From 72faddcc83e13d36b58bdeb5b4fe8250ffe52447 Mon Sep 17 00:00:00 2001
From: morioka <morioka>
Date: Sat, 19 Sep 1998 18:02:28 +0000
Subject: [PATCH] (base64-encode-region): Define directly (abolish
 `base64-dl-encode-region'). (base64-decode-region): Define
 directly (abolish `base64-dl-decode-region'). Define method
 functions of mel. (mime-insert-encoded-file): Use
 `mel-define-method'; abolish `base64-insert-encoded-file';
 don't use external encoder. (mime-write-decoded-region):
 Use `mel-define-method'; abolish
 `base64-write-decoded-region'; don't use external decoder.
 - Move `base64-encoded-length' to mel.el.

---
 mel-dl.el |   87 ++++++++++++++++++++++++++++++-------------------------------
 1 file changed, 43 insertions(+), 44 deletions(-)

diff --git a/mel-dl.el b/mel-dl.el
index e1df065..1995d5d 100644
--- a/mel-dl.el
+++ b/mel-dl.el
@@ -25,20 +25,20 @@
 ;;; Code:
 
 (require 'emu)
+(require 'mime-def)
 
-(defvar base64-dl-module
-  (expand-file-name "base64.so" exec-directory))
+(eval-and-compile
+  (defvar base64-dl-module
+    (expand-file-name "base64.so" exec-directory))
 
-(defvar base64-dl-handle
-  (and (file-exists-p base64-dl-module)
-       (dynamic-link base64-dl-module)))
+  (defvar base64-dl-handle
+    (and (file-exists-p base64-dl-module)
+	 (dynamic-link base64-dl-module)))
 
-(dynamic-call "emacs_base64_init" base64-dl-handle)
-
-(defalias 'base64-dl-encode-string 'encode-base64-string)
-(defalias 'base64-dl-decode-string 'decode-base64-string)
+  (dynamic-call "emacs_base64_init" base64-dl-handle)
+  )
 
-(defun base64-dl-encode-region (start end)
+(defun base64-encode-region (start end)
   "Encode current region by base64.
 START and END are buffer positions."
   (interactive "r")
@@ -50,7 +50,7 @@ START and END are buffer positions."
       (insert "\n"))
   )
 
-(defun base64-dl-decode-region (start end)
+(defun base64-decode-region (start end)
   "Decode current region by base64.
 START and END are buffer positions."
   (interactive "r")
@@ -63,57 +63,56 @@ START and END are buffer positions."
 
 (defalias 'base64-encode-string 'encode-base64-string)
 (defalias 'base64-decode-string 'decode-base64-string)
-(defalias 'base64-encode-region 'base64-dl-encode-region)
-(defalias 'base64-decode-region 'base64-dl-decode-region)
 
 
-;;; @ base64 encoder/decoder for file
-;;;
+(mel-define-method-function (mime-encode-string string (nil "base64"))
+			    'encode-base64-string)
+(mel-define-method-function (mime-decode-string string (nil "base64"))
+			    'decode-base64-string)
+(mel-define-method-function (mime-encode-region start end (nil "base64"))
+			    'base64-encode-region)
+(mel-define-method-function (mime-decode-region start end (nil "base64"))
+			    'base64-decode-region)
 
-(defvar base64-external-encoder '("mmencode")
-  "*list of base64 encoder program name and its arguments.")
+(mel-define-method-function (encoded-text-encode-string string (nil "B"))
+			    'encode-base64-string)
 
-(defvar base64-external-decoder '("mmencode" "-u")
-  "*list of base64 decoder program name and its arguments.")
+(mel-define-method encoded-text-decode-string (string (nil "B"))
+  (if (and (string-match B-encoded-text-regexp string)
+	   (string= string (match-string 0 string)))
+      (decode-base64-string string)
+    (error "Invalid encoded-text %s" string)))
 
-(defvar base64-external-decoder-option-to-specify-file '("-o")
-  "*list of options of base64 decoder program to specify file.")
 
-(defun base64-insert-encoded-file (filename)
+;;; @ base64 encoder/decoder for file
+;;;
+
+(mel-define-method mime-insert-encoded-file (filename (nil "base64"))
   "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: ")))
-  (apply (function call-process) (car base64-external-encoder)
-	 filename t nil (cdr base64-external-encoder))
+  (insert (encode-base64-string
+	   (with-temp-buffer
+	     (insert-file-contents-as-binary filename)
+	     (buffer-string))))
+  (or (bolp)
+      (insert "\n"))
   )
 
-(defun base64-write-decoded-region (start end filename)
+(mel-define-method mime-write-decoded-region (start end filename
+						    (nil "base64"))
   "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: ")))
-  (as-binary-process
-   (apply (function call-process-region)
-	  start end (car base64-external-decoder)
-	  nil nil nil
-	  (append (cdr base64-external-decoder)
-		  base64-external-decoder-option-to-specify-file
-		  (list filename))
-	  )))
-
-
-;;; @ etc
-;;;
-
-(defun base64-encoded-length (string)
-  (let ((len (length string)))
-    (* (+ (/ len 3)
-	  (if (= (mod len 3) 0) 0 1)
-	  ) 4)
-    ))
+  (let ((str (buffer-substring start end)))
+    (with-temp-buffer
+      (insert (decode-base64-string str))
+      (write-region-as-binary (point-min) (point-max) filename)
+      )))
 
 
 ;;; @ end
-- 
1.7.10.4