1 ;; Utility functions used both by rmail and rnews
2 ;; Copyright (C) 1985 Free Software Foundation, Inc.
4 ;; This file is part of GNU Emacs.
6 ;; GNU Emacs is free software; you can redistribute it and/or modify
7 ;; it under the terms of the GNU General Public License as published by
8 ;; the Free Software Foundation; either version 1, or (at your option)
11 ;; GNU Emacs is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;; GNU General Public License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GNU Emacs; see the file COPYING. If not, write to
18 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 ;; should be in loaddefs
24 (defvar mail-use-rfc822 nil
25 "*If non-nil, use a full, hairy RFC822 parser on mail addresses.
26 Otherwise, (the default) use a smaller, somewhat faster and
27 often-correct parser.")
29 (defun mail-string-delete (string start end
)
30 "Returns a string containing all of STRING except the part
31 from START (inclusive) to END (exclusive)."
32 (if (null end
) (substring string
0 start
)
33 (concat (substring string
0 start
)
34 (substring string end nil
))))
36 (defun mail-strip-quoted-names (address)
37 "Delete comments and quoted strings in an address list ADDRESS.
38 Also delete leading/trailing whitespace and replace FOO <BAR> with just BAR.
39 Return a modified address list."
41 (progn (require 'rfc822
)
42 (mapconcat 'identity
(rfc822-addresses address
) ", "))
44 (string-match "\\`[ \t\n]*" address
)
45 ;; strip surrounding whitespace
46 (setq address
(substring address
48 (string-match "[ \t\n]*\\'" address
51 ;; Detect nested comments.
52 (if (string-match "[ \t]*(\\([^)\"\\]\\|\\\\.\\|\\\\\n\\)*(" address
)
53 ;; Strip nested comments.
55 (set-buffer (get-buffer-create " *temp*"))
58 (set-syntax-table lisp-mode-syntax-table
)
60 (while (search-forward "(" nil t
)
62 (skip-chars-backward " \t")
63 (delete-region (point)
64 (save-excursion (forward-sexp 1) (point))))
65 (setq address
(buffer-string))
67 ;; Strip non-nested comments an easier way.
68 (while (setq pos
(string-match
69 ;; This doesn't hack rfc822 nested comments
70 ;; `(xyzzy (foo) whinge)' properly. Big deal.
71 "[ \t]*(\\([^)\"\\]\\|\\\\.\\|\\\\\n\\)*)"
74 (mail-string-delete address
77 ;; strip `quoted' names (This is supposed to hack `"Foo Bar" <bar@host>')
79 (while (setq pos
(string-match
80 "[ \t]*\"\\([^\"\\]\\|\\\\.\\|\\\\\n\\)*\"[ \t\n]*"
82 ;; If the next thing is "@", we have "foo bar"@host. Leave it.
83 (if (and (> (length address
) (match-end 0))
84 (= (aref address
(match-end 0)) ?
@))
85 (setq pos
(match-end 0))
87 (mail-string-delete address
89 ;; Retain only part of address in <> delims, if there is such a thing.
90 (while (setq pos
(string-match "\\(,\\|\\`\\)[^,]*<\\([^>,]*>\\)"
92 (let ((junk-beg (match-end 1))
93 (junk-end (match-beginning 2))
94 (close (match-end 0)))
95 (setq address
(mail-string-delete address
(1- close
) close
))
96 (setq address
(mail-string-delete address junk-beg junk-end
))))
99 (or (and (boundp 'rmail-default-dont-reply-to-names
)
100 (not (null rmail-default-dont-reply-to-names
)))
101 (setq rmail-default-dont-reply-to-names
"info-"))
103 ; rmail-dont-reply-to-names is defined in loaddefs
104 (defun rmail-dont-reply-to (userids)
105 "Returns string of mail addresses USERIDS sans any recipients
106 that start with matches for rmail-dont-reply-to-names.
107 Usenet paths ending in an element that matches are removed also."
108 (if (null rmail-dont-reply-to-names
)
109 (setq rmail-dont-reply-to-names
110 (concat (if rmail-default-dont-reply-to-names
111 (concat rmail-default-dont-reply-to-names
"\\|")
113 (concat (regexp-quote (user-original-login-name))
115 (let ((match (concat "\\(^\\|,\\)[ \t\n]*\\([^,\n]*!\\|\\)\\("
116 rmail-dont-reply-to-names
120 (while (setq pos
(string-match match userids
))
121 (if (> pos
0) (setq pos
(1+ pos
)))
123 (if (string-match "[ \t\n,]+" userids
(match-end 0))
129 ;; get rid of any trailing commas
130 (if (setq pos
(string-match "[ ,\t\n]*\\'" userids
))
131 (setq userids
(substring userids
0 pos
)))
132 ;; remove leading spaces. they bother me.
133 (if (string-match "\\s *" userids
)
134 (substring userids
(match-end 0))
137 (defun mail-fetch-field (field-name &optional last all
)
138 "Return the value of the header field FIELD.
139 The buffer is expected to be narrowed to just the headers of the message.
140 If 2nd arg LAST is non-nil, use the last such field if there are several.
141 If 3rd arg ALL is non-nil, concatenate all such fields, with commas between."
143 (goto-char (point-min))
144 (let ((case-fold-search t
)
145 (name (concat "^" (regexp-quote field-name
) "[ \t]*:[ \t]*")))
146 (goto-char (point-min))
149 (while (re-search-forward name nil t
)
150 (let ((opoint (point)))
151 (while (progn (forward-line 1)
152 (looking-at "[ \t]")))
153 (setq value
(concat value
154 (if (string= value
"") "" ", ")
155 (buffer-substring opoint
(1- (point)))))))
156 (and (not (string= value
"")) value
))
157 (if (re-search-forward name nil t
)
159 (if last
(while (re-search-forward name nil t
)))
160 (let ((opoint (point)))
161 (while (progn (forward-line 1)
162 (looking-at "[ \t]")))
163 (buffer-substring opoint
(1- (point))))))))))
165 ;; Parse a list of tokens separated by commas.
166 ;; It runs from point to the end of the visible part of the buffer.
167 ;; Whitespace before or after tokens is ignored,
168 ;; but whitespace within tokens is kept.
169 (defun mail-parse-comma-list ()
172 (skip-chars-forward " ")
175 (skip-chars-forward "^,")
176 (skip-chars-backward " ")
178 (cons (buffer-substring beg
(point))
180 (skip-chars-forward "^,")
181 (skip-chars-forward ", "))
184 (defun mail-comma-list-regexp (labels)
186 (setq pos
(or (string-match "[^ \t]" labels
) 0))
187 ;; Remove leading and trailing whitespace.
188 (setq labels
(substring labels pos
(string-match "[ \t]*$" labels pos
)))
189 ;; Change each comma to \|, and flush surrounding whitespace.
190 (while (setq pos
(string-match "[ \t]*,[ \t]*" labels
))
192 (concat (substring labels
0 pos
)
194 (substring labels
(match-end 0))))))