X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fgnus-int.el;fp=lisp%2Fgnus-int.el;h=0000000000000000000000000000000000000000;hb=b369cf058148bbe6dee0154df7bcc2a7c0cc63d0;hp=0fb9a1804cb2b29eb4fdf5688f97203222c334a5;hpb=73430ac519bb1723c621b7b393a1e37c949e4c16;p=elisp%2Fgnus.git-

diff --git a/lisp/gnus-int.el b/lisp/gnus-int.el
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--- a/lisp/gnus-int.el
+++ /dev/null
@@ -1,534 +0,0 @@
-;;; gnus-int.el --- backend interface functions for Gnus
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
-;;        Free Software Foundation, Inc.
-
-;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
-;;         MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Keywords: news
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
-;; GNU 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.
-
-;;; Commentary:
-
-;;; Code:
-
-(eval-when-compile (require 'cl))
-
-(require 'gnus)
-
-(defcustom gnus-open-server-hook nil
-  "Hook called just before opening connection to the news server."
-  :group 'gnus-start
-  :type 'hook)
-
-;;;
-;;; Server Communication
-;;;
-
-(defun gnus-start-news-server (&optional confirm)
-  "Open a method for getting news.
-If CONFIRM is non-nil, the user will be asked for an NNTP server."
-  (let (how)
-    (if gnus-current-select-method
-	;; Stream is already opened.
-	nil
-      ;; Open NNTP server.
-      (unless gnus-nntp-service
-	(setq gnus-nntp-server nil))
-      (when confirm
-	;; Read server name with completion.
-	(setq gnus-nntp-server
-	      (completing-read "NNTP server: "
-			       (mapcar (lambda (server) (list server))
-				       (cons (list gnus-nntp-server)
-					     gnus-secondary-servers))
-			       nil nil gnus-nntp-server)))
-
-      (when (and gnus-nntp-server
-		 (stringp gnus-nntp-server)
-		 (not (string= gnus-nntp-server "")))
-	(setq gnus-select-method
-	      (cond ((or (string= gnus-nntp-server "")
-			 (string= gnus-nntp-server "::"))
-		     (list 'nnspool (system-name)))
-		    ((string-match "^:" gnus-nntp-server)
-		     (list 'nnmh gnus-nntp-server
-			   (list 'nnmh-directory
-				 (file-name-as-directory
-				  (expand-file-name
-				   (substring gnus-nntp-server 1) "~/")))
-			   (list 'nnmh-get-new-mail nil)))
-		    (t
-		     (list 'nntp gnus-nntp-server)))))
-
-      (setq how (car gnus-select-method))
-      (cond
-       ((eq how 'nnspool)
-	(require 'nnspool)
-	(gnus-message 5 "Looking up local news spool..."))
-       ((eq how 'nnmh)
-	(require 'nnmh)
-	(gnus-message 5 "Looking up mh spool..."))
-       (t
-	(require 'nntp)))
-      (setq gnus-current-select-method gnus-select-method)
-      (gnus-run-hooks 'gnus-open-server-hook)
-      (or
-       ;; gnus-open-server-hook might have opened it
-       (gnus-server-opened gnus-select-method)
-       (gnus-open-server gnus-select-method)
-       gnus-batch-mode
-       (gnus-y-or-n-p
-	(format
-	 "%s (%s) open error: '%s'.  Continue? "
-	 (car gnus-select-method) (cadr gnus-select-method)
-	 (gnus-status-message gnus-select-method)))
-       (gnus-error 1 "Couldn't open server on %s"
-		   (nth 1 gnus-select-method))))))
-
-(defun gnus-check-group (group)
-  "Try to make sure that the server where GROUP exists is alive."
-  (let ((method (gnus-find-method-for-group group)))
-    (or (gnus-server-opened method)
-	(gnus-open-server method))))
-
-(defun gnus-check-server (&optional method silent)
-  "Check whether the connection to METHOD is down.
-If METHOD is nil, use `gnus-select-method'.
-If it is down, start it up (again)."
-  (let ((method (or method gnus-select-method)))
-    ;; Transform virtual server names into select methods.
-    (when (stringp method)
-      (setq method (gnus-server-to-method method)))
-    (if (gnus-server-opened method)
-	;; The stream is already opened.
-	t
-      ;; Open the server.
-      (unless silent
-	(gnus-message 5 "Opening %s server%s..." (car method)
-		      (if (equal (nth 1 method) "") ""
-			(format " on %s" (nth 1 method)))))
-      (gnus-run-hooks 'gnus-open-server-hook)
-      (prog1
-	  (condition-case ()
-	      (gnus-open-server method)
-	    (quit (message "Quit gnus-check-server")
-		  nil))
-	(unless silent
-	  (message ""))))))
-
-(defun gnus-get-function (method function &optional noerror)
-  "Return a function symbol based on METHOD and FUNCTION."
-  ;; Translate server names into methods.
-  (unless method
-    (error "Attempted use of a nil select method"))
-  (when (stringp method)
-    (setq method (gnus-server-to-method method)))
-  ;; Check cache of constructed names.
-  (let* ((method-sym (if gnus-agent
-			 (gnus-agent-get-function method)
-		       (car method)))
-	 (method-fns (get method-sym 'gnus-method-functions))
-	 (func (let ((method-fnlist-elt (assq function method-fns)))
-		 (unless method-fnlist-elt
-		   (setq method-fnlist-elt
-			 (cons function
-			       (intern (format "%s-%s" method-sym function))))
-		   (put method-sym 'gnus-method-functions
-			(cons method-fnlist-elt method-fns)))
-		 (cdr method-fnlist-elt))))
-    ;; Maybe complain if there is no function.
-    (unless (fboundp func)
-      (unless (car method)
-	(error "Trying to require a method that doesn't exist"))
-      (require (car method))
-      (when (not (fboundp func))
-	(if noerror
-	    (setq func nil)
-	  (error "No such function: %s" func))))
-    func))
-
-
-;;;
-;;; Interface functions to the backends.
-;;;
-
-(defun gnus-open-server (gnus-command-method)
-  "Open a connection to GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (let ((elem (assoc gnus-command-method gnus-opened-servers)))
-    ;; If this method was previously denied, we just return nil.
-    (if (eq (nth 1 elem) 'denied)
-	(progn
-	  (gnus-message 1 "Denied server")
-	  nil)
-      ;; Open the server.
-      (let ((result
-	     (funcall (gnus-get-function gnus-command-method 'open-server)
-		      (nth 1 gnus-command-method)
-		      (nthcdr 2 gnus-command-method))))
-	;; If this hasn't been opened before, we add it to the list.
-	(unless elem
-	  (setq elem (list gnus-command-method nil)
-		gnus-opened-servers (cons elem gnus-opened-servers)))
-	;; Set the status of this server.
-	(setcar (cdr elem) (if result 'ok 'denied))
-	;; Return the result from the "open" call.
-	result))))
-
-(defun gnus-close-server (gnus-command-method)
-  "Close the connection to GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'close-server)
-	   (nth 1 gnus-command-method)))
-
-(defun gnus-request-list (gnus-command-method)
-  "Request the active file from GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'request-list)
-	   (nth 1 gnus-command-method)))
-
-(defun gnus-request-list-newsgroups (gnus-command-method)
-  "Request the newsgroups file from GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'request-list-newsgroups)
-	   (nth 1 gnus-command-method)))
-
-(defun gnus-request-newgroups (date gnus-command-method)
-  "Request all new groups since DATE from GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (let ((func (gnus-get-function gnus-command-method 'request-newgroups t)))
-    (when func
-      (funcall func date (nth 1 gnus-command-method)))))
-
-(defun gnus-server-opened (gnus-command-method)
-  "Check whether a connection to GNUS-COMMAND-METHOD has been opened."
-  (unless (eq (gnus-server-status gnus-command-method)
-	      'denied)
-    (when (stringp gnus-command-method)
-      (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-    (funcall (inline (gnus-get-function gnus-command-method 'server-opened))
-	     (nth 1 gnus-command-method))))
-
-(defun gnus-status-message (gnus-command-method)
-  "Return the status message from GNUS-COMMAND-METHOD.
-If GNUS-COMMAND-METHOD is a string, it is interpreted as a group name.   The method
-this group uses will be queried."
-  (let ((gnus-command-method
-	 (if (stringp gnus-command-method)
-	     (gnus-find-method-for-group gnus-command-method)
-	   gnus-command-method)))
-    (funcall (gnus-get-function gnus-command-method 'status-message)
-	     (nth 1 gnus-command-method))))
-
-(defun gnus-request-regenerate (gnus-command-method)
-  "Request a data generation from GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'request-regenerate)
-	   (nth 1 gnus-command-method)))
-
-(defun gnus-request-group (group &optional dont-check gnus-command-method)
-  "Request GROUP.  If DONT-CHECK, no information is required."
-  (let ((gnus-command-method
-	 (or gnus-command-method (inline (gnus-find-method-for-group group)))))
-    (when (stringp gnus-command-method)
-      (setq gnus-command-method
-	    (inline (gnus-server-to-method gnus-command-method))))
-    (funcall (inline (gnus-get-function gnus-command-method 'request-group))
-	     (gnus-group-real-name group) (nth 1 gnus-command-method)
-	     dont-check)))
-
-(defun gnus-list-active-group (group)
-  "Request active information on GROUP."
-  (let ((gnus-command-method (gnus-find-method-for-group group))
-	(func 'list-active-group))
-    (when (gnus-check-backend-function func group)
-      (funcall (gnus-get-function gnus-command-method func)
-	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
-
-(defun gnus-request-group-description (group)
-  "Request a description of GROUP."
-  (let ((gnus-command-method (gnus-find-method-for-group group))
-	(func 'request-group-description))
-    (when (gnus-check-backend-function func group)
-      (funcall (gnus-get-function gnus-command-method func)
-	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
-
-(defun gnus-request-group-articles (group)
-  "Request a list of existing articles in GROUP."
-  (let ((gnus-command-method (gnus-find-method-for-group group))
-	(func 'request-group-articles))
-    (when (gnus-check-backend-function func group)
-      (funcall (gnus-get-function gnus-command-method func)
-	       (gnus-group-real-name group) (nth 1 gnus-command-method)))))
-
-(defun gnus-close-group (group)
-  "Request the GROUP be closed."
-  (let ((gnus-command-method (inline (gnus-find-method-for-group group))))
-    (funcall (gnus-get-function gnus-command-method 'close-group)
-	     (gnus-group-real-name group) (nth 1 gnus-command-method))))
-
-(defun gnus-retrieve-headers (articles group &optional fetch-old)
-  "Request headers for ARTICLES in GROUP.
-If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (if (and gnus-use-cache (numberp (car articles)))
-	(gnus-cache-retrieve-headers articles group fetch-old)
-      (funcall (gnus-get-function gnus-command-method 'retrieve-headers)
-	       articles (gnus-group-real-name group)
-	       (nth 1 gnus-command-method) fetch-old))))
-
-(defun gnus-retrieve-articles (articles group)
-  "Request ARTICLES in GROUP."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'retrieve-articles)
-	     articles (gnus-group-real-name group)
-	     (nth 1 gnus-command-method))))
-
-(defun gnus-retrieve-groups (groups gnus-command-method)
-  "Request active information on GROUPS from GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'retrieve-groups)
-	   groups (nth 1 gnus-command-method)))
-
-(defun gnus-request-type (group &optional article)
-  "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (if (not (gnus-check-backend-function
-	      'request-type (car gnus-command-method)))
-	'unknown
-      (funcall (gnus-get-function gnus-command-method 'request-type)
-	       (gnus-group-real-name group) article))))
-
-(defun gnus-request-set-mark (group action)
-  "Set marks on articles in the backend."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (if (not (gnus-check-backend-function
-	      'request-set-mark (car gnus-command-method)))
-	action
-      (funcall (gnus-get-function gnus-command-method 'request-set-mark)
-	       (gnus-group-real-name group) action
-	       (nth 1 gnus-command-method)))))
-
-(defun gnus-request-update-mark (group article mark)
-  "Allow the backend to change the mark the user tries to put on an article."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (if (not (gnus-check-backend-function
-	      'request-update-mark (car gnus-command-method)))
-	mark
-      (funcall (gnus-get-function gnus-command-method 'request-update-mark)
-	       (gnus-group-real-name group) article mark))))
-
-(defun gnus-request-article (article group &optional buffer)
-  "Request the ARTICLE in GROUP.
-ARTICLE can either be an article number or an article Message-ID.
-If BUFFER, insert the article in that group."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-article)
-	     article (gnus-group-real-name group)
-	     (nth 1 gnus-command-method) buffer)))
-
-(defun gnus-request-head (article group)
-  "Request the head of ARTICLE in GROUP."
-  (let* ((gnus-command-method (gnus-find-method-for-group group))
-	 (head (gnus-get-function gnus-command-method 'request-head t))
-	 res clean-up)
-    (cond
-     ;; Check the cache.
-     ((and gnus-use-cache
-	   (numberp article)
-	   (gnus-cache-request-article article group))
-      (setq res (cons group article)
-	    clean-up t))
-     ;; Use `head' function.
-     ((fboundp head)
-      (setq res (funcall head article (gnus-group-real-name group)
-			 (nth 1 gnus-command-method))))
-     ;; Use `article' function.
-     (t
-      (setq res (gnus-request-article article group)
-	    clean-up t)))
-    (when clean-up
-      (save-excursion
-	(set-buffer nntp-server-buffer)
-	(goto-char (point-min))
-	(when (search-forward "\n\n" nil t)
-	  (delete-region (1- (point)) (point-max)))
-	(nnheader-fold-continuation-lines)))
-    res))
-
-(defun gnus-request-body (article group)
-  "Request the body of ARTICLE in GROUP."
-  (let* ((gnus-command-method (gnus-find-method-for-group group))
-	 (head (gnus-get-function gnus-command-method 'request-body t))
-	 res clean-up)
-    (cond
-     ;; Check the cache.
-     ((and gnus-use-cache
-	   (numberp article)
-	   (gnus-cache-request-article article group))
-      (setq res (cons group article)
-	    clean-up t))
-     ;; Use `head' function.
-     ((fboundp head)
-      (setq res (funcall head article (gnus-group-real-name group)
-			 (nth 1 gnus-command-method))))
-     ;; Use `article' function.
-     (t
-      (setq res (gnus-request-article article group)
-	    clean-up t)))
-    (when clean-up
-      (save-excursion
-	(set-buffer nntp-server-buffer)
-	(goto-char (point-min))
-	(when (search-forward "\n\n" nil t)
-	  (delete-region (point-min) (1- (point))))))
-    res))
-
-(defun gnus-request-post (gnus-command-method)
-  "Post the current buffer using GNUS-COMMAND-METHOD."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (funcall (gnus-get-function gnus-command-method 'request-post)
-	   (nth 1 gnus-command-method)))
-
-(defun gnus-request-scan (group gnus-command-method)
-  "Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
-If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
-  (let ((gnus-command-method
-	 (if group (gnus-find-method-for-group group) gnus-command-method))
-	(gnus-inhibit-demon t)
-	(mail-source-plugged gnus-plugged))
-    (if (or gnus-plugged (not (gnus-agent-method-p gnus-command-method)))
-	(funcall (gnus-get-function gnus-command-method 'request-scan)
-		 (and group (gnus-group-real-name group))
-		 (nth 1 gnus-command-method)))))
-
-(defsubst gnus-request-update-info (info gnus-command-method)
-  "Request that GNUS-COMMAND-METHOD update INFO."
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (when (gnus-check-backend-function
-	 'request-update-info (car gnus-command-method))
-    (funcall (gnus-get-function gnus-command-method 'request-update-info)
-	     (gnus-group-real-name (gnus-info-group info))
-	     info (nth 1 gnus-command-method))))
-
-(defun gnus-request-expire-articles (articles group &optional force)
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-expire-articles)
-	     articles (gnus-group-real-name group) (nth 1 gnus-command-method)
-	     force)))
-
-(defun gnus-request-move-article
-  (article group server accept-function &optional last)
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-move-article)
-	     article (gnus-group-real-name group)
-	     (nth 1 gnus-command-method) accept-function last)))
-
-(defun gnus-request-accept-article (group &optional gnus-command-method last
-					  no-encode)
-  ;; Make sure there's a newline at the end of the article.
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (when (and (not gnus-command-method)
-	     (stringp group))
-    (setq gnus-command-method (gnus-group-name-to-method group)))
-  (goto-char (point-max))
-  (unless (bolp)
-    (insert "\n"))
-  (let ((func (car (or gnus-command-method
-		       (gnus-find-method-for-group group)))))
-    (funcall (intern (format "%s-request-accept-article" func))
-	     (if (stringp group) (gnus-group-real-name group) group)
-	     (cadr gnus-command-method)
-	     last)))
-
-(defun gnus-request-replace-article (article group buffer &optional no-encode)
-  (let ((func (car (gnus-group-name-to-method group))))
-    (funcall (intern (format "%s-request-replace-article" func))
-	     article (gnus-group-real-name group) buffer)))
-
-(defun gnus-request-associate-buffer (group)
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-associate-buffer)
-	     (gnus-group-real-name group))))
-
-(defun gnus-request-restore-buffer (article group)
-  "Request a new buffer restored to the state of ARTICLE."
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-restore-buffer)
-	     article (gnus-group-real-name group)
-	     (nth 1 gnus-command-method))))
-
-(defun gnus-request-create-group (group &optional gnus-command-method args)
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (let ((gnus-command-method
-	 (or gnus-command-method (gnus-find-method-for-group group))))
-    (funcall (gnus-get-function gnus-command-method 'request-create-group)
-	     (gnus-group-real-name group) (nth 1 gnus-command-method) args)))
-
-(defun gnus-request-delete-group (group &optional force)
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-delete-group)
-	     (gnus-group-real-name group) force (nth 1 gnus-command-method))))
-
-(defun gnus-request-rename-group (group new-name)
-  (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (funcall (gnus-get-function gnus-command-method 'request-rename-group)
-	     (gnus-group-real-name group)
-	     (gnus-group-real-name new-name) (nth 1 gnus-command-method))))
-
-(defun gnus-close-backends ()
-  ;; Send a close request to all backends that support such a request.
-  (let ((methods gnus-valid-select-methods)
-	(gnus-inhibit-demon t)
-	func gnus-command-method)
-    (while (setq gnus-command-method (pop methods))
-      (when (fboundp (setq func (intern
-				 (concat (car gnus-command-method)
-					 "-request-close"))))
-	(funcall func)))))
-
-(defun gnus-asynchronous-p (gnus-command-method)
-  (let ((func (gnus-get-function gnus-command-method 'asynchronous-p t)))
-    (when (fboundp func)
-      (funcall func))))
-
-(defun gnus-remove-denial (gnus-command-method)
-  (when (stringp gnus-command-method)
-    (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
-  (let* ((elem (assoc gnus-command-method gnus-opened-servers))
-	 (status (cadr elem)))
-    ;; If this hasn't been opened before, we add it to the list.
-    (when (eq status 'denied)
-      ;; Set the status of this server.
-      (setcar (cdr elem) 'closed))))
-
-(provide 'gnus-int)
-
-;;; gnus-int.el ends here