;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Created: 1995/6/25
-;; Version: $Id: mel-q.el,v 6.5 1997/04/30 17:23:04 morioka Exp $
+;; 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).
(require 'emu)
-;;; @ constants
+;;; @ Quoted-Printable encoder
;;;
(defconst quoted-printable-hex-chars "0123456789ABCDEF")
-(defconst quoted-printable-octet-regexp
- (concat "=[" quoted-printable-hex-chars
- "][" quoted-printable-hex-chars "]"))
+(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)))
+ ))
-;;; @ variables
-;;;
+(defun quoted-printable-internal-encode-region (start end)
+ (save-excursion
+ (save-restriction
+ (narrow-to-region start end)
+ (goto-char start)
+ (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))
+ ))
+ )))
+ )))))
(defvar quoted-printable-external-encoder '("mmencode" "-q")
"*list of quoted-printable encoder program name and its arguments.")
-(defvar quoted-printable-external-decoder '("mmencode" "-q" "-u")
- "*list of quoted-printable decoder program name and its arguments.")
+(defun quoted-printable-external-encode-region (start end)
+ (save-excursion
+ (save-restriction
+ (narrow-to-region start end)
+ (as-binary-process
+ (apply (function call-process-region)
+ start end (car 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 "")
+ )
+ )))
-(defvar quoted-printable-internal-encoding-limit 10000
+(defvar quoted-printable-internal-encoding-limit
+ (if (and (featurep 'xemacs)(featurep 'mule))
+ 0
+ (require 'file-detect)
+ (if (exec-installed-p "mmencode")
+ 1000
+ (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,
external encoder is called.")
-(defvar quoted-printable-internal-decoding-limit nil
- "*limit size to use internal quoted-printable decoder.
-If size of input to decode is larger than this limit,
-external decoder is called.")
-
-
-;;; @ Quoted-Printable (Q-encode) encoder/decoder
-;;;
+(defun quoted-printable-encode-region (start end)
+ "Encode current region by quoted-printable.
+START and END are buffer positions.
+This function calls internal quoted-printable encoder if size of
+region is smaller than `quoted-printable-internal-encoding-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")
+ (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)
+ ))
-(defun byte-to-hex-string (num)
- (concat (char-to-string (elt quoted-printable-hex-chars (ash num -4)))
- (char-to-string (elt quoted-printable-hex-chars (logand num 15)))
- ))
+(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)
+ ))
-(defun quoted-printable-quote-char (chr)
- (concat "="
- (char-to-string (elt quoted-printable-hex-chars (ash chr -4)))
- (char-to-string (elt quoted-printable-hex-chars (logand chr 15)))
- ))
+(defun quoted-printable-insert-encoded-file (filename)
+ "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))
+ )
-;;; @@ Quoted-Printable encoder/decoder for string
+;;; @ Quoted-Printable decoder
;;;
-(defun quoted-printable-encode-string (string)
- "Encode STRING to quoted-printable, and return the result."
- (let ((i 0))
- (mapconcat (function
- (lambda (chr)
- (cond ((eq chr ?\n)
- (setq i 0)
- "\n")
- ((or (< chr 32) (< 126 chr) (eq chr ?=))
- (if (>= i 73)
- (progn
- (setq i 3)
- (concat "=\n" (quoted-printable-quote-char chr))
- )
- (progn
- (setq i (+ i 3))
- (quoted-printable-quote-char chr)
- )))
- (t (if (>= i 75)
- (progn
- (setq i 1)
- (concat "=\n" (char-to-string chr))
- )
- (progn
- (setq i (1+ i))
- (char-to-string chr)
- )))
- )))
- string "")))
-
(defun quoted-printable-decode-string (string)
"Decode STRING which is encoded in quoted-printable, and return the result."
(let (q h l)
)))
string "")))
+(defconst quoted-printable-octet-regexp
+ (concat "=[" quoted-printable-hex-chars
+ "][" quoted-printable-hex-chars "]"))
-;;; @@ Quoted-Printable encoder/decoder for region
-;;;
-
-(defun quoted-printable-internal-encode-region (beg end)
- (save-excursion
- (save-restriction
- (narrow-to-region beg end)
- (let ((str (buffer-substring beg end)))
- (delete-region beg end)
- (insert (quoted-printable-encode-string str))
- )
- (or (bolp)
- (insert "=\n")
- )
- )))
-
-(defun quoted-printable-internal-decode-region (beg end)
+(defun quoted-printable-internal-decode-region (start end)
(save-excursion
(save-restriction
- (narrow-to-region beg end)
+ (narrow-to-region start end)
(goto-char (point-min))
(while (re-search-forward "=\n" nil t)
(replace-match "")
))
)))
-(defun quoted-printable-external-encode-region (beg end)
- (save-excursion
- (save-restriction
- (narrow-to-region beg end)
- (as-binary-process
- (apply (function call-process-region)
- beg end (car 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 "")
- )
- )))
+(defvar quoted-printable-external-decoder '("mmencode" "-q" "-u")
+ "*list of quoted-printable decoder program name and its arguments.")
-(defun quoted-printable-external-decode-region (beg end)
+(defun quoted-printable-external-decode-region (start end)
(save-excursion
(as-binary-process
(apply (function call-process-region)
- beg end (car quoted-printable-external-decoder)
+ start end (car quoted-printable-external-decoder)
t t nil (cdr quoted-printable-external-decoder))
)))
-(defun quoted-printable-encode-region (beg end)
- "Encode current region by quoted-printable.
-START and END are buffer positions.
-This function calls internal quoted-printable encoder if size of
-region is smaller than `quoted-printable-internal-encoding-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")
- (if (and quoted-printable-internal-encoding-limit
- (> (- end beg) quoted-printable-internal-encoding-limit))
- (quoted-printable-external-encode-region beg end)
- (quoted-printable-internal-encode-region beg end)
- ))
+(defvar quoted-printable-internal-decoding-limit nil
+ "*limit size to use internal quoted-printable decoder.
+If size of input to decode is larger than this limit,
+external decoder is called.")
-(defun quoted-printable-decode-region (beg end)
+(defun quoted-printable-decode-region (start end)
"Decode current region by quoted-printable.
START and END are buffer positions.
This function calls internal quoted-printable decoder if size of
the program (maybe mmencode included in metamail or XEmacs package)."
(interactive "r")
(if (and quoted-printable-internal-decoding-limit
- (> (- end beg) quoted-printable-internal-decoding-limit))
- (quoted-printable-external-decode-region beg end)
- (quoted-printable-internal-decode-region beg end)
+ (> (- end start) quoted-printable-internal-decoding-limit))
+ (quoted-printable-external-decode-region start end)
+ (quoted-printable-internal-decode-region start end)
))
-
-;;; @@ Quoted-Printable encoder/decoder for file
-;;;
-
-(defun quoted-printable-insert-encoded-file (filename)
- "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))
- )
-
\f
;;; @ Q-encoding encode/decode string
;;;
))))
(mapconcat (function
(lambda (chr)
- (cond ((eq chr 32) "_")
+ (cond ((eq chr ? ) "_")
((or (< chr 32) (< 126 chr)
(memq chr specials)
)