "^" field-name ":[ \t]*") nil t)
100 (setcar d-rest
101 (buffer-substring-no-properties
102 (match-end 0) (std11-field-end)))
103 )
104 (setq s-rest (cdr s-rest)
105 d-rest (cdr d-rest))
106 )
107 dest))))
108
109
110 ;;; @ unfolding
111 ;;;
112
113 (defun std11-unfold-string (string)
114 "Unfold STRING as message header field. [std11.el]"
115 (let ((dest ""))
116 (while (string-match "\n\\([ \t]\\)" string)
117 (setq dest (concat dest
118 (substring string 0 (match-beginning 0))
119 (match-string 1 string)
120 ))
121 (setq string (substring string (match-end 0)))
122 )
123 (concat dest string)
124 ))
125
126
127 ;;; @ header
128 ;;;
129
130 (defun std11-narrow-to-header (&optional boundary)
131 "Narrow to the message header.
132 If BOUNDARY is not nil, it is used as message header separator.
133 \[std11.el]"
134 (narrow-to-region
135 (goto-char (point-min))
136 (if (re-search-forward
137 (concat "^\\(" (regexp-quote (or boundary "")) "\\)?$")
138 nil t)
139 (match-beginning 0)
140 (point-max)
141 )))
142
143 (defun std11-header-string (regexp &optional boundary)
144 "Return string of message header fields matched by REGEXP.
145 If BOUNDARY is not nil, it is used as message header separator.
146 \[std11.el]"
147 (let ((case-fold-search t))
148 (save-excursion
149 (save-restriction
150 (std11-narrow-to-header boundary)
151 (goto-char (point-min))
152 (let (field header)
153 (while (re-search-forward std11-field-head-regexp nil t)
154 (setq field
155 (buffer-substring (match-beginning 0) (std11-field-end)))
156 (if (string-match regexp field)
157 (setq header (concat header field "\n"))
158 ))
159 header)
160 ))))
161
162 (defun std11-header-string-except (regexp &optional boundary)
163 "Return string of message header fields not matched by REGEXP.
164 If BOUNDARY is not nil, it is used as message header separator.
165 \[std11.el]"
166 (let ((case-fold-search t))
167 (save-excursion
168 (save-restriction
169 (std11-narrow-to-header boundary)
170 (goto-char (point-min))
171 (let (field header)
172 (while (re-search-forward std11-field-head-regexp nil t)
173 (setq field
174 (buffer-substring (match-beginning 0) (std11-field-end)))
175 (if (not (string-match regexp field))
176 (setq header (concat header field "\n"))
177 ))
178 header)
179 ))))
180
181 (defun std11-collect-field-names (&optional boundary)
182 "Return list of all field-names of the message header in current buffer.
183 If BOUNDARY is not nil, it is used as message header separator.
184 \[std11.el]"
185 (save-excursion
186 (save-restriction
187 (std11-narrow-to-header boundary)
188 (goto-char (point-min))
189 (let (dest name)
190 (while (re-search-forward std11-field-head-regexp nil t)
191 (setq name (buffer-substring-no-properties
192 (match-beginning 0)(1- (match-end 0))))
193 (or (member name dest)
194 (setq dest (cons name dest))
195 )
196 )
197 dest))))
198
199
200 ;;; @ quoted-string
201 ;;;
202
203 (defun std11-wrap-as-quoted-pairs (string specials)
204 (let (dest
205 (i 0)
206 (b 0)
207 (len (length string))
208 )
209 (while (< i len)
210 (let ((chr (aref string i)))
211 (if (memq chr specials)
212 (setq dest (concat dest (substring string b i) "\\")
213 b i)
214 ))
215 (setq i (1+ i))
216 )
217 (concat dest (substring string b))
218 ))
219
220 (defconst std11-non-qtext-char-list '(?\" ?\\ ?\r ?\n))
221
222 (defun std11-wrap-as-quoted-string (string)
223 "Wrap STRING as RFC 822 quoted-string. [std11.el]"
224 (concat "\""
225 (std11-wrap-as-quoted-pairs string std11-non-qtext-char-list)
226 "\""))
227
228 (defun std11-strip-quoted-pair (string)
229 "Strip quoted-pairs in STRING. [std11.el]"
230 (let (dest
231 (b 0)
232 (i 0)
233 (len (length string))
234 )
235 (while (< i len)
236 (let ((chr (aref string i)))
237 (if (eq chr ?\\)
238 (setq dest (concat dest (substring string b i))
239 b (1+ i)
240 i (+ i 2))
241 (setq i (1+ i))
242 )))
243 (concat dest (substring string b))
244 ))
245
246 (defun std11-strip-quoted-string (string)
247 "Strip quoted-string STRING. [std11.el]"
248 (let ((len (length string)))
249 (or (and (>= len 2)
250 (let ((max (1- len)))
251 (and (eq (aref string 0) ?\")
252 (eq (aref string max) ?\")
253 (std11-strip-quoted-pair (substring string 1 max))
254 )))
255 string)))
256
257
258 ;;; @ composer
259 ;;;
260
261 (defun std11-addr-to-string (seq)
262 "Return string from lexical analyzed list SEQ
263 represents addr-spec of RFC 822. [std11.el]"
264 (mapconcat (function
265 (lambda (token)
266 (let ((name (car token)))
267 (cond
268 ((eq name 'spaces) "")
269 ((eq name 'comment) "")
270 ((eq name 'quoted-string)
271 (concat "\"" (cdr token) "\""))
272 (t (cdr token)))
273 )))
274 seq "")
275 )
276
277 (defun std11-address-string (address)
278 "Return string of address part from parsed ADDRESS of RFC 822.
279 \[std11.el]"
280 (cond ((eq (car address) 'group)
281 (mapconcat (function std11-address-string)
282 (car (cdr address))
283 ", ")
284 )
285 ((eq (car address) 'mailbox)
286 (let ((addr (nth 1 address)))
287 (std11-addr-to-string
288 (if (eq (car addr) 'phrase-route-addr)
289 (nth 2 addr)
290 (cdr addr)
291 )
292 )))))
293
294 (defun std11-full-name-string (address)
295 "Return string of full-name part from parsed ADDRESS of RFC 822.
296 \[std11.el]"
297 (cond ((eq (car address) 'group)
298 (mapconcat (function
299 (lambda (token)
300 (cdr token)
301 ))
302 (nth 1 address) "")
303 )
304 ((eq (car address) 'mailbox)
305 (let ((addr (nth 1 address))
306 (comment (nth 2 address))
307 phrase)
308 (if (eq (car addr) 'phrase-route-addr)
309 (setq phrase
310 (mapconcat
311 (function
312 (lambda (token)
313 (let ((type (car token)))
314 (cond ((eq type 'quoted-string)
315 (std11-strip-quoted-pair (cdr token))
316 )
317 ((eq type 'comment)
318 (concat
319 "("
320 (std11-strip-quoted-pair (cdr token))
321 ")")
322 )
323 (t
324 (cdr token)
325 )))))
326 (nth 1 addr) ""))
327 )
328 (cond ((> (length phrase) 0) phrase)
329 (comment (std11-strip-quoted-pair comment))
330 )
331 ))))
332
333
334 ;;; @ parser
335 ;;;
336
337 (defun std11-parse-address-string (string)
338 "Parse STRING as mail address. [std11.el]"
339 (std11-parse-address (std11-lexical-analyze string))
340 )
341
342 (defun std11-parse-addresses-string (string)
343 "Parse STRING as mail address list. [std11.el]"
344 (std11-parse-addresses (std11-lexical-analyze string))
345 )
346
347 (defun std11-extract-address-components (string)
348 "Extract full name and canonical address from STRING.
349 Returns a list of the form (FULL-NAME CANONICAL-ADDRESS).
350 If no name can be extracted, FULL-NAME will be nil. [std11.el]"
351 (let* ((structure (car (std11-parse-address-string
352 (std11-unfold-string string))))
353 (phrase (std11-full-name-string structure))
354 (address (std11-address-string structure))
355 )
356 (list phrase address)
357 ))
358
359 (provide 'std11)
360
361 (mapcar (function
362 (lambda (func)
363 (autoload func "std11-parse")
364 ))
365 '(std11-lexical-analyze
366 std11-parse-address std11-parse-addresses
367 std11-parse-address-string))
368
369
370 ;;; @ end
371 ;;;
372
373 ;;; std11.el ends here