-;;; mel-q.el: Quoted-Printable and Q-encoding encoder/decoder for GNU Emacs
+;;; mel-q.el --- Quoted-Printable encoder/decoder.
-;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995,96,97,98,99,2000,2001 Free Software Foundation, Inc.
-;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Author: MORIOKA Tomohiko <tomo@m17n.org>
;; Created: 1995/6/25
-;; Version: $Id: mel-q.el,v 6.14 1997/07/13 04:17:34 morioka Exp $
;; Keywords: MIME, Quoted-Printable, Q-encoding
-;; This file is part of MEL (MIME Encoding Library).
+;; 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
;; 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.
+;; along with this program; 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 'emu)
+(require 'mime-def)
+(require 'path-util)
+(eval-when-compile
+ ;; XXX: should provide char-list instead of string-to-char-list.
+ ;; XXx: and also the macro `as-binary-process' should be provided
+ ;; XXx: by the module "pces" which will be loaded by way of "poem".
+ (require 'poem))
;;; @ Quoted-Printable encoder
;;;
-(defconst quoted-printable-hex-chars "0123456789ABCDEF")
-
(defsubst quoted-printable-quote-char (character)
(concat
"="
- (char-to-string (aref quoted-printable-hex-chars (ash character -4)))
- (char-to-string (aref quoted-printable-hex-chars (logand character 15)))
- ))
+ (char-to-string (aref quoted-printable-hex-chars
+ (ash (logand character 255) -4)))
+ (char-to-string (aref quoted-printable-hex-chars (logand character 15)))))
(defun quoted-printable-internal-encode-region (start end)
(save-excursion
(save-restriction
- (narrow-to-region start end)
- (goto-char start)
+ (narrow-to-region (goto-char start) end)
(let ((col 0)
- enable-multibyte-characters)
- (while (< (point)(point-max))
- (cond ((>= col 75)
- (insert "=\n")
- (setq col 0)
- )
- ((looking-at "^From ")
- (replace-match "=46rom ")
- (backward-char 1)
- (setq col (+ col 6))
- )
- ((looking-at "[ \t]\n")
- (forward-char 1)
- (insert "=\n")
- (forward-char 1)
- (setq col 0)
- )
- (t
- (let ((chr (char-after (point))))
- (cond ((= chr ?\n)
- (forward-char 1)
- (setq col 0)
- )
- ((or (= chr ?\t)
- (and (<= 32 chr)(/= chr ?=)(< chr 127))
- )
- (forward-char 1)
- (setq col (1+ col))
- )
- ((>= col 73)
- (insert "=\n")
- (setq col 0)
- )
- (t
- (delete-char 1)
- (insert (quoted-printable-quote-char chr))
- (setq col (+ col 3))
- ))
- )))
- )))))
+ chr)
+ (while (not (eobp))
+ (cond
+ ((>= col 75) ; soft line break.
+ (insert "=\n")
+ (setq col 0))
+ ((eolp) ; end of line.
+ (forward-char)
+ (setq col 0))
+ (t
+ (setq chr (logand (char-after (point)) 255))
+ (cond
+ ((and (memq chr '(? ?\t)) ; encode WSP char before CRLF.
+ (eq (char-after (1+ (point))) ?\n))
+ (forward-char)
+ (insert "=\n")
+ (forward-char)
+ (setq col 0))
+ ((and (bolp) ; "^From " is not safe.
+ (eq chr ?F)
+ (eq (char-after (1+ (point))) ?r)
+ (eq (char-after (+ 2 (point))) ?o)
+ (eq (char-after (+ 3 (point))) ?m)
+ (eq (char-after (+ 4 (point))) ? ))
+ (delete-region (point)(1+ (point)))
+ (insert "=46") ; moved to ?r.
+ (forward-char 4) ; skip "rom ".
+ (setq col 7))
+ ((or (= chr ?\t) ; skip safe char.
+ (and (<= 32 chr)(/= chr ?=)(< chr 127)))
+ (forward-char)
+ (setq col (1+ col)))
+ ((>= col 73) ; soft line break.
+ (insert "=\n")
+ (setq col 0))
+ (t ; encode unsafe char.
+ (delete-region (point)(1+ (point)))
+ ;; (insert (quoted-printable-quote-char chr))
+ (insert
+ ?=
+ (aref quoted-printable-hex-chars (ash chr -4))
+ (aref quoted-printable-hex-chars (logand chr 15)))
+ (setq col (+ col 3)))))))))))
+
(defvar quoted-printable-external-encoder '("mmencode" "-q")
"*list of quoted-printable encoder program name and its arguments.")
(as-binary-process
(apply (function call-process-region)
start end (car quoted-printable-external-encoder)
- t t nil (cdr quoted-printable-external-encoder))
- )
+ t t nil
+ (cdr quoted-printable-external-encoder)))
;; for OS/2
;; regularize line break code
(goto-char (point-min))
(while (re-search-forward "\r$" nil t)
- (replace-match "")
- )
- )))
+ (replace-match "")))))
+
(defvar quoted-printable-internal-encoding-limit
(if (and (featurep 'xemacs)(featurep 'mule))
0
- (require 'file-detect)
+ (require 'path-util)
(if (exec-installed-p "mmencode")
1000
- (message "Don't found external encoder for Quoted-Printable!")
+ ;; XXX: Fix this message, or simply remove it.
+ ;; (message "Don't found external encoder for Quoted-Printable!")
nil))
"*limit size to use internal quoted-printable encoder.
If size of input to encode is larger than this limit,
otherwise it calls external quoted-printable encoder specified by
`quoted-printable-external-encoder'. In this case, you must install
the program (maybe mmencode included in metamail or XEmacs package)."
- (interactive "r")
+ (interactive "*r")
(if (and quoted-printable-internal-encoding-limit
(> (- end start) quoted-printable-internal-encoding-limit))
(quoted-printable-external-encode-region start end)
- (quoted-printable-internal-encode-region start end)
- ))
+ (quoted-printable-internal-encode-region start end)))
(defun quoted-printable-encode-string (string)
"Encode STRING to quoted-printable, and return the result."
(with-temp-buffer
(insert string)
(quoted-printable-encode-region (point-min)(point-max))
- (buffer-string)
- ))
+ (buffer-string)))
+
+
+(mel-define-method-function
+ (mime-encode-string string (nil "quoted-printable"))
+ 'quoted-printable-encode-string)
+
+(mel-define-method-function
+ (mime-encode-region start end (nil "quoted-printable"))
+ 'quoted-printable-encode-region)
-(defun quoted-printable-insert-encoded-file (filename)
+(mel-define-method mime-insert-encoded-file (filename (nil "quoted-printable"))
"Encode contents of file FILENAME to quoted-printable, and insert the result.
It calls external quoted-printable encoder specified by
`quoted-printable-external-encoder'. So you must install the program
\(maybe mmencode included in metamail or XEmacs package)."
- (interactive (list (read-file-name "Insert encoded file: ")))
- (apply (function call-process) (car quoted-printable-external-encoder)
- filename t nil (cdr quoted-printable-external-encoder))
- )
+ (interactive "*fInsert encoded file: ")
+ (apply (function call-process)
+ (car quoted-printable-external-encoder)
+ filename t nil
+ (cdr quoted-printable-external-encoder)))
;;; @ Quoted-Printable decoder
;;;
-(defun quoted-printable-decode-string (string)
- "Decode STRING which is encoded in quoted-printable, and return the result."
- (let (q h l)
- (mapconcat (function
- (lambda (chr)
- (cond ((eq chr ?=)
- (setq q t)
- "")
- (q (setq h
- (cond ((<= ?a chr) (+ (- chr ?a) 10))
- ((<= ?A chr) (+ (- chr ?A) 10))
- ((<= ?0 chr) (- chr ?0))
- ))
- (setq q nil)
- "")
- (h (setq l (cond ((<= ?a chr) (+ (- chr ?a) 10))
- ((<= ?A chr) (+ (- chr ?A) 10))
- ((<= ?0 chr) (- chr ?0))
- ))
- (prog1
- (char-to-string (logior (ash h 4) l))
- (setq h nil)
- )
- )
- (t (char-to-string chr))
- )))
- string "")))
-
-(defconst quoted-printable-octet-regexp
- (concat "=[" quoted-printable-hex-chars
- "][" quoted-printable-hex-chars "]"))
+(defsubst quoted-printable-hex-char-to-num (chr)
+ (cond ((<= ?a chr) (+ (- chr ?a) 10))
+ ((<= ?A chr) (+ (- chr ?A) 10))
+ ((<= ?0 chr) (- chr ?0))
+ ))
+
+(if (eval-when-compile
+ (> (string-to-char (string-as-multibyte "\200")) 128))
+ (defsubst quoted-printable-num-to-raw-byte-char (chr)
+ (if (and chr
+ (> chr 127))
+ (logior chr
+ (eval-when-compile
+ (- (string-to-char (string-as-multibyte "\200")) 128)))
+ chr))
+ (defsubst quoted-printable-num-to-raw-byte-char (chr)
+ chr))
(defun quoted-printable-internal-decode-region (start end)
(save-excursion
(save-restriction
(narrow-to-region start end)
(goto-char (point-min))
- (while (re-search-forward "=\n" nil t)
- (replace-match "")
- )
- (goto-char (point-min))
- (let (b e str)
- (while (re-search-forward quoted-printable-octet-regexp nil t)
- (setq b (match-beginning 0))
- (setq e (match-end 0))
- (setq str (buffer-substring b e))
- (delete-region b e)
- (insert (quoted-printable-decode-string str))
- ))
- )))
+ (while (search-forward "=" nil t)
+ (cond
+ ((eolp)
+ ;; unfold soft line break.
+ (delete-region (1- (point))(1+ (point))))
+ ((and (memq (char-after (point))
+ (eval-when-compile
+ ;; XXX: should provide char-list instead.
+ (string-to-char-list quoted-printable-hex-chars)))
+ (memq (char-after (1+ (point)))
+ (eval-when-compile
+ ;; XXX: should provide char-list instead.
+ (string-to-char-list quoted-printable-hex-chars))))
+ ;; encoded char.
+ (insert
+ (prog1
+ (quoted-printable-num-to-raw-byte-char
+ (logior
+ (ash (quoted-printable-hex-char-to-num (char-after (point))) 4)
+ (quoted-printable-hex-char-to-num (char-after (1+ (point))))))
+ (delete-region (1- (point))(+ 2 (point))))))
+ (t
+ ;; invalid encoding.
+ ))))))
(defvar quoted-printable-external-decoder '("mmencode" "-q" "-u")
"*list of quoted-printable decoder program name and its arguments.")
(as-binary-process
(apply (function call-process-region)
start end (car quoted-printable-external-decoder)
- t t nil (cdr quoted-printable-external-decoder))
- )))
+ t t nil
+ (cdr quoted-printable-external-decoder)))))
+
(defvar quoted-printable-internal-decoding-limit nil
"*limit size to use internal quoted-printable decoder.
otherwise it calls external quoted-printable decoder specified by
`quoted-printable-external-decoder'. In this case, you must install
the program (maybe mmencode included in metamail or XEmacs package)."
- (interactive "r")
+ (interactive "*r")
(if (and quoted-printable-internal-decoding-limit
(> (- end start) quoted-printable-internal-decoding-limit))
(quoted-printable-external-decode-region start end)
- (quoted-printable-internal-decode-region start end)
- ))
+ (quoted-printable-internal-decode-region start end)))
+
+(defun quoted-printable-decode-string (string)
+ "Decode STRING which is encoded in quoted-printable, and return the result."
+ (with-temp-buffer
+ (insert string)
+ (quoted-printable-decode-region (point-min)(point-max))
+ (buffer-string)))
+
+
+(mel-define-method-function
+ (mime-decode-string string (nil "quoted-printable"))
+ 'quoted-printable-decode-string)
+
+(mel-define-method-function
+ (mime-decode-region start end (nil "quoted-printable"))
+ 'quoted-printable-decode-region)
+
+
+(defvar quoted-printable-external-decoder-option-to-specify-file '("-o")
+ "*list of options of quoted-printable decoder program to specify file.
+If the quoted-printable decoder does not have such option, set this as nil.")
+
+(mel-define-method mime-write-decoded-region (start end filename
+ (nil "quoted-printable"))
+ "Decode and write current region encoded by quoted-printable into FILENAME.
+START and END are buffer positions."
+ (interactive "*r\nFWrite decoded region to file: ")
+ (as-binary-process
+ (apply (function call-process-region)
+ start end (car quoted-printable-external-decoder)
+ (null quoted-printable-external-decoder-option-to-specify-file)
+ (unless quoted-printable-external-decoder-option-to-specify-file
+ (list (current-buffer) nil))
+ nil
+ (delq nil
+ (append
+ (cdr quoted-printable-external-decoder)
+ quoted-printable-external-decoder-option-to-specify-file
+ (when quoted-printable-external-decoder-option-to-specify-file
+ (list filename))))))
+ (unless quoted-printable-external-decoder-option-to-specify-file
+ (write-region-as-binary (point-min) (point-max) filename)))
\f
;;; @ Q-encoding encode/decode string
MODE allows `text', `comment', `phrase' or nil. Default value is
`phrase'."
(let ((specials (cdr (or (assq mode q-encoding-special-chars-alist)
- (assq 'phrase q-encoding-special-chars-alist)
- ))))
+ (assq 'phrase q-encoding-special-chars-alist)))))
(mapconcat (function
(lambda (chr)
(cond ((eq chr ? ) "_")
((or (< chr 32) (< 126 chr)
- (memq chr specials)
- )
- (quoted-printable-quote-char chr)
- )
+ (memq chr specials))
+ (quoted-printable-quote-char chr))
(t
- (char-to-string chr)
- ))
- ))
- string "")
- ))
+ (char-to-string chr)))))
+ string "")))
(defun q-encoding-decode-string (string)
"Decode STRING which is encoded in Q-encoding and return the result."
((eq chr ?=)
(setq q t)
"")
- (q (setq h (cond ((<= ?a chr) (+ (- chr ?a) 10))
- ((<= ?A chr) (+ (- chr ?A) 10))
- ((<= ?0 chr) (- chr ?0))
- ))
+ (q (setq h (quoted-printable-hex-char-to-num chr))
(setq q nil)
"")
- (h (setq l (cond ((<= ?a chr) (+ (- chr ?a) 10))
- ((<= ?A chr) (+ (- chr ?A) 10))
- ((<= ?0 chr) (- chr ?0))
- ))
+ (h (setq l (quoted-printable-hex-char-to-num chr))
(prog1
- (char-to-string (logior (ash h 4) l))
- (setq h nil)
- )
- )
- (t (char-to-string chr))
- )))
+ (char-to-string
+ (quoted-printable-num-to-raw-byte-char
+ (logior (ash h 4) l)))
+ (setq h nil)))
+ (t (char-to-string chr)))))
string "")))
+(mel-define-method-function (encoded-text-encode-string string (nil "Q"))
+ 'q-encoding-encode-string)
-;;; @@ etc
-;;;
-
-(defun q-encoding-printable-char-p (chr mode)
- (and (not (memq chr '(?= ?? ?_)))
- (<= ?\ chr)(<= chr ?~)
- (cond ((eq mode 'text) t)
- ((eq mode 'comment)
- (not (memq chr '(?\( ?\) ?\\)))
- )
- (t
- (string-match "[A-Za-z0-9!*+/=_---]" (char-to-string chr))
- ))))
-
-(defun q-encoding-encoded-length (string &optional mode)
- (let ((l 0)(i 0)(len (length string)) chr)
- (while (< i len)
- (setq chr (elt string i))
- (if (q-encoding-printable-char-p chr mode)
- (setq l (+ l 1))
- (setq l (+ l 3))
- )
- (setq i (+ i 1)) )
- l))
+(mel-define-method encoded-text-decode-string (string (nil "Q"))
+ (if (string-match (eval-when-compile
+ (concat "\\`" Q-encoded-text-regexp "\\'"))
+ string)
+ (q-encoding-decode-string string)
+ (error "Invalid encoded-text %s" string)))
;;; @ end
(provide 'mel-q)
-;;; mel-q.el ends here
+;;; mel-q.el ends here.
projects / elisp / flim.git / blobdiff