(require 'emu)
-(defconst mel-version "7.3")
-
;;; @ variable
;;;
-(defvar mime-temp-directory (or (getenv "MIME_TMP_DIR")
- (getenv "TM_TMP_DIR")
- "/tmp/")
- "*Directory for temporary files.")
+(defvar base64-internal-encoding-limit 1000
+ "*limit size to use internal base64 encoder.
+If size of input to encode is larger than this limit,
+external encoder is called.")
+
+(defvar base64-internal-decoding-limit 1000
+ "*limit size to use internal base64 decoder.
+ size of input to decode is larger than this limit,
+external decoder is called.")
+
+(defvar quoted-printable-internal-encoding-limit
+ (if (and (featurep 'xemacs)(featurep 'mule))
+ 0
+ (require 'path-util)
+ (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.")
+
+
+;;; @ autoload
+;;;
+;; mel-dl
(defvar base64-dl-module
(and (fboundp 'dynamic-link)
- (expand-file-name "base64.so" exec-directory)))
+ (let ((path (expand-file-name "base64.so" exec-directory)))
+ (and (file-exists-p path)
+ path))))
+
+(when base64-dl-module
+ (autoload 'base64-dl-encode-string "mel-dl"
+ "Encode STRING to base64, and return the result.")
+ (autoload 'base64-dl-decode-string "mel-dl"
+ "Decode STRING which is encoded in base64, and return the result.")
+ (autoload 'base64-dl-encode-region "mel-dl"
+ "Encode current region by base64." t)
+ (autoload 'base64-dl-decode-region "mel-dl"
+ "Decode current region by base64." t))
+
+;; mel-b
+(autoload 'base64-internal-encode-string "mel-b"
+ "Encode STRING to base64, and return the result.")
+(autoload 'base64-internal-decode-string "mel-b"
+ "Decode STRING which is encoded in base64, and return the result.")
+(autoload 'base64-internal-encode-region "mel-b"
+ "Encode current region by base64." t)
+(autoload 'base64-internal-decode-region "mel-b"
+ "Decode current region by base64." t)
+(autoload 'base64-internal-insert-encoded-file "mel-b"
+ "Encode contents of file to base64, and insert the result." t)
+(autoload 'base64-internal-write-decoded-region "mel-b"
+ "Decode and write current region encoded by base64 into FILENAME." t)
+
+(autoload 'base64-external-encode-string "mel-b"
+ "Encode STRING to base64, and return the result.")
+(autoload 'base64-external-decode-string "mel-b"
+ "Decode STRING which is encoded in base64, and return the result.")
+(autoload 'base64-external-encode-region "mel-b"
+ "Encode current region by base64." t)
+(autoload 'base64-external-decode-region "mel-b"
+ "Decode current region by base64." t)
+(autoload 'base64-external-insert-encoded-file "mel-b"
+ "Encode contents of file to base64, and insert the result." t)
+(autoload 'base64-external-write-decoded-region "mel-b"
+ "Decode and write current region encoded by base64 into FILENAME." t)
+;; for encoded-word
+(autoload 'base64-internal-encoded-length "mel-b")
-;;; @ autoload
-;;;
+;; mel-q
+(autoload 'quoted-printable-internal-encode-string "mel-q"
+ "Encode STRING to quoted-printable, and return the result.")
+(autoload 'quoted-printable-internal-decode-string "mel-q"
+ "Decode STRING which is encoded in quoted-printable, and return the result.")
+(autoload 'quoted-printable-internal-encode-region "mel-q"
+ "Encode current region by Quoted-Printable." t)
+(autoload 'quoted-printable-internal-decode-region "mel-q"
+ "Decode current region by Quoted-Printable." t)
-(cond (base64-dl-module
- (autoload 'base64-encode-string "mel-dl"
- "Encode STRING to base64, and return the result.")
- (autoload 'base64-decode-string "mel-dl"
- "Decode STRING which is encoded in base64, and return the result.")
- (autoload 'base64-encode-region "mel-dl"
- "Encode current region by base64." t)
- (autoload 'base64-decode-region "mel-dl"
- "Decode current region by base64." t)
- (autoload 'base64-insert-encoded-file "mel-dl"
- "Encode contents of file to base64, and insert the result." t)
- (autoload 'base64-write-decoded-region "mel-dl"
- "Decode and write current region encoded by base64 into FILENAME." t)
- ;; for encoded-word
- (autoload 'base64-encoded-length "mel-dl")
- )
- (t
- (autoload 'base64-encode-string "mel-b"
- "Encode STRING to base64, and return the result.")
- (autoload 'base64-decode-string "mel-b"
- "Decode STRING which is encoded in base64, and return the result.")
- (autoload 'base64-encode-region "mel-b"
- "Encode current region by base64." t)
- (autoload 'base64-decode-region "mel-b"
- "Decode current region by base64." t)
- (autoload 'base64-insert-encoded-file "mel-b"
- "Encode contents of file to base64, and insert the result." t)
- (autoload 'base64-write-decoded-region "mel-b"
- "Decode and write current region encoded by base64 into FILENAME." t)
- ;; for encoded-word
- (autoload 'base64-encoded-length "mel-b")
- ))
-
-(autoload 'quoted-printable-encode-string "mel-q"
+(autoload 'quoted-printable-external-encode-string "mel-q"
"Encode STRING to quoted-printable, and return the result.")
-(autoload 'quoted-printable-decode-string "mel-q"
+(autoload 'quoted-printable-external-decode-string "mel-q"
"Decode STRING which is encoded in quoted-printable, and return the result.")
-(autoload 'quoted-printable-encode-region "mel-q"
+(autoload 'quoted-printable-external-encode-region "mel-q"
"Encode current region by Quoted-Printable." t)
-(autoload 'quoted-printable-decode-region "mel-q"
+(autoload 'quoted-printable-external-decode-region "mel-q"
"Decode current region by Quoted-Printable." t)
-(autoload 'quoted-printable-insert-encoded-file "mel-q"
+
+(autoload 'quoted-printable-external-insert-encoded-file "mel-q"
"Encode contents of file to quoted-printable, and insert the result." t)
-(autoload 'quoted-printable-write-decoded-region "mel-q"
+(autoload 'quoted-printable-external-write-decoded-region "mel-q"
"Decode and write current region encoded by quoted-printable into FILENAME."
t)
+
;; for encoded-word
-(autoload 'q-encoding-encode-string "mel-q"
+(autoload 'q-encoding-internal-encode-string "mel-q"
"Encode STRING to Q-encoding of encoded-word, and return the result.")
-(autoload 'q-encoding-decode-string "mel-q"
+(autoload 'q-encoding-internal-decode-string "mel-q"
"Decode STRING which is encoded in Q-encoding and return the result.")
-(autoload 'q-encoding-encoded-length "mel-q")
+(autoload 'q-encoding-internal-encoded-length "mel-q")
-(autoload 'uuencode-encode-region "mel-u"
+;; mel-u
+(autoload 'uuencode-external-encode-region "mel-u"
"Encode current region by unofficial uuencode format." t)
-(autoload 'uuencode-decode-region "mel-u"
+(autoload 'uuencode-external-decode-region "mel-u"
"Decode current region by unofficial uuencode format." t)
-(autoload 'uuencode-insert-encoded-file "mel-u"
+(autoload 'uuencode-external-insert-encoded-file "mel-u"
"Insert file encoded by unofficial uuencode format." t)
-(autoload 'uuencode-write-decoded-region "mel-u"
+(autoload 'uuencode-external-write-decoded-region "mel-u"
"Decode and write current region encoded by uuencode into FILENAME." t)
-(autoload 'gzip64-encode-region "mel-g"
+;; mel-g
+(autoload 'gzip64-external-encode-region "mel-g"
"Encode current region by unofficial x-gzip64 format." t)
-(autoload 'gzip64-decode-region "mel-g"
+(autoload 'gzip64-external-decode-region "mel-g"
"Decode current region by unofficial x-gzip64 format." t)
-(autoload 'gzip64-insert-encoded-file "mel-g"
+(autoload 'gzip64-external-insert-encoded-file "mel-g"
"Insert file encoded by unofficial gzip64 format." t)
-(autoload 'gzip64-write-decoded-region "mel-g"
+(autoload 'gzip64-external-write-decoded-region "mel-g"
"Decode and write current region encoded by gzip64 into FILENAME." t)
+;; mel-ccl
+(when (fboundp 'make-ccl-coding-system)
+ (unless (and (boundp 'ccl-encoder-eof-block-is-broken)
+ ccl-encoder-eof-block-is-broken)
+ (autoload 'base64-ccl-encode-string "mel-ccl"
+ "Encode STRING with base64 encoding.")
+ (autoload 'base64-ccl-encode-region "mel-ccl"
+ "Encode region from START to END with base64 encoding." t)
+ (autoload 'base64-ccl-insert-encoded-file "mel-ccl"
+ "Encode contents of file FILENAME to base64, and insert the result." t))
+
+ (autoload 'base64-ccl-decode-string "mel-ccl"
+ "Decode base64 encoded STRING")
+ (autoload 'base64-ccl-decode-region "mel-ccl"
+ "Decode base64 encoded STRING" t)
+ (autoload 'base64-ccl-write-decoded-region "mel-ccl"
+ "Decode the region from START to END and write out to FILENAME." t)
+
+ (unless (and (boundp 'ccl-encoder-eof-block-is-broken)
+ ccl-encoder-eof-block-is-broken)
+ (autoload 'quoted-printable-ccl-encode-string "mel-ccl"
+ "Encode STRING with quoted-printable encoding.")
+ (autoload 'quoted-printable-ccl-encode-region "mel-ccl"
+ "Encode the region from START to END with quoted-printable
+ encoding." t)
+ (autoload 'quoted-printable-ccl-insert-encoded-file "mel-ccl"
+ "Encode contents of the file named as FILENAME, and insert it." t))
+
+ (autoload 'quoted-printable-ccl-decode-string "mel-ccl"
+ "Decode quoted-printable encoded STRING.")
+ (autoload 'quoted-printable-ccl-decode-region "mel-ccl"
+ "Decode the region from START to END with quoted-printable
+ encoding.")
+ (autoload 'quoted-printable-ccl-write-decoded-region "mel-ccl"
+ "Decode quoted-printable encoded current region and write out to FILENAME." t)
+
+ (autoload 'q-encoding-ccl-encode-string "mel-ccl"
+ "Encode STRING to Q-encoding of encoded-word, and return the result.
+ MODE allows `text', `comment', `phrase' or nil. Default value is
+ `phrase'.")
+ (autoload 'q-encoding-ccl-decode-string "mel-ccl"
+ "Decode Q encoded STRING and return the result.")
+
+ (unless running-xemacs
+ (autoload 'q-encoding-ccl-encoded-length "mel-ccl"
+ "Encode STRING to Q-encoding of encoded-word, and return the result.
+MODE allows `text', `comment', `phrase' or nil. Default value is
+`phrase'.")
+ )
+ )
+
+
+;;; @ entrance functions.
+;;;
+
+(cond
+ ((fboundp 'base64-dl-encode-string)
+ (defalias 'base64-encode-string 'base64-dl-encode-string))
+ ((fboundp 'base64-ccl-encode-string)
+ (defalias 'base64-encode-string 'base64-ccl-encode-string))
+ (t
+ (defalias 'base64-encode-string 'base64-internal-encode-string)))
+
+(defun base64-internal-external-decode-string (string)
+ "Decode STRING which is encoded in base64, and return the result.
+This function calls internal base64 decoder if size of STRING is
+smaller than `base64-internal-decoding-limit', otherwise it calls
+external base64 decoder specified by `base64-external-decoder'. In
+this case, you must install the program (maybe mmencode included in
+metamail or XEmacs package)."
+ (interactive "r")
+ (if (and base64-internal-decoding-limit
+ (> (length string) base64-internal-decoding-limit))
+ (base64-external-decode-string string)
+ (base64-internal-decode-string string)))
+
+(cond
+ ((fboundp 'base64-dl-decode-string)
+ (defalias 'base64-decode-string 'base64-dl-decode-string))
+ ((fboundp 'base64-ccl-decode-string)
+ (defalias 'base64-decode-string 'base64-ccl-decode-string))
+ (t
+ (defalias 'base64-decode-string 'base64-internal-external-decode-string)))
+
+(defun base64-internal-external-encode-region (start end)
+ "Encode current region by base64.
+START and END are buffer positions.
+This function calls internal base64 encoder if size of region is
+smaller than `base64-internal-encoding-limit', otherwise it calls
+external base64 encoder specified by `base64-external-encoder'. In
+this case, you must install the program (maybe mmencode included in
+metamail or XEmacs package)."
+ (interactive "r")
+ (if (and base64-internal-encoding-limit
+ (> (- end start) base64-internal-encoding-limit))
+ (base64-external-encode-region start end)
+ (base64-internal-encode-region start end)))
+
+(cond
+ ((fboundp 'base64-dl-encode-region)
+ (defalias 'base64-encode-region 'base64-dl-encode-region)) ; no fold
+ ((fboundp 'base64-ccl-encode-region)
+ (defalias 'base64-encode-region 'base64-ccl-encode-region)) ; LF fold
+ (t
+ (defalias 'base64-encode-region 'base64-internal-external-encode-region))) ; LF fold
+
+(defun base64-internal-external-decode-region (start end)
+ "Decode current region by base64.
+START and END are buffer positions.
+This function calls internal base64 decoder if size of region is
+smaller than `base64-internal-decoding-limit', otherwise it calls
+external base64 decoder specified by `base64-external-decoder'. In
+this case, you must install the program (maybe mmencode included in
+metamail or XEmacs package)."
+ (interactive "r")
+ (if (and base64-internal-decoding-limit
+ (> (- end start) base64-internal-decoding-limit))
+ (base64-external-decode-region start end)
+ (base64-internal-decode-region start end)))
+
+(cond
+ ((fboundp 'base64-dl-decode-region)
+ (defalias 'base64-decode-region 'base64-dl-decode-region))
+ ((fboundp 'base64-ccl-decode-region)
+ (defalias 'base64-decode-region 'base64-ccl-decode-region))
+ (t
+ (defalias 'base64-decode-region 'base64-internal-external-decode-region)))
+
+(defun base64-internal-external-insert-encoded-file (filename)
+ "Encode contents of file FILENAME to base64, and insert the result.
+It calls external base64 encoder specified by
+`base64-external-encoder'. So you must install the program (maybe
+mmencode included in metamail or XEmacs package)."
+ (interactive (list (read-file-name "Insert encoded file: ")))
+ (if (and base64-internal-encoding-limit
+ (> (nth 7 (file-attributes filename))
+ base64-internal-encoding-limit))
+ (base64-external-insert-encoded-file filename)
+ (base64-internal-insert-encoded-file filename)))
+
+(cond
+ ((fboundp 'base64-ccl-insert-encoded-file)
+ (defalias 'base64-insert-encoded-file 'base64-ccl-insert-encoded-file))
+ (t
+ (defalias 'base64-insert-encoded-file 'base64-internal-external-insert-encoded-file)))
+
+(defun base64-internal-external-write-decoded-region (start end filename)
+ "Decode and write current region encoded by base64 into FILENAME.
+START and END are buffer positions."
+ (interactive
+ (list (region-beginning) (region-end)
+ (read-file-name "Write decoded region to file: ")))
+ (if (and base64-internal-decoding-limit
+ (> (- end start) base64-internal-decoding-limit))
+ (base64-external-write-decoded-region start end filename)
+ (base64-internal-write-decoded-region start end filename)))
+
+(cond
+ ((fboundp 'base64-ccl-write-decoded-region)
+ (defalias 'base64-write-decoded-region 'base64-ccl-write-decoded-region))
+ (t
+ (defalias 'base64-write-decoded-region 'base64-internal-external-write-decoded-region)))
+
+(cond
+ (t
+ (defalias 'base64-encoded-length 'base64-internal-encoded-length)))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-encode-string)
+ (defalias 'quoted-printable-encode-string 'quoted-printable-ccl-encode-string))
+ (t
+ (defun quoted-printable-encode-string (string)
+ "Encode STRING to quoted-printable, and return the result."
+ (if (and quoted-printable-internal-encoding-limit
+ (> (length string) quoted-printable-internal-encoding-limit))
+ (quoted-printable-external-encode-string string)
+ (quoted-printable-internal-encode-string string)))))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-decode-string)
+ (defalias 'quoted-printable-decode-string 'quoted-printable-ccl-decode-string))
+ (t
+ (defun quoted-printable-decode-string (string)
+ "Decode STRING which is encoded in quoted-printable, and return the result."
+ (if (and quoted-printable-internal-decoding-limit
+ (> (length string) quoted-printable-internal-decoding-limit))
+ (quoted-printable-external-decode-string string)
+ (quoted-printable-internal-decode-string string)))))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-encode-region)
+ (defalias 'quoted-printable-encode-region 'quoted-printable-ccl-encode-region))
+ (t
+ (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)
+ ))))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-decode-region)
+ (defalias 'quoted-printable-decode-region 'quoted-printable-ccl-decode-region))
+ (t
+ (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
+region is smaller than `quoted-printable-internal-decoding-limit',
+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")
+ (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)
+ ))))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-insert-encoded-file)
+ (defalias 'quoted-printable-insert-encoded-file 'quoted-printable-ccl-insert-encoded-file))
+ (t
+ (defalias 'quoted-printable-insert-encoded-file 'quoted-printable-external-insert-encoded-file)))
+
+(cond
+ ((fboundp 'quoted-printable-ccl-write-decoded-region)
+ (defalias 'quoted-printable-write-decoded-region 'quoted-printable-ccl-write-decoded-region))
+ (t
+ (defalias 'quoted-printable-write-decoded-region 'quoted-printable-external-write-decoded-region)))
+
+(cond
+ ((fboundp 'q-encoding-ccl-encode-string)
+ (defalias 'q-encoding-encode-string 'q-encoding-ccl-encode-string))
+ (t
+ (defalias 'q-encoding-encode-string 'q-encoding-internal-encode-string)))
+
+(cond
+ ((fboundp 'q-encoding-ccl-decode-string)
+ (defalias 'q-encoding-decode-string 'q-encoding-ccl-decode-string))
+ (t
+ (defalias 'q-encoding-decode-string 'q-encoding-internal-decode-string)))
+
+(cond
+ ((fboundp 'q-encoding-ccl-encoded-length)
+ (defalias 'q-encoding-encoded-length 'q-encoding-ccl-encoded-length))
+ (t
+ (defalias 'q-encoding-encoded-length 'q-encoding-internal-encoded-length)))
+
+(cond
+ (t
+ (defalias 'uuencode-encode-region 'uuencode-external-encode-region)))
+
+(cond
+ (t
+ (defalias 'uuencode-decode-region 'uuencode-external-decode-region)))
+
+(cond
+ (t
+ (defalias 'uuencode-insert-encoded-file 'uuencode-external-insert-encoded-file)))
+
+(cond
+ (t
+ (defalias 'uuencode-write-decoded-region 'uuencode-external-write-decoded-region)))
+
+(cond
+ (t
+ (defalias 'gzip64-encode-region 'gzip64-external-encode-region)))
+
+(cond
+ (t
+ (defalias 'gzip64-decode-region 'gzip64-external-decode-region)))
+
+(cond
+ (t
+ (defalias 'gzip64-insert-encoded-file 'gzip64-external-insert-encoded-file)))
+
+(cond
+ (t
+ (defalias 'gzip64-write-decoded-region 'gzip64-external-write-decoded-region)))
;;; @ region
;;;
)))
+;;; @ string
+;;;
+
+;;;###autoload
+(defvar mime-string-decoding-method-alist
+ '(("base64" . base64-decode-string)
+ ("quoted-printable" . quoted-printable-decode-string)
+ ("7bit" . identity)
+ ("8bit" . identity)
+ ("binary" . identity)
+ )
+ "Alist of encoding vs. corresponding method to decode string.
+Each element looks like (STRING . FUNCTION).
+STRING is content-transfer-encoding.
+FUNCTION is string decoder.")
+
+;;;###autoload
+(defun mime-decode-string (string encoding)
+ "Decode STRING using ENCODING.
+ENCODING must be string. If ENCODING is found in
+`mime-string-decoding-method-alist' as its key, this function decodes
+the STRING by its value."
+ (let ((f (cdr (assoc encoding mime-string-decoding-method-alist))))
+ (if f
+ (funcall f string)
+ (with-temp-buffer
+ (insert string)
+ (mime-decode-region (point-min)(point-max) encoding)
+ (buffer-string)
+ ))))
+
+
;;; @ file
;;;