;;; Code:
-(require 'std11-parse)
+(require 'std11)
(require 'mel)
(require 'mime-def)
:group 'mime)
+;;; @ variables
+;;;
+
+(defcustom eword-decode-sticked-encoded-word nil
+ "*If non-nil, decode encoded-words sticked on atoms,
+other encoded-words, etc.
+however this behaviour violates RFC2047."
+ :group 'eword-decode
+ :type 'boolean)
+
+(defcustom eword-decode-quoted-encoded-word nil
+ "*If non-nil, decode encoded-words in quoted-string
+however this behaviour violates RFC2047."
+ :group 'eword-decode
+ :type 'boolean)
+
+
;;; @ MIME encoded-word definition
;;;
-(defconst eword-encoded-text-regexp "[!->@-~]+")
-(defconst eword-encoded-word-regexp
+(defconst eword-encoded-word-prefix-regexp
(concat (regexp-quote "=?")
- "\\("
- mime-charset-regexp
- "\\)"
+ "\\(" mime-charset-regexp "\\)"
(regexp-quote "?")
"\\(B\\|Q\\)"
- (regexp-quote "?")
- "\\("
- eword-encoded-text-regexp
- "\\)"
- (regexp-quote "?=")))
-(defconst eword-after-encoded-word-regexp "\\([ \t]\\|$\\)")
+ (regexp-quote "?")))
+(defconst eword-encoded-word-suffix-regexp
+ (regexp-quote "?="))
+
+(defconst eword-encoded-text-in-unstructured-regexp "[!->@-~]+")
+(defconst eword-encoded-word-in-unstructured-regexp
+ (concat eword-encoded-word-prefix-regexp
+ "\\(" eword-encoded-text-in-unstructured-regexp "\\)"
+ eword-encoded-word-suffix-regexp))
+(defconst eword-after-encoded-word-in-unstructured-regexp "\\([ \t]\\|$\\)")
(defconst eword-encoded-text-in-phrase-regexp "[-A-Za-z0-9!*+/=_]+")
(defconst eword-encoded-word-in-phrase-regexp
- (concat (regexp-quote "=?")
- "\\("
- mime-charset-regexp
- "\\)"
- (regexp-quote "?")
- "\\(B\\|Q\\)"
- (regexp-quote "?")
- "\\("
- eword-encoded-text-in-phrase-regexp
- "\\)"
- (regexp-quote "?=")))
-(defconst eword-after-encoded-word-in-phrase-regexp "\\([ \t(]\\|$\\)")
+ (concat eword-encoded-word-prefix-regexp
+ "\\(" eword-encoded-text-in-phrase-regexp "\\)"
+ eword-encoded-word-suffix-regexp))
+(defconst eword-after-encoded-word-in-phrase-regexp "\\([ \t]\\|$\\)")
(defconst eword-encoded-text-in-comment-regexp "[]!-'*->@-[^-~]+")
(defconst eword-encoded-word-in-comment-regexp
- (concat (regexp-quote "=?")
- "\\("
- mime-charset-regexp
- "\\)"
- (regexp-quote "?")
- "\\(B\\|Q\\)"
- (regexp-quote "?")
- "\\("
- eword-encoded-text-in-comment-regexp
- "\\)"
- (regexp-quote "?=")))
+ (concat eword-encoded-word-prefix-regexp
+ "\\(" eword-encoded-text-in-comment-regexp "\\)"
+ eword-encoded-word-suffix-regexp))
(defconst eword-after-encoded-word-in-comment-regexp "\\([ \t()\\\\]\\|$\\)")
(defconst eword-encoded-text-in-quoted-string-regexp "[]!#->@-[^-~]+")
(defconst eword-encoded-word-in-quoted-string-regexp
- (concat (regexp-quote "=?")
- "\\("
- mime-charset-regexp
- "\\)"
- (regexp-quote "?")
- "\\(B\\|Q\\)"
- (regexp-quote "?")
- "\\("
- eword-encoded-text-in-quoted-string-regexp
- "\\)"
- (regexp-quote "?=")))
+ (concat eword-encoded-word-prefix-regexp
+ "\\(" eword-encoded-text-in-quoted-string-regexp "\\)"
+ eword-encoded-word-suffix-regexp))
(defconst eword-after-encoded-word-in-quoted-string-regexp "\\([ \t\"\\\\]\\|$\\)")
+; obsolete
+(defconst eword-encoded-text-regexp eword-encoded-text-in-unstructured-regexp)
+(defconst eword-encoded-word-regexp eword-encoded-word-in-unstructured-regexp)
+
;;; @@ Base64
;;;
;;; @@ Quoted-Printable
;;;
-(defconst quoted-printable-hex-chars "0123456789ABCDEF")
-(defconst quoted-printable-octet-regexp
- (concat "=[" quoted-printable-hex-chars
- "][" quoted-printable-hex-chars "]"))
-
(defconst eword-Q-encoded-text-regexp
(concat "\\([^=?]\\|" quoted-printable-octet-regexp "\\)+"))
;; (defconst eword-Q-encoding-and-encoded-text-regexp
;; (concat "\\(Q\\)\\?" eword-Q-encoded-text-regexp))
-;;; @ for string
+;;; @ internal utilities
;;;
-(defcustom eword-decode-sticked-encoded-word nil
- "*If non-nil, decode encoded-words sticked on atoms,
-other encoded-words, etc.
-however this behaviour violates RFC2047."
- :group 'eword-decode
- :type 'boolean)
-
-(defcustom eword-decode-quoted-encoded-word nil
- "*If non-nil, decode encoded-words in quoted-string
-however this behaviour violates RFC2047."
- :group 'eword-decode
- :type 'boolean)
-
(defun eword-decode-first-encoded-words (string
eword-regexp
after-regexp
"Decode MIME encoded-words in beginning of STRING.
EWORD-REGEXP is the regexp that matches a encoded-word.
-Usual value is eword-encoded-word-regexp,
+Usual value is
+eword-encoded-word-in-unstructured-regexp,
eword-encoded-text-in-phrase-regexp,
eword-encoded-word-in-comment-regexp or
eword-encoded-word-in-quoted-string-regexp.
AFTER-REGEXP is the regexp that matches a after encoded-word.
-Usual value is eword-after-encoded-word-regexp,
+Usual value is
+eword-after-encoded-word-in-unstructured-regexp,
eword-after-encoded-text-in-phrase-regexp,
eword-after-encoded-word-in-comment-regexp or
eword-after-encoded-word-in-quoted-string-regexp.
-If beginning of STRING matches EWORD-REGEXP and AFTER-REGEXP,
+If beginning of STRING matches EWORD-REGEXP with AFTER-REGEXP,
returns a cons cell of decoded string(sequence of characters) and
the rest(sequence of octets).
if there are in decoded encoded-words (generated by bad manner MUA
such as a version of Net$cape)."
(if eword-decode-sticked-encoded-word (setq after-regexp ""))
- (let ((between-ewords-regexp
- (if eword-decode-sticked-encoded-word
- "\\(\n?[ \t]\\)*"
- "\\(\n?[ \t]\\)+"))
- (src string) ; sequence of octets.
- (dst "")) ; sequence of characters.
- (if (string-match
- (concat "\\`\\(" eword-regexp "\\)" after-regexp) src)
+ (let* ((between-ewords-regexp
+ (if eword-decode-sticked-encoded-word
+ "\\(\n?[ \t]\\)*"
+ "\\(\n?[ \t]\\)+"))
+ (between-ewords-eword-after-regexp
+ (concat "\\`\\(" between-ewords-regexp "\\)"
+ "\\(" eword-regexp "\\)"
+ after-regexp))
+ (eword-after-regexp
+ (concat "\\`\\(" eword-regexp "\\)" after-regexp))
+ (src string) ; sequence of octets.
+ (dst "")) ; sequence of characters.
+ (if (string-match eword-after-regexp src)
(let* (p
(q (match-end 1))
(ew (substring src 0 q))
(progn
(while
(and
- (string-match
- (concat "\\`\\(" between-ewords-regexp "\\)"
- "\\(" eword-regexp "\\)"
- after-regexp)
- src)
+ (string-match between-ewords-eword-after-regexp src)
(progn
(setq p (match-end 1)
q (match-end 3)
(cons dst src))
nil)))
-(defun eword-decode-comment-string (string &optional must-unfold)
- (let ((src string)
- (buf "")
+(defun eword-decode-entire-string (string
+ eword-regexp
+ after-regexp
+ safe-regexp
+ escape ; ?\\ or nil.
+ delimiters ; list of chars.
+ must-unfold
+ code-conversion)
+ (if (and code-conversion
+ (not (mime-charset-to-coding-system code-conversion)))
+ (setq code-conversion default-mime-charset))
+ (let ((equal-safe-regexp (concat "\\`=?" safe-regexp))
(dst "")
- (flag-ew t))
+ (buf "")
+ (src string)
+ (ew-enable t))
(while (< 0 (length src))
(let ((ch (aref src 0))
(decoded (and
- flag-ew
+ ew-enable
(eword-decode-first-encoded-words src
- eword-encoded-word-in-comment-regexp
- eword-after-encoded-word-in-comment-regexp
- must-unfold))))
+ eword-regexp after-regexp must-unfold))))
(if (and (not (string= buf ""))
- (or decoded (eq ch ?\() (eq ch ?\))))
+ (or decoded (memq ch delimiters)))
(setq dst (concat dst
(std11-wrap-as-quoted-pairs
- (decode-mime-charset-string buf
- default-mime-charset)
- '(?\( ?\))))
+ (decode-mime-charset-string buf code-conversion)
+ delimiters))
buf ""))
(cond
(decoded
(setq dst (concat dst
(std11-wrap-as-quoted-pairs
(car decoded)
- '(?( ?))))
+ delimiters))
src (cdr decoded)))
- ((or (eq ch ?\() (eq ch ?\)))
+ ((memq ch delimiters)
(setq dst (concat dst (list ch))
src (substring src 1)
- flag-ew t))
- ((eq ch ?\\)
+ ew-enable t))
+ ((eq ch escape)
(setq buf (concat buf (list (aref src 1)))
src (substring src 2)
- flag-ew t))
- ((or (eq ch ?\ ) (eq ch ?\t) (eq ch ?\n))
- (setq buf (concat buf (list ch))
- src (substring src 1)
- flag-ew t))
- ((string-match "\\`=?[^ \t\n()\\\\=]*" src)
+ ew-enable t))
+ ((string-match "\\`[ \t\n]+" src)
(setq buf (concat buf (substring src 0 (match-end 0)))
src (substring src (match-end 0))
- flag-ew eword-decode-sticked-encoded-word))
- (t (error "something wrong")))))
- (if (not (string= buf ""))
- (setq dst (concat dst
- (std11-wrap-as-quoted-pairs
- (decode-mime-charset-string buf
- default-mime-charset)
- '(?\( ?\))))))
- dst))
-
-(defun eword-decode-quoted-string (string &optional must-unfold)
- (let ((src string)
- (buf "")
- (dst "")
- (flag-ew t))
- (while (< 0 (length src))
- (let ((ch (aref src 0))
- (decoded (and
- eword-decode-quoted-encoded-word
- flag-ew
- (eword-decode-first-encoded-words src
- eword-encoded-word-in-quoted-string-regexp
- eword-after-encoded-word-in-quoted-string-regexp
- must-unfold))))
- (if (and (not (string= buf ""))
- (or decoded (eq ch ?\")))
- (setq dst (concat dst
- (std11-wrap-as-quoted-pairs
- (decode-mime-charset-string buf
- default-mime-charset)
- '(?\")))
- buf ""))
- (cond
- (decoded
- (setq dst (concat dst
- (std11-wrap-as-quoted-pairs
- (car decoded)
- '(?\")))
- src (cdr decoded)))
- ((or (eq ch ?\"))
- (setq dst (concat dst (list ch))
- src (substring src 1)
- flag-ew t))
- ((eq ch ?\\)
- (setq buf (concat buf (list (aref src 1)))
- src (substring src 2)
- flag-ew t))
- ((or (eq ch ?\ ) (eq ch ?\t) (eq ch ?\n))
- (setq buf (concat buf (list ch))
- src (substring src 1)
- flag-ew t))
- ((string-match "\\`=?[^ \t\n\"\\\\=]*" src)
+ ew-enable t))
+ ((and (string-match equal-safe-regexp src)
+ (< 0 (match-end 0)))
(setq buf (concat buf (substring src 0 (match-end 0)))
src (substring src (match-end 0))
- flag-ew eword-decode-sticked-encoded-word))
+ ew-enable eword-decode-sticked-encoded-word))
(t (error "something wrong")))))
(if (not (string= buf ""))
(setq dst (concat dst
(std11-wrap-as-quoted-pairs
- (decode-mime-charset-string buf
- default-mime-charset)
- '(?\")))))
+ (decode-mime-charset-string buf code-conversion)
+ delimiters))))
dst))
-(defun eword-decode-unstructured-string (string &optional must-unfold)
- (let ((src string)
- (buf "")
- (dst "")
- (flag-ew t))
- (while (< 0 (length src))
- (let ((ch (aref src 0))
- (decoded (and flag-ew (eword-decode-first-encoded-words src
- eword-encoded-word-regexp
- eword-after-encoded-word-regexp
- must-unfold))))
- (if (and (not (string= buf ""))
- decoded)
- (setq dst (concat dst
- (decode-mime-charset-string buf
- default-mime-charset))
- buf ""))
- (cond
- (decoded
- (setq dst (concat dst (car decoded))
- src (cdr decoded)))
- ((or (eq ch ?\ ) (eq ch ?\t) (eq ch ?\n))
- (setq buf (concat buf (list ch))
- src (substring src 1)
- flag-ew t))
- ((string-match "\\`=?[^ \t\n=]*" src)
- (setq buf (concat buf (substring src 0 (match-end 0)))
- src (substring src (match-end 0))
- flag-ew eword-decode-sticked-encoded-word))
- (t (error "something wrong")))))
- (if (not (string= buf ""))
- (setq dst (concat dst
- (decode-mime-charset-string buf
- default-mime-charset))))
- dst))
-(defun eword-decode-string (string &optional must-unfold)
+;;; @ for string
+;;;
+
+(defun eword-decode-unstructured (string code-conversion &optional must-unfold)
+ (eword-decode-entire-string
+ string
+ eword-encoded-word-in-unstructured-regexp
+ eword-after-encoded-word-in-unstructured-regexp
+ "[^ \t\n=]*"
+ nil
+ nil
+ must-unfold
+ code-conversion))
+
+(defun eword-decode-comment (string code-conversion &optional must-unfold)
+ (eword-decode-entire-string
+ string
+ eword-encoded-word-in-comment-regexp
+ eword-after-encoded-word-in-comment-regexp
+ "[^ \t\n()\\\\=]*"
+ ?\\
+ '(?\( ?\))
+ must-unfold
+ code-conversion))
+
+(defun eword-decode-quoted-string (string code-conversion &optional must-unfold)
+ (eword-decode-entire-string
+ string
+ eword-encoded-word-in-quoted-string-regexp
+ eword-after-encoded-word-in-quoted-string-regexp
+ "[^ \t\n\"\\\\=]*"
+ ?\\
+ '(?\")
+ must-unfold
+ code-conversion))
+
+(defun eword-decode-string (string &optional must-unfold code-conversion)
"Decode MIME encoded-words in STRING.
STRING is unfolded 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$cape)."
- (eword-decode-unstructured-string
+such as a version of Net$cape).
+
+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."
+ (eword-decode-unstructured
(std11-unfold-string string)
+ code-conversion
must-unfold))
;;; @ for region
;;;
-(defun eword-decode-region (start end &optional unfolding must-unfold)
+(defun eword-decode-region (start end &optional unfolding must-unfold
+ code-conversion)
"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$cape)."
+such as a version of Net$cape).
+
+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
(if unfolding
(eword-decode-unfold)
)
- (let ((str (eword-decode-unstructured-string
- (buffer-substring (point-min) (point-max))
+ (let ((str (eword-decode-unstructured
+ (buffer-substring (point-min) (point-max))
+ code-conversion
must-unfold)))
(delete-region (point-min) (point-max))
(insert str)))))
;;;
(defcustom eword-decode-ignored-field-list
- '(newsgroups path lines nntp-posting-host message-id date)
+ '(Newsgroups Path Lines Nntp-Posting-Host Received Message-Id Date)
"*List of field-names to be ignored when decoding.
Each field name must be symbol."
:group 'eword-decode
:type '(repeat symbol))
(defcustom eword-decode-structured-field-list
- '(reply-to resent-reply-to from resent-from sender resent-sender
- to resent-to cc resent-cc bcc resent-bcc dcc
- mime-version content-type content-transfer-encoding
- content-disposition)
+ '(Reply-To Resent-Reply-To From Resent-From Sender Resent-Sender
+ To Resent-To Cc Resent-Cc Bcc Resent-Bcc Dcc
+ Mime-Version Content-Type Content-Transfer-Encoding
+ Content-Disposition)
"*List of field-names to decode as structured field.
Each field name must be symbol."
:group 'eword-decode
default-mime-charset.
If SEPARATOR is not nil, it is used as header separator."
(interactive "*")
+ (if (and code-conversion
+ (not (mime-charset-to-coding-system code-conversion)))
+ (setq code-conversion default-mime-charset))
(save-excursion
(save-restriction
(std11-narrow-to-header separator)
- (let ((default-charset
- (if code-conversion
- (if (mime-charset-to-coding-system code-conversion)
- code-conversion
- default-mime-charset))))
- (if default-charset
- (let (beg p end field-name len)
- (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 (downcase field-name))
- end (std11-field-end))
- (cond ((memq field-name eword-decode-ignored-field-list)
- ;; Don't decode
- )
- ((memq field-name eword-decode-structured-field-list)
- ;; Decode as structured field
- (let ((body (buffer-substring p end))
- (default-mime-charset default-charset))
- (delete-region p end)
- (insert (eword-decode-and-fold-structured-field
- body (1+ len)))
- ))
- (t
- ;; Decode as unstructured field
- (save-restriction
- (narrow-to-region beg (1+ end))
- (goto-char p)
- (let ((default-mime-charset default-charset))
- (eword-decode-region beg (point-max) 'unfold))
- (goto-char (point-max))
- )))))
- (eword-decode-region (point-min) (point-max) t)
- )))))
+ (if code-conversion
+ (let (beg p end field-name len)
+ (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))
+ end (std11-field-end))
+ (cond ((memq field-name eword-decode-ignored-field-list)
+ ;; Don't decode
+ )
+ ((memq field-name eword-decode-structured-field-list)
+ ;; Decode as structured field
+ (let ((body (buffer-substring p end)))
+ (delete-region p end)
+ (insert (eword-decode-and-fold-structured-field
+ body (1+ len)))
+ ))
+ (t
+ ;; Decode as unstructured field
+ (save-restriction
+ (narrow-to-region beg (1+ end))
+ (goto-char p)
+ (eword-decode-region beg (point-max) 'unfold nil
+ code-conversion)
+ (goto-char (point-max))
+ )))))
+ (eword-decode-region (point-min) (point-max) t nil nil)
+ ))))
(defun eword-decode-unfold ()
(goto-char (point-min))
;;; @ encoded-word decoder
;;;
-(defvar eword-warning-face nil "Face used for invalid encoded-word.")
+(defvar eword-decode-encoded-word-error-handler
+ 'eword-decode-encoded-word-default-error-handler)
+
+(defvar eword-warning-face nil
+ "Face used for invalid encoded-word.")
+
+(defun eword-decode-encoded-word-default-error-handler (word signal)
+ (and (add-text-properties 0 (length word)
+ (and eword-warning-face
+ (list 'face eword-warning-face))
+ word)
+ word))
(defun eword-decode-encoded-word (word &optional must-unfold)
"Decode WORD if it is an encoded-word.
(condition-case err
(eword-decode-encoded-text charset encoding text must-unfold)
(error
- (and
- (add-text-properties 0 (length word)
- (and eword-warning-face
- (list 'face eword-warning-face))
- word)
- word)))
+ (funcall eword-decode-encoded-word-error-handler word err)
+ ))
))
word))
(error "Invalid encoding %s" encoding)
)))
)
- (if dest
- (progn
- (setq dest (decode-coding-string dest cs))
- (if must-unfold
- (mapconcat (function
- (lambda (chr)
- (cond
- ((eq chr ?\n) "")
- ((eq chr ?\t) " ")
- (t (char-to-string chr)))
- ))
- (std11-unfold-string dest)
- "")
- dest)
- ))))))
+ (when dest
+ (setq dest (decode-mime-charset-string dest charset))
+ (if must-unfold
+ (mapconcat (function
+ (lambda (chr)
+ (cond ((eq chr ?\n) "")
+ ((eq chr ?\t) " ")
+ (t (char-to-string chr)))
+ ))
+ (std11-unfold-string dest)
+ "")
+ dest))))))
;;; @ lexical analyze
(let ((p (std11-check-enclosure string ?\" ?\")))
(if p
(cons (cons 'quoted-string
- (eword-decode-quoted-string (substring string 0 p)))
- (substring string p))
- )))
+ (if eword-decode-quoted-encoded-word
+ (eword-decode-quoted-string
+ (substring string 0 p)
+ default-mime-charset)
+ (decode-mime-charset-string
+ (std11-strip-quoted-pair (substring string 0 p))
+ default-mime-charset)))
+ (substring string p)))
+ ))
(defun eword-analyze-domain-literal (string &optional must-unfold)
(std11-analyze-domain-literal string))
(setq p (std11-check-enclosure string ?\( ?\) t p)))
(setq p (or p len))
(cons (cons 'comment
- (eword-decode-comment-string (substring string 0 p)))
+ (eword-decode-comment
+ (std11-unfold-string (substring string 0 p))
+ default-mime-charset))
(substring string p)))
nil)))
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)."
- (eword-decode-string string must-unfold))
+ (eword-decode-string string must-unfold default-mime-charset))
(defun eword-extract-address-components (string)
"Extract full name and canonical address from STRING.
projects / elisp / flim.git / blobdiff