/usr/share/emacs/site-lisp/flim/eword-decode.el is in flim 1:1.14.9+0.20110516-1.
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;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
;; 2005 Free Software Foundation, Inc.
;; Author: ENAMI Tsugutomo <enami@sys.ptg.sony.co.jp>
;; MORIOKA Tomohiko <tomo@m17n.org>
;; TANAKA Akira <akr@m17n.org>
;; Created: 1995/10/03
;; Original: 1992/07/20 ENAMI Tsugutomo's `mime.el'.
;; Renamed: 1993/06/03 to tiny-mime.el by MORIOKA Tomohiko
;; Renamed: 1995/10/03 to tm-ew-d.el (split off encoder)
;; by MORIOKA Tomohiko
;; Renamed: 1997/02/22 from tm-ew-d.el by MORIOKA Tomohiko
;; Keywords: encoded-word, MIME, multilingual, header, mail, news
;; This file is part of FLIM (Faithful Library about Internet Message).
;; 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., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'mime-def)
(require 'mel)
(require 'std11)
(eval-when-compile (require 'cl)) ; list*, pop
;;; @ Variables
;;;
;; User options are defined in mime-def.el.
;;; @ MIME encoded-word definition
;;;
(eval-and-compile
(defconst eword-encoded-text-regexp "[!->@-~]+")
(defconst eword-encoded-word-regexp
(eval-when-compile
(concat (regexp-quote "=?")
"\\("
mime-charset-regexp ; 1
"\\)"
"\\("
(regexp-quote "*")
mime-language-regexp ; 2
"\\)?"
(regexp-quote "?")
"\\("
mime-encoding-regexp ; 3
"\\)"
(regexp-quote "?")
"\\("
eword-encoded-text-regexp ; 4
"\\)"
(regexp-quote "?="))))
)
;;; @ for string
;;;
(defun eword-decode-string (string &optional must-unfold)
"Decode MIME encoded-words in STRING.
STRING is unfolded before decoding.
If an encoded-word is broken or your emacs implementation can not
decode the charset included in it, it is not decoded.
If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
if there are in decoded encoded-words (generated by bad manner MUA
such as a version of Net$cape).
The language informations specified in the encoded words, if any, are
put to the decoded text as the `mime-language' text property."
(setq string (std11-unfold-string string))
(let ((regexp (concat "[\n\t ]*\\(" eword-encoded-word-regexp "\\)"))
(next 0)
match start words)
(while (setq match (string-match regexp string next))
(setq start (match-beginning 1)
words nil)
(while match
(setq next (match-end 0))
(push (list (match-string 2 string) ;; charset
(when (match-beginning 3) ;; language
(intern
(downcase
(substring string
(1+ (match-beginning 3)) (match-end 3)))))
(match-string 4 string) ;; encoding
(match-string 5 string) ;; encoded-text
(match-string 1 string)) ;; encoded-word
words)
(setq match (and (string-match regexp string next)
(= next (match-beginning 0)))))
(setq words (eword-decode-encoded-words (nreverse words) must-unfold)
string (concat (substring string 0 start)
words
(substring string next))
next (+ start (length words)))))
string)
(defun eword-decode-structured-field-body (string
&optional start-column max-column
start)
(let ((tokens (eword-lexical-analyze string start 'must-unfold))
(result "")
token)
(while tokens
(setq token (car tokens))
(setq result (concat result (eword-decode-token token)))
(setq tokens (cdr tokens)))
result))
(defun eword-decode-and-unfold-structured-field-body (string
&optional
start-column
max-column
start)
"Decode and unfold STRING as structured field body.
It decodes non us-ascii characters in FULL-NAME encoded as
encoded-words or invalid \"raw\" string. \"Raw\" non us-ascii
characters are regarded as variable `default-mime-charset'.
If an encoded-word is broken or your emacs implementation can not
decode the charset included in it, it is not decoded."
(let ((tokens (eword-lexical-analyze string start 'must-unfold))
(result ""))
(while tokens
(let* ((token (car tokens))
(type (car token)))
(setq tokens (cdr tokens))
(setq result
(if (eq type 'spaces)
(concat result " ")
(concat result (eword-decode-token token))
))))
result))
(defun eword-decode-and-fold-structured-field-body (string
start-column
&optional max-column
start)
(if (and mime-field-decoding-max-size
(> (length string) mime-field-decoding-max-size))
string
(or max-column
(setq max-column fill-column))
(let ((c start-column)
(tokens (eword-lexical-analyze string start 'must-unfold))
(result "")
token)
(while (and (setq token (car tokens))
(setq tokens (cdr tokens)))
(let* ((type (car token)))
(if (eq type 'spaces)
(let* ((next-token (car tokens))
(next-str (eword-decode-token next-token))
(next-len (string-width next-str))
(next-c (+ c next-len 1)))
(if (< next-c max-column)
(setq result (concat result " " next-str)
c next-c)
(setq result (concat result "\n " next-str)
c (1+ next-len)))
(setq tokens (cdr tokens))
)
(let* ((str (eword-decode-token token)))
(setq result (concat result str)
c (+ c (string-width str)))
))))
(if token
(concat result (eword-decode-token token))
result))))
(defun eword-decode-unstructured-field-body (string &optional start-column
max-column)
(eword-decode-string
(decode-mime-charset-string string default-mime-charset)))
(defun eword-decode-and-unfold-unstructured-field-body (string
&optional start-column
max-column)
(eword-decode-string
(decode-mime-charset-string (std11-unfold-string string)
default-mime-charset)
'must-unfold))
(defun eword-decode-unfolded-unstructured-field-body (string
&optional start-column
max-column)
(eword-decode-string
(decode-mime-charset-string string default-mime-charset)
'must-unfold))
;;; @ for region
;;;
(defun eword-decode-region (start end &optional unfolding must-unfold)
"Decode MIME encoded-words in region between START and END.
If UNFOLDING is not nil, it unfolds before decoding.
If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
if there are in decoded encoded-words (generated by bad manner MUA
such as a version of Net$cape).
The language informations specified in the encoded words, if any, are
put to the decoded text as the `mime-language' text property."
(interactive "*r")
(save-excursion
(save-restriction
(narrow-to-region start end)
(if unfolding
(eword-decode-unfold))
(goto-char (point-min))
(let ((regexp (concat "[\n\t ]*\\(" eword-encoded-word-regexp "\\)"))
match words)
(while (setq match (re-search-forward regexp nil t))
(setq start (match-beginning 1)
words nil)
(while match
(goto-char (setq end (match-end 0)))
(push (list (match-string 2) ;; charset
(when (match-beginning 3) ;; language
(intern
(downcase
(buffer-substring (1+ (match-beginning 3))
(match-end 3)))))
(match-string 4) ;; encoding
(match-string 5) ;; encoded-text
(match-string 1)) ;; encoded-word
words)
(setq match (looking-at regexp)))
(delete-region start end)
(insert
(eword-decode-encoded-words (nreverse words) must-unfold)))))))
(defun eword-decode-unfold ()
(goto-char (point-min))
(let (field beg end)
(while (re-search-forward std11-field-head-regexp nil t)
(setq beg (match-beginning 0)
end (std11-field-end))
(setq field (buffer-substring beg end))
(if (string-match eword-encoded-word-regexp field)
(save-restriction
(narrow-to-region (goto-char beg) end)
(while (re-search-forward "\n\\([ \t]\\)" nil t)
(replace-match (match-string 1))
)
(goto-char (point-max))
))
)))
;;; @ for message header
;;;
(defvar mime-field-decoder-alist nil)
(defvar mime-field-decoder-cache nil)
(defvar mime-update-field-decoder-cache 'mime-update-field-decoder-cache
"*Field decoder cache update function.")
;;;###autoload
(defun mime-set-field-decoder (field &rest specs)
"Set decoder of FIELD.
SPECS must be like `MODE1 DECODER1 MODE2 DECODER2 ...'.
Each mode must be `nil', `plain', `wide', `summary' or `nov'.
If mode is `nil', corresponding decoder is set up for every modes."
(when specs
(let ((mode (pop specs))
(function (pop specs)))
(if mode
(progn
(let ((cell (assq mode mime-field-decoder-alist)))
(if cell
(setcdr cell (put-alist field function (cdr cell)))
(setq mime-field-decoder-alist
(cons (cons mode (list (cons field function)))
mime-field-decoder-alist))
))
(apply (function mime-set-field-decoder) field specs)
)
(mime-set-field-decoder field
'plain function
'wide function
'summary function
'nov function)
))))
;;;###autoload
(defmacro mime-find-field-presentation-method (name)
"Return field-presentation-method from NAME.
NAME must be `plain', `wide', `summary' or `nov'."
(cond ((eq name nil)
`(or (assq 'summary mime-field-decoder-cache)
'(summary))
)
((and (consp name)
(car name)
(consp (cdr name))
(symbolp (car (cdr name)))
(null (cdr (cdr name))))
`(or (assq ,name mime-field-decoder-cache)
(cons ,name nil))
)
(t
`(or (assq (or ,name 'summary) mime-field-decoder-cache)
(cons (or ,name 'summary) nil))
)))
(defun mime-find-field-decoder-internal (field &optional mode)
"Return function to decode field-body of FIELD in MODE.
Optional argument MODE must be object of field-presentation-method."
(cdr (or (assq field (cdr mode))
(prog1
(funcall mime-update-field-decoder-cache
field (car mode))
(setcdr mode
(cdr (assq (car mode) mime-field-decoder-cache)))
))))
;;;###autoload
(defun mime-find-field-decoder (field &optional mode)
"Return function to decode field-body of FIELD in MODE.
Optional argument MODE must be object or name of
field-presentation-method. Name of field-presentation-method must be
`plain', `wide', `summary' or `nov'.
Default value of MODE is `summary'."
(if (symbolp mode)
(let ((p (cdr (mime-find-field-presentation-method mode))))
(if (and p (setq p (assq field p)))
(cdr p)
(cdr (funcall mime-update-field-decoder-cache
field (or mode 'summary)))))
(inline (mime-find-field-decoder-internal field mode))
))
;;;###autoload
(defun mime-update-field-decoder-cache (field mode &optional function)
"Update field decoder cache `mime-field-decoder-cache'."
(cond ((eq function 'identity)
(setq function nil)
)
((null function)
(let ((decoder-alist
(cdr (assq (or mode 'summary) mime-field-decoder-alist))))
(setq function (cdr (or (assq field decoder-alist)
(assq t decoder-alist)))))
))
(let ((cell (assq mode mime-field-decoder-cache))
ret)
(if cell
(if (setq ret (assq field (cdr cell)))
(setcdr ret function)
(setcdr cell (cons (setq ret (cons field function)) (cdr cell))))
(setq mime-field-decoder-cache
(cons (cons mode (list (setq ret (cons field function))))
mime-field-decoder-cache)))
ret))
;; ignored fields
(mime-set-field-decoder 'Archive nil nil)
(mime-set-field-decoder 'Content-Md5 nil nil)
(mime-set-field-decoder 'Control nil nil)
(mime-set-field-decoder 'Date nil nil)
(mime-set-field-decoder 'Distribution nil nil)
(mime-set-field-decoder 'Followup-Host nil nil)
(mime-set-field-decoder 'Followup-To nil nil)
(mime-set-field-decoder 'Lines nil nil)
(mime-set-field-decoder 'Message-Id nil nil)
(mime-set-field-decoder 'Newsgroups nil nil)
(mime-set-field-decoder 'Nntp-Posting-Host nil nil)
(mime-set-field-decoder 'Path nil nil)
(mime-set-field-decoder 'Posted-And-Mailed nil nil)
(mime-set-field-decoder 'Received nil nil)
(mime-set-field-decoder 'Status nil nil)
(mime-set-field-decoder 'X-Face nil nil)
(mime-set-field-decoder 'X-Face-Version nil nil)
(mime-set-field-decoder 'X-Info nil nil)
(mime-set-field-decoder 'X-Pgp-Key-Info nil nil)
(mime-set-field-decoder 'X-Pgp-Sig nil nil)
(mime-set-field-decoder 'X-Pgp-Sig-Version nil nil)
(mime-set-field-decoder 'Xref nil nil)
;; structured fields
(let ((fields
'(Reply-To Resent-Reply-To From Resent-From Sender Resent-Sender
To Resent-To Cc Resent-Cc Bcc Resent-Bcc Dcc
Mail-Followup-To
Mime-Version Content-Type Content-Transfer-Encoding
Content-Disposition User-Agent))
field)
(while fields
(setq field (pop fields))
(mime-set-field-decoder
field
'plain #'eword-decode-structured-field-body
'wide #'eword-decode-and-fold-structured-field-body
'summary #'eword-decode-and-unfold-structured-field-body
'nov #'eword-decode-and-unfold-structured-field-body)
))
;; unstructured fields (default)
(mime-set-field-decoder
t
'plain #'eword-decode-unstructured-field-body
'wide #'eword-decode-unstructured-field-body
'summary #'eword-decode-and-unfold-unstructured-field-body
'nov #'eword-decode-unfolded-unstructured-field-body)
;;;###autoload
(defun mime-decode-field-body (field-body field-name
&optional mode max-column)
"Decode FIELD-BODY as FIELD-NAME in MODE, and return the result.
Optional argument MODE must be `plain', `wide', `summary' or `nov'.
Default mode is `summary'.
If MODE is `wide' and MAX-COLUMN is non-nil, the result is folded with
MAX-COLUMN.
Non MIME encoded-word part in FILED-BODY is decoded with
`default-mime-charset'."
(let (field-name-symbol len decoder)
(if (symbolp field-name)
(setq field-name-symbol field-name
len (1+ (string-width (symbol-name field-name))))
(setq field-name-symbol (intern (capitalize field-name))
len (1+ (string-width field-name))))
(setq decoder (mime-find-field-decoder field-name-symbol mode))
(if decoder
(funcall decoder field-body len max-column)
;; Don't decode
(if (eq mode 'summary)
(std11-unfold-string field-body)
field-body)
)))
;;;###autoload
(defun mime-decode-header-in-region (start end
&optional code-conversion)
"Decode MIME encoded-words in region between START and END.
If CODE-CONVERSION is nil, it decodes only encoded-words. If it is
mime-charset, it decodes non-ASCII bit patterns as the mime-charset.
Otherwise it decodes non-ASCII bit patterns as the
default-mime-charset."
(interactive "*r")
(save-excursion
(save-restriction
(narrow-to-region start end)
(let ((default-charset
(if code-conversion
(if (mime-charset-to-coding-system code-conversion)
code-conversion
default-mime-charset))))
(if default-charset
(let ((mode-obj (mime-find-field-presentation-method 'wide))
beg p end field-name len field-decoder)
(goto-char (point-min))
(while (re-search-forward std11-field-head-regexp nil t)
(setq beg (match-beginning 0)
p (match-end 0)
field-name (buffer-substring beg (1- p))
len (string-width field-name)
field-name (intern (capitalize field-name))
field-decoder (inline
(mime-find-field-decoder-internal
field-name mode-obj)))
(when field-decoder
(setq end (std11-field-end))
(let ((body (buffer-substring p end))
(default-mime-charset default-charset))
(delete-region p end)
(insert (funcall field-decoder body (1+ len)))
))
))
(eword-decode-region (point-min) (point-max) t)
)))))
;;;###autoload
(defun mime-decode-header-in-buffer (&optional code-conversion separator)
"Decode MIME encoded-words in header fields.
If CODE-CONVERSION is nil, it decodes only encoded-words. If it is
mime-charset, it decodes non-ASCII bit patterns as the mime-charset.
Otherwise it decodes non-ASCII bit patterns as the
default-mime-charset.
If SEPARATOR is not nil, it is used as header separator."
(interactive "*")
(mime-decode-header-in-region
(point-min)
(save-excursion
(goto-char (point-min))
(if (re-search-forward
(concat "^\\(" (regexp-quote (or separator "")) "\\)?$")
nil t)
(match-beginning 0)
(point-max)
))
code-conversion))
(defalias 'eword-decode-header 'mime-decode-header-in-buffer)
(make-obsolete 'eword-decode-header 'mime-decode-header-in-buffer)
;;; @ encoded-words decoder
;;;
(defvar eword-decode-allow-incomplete-encoded-text t
"*Non-nil means allow incomplete encoded-text in successive encoded-words.
Dividing of encoded-text in the place other than character boundaries
violates RFC2047 section 5, while we have a capability to decode it.
If it is non-nil, the decoder will decode B- or Q-encoding in each
encoded-word, concatenate them, and decode it by charset. Otherwise,
the decoder will fully decode each encoded-word before concatenating
them.")
(defun eword-decode-encoded-words (words must-unfold)
"Decode successive encoded-words in WORDS and return a decoded string.
Each element of WORDS looks like (CHARSET LANGUAGE ENCODING ENCODED-TEXT
ENCODED-WORD).
If MUST-UNFOLD is non-nil, it unfolds and eliminates line-breaks even
if there are in decoded encoded-words (generated by bad manner MUA
such as a version of Net$cape)."
(let (word language charset encoding text rest)
(while words
(setq word (pop words)
language (nth 1 word))
(if (and (or (mime-charset-to-coding-system (setq charset (car word)))
(progn
(message "Unknown charset: %s" charset)
nil))
(cond ((member (setq encoding (nth 2 word)) '("B" "Q"))
t)
((member encoding '("b" "q"))
(setq encoding (upcase encoding)))
(t
(message "Invalid encoding: %s" encoding)
nil))
(condition-case err
(setq text
(encoded-text-decode-string (nth 3 word) encoding))
(error
(message "%s" (error-message-string err))
nil)))
(if (and eword-decode-allow-incomplete-encoded-text
rest
(caaar rest)
(string-equal (downcase charset) (downcase (caaar rest)))
(equal language (cdaar rest)))
;; Concatenate text of which the charset is the same.
(setcdr (car rest) (concat (cdar rest) text))
(push (cons (cons charset language) text) rest))
;; Don't decode encoded-word.
(push (cons (cons nil language) (nth 4 word)) rest)))
(while rest
(setq word (or (and (setq charset (caaar rest))
(condition-case err
(decode-mime-charset-string (cdar rest) charset)
(error
(message "%s" (error-message-string err))
nil)))
(concat (when (cdr rest) " ")
(cdar rest)
(when (and words
(not (eq (string-to-char words) ? )))
" "))))
(when must-unfold
(setq word (mapconcat (lambda (chr)
(cond ((eq chr ?\n) "")
((eq chr ?\r) "")
((eq chr ?\t) " ")
(t (char-to-string chr))))
(std11-unfold-string word)
"")))
(when (setq language (cdaar rest))
(put-text-property 0 (length word) 'mime-language language word))
(setq words (concat word words)
rest (cdr rest)))
words))
;;; @ lexical analyze
;;;
(defvar eword-lexical-analyze-cache nil)
(defvar eword-lexical-analyze-cache-max 299
"*Max position of eword-lexical-analyze-cache.
It is max size of eword-lexical-analyze-cache - 1.")
(defvar mime-header-lexical-analyzer
'(eword-analyze-quoted-string
eword-analyze-domain-literal
eword-analyze-comment
eword-analyze-spaces
eword-analyze-special
eword-analyze-encoded-word
eword-analyze-atom)
"*List of functions to return result of lexical analyze.
Each function must have three arguments: STRING, START and MUST-UNFOLD.
STRING is the target string to be analyzed.
START is start position of STRING to analyze.
If MUST-UNFOLD is not nil, each function must unfold and eliminate
bare-CR and bare-LF from the result even if they are included in
content of the encoded-word.
Each function must return nil if it can not analyze STRING as its
format.
Previous function is preferred to next function. If a function
returns nil, next function is used. Otherwise the return value will
be the result.")
(defun eword-analyze-quoted-string (string start &optional must-unfold)
(let ((p (std11-check-enclosure string ?\" ?\" nil start))
ret)
(when p
(setq ret (decode-mime-charset-string
(std11-strip-quoted-pair
(substring string (1+ start) (1- p)))
default-mime-charset))
(if mime-header-accept-quoted-encoded-words
(setq ret (eword-decode-string ret)))
(cons (cons 'quoted-string ret)
p))))
(defun eword-analyze-domain-literal (string start &optional must-unfold)
(std11-analyze-domain-literal string start))
(defun eword-analyze-comment (string from &optional must-unfold)
(let ((len (length string))
(i (or from 0))
dest last-str
chr ret)
(when (and (> len i)
(eq (aref string i) ?\())
(setq i (1+ i)
from i)
(catch 'tag
(while (< i len)
(setq chr (aref string i))
(cond ((eq chr ?\\)
(setq i (1+ i))
(if (>= i len)
(throw 'tag nil)
)
(setq last-str (concat last-str
(substring string from (1- i))
(char-to-string (aref string i)))
i (1+ i)
from i)
)
((eq chr ?\))
(setq ret (concat last-str
(substring string from i)))
(throw 'tag (cons
(cons 'comment
(nreverse
(if (string= ret "")
dest
(cons
(eword-decode-string
(decode-mime-charset-string
ret default-mime-charset)
must-unfold)
dest)
)))
(1+ i)))
)
((eq chr ?\()
(if (setq ret (eword-analyze-comment string i must-unfold))
(setq last-str
(concat last-str
(substring string from i))
dest
(if (string= last-str "")
(cons (car ret) dest)
(list* (car ret)
(eword-decode-string
(decode-mime-charset-string
last-str default-mime-charset)
must-unfold)
dest)
)
i (cdr ret)
from i
last-str "")
(throw 'tag nil)
))
(t
(setq i (1+ i))
))
)))))
(defun eword-analyze-spaces (string start &optional must-unfold)
(std11-analyze-spaces string start))
(defun eword-analyze-special (string start &optional must-unfold)
(std11-analyze-special string start))
(defun eword-analyze-encoded-word (string start &optional must-unfold)
(let* ((regexp (concat "[\n\t ]*\\(" eword-encoded-word-regexp "\\)"))
(match (and (string-match regexp string start)
(= start (match-beginning 0))))
next words)
(while match
(setq next (match-end 0))
(push (list (match-string 2 string) ;; charset
(when (match-beginning 3) ;; language
(intern
(downcase
(substring string
(1+ (match-beginning 3)) (match-end 3)))))
(match-string 4 string) ;; encoding
(match-string 5 string) ;; encoded-text
(match-string 1 string)) ;; encoded-word
words)
(setq match (and (string-match regexp string next)
(= next (match-beginning 0)))))
(when words
(cons (cons 'atom (eword-decode-encoded-words (nreverse words)
must-unfold))
next))))
(defun eword-analyze-atom (string start &optional must-unfold)
(if (and (string-match std11-atom-regexp string start)
(= (match-beginning 0) start))
(let ((end (match-end 0)))
(cons (cons 'atom (decode-mime-charset-string
(substring string start end)
default-mime-charset))
;;(substring string end)
end)
)))
(defun eword-lexical-analyze-internal (string start must-unfold)
(let ((len (length string))
dest ret)
(while (< start len)
(setq ret
(let ((rest mime-header-lexical-analyzer)
func r)
(while (and (setq func (car rest))
(null
(setq r (funcall func string start must-unfold)))
)
(setq rest (cdr rest)))
(or r
(cons (cons 'error (substring string start)) (1+ len)))
))
(setq dest (cons (car ret) dest)
start (cdr ret))
)
(nreverse dest)
))
(defun eword-lexical-analyze (string &optional start must-unfold)
"Return lexical analyzed list corresponding STRING.
It is like std11-lexical-analyze, but it decodes non us-ascii
characters encoded as encoded-words or invalid \"raw\" format.
\"Raw\" non us-ascii characters are regarded as variable
`default-mime-charset'."
(let ((key (substring string (or start 0)))
ret cell)
(set-text-properties 0 (length key) nil key)
(if (setq ret (assoc key eword-lexical-analyze-cache))
(cdr ret)
(setq ret (eword-lexical-analyze-internal key 0 must-unfold))
(setq eword-lexical-analyze-cache
(cons (cons key ret)
eword-lexical-analyze-cache))
(if (cdr (setq cell (nthcdr eword-lexical-analyze-cache-max
eword-lexical-analyze-cache)))
(setcdr cell nil))
ret)))
(defun eword-decode-token (token)
(let ((type (car token))
(value (cdr token)))
(cond ((eq type 'quoted-string)
(std11-wrap-as-quoted-string value))
((eq type 'comment)
(let ((dest ""))
(while value
(setq dest (concat dest
(if (stringp (car value))
(std11-wrap-as-quoted-pairs
(car value) '(?( ?)))
(eword-decode-token (car value))
))
value (cdr value))
)
(concat "(" dest ")")
))
(t value))))
(defun eword-extract-address-components (string &optional start)
"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.
It decodes non us-ascii characters in FULL-NAME encoded as
encoded-words or invalid \"raw\" string. \"Raw\" non us-ascii
characters are regarded as variable `default-mime-charset'."
(let* ((structure (car (std11-parse-address
(eword-lexical-analyze
(std11-unfold-string string) start
'must-unfold))))
(phrase (std11-full-name-string structure))
(address (std11-address-string structure))
)
(list phrase address)
))
;;; @ end
;;;
(provide 'eword-decode)
;;; eword-decode.el ends here
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