This commit was manufactured by cvs2svn to create branch 'doodle'.

[elisp/flim.git] / mime-def.el

diff --git a/mime-def.el b/mime-def.el
index c870f25..2444b42 100644 (file)
--- a/mime-def.el
+++ b/mime-def.el
@@ -24,15 +24,26 @@
 
 ;;; Code:
 
-(defconst mime-library-version
-  '("FLAM-DOODLE" "\e$B4;;R\e(B 7.5YR7.0/11.0" 1 10 0)
-  "Implementation name, version name and numbers of MIME-library package.")
+(eval-and-compile
+  (defconst mime-library-product ["FLAM-DOODLE" (1 10 2) "\e$B@VGrFK\e(B 5.0YR8.0/6.0"]
+    "Product name, version number and code name of MIME-library package.")
+  )
+
+(defmacro mime-product-name (product)
+  `(aref ,product 0))
 
-(defconst mime-library-version-string
-  `,(concat (car mime-library-version) " "
+(defmacro mime-product-version (product)
+  `(aref ,product 1))
+
+(defmacro mime-product-code-name (product)
+  `(aref ,product 2))
+
+(defconst mime-library-version
+  (eval-when-compile
+    (concat (mime-product-name mime-library-product) " "
            (mapconcat #'number-to-string
-                      (cddr mime-library-version) ".")
-           " - \"" (cadr mime-library-version) "\""))
+                      (mime-product-version mime-library-product) ".")
+           " - \"" (mime-product-code-name mime-library-product) "\"")))
 
 
 ;;; @ variables
@@ -309,6 +320,9 @@ message/rfc822, `mime-entity' structures of them are included in
 (defvar mime-entity-implementation-alist nil)
 
 (defmacro mm-define-backend (type &optional parents)
+  "Define TYPE as a mm-backend.
+If PARENTS is specified, TYPE inherits PARENTS.
+Each parent must be backend name (symbol)."
   (if parents
       `(let ((rest ',(reverse parents)))
         (while rest
@@ -321,6 +335,11 @@ message/rfc822, `mime-entity' structures of them are included in
           ))))
 
 (defmacro mm-define-method (name args &rest body)
+  "Define NAME as a method function of (nth 1 (car ARGS)) backend.
+
+ARGS is like an argument list of lambda, but (car ARGS) must be
+specialized parameter.  (car (car ARGS)) is name of variable and (nth
+1 (car ARGS)) is name of backend."
   (let* ((specializer (car args))
         (class (nth 1 specializer))
         (self (car specializer)))
@@ -355,21 +374,72 @@ message/rfc822, `mime-entity' structures of them are included in
 ;;; @ for mel-backend
 ;;;
 
+(defvar mel-service-list nil)
+
 (defmacro mel-define-service (name &optional args &rest rest)
-  (if args
-      `(progn
-        (defvar ,(intern (format "%s-obarray" name)) (make-vector 1 nil))
-        (defun ,name ,args
-          ,@rest
-          (funcall (mel-find-function ',name ,(car (last args)))
-                   ,@(mm-arglist-to-arguments (butlast args)))
-          ))
-    `(defvar ,(intern (format "%s-obarray" name)) (make-vector 1 nil))
-    ))
+  "Define NAME as a service for Content-Transfer-Encodings.
+If ARGS is specified, NAME is defined as a generic function for the
+service."
+  `(progn
+     (add-to-list 'mel-service-list ',name)
+     (defvar ,(intern (format "%s-obarray" name)) (make-vector 1 nil))
+     ,@(if args
+          `((defun ,name ,args
+              ,@rest
+              (funcall (mel-find-function ',name ,(car (last args)))
+                       ,@(mm-arglist-to-arguments (butlast args)))
+              )))
+     ))
 
 (put 'mel-define-service 'lisp-indent-function 'defun)
 
+
+(defvar mel-encoding-module-alist nil)
+
+(defsubst mel-find-function-from-obarray (ob-array encoding)
+  (let* ((f (intern-soft encoding ob-array)))
+    (or f
+       (let ((rest (cdr (assoc encoding mel-encoding-module-alist))))
+         (while (and rest
+                     (progn
+                       (require (car rest))
+                       (null (setq f (intern-soft encoding ob-array)))
+                       ))
+           (setq rest (cdr rest))
+           )
+         f))))
+
+(defsubst mel-copy-method (service src-backend dst-backend)
+  (let* ((oa (symbol-value (intern (format "%s-obarray" service))))
+        (f (mel-find-function-from-obarray oa src-backend))
+        sym)
+    (when f
+      (setq sym (intern dst-backend oa))
+      (or (fboundp sym)
+         (fset sym (symbol-function f))
+         ))))
+       
+(defsubst mel-copy-backend (src-backend dst-backend)
+  (let ((services mel-service-list))
+    (while services
+      (mel-copy-method (car services) src-backend dst-backend)
+      (setq services (cdr services)))))
+
+(defmacro mel-define-backend (type &optional parents)
+  "Define TYPE as a mel-backend.
+If PARENTS is specified, TYPE inherits PARENTS.
+Each parent must be backend name (string)."
+  (cons 'progn
+       (mapcar (lambda (parent)
+                 `(mel-copy-backend ,parent ,type)
+                 )
+               parents)))
+
 (defmacro mel-define-method (name args &rest body)
+  "Define NAME as a method function of (nth 1 (car (last ARGS))) backend.
+ARGS is like an argument list of lambda, but (car (last ARGS)) must be
+specialized parameter.  (car (car (last ARGS))) is name of variable
+and (nth 1 (car (last ARGS))) is name of backend (encoding)."
   (let* ((specializer (car (last args)))
         (class (nth 1 specializer)))
     `(progn
@@ -381,6 +451,11 @@ message/rfc822, `mime-entity' structures of them are included in
 (put 'mel-define-method 'lisp-indent-function 'defun)
 
 (defmacro mel-define-method-function (spec function)
+  "Set SPEC's function definition to FUNCTION.
+First element of SPEC is service.
+Rest of ARGS is like an argument list of lambda, but (car (last ARGS))
+must be specialized parameter.  (car (car (last ARGS))) is name of
+variable and (nth 1 (car (last ARGS))) is name of backend (encoding)."
   (let* ((name (car spec))
         (args (cdr spec))
         (specializer (car (last args)))
@@ -401,6 +476,12 @@ message/rfc822, `mime-entity' structures of them are included in
         (intern ,class ,(intern (format "%s-obarray" name))))
        )))
 
+(defvar base64-dl-module
+  (and (fboundp 'dynamic-link)
+       (let ((path (expand-file-name "base64.so" exec-directory)))
+        (and (file-exists-p path)
+             path))))
+
 
 ;;; @ end
 ;;;