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std11.el
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std11.el
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;;; std11.el --- STD 11 functions for GNU Emacs
;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Keywords: mail, news, RFC 822, STD 11
;; Version: $Id$
;; This file is part of MU (Message Utilities).
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2, or (at
;; your option) any later version.
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
(autoload 'buffer-substring-no-properties "emu")
(autoload 'member "emu")
;;; @ field
;;;
(defconst std11-field-name-regexp "[!-9;-~]+")
(defconst std11-field-head-regexp
(concat "^" std11-field-name-regexp ":"))
(defconst std11-next-field-head-regexp
(concat "\n" std11-field-name-regexp ":"))
(defun std11-field-end ()
"Move to end of field and return this point. [std11.el]"
(if (re-search-forward std11-next-field-head-regexp nil t)
(goto-char (match-beginning 0))
(if (re-search-forward "^$" nil t)
(goto-char (1- (match-beginning 0)))
(end-of-line)
))
(point)
)
(defun std11-field-body (name &optional boundary)
"Return body of field NAME.
If BOUNDARY is not nil, it is used as message header separator.
\[std11.el]"
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(goto-char (point-min))
(let ((case-fold-search t))
(if (re-search-forward (concat "^" name ":[ \t]*") nil t)
(buffer-substring-no-properties (match-end 0) (std11-field-end))
)))))
(defun std11-find-field-body (field-names &optional boundary)
"Return the first found field-body specified by FIELD-NAMES
of the message header in current buffer. If BOUNDARY is not nil, it is
used as message header separator. [std11.el]"
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(let ((case-fold-search t)
field-name)
(catch 'tag
(while (setq field-name (car field-names))
(goto-char (point-min))
(if (re-search-forward (concat "^" field-name ":[ \t]*") nil t)
(throw 'tag
(buffer-substring-no-properties
(match-end 0) (std11-field-end)))
)
(setq field-names (cdr field-names))
))))))
(defun std11-field-bodies (field-names &optional default-value boundary)
"Return list of each field-bodies of FIELD-NAMES of the message header
in current buffer. If BOUNDARY is not nil, it is used as message
header separator. [std11.el]"
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(let* ((case-fold-search t)
(dest (make-list (length field-names) default-value))
(s-rest field-names)
(d-rest dest)
field-name)
(while (setq field-name (car s-rest))
(goto-char (point-min))
(if (re-search-forward (concat "^" field-name ":[ \t]*") nil t)
(setcar d-rest
(buffer-substring-no-properties
(match-end 0) (std11-field-end)))
)
(setq s-rest (cdr s-rest)
d-rest (cdr d-rest))
)
dest))))
;;; @ unfolding
;;;
(defun std11-unfold-string (string)
"Unfold STRING as message header field. [std11.el]"
(let ((dest ""))
(while (string-match "\n\\([ \t]\\)" string)
(setq dest (concat dest
(substring string 0 (match-beginning 0))
(match-string 1 string)
))
(setq string (substring string (match-end 0)))
)
(concat dest string)
))
;;; @ header
;;;
(defun std11-narrow-to-header (&optional boundary)
"Narrow to the message header.
If BOUNDARY is not nil, it is used as message header separator.
\[std11.el]"
(narrow-to-region
(goto-char (point-min))
(if (re-search-forward
(concat "^\\(" (regexp-quote (or boundary "")) "\\)?$")
nil t)
(match-beginning 0)
(point-max)
)))
(defun std11-header-string (regexp &optional boundary)
"Return string of message header fields matched by REGEXP.
If BOUNDARY is not nil, it is used as message header separator.
\[std11.el]"
(let ((case-fold-search t))
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(goto-char (point-min))
(let (field header)
(while (re-search-forward std11-field-head-regexp nil t)
(setq field
(buffer-substring (match-beginning 0) (std11-field-end)))
(if (string-match regexp field)
(setq header (concat header field "\n"))
))
header)
))))
(defun std11-header-string-except (regexp &optional boundary)
"Return string of message header fields not matched by REGEXP.
If BOUNDARY is not nil, it is used as message header separator.
\[std11.el]"
(let ((case-fold-search t))
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(goto-char (point-min))
(let (field header)
(while (re-search-forward std11-field-head-regexp nil t)
(setq field
(buffer-substring (match-beginning 0) (std11-field-end)))
(if (not (string-match regexp field))
(setq header (concat header field "\n"))
))
header)
))))
(defun std11-collect-field-names (&optional boundary)
"Return list of all field-names of the message header in current buffer.
If BOUNDARY is not nil, it is used as message header separator.
\[std11.el]"
(save-excursion
(save-restriction
(std11-narrow-to-header boundary)
(goto-char (point-min))
(let (dest name)
(while (re-search-forward std11-field-head-regexp nil t)
(setq name (buffer-substring-no-properties
(match-beginning 0)(1- (match-end 0))))
(or (member name dest)
(setq dest (cons name dest))
)
)
dest))))
;;; @ quoted-string
;;;
(defun std11-wrap-as-quoted-pairs (string specials)
(let (dest
(i 0)
(b 0)
(len (length string))
)
(while (< i len)
(let ((chr (aref string i)))
(if (memq chr specials)
(setq dest (concat dest (substring string b i) "\\")
b i)
))
(setq i (1+ i))
)
(concat dest (substring string b))
))
(defconst std11-non-qtext-char-list '(?\" ?\\ ?\r ?\n))
(defun std11-wrap-as-quoted-string (string)
"Wrap STRING as RFC 822 quoted-string. [std11.el]"
(concat "\""
(std11-wrap-as-quoted-pairs string std11-non-qtext-char-list)
"\""))
(defun std11-strip-quoted-pair (string)
"Strip quoted-pairs in STRING. [std11.el]"
(let (dest
(b 0)
(i 0)
(len (length string))
)
(while (< i len)
(let ((chr (aref string i)))
(if (eq chr ?\\)
(setq dest (concat dest (substring string b i))
b (1+ i)
i (+ i 2))
(setq i (1+ i))
)))
(concat dest (substring string b))
))
(defun std11-strip-quoted-string (string)
"Strip quoted-string STRING. [std11.el]"
(let ((len (length string)))
(or (and (>= len 2)
(let ((max (1- len)))
(and (eq (aref string 0) ?\")
(eq (aref string max) ?\")
(std11-strip-quoted-pair (substring string 1 max))
)))
string)))
;;; @ composer
;;;
(defun std11-addr-to-string (seq)
"Return string from lexical analyzed list SEQ
represents addr-spec of RFC 822. [std11.el]"
(mapconcat (function
(lambda (token)
(let ((name (car token)))
(cond
((eq name 'spaces) "")
((eq name 'comment) "")
((eq name 'quoted-string)
(concat "\"" (cdr token) "\""))
(t (cdr token)))
)))
seq "")
)
(defun std11-address-string (address)
"Return string of address part from parsed ADDRESS of RFC 822.
\[std11.el]"
(cond ((eq (car address) 'group)
(mapconcat (function std11-address-string)
(car (cdr address))
", ")
)
((eq (car address) 'mailbox)
(let ((addr (nth 1 address)))
(std11-addr-to-string
(if (eq (car addr) 'phrase-route-addr)
(nth 2 addr)
(cdr addr)
)
)))))
(defun std11-full-name-string (address)
"Return string of full-name part from parsed ADDRESS of RFC 822.
\[std11.el]"
(cond ((eq (car address) 'group)
(mapconcat (function
(lambda (token)
(cdr token)
))
(nth 1 address) "")
)
((eq (car address) 'mailbox)
(let ((addr (nth 1 address))
(comment (nth 2 address))
phrase)
(if (eq (car addr) 'phrase-route-addr)
(setq phrase
(mapconcat
(function
(lambda (token)
(let ((type (car token)))
(cond ((eq type 'quoted-string)
(std11-strip-quoted-pair (cdr token))
)
((eq type 'comment)
(concat
"("
(std11-strip-quoted-pair (cdr token))
")")
)
(t
(cdr token)
)))))
(nth 1 addr) ""))
)
(cond ((> (length phrase) 0) phrase)
(comment (std11-strip-quoted-pair comment))
)
))))
(defun std11-msg-id-string (msg-id)
"Return string from parsed MSG-ID of RFC 822."
(concat "<" (std11-addr-to-string (cdr msg-id)) ">")
)
(defun std11-fill-msg-id-list-string (string &optional column)
"Fill list of msg-id in STRING, and return the result."
(or column
(setq column 12))
(let ((lal (std11-lexical-analyze string))
dest)
(let ((ret (std11-parse-msg-id lal)))
(if ret
(let* ((str (std11-msg-id-string (car ret)))
(len (length str)))
(setq lal (cdr ret))
(if (> (+ len column) 76)
(setq dest (concat dest "\n " str)
column (1+ len))
(setq dest str
column (+ column len))
))
(setq dest (concat dest (cdr (car lal)))
lal (cdr lal))
))
(while lal
(let ((ret (std11-parse-msg-id lal)))
(if ret
(let* ((str (std11-msg-id-string (car ret)))
(len (1+ (length str))))
(setq lal (cdr ret))
(if (> (+ len column) 76)
(setq dest (concat dest "\n " str)
column len)
(setq dest (concat dest " " str)
column (+ column len))
))
(setq dest (concat dest (cdr (car lal)))
lal (cdr lal))
)))
dest))
;;; @ parser
;;;
(defun std11-parse-address-string (string)
"Parse STRING as mail address. [std11.el]"
(std11-parse-address (std11-lexical-analyze string))
)
(defun std11-parse-addresses-string (string)
"Parse STRING as mail address list. [std11.el]"
(std11-parse-addresses (std11-lexical-analyze string))
)
(defun std11-extract-address-components (string)
"Extract full name and canonical address from STRING.
Returns a list of the form (FULL-NAME CANONICAL-ADDRESS).
If no name can be extracted, FULL-NAME will be nil. [std11.el]"
(let* ((structure (car (std11-parse-address-string
(std11-unfold-string string))))
(phrase (std11-full-name-string structure))
(address (std11-address-string structure))
)
(list phrase address)
))
(provide 'std11)
(mapcar (function
(lambda (func)
(autoload func "std11-parse")
))
'(std11-lexical-analyze
std11-parse-address std11-parse-addresses
std11-parse-address-string))
;;; @ end
;;;
;;; std11.el ends here