Revision: miles@gnu.org--gnu-2004/emacs--cvs-trunk--0--patch-523after-merge-gnus-5_10

Merge from emacs--gnus--5.10, gnus--rel--5.10

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diff --git a/lisp/gnus/sieve.el b/lisp/gnus/sieve.el
new file mode 100644
index 00000000000..f4645168dec
--- /dev/null
+++ b/lisp/gnus/sieve.el
@@ -0,0 +1,384 @@
+;;; sieve.el --- Utilities to manage sieve scripts
+;; Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+
+;; Author: Simon Josefsson <simon@josefsson.org>
+
+;; 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:
+
+;; This file contain utilities to facilate upload, download and
+;; general management of sieve scripts.  Currently only the
+;; Managesieve protocol is supported (using sieve-manage.el), but when
+;; (useful) alternatives become available, they might be supported as
+;; well.
+;;
+;; The cursor navigation was inspired by biff-mode by Franklin Lee.
+;;
+;; Release history:
+;;
+;; 2001-10-31 Committed to Oort Gnus.
+;; 2002-07-27 Fix down-mouse-2 and down-mouse-3 in manage-mode.  Fix menubar
+;;            in manage-mode.  Change some messages.  Added sieve-deactivate*,
+;;            sieve-remove.  Fixed help text in manage-mode.  Suggested by
+;;            Ned Ludd.
+;;
+;; Todo:
+;;
+;; * Namespace?  This file contains `sieve-manage' and
+;;   `sieve-manage-mode', but there is a sieve-manage.el file as well.
+;;   Can't think of a good solution though, this file need a *-mode,
+;;   and naming it `sieve-mode' would collide with sieve-mode.el.  One
+;;   solution would be to come up with some better name that this file
+;;   can use that doesn't have the managesieve specific "manage" in
+;;   it.  sieve-dired?  i dunno.  we could copy all off sieve.el into
+;;   sieve-manage.el too, but I'd like to separate the interface from
+;;   the protocol implementation since the backends are likely to
+;;   change (well).
+;;
+;; * Define servers?  We could have a customize buffer to create a server,
+;;   with authentication/stream/etc parameters, much like Gnus, and then
+;;   only use names of defined servers when interacting with M-x sieve-*.
+;;   Right now you can't use STARTTLS, which sieve-manage.el provides
+
+;;; Code:
+
+(require 'sieve-manage)
+(require 'sieve-mode)
+
+;; User customizable variables:
+
+(defgroup sieve nil
+  "Manage sieve scripts."
+  :group 'tools)
+
+(defcustom sieve-new-script "<new script>"
+  "Name of name script indicator."
+  :type 'string
+  :group 'sieve)
+
+(defcustom sieve-buffer "*sieve*"
+  "Name of sieve management buffer."
+  :type 'string
+  :group 'sieve)
+
+(defcustom sieve-template "\
+require \"fileinto\";
+
+# Example script (remove comment character '#' to make it effective!):
+#
+# if header :contains \"from\" \"coyote\" {
+#   discard;
+# } elsif header :contains [\"subject\"] [\"$$$\"] {
+#   discard;
+# } else {
+#  fileinto \"INBOX\";
+# }
+"
+  "Template sieve script."
+  :type 'string
+  :group 'sieve)
+
+;; Internal variables:
+
+(defvar sieve-manage-buffer nil)
+(defvar sieve-buffer-header-end nil)
+
+;; Sieve-manage mode:
+
+(defvar sieve-manage-mode-map nil
+  "Keymap for `sieve-manage-mode'.")
+
+(if sieve-manage-mode-map
+    ()
+  (setq sieve-manage-mode-map (make-sparse-keymap))
+  (suppress-keymap sieve-manage-mode-map)
+  ;; various
+  (define-key sieve-manage-mode-map "?" 'sieve-help)
+  (define-key sieve-manage-mode-map "h" 'sieve-help)
+  (define-key sieve-manage-mode-map "q" 'sieve-bury-buffer)
+  ;; activating
+  (define-key sieve-manage-mode-map "m" 'sieve-activate)
+  (define-key sieve-manage-mode-map "u" 'sieve-deactivate)
+  (define-key sieve-manage-mode-map "\M-\C-?" 'sieve-deactivate-all)
+  ;; navigation keys
+  (define-key sieve-manage-mode-map "\C-p" 'sieve-prev-line)
+  (define-key sieve-manage-mode-map [up] 'sieve-prev-line)
+  (define-key sieve-manage-mode-map "\C-n" 'sieve-next-line)
+  (define-key sieve-manage-mode-map [down] 'sieve-next-line)
+  (define-key sieve-manage-mode-map " " 'sieve-next-line)
+  (define-key sieve-manage-mode-map "n" 'sieve-next-line)
+  (define-key sieve-manage-mode-map "p" 'sieve-prev-line)
+  (define-key sieve-manage-mode-map "\C-m" 'sieve-edit-script)
+  (define-key sieve-manage-mode-map "f" 'sieve-edit-script)
+  (define-key sieve-manage-mode-map "o" 'sieve-edit-script-other-window)
+  (define-key sieve-manage-mode-map "r" 'sieve-remove)
+  (define-key sieve-manage-mode-map [(down-mouse-2)] 'sieve-edit-script)
+  (define-key sieve-manage-mode-map [(down-mouse-3)] 'sieve-manage-mode-menu))
+
+(easy-menu-define sieve-manage-mode-menu sieve-manage-mode-map
+  "Sieve Menu."
+  '("Manage Sieve"
+    ["Edit script" sieve-edit-script t]
+    ["Activate script" sieve-activate t]
+    ["Deactivate script" sieve-deactivate t]))
+
+(define-derived-mode sieve-manage-mode fundamental-mode "SIEVE"
+  "Mode used for sieve script management."
+  (setq mode-name "SIEVE")
+  (buffer-disable-undo (current-buffer))
+  (setq truncate-lines t)
+  (easy-menu-add-item nil nil sieve-manage-mode-menu))
+
+(put 'sieve-manage-mode 'mode-class 'special)
+
+;; This is necessary to allow correct handling of \\[cvs-mode-diff-map]
+;; in substitute-command-keys.
+;(fset 'sieve-manage-mode-map sieve-manage-mode-map)
+
+;; Commands used in sieve-manage mode:
+
+(defun sieve-activate (&optional pos)
+  (interactive "d")
+  (let ((name (sieve-script-at-point)) err)
+    (when (or (null name) (string-equal name sieve-new-script))
+      (error "No sieve script at point"))
+    (message "Activating script %s..." name)
+    (setq err (sieve-manage-setactive name sieve-manage-buffer))
+    (sieve-refresh-scriptlist)
+    (if (sieve-manage-ok-p err)
+	(message "Activating script %s...done" name)
+      (message "Activating script %s...failed: %s" name (nth 2 err)))))
+
+(defun sieve-deactivate-all (&optional pos)
+  (interactive "d")
+  (let ((name (sieve-script-at-point)) err)
+    (message "Deactivating scripts...")
+    (setq err (sieve-manage-setactive "" sieve-manage-buffer))
+    (sieve-refresh-scriptlist)
+    (if (sieve-manage-ok-p err)
+	(message "Deactivating scripts...done")
+      (message "Deactivating scripts...failed: %s" (nth 2 err)))))
+
+(defalias 'sieve-deactivate 'sieve-deactivate-all)
+
+(defun sieve-remove (&optional pos)
+  (interactive "d")
+  (let ((name (sieve-script-at-point)) err)
+    (when (or (null name) (string-equal name sieve-new-script))
+      (error "No sieve script at point"))
+    (message "Removing sieve script %s..." name)
+    (setq err (sieve-manage-deletescript name sieve-manage-buffer))
+    (unless (sieve-manage-ok-p err)
+      (error "Removing sieve script %s...failed: " err))
+    (sieve-refresh-scriptlist)
+    (message "Removing sieve script %s...done" name)))
+
+(defun sieve-edit-script (&optional pos)
+  (interactive "d")
+  (let ((name (sieve-script-at-point)))
+    (unless name
+      (error "No sieve script at point"))
+    (if (not (string-equal name sieve-new-script))
+	(let ((newbuf (generate-new-buffer name))
+	      err)
+	  (setq err (sieve-manage-getscript name newbuf sieve-manage-buffer))
+	  (switch-to-buffer newbuf)
+	  (unless (sieve-manage-ok-p err)
+	    (error "Sieve download failed: %s" err)))
+      (switch-to-buffer (get-buffer-create "template.siv"))
+      (insert sieve-template))
+    (sieve-mode)
+    (message "Press C-c C-l to upload script to server.")))
+
+(defmacro sieve-change-region (&rest body)
+  "Turns off sieve-region before executing BODY, then re-enables it after.
+Used to bracket operations which move point in the sieve-buffer."
+  `(progn
+     (sieve-highlight nil)
+     ,@body
+     (sieve-highlight t)))
+(put 'sieve-change-region 'lisp-indent-function 0)
+
+(defun sieve-next-line (&optional arg)
+  (interactive)
+  (unless arg
+    (setq arg 1))
+  (if (save-excursion
+	(forward-line arg)
+	(sieve-script-at-point))
+      (sieve-change-region
+	(forward-line arg))
+    (message "End of list")))
+
+(defun sieve-prev-line (&optional arg)
+  (interactive)
+  (unless arg
+    (setq arg -1))
+  (if (save-excursion
+	(forward-line arg)
+	(sieve-script-at-point))
+      (sieve-change-region
+	(forward-line arg))
+    (message "Beginning of list")))
+
+(defun sieve-help ()
+  "Display help for various sieve commands."
+  (interactive)
+  (if (eq last-command 'sieve-help)
+      ;; would need minor-mode for log-edit-mode
+      (describe-function 'sieve-mode)
+    (message (substitute-command-keys
+	      "`\\[sieve-edit-script]':edit `\\[sieve-activate]':activate `\\[sieve-deactivate]':deactivate `\\[sieve-remove]':remove"))))
+
+(defun sieve-bury-buffer (buf &optional mainbuf)
+  "Hide the buffer BUF that was temporarily popped up.
+BUF is assumed to be a temporary buffer used from the buffer MAINBUF."
+  (interactive (list (current-buffer)))
+  (save-current-buffer
+    (let ((win (if (eq buf (window-buffer (selected-window))) (selected-window)
+		 (get-buffer-window buf t))))
+      (when win
+	(if (window-dedicated-p win)
+	    (condition-case ()
+		(delete-window win)
+	      (error (iconify-frame (window-frame win))))
+	  (if (and mainbuf (get-buffer-window mainbuf))
+	      (delete-window win)))))
+    (with-current-buffer buf
+      (bury-buffer (unless (and (eq buf (window-buffer (selected-window)))
+				(not (window-dedicated-p (selected-window))))
+		     buf)))
+    (when mainbuf
+      (let ((mainwin (or (get-buffer-window mainbuf)
+			 (get-buffer-window mainbuf 'visible))))
+	(when mainwin (select-window mainwin))))))
+
+;; Create buffer:
+
+(defun sieve-setup-buffer (server port)
+  (setq buffer-read-only nil)
+  (erase-buffer)
+  (buffer-disable-undo)
+  (insert "\
+Server  : " server ":" (or port "2000") "
+
+")
+  (set (make-local-variable 'sieve-buffer-header-end)
+       (point-max)))
+
+(defun sieve-script-at-point (&optional pos)
+  "Return name of sieve script at point POS, or nil."
+  (interactive "d")
+  (get-char-property (or pos (point)) 'script-name))
+
+(eval-and-compile
+  (defalias 'sieve-make-overlay (if (fboundp 'make-overlay)
+				    'make-overlay
+				  'make-extent))
+  (defalias 'sieve-overlay-put (if (fboundp 'overlay-put)
+				   'overlay-put
+				 'set-extent-property))
+  (defalias 'sieve-overlays-at (if (fboundp 'overlays-at)
+				   'overlays-at
+				 'extents-at)))
+
+(defun sieve-highlight (on)
+  "Turn ON or off highlighting on the current language overlay."
+  (sieve-overlay-put (car (sieve-overlays-at (point)))
+		     'face (if on 'highlight 'default)))
+
+(defun sieve-insert-scripts (scripts)
+  "Format and insert LANGUAGE-LIST strings into current buffer at point."
+  (while scripts
+    (let ((p (point))
+	  (ext nil)
+	  (script (pop scripts)))
+      (if (consp script)
+	  (insert (format " ACTIVE %s" (cdr script)))
+	(insert (format "        %s" script)))
+      (setq ext (sieve-make-overlay p (point)))
+      (sieve-overlay-put ext 'mouse-face 'highlight)
+      (sieve-overlay-put ext 'script-name (if (consp script)
+					      (cdr script)
+					    script))
+      (insert "\n"))))
+
+(defun sieve-open-server (server &optional port)
+  ;; open server
+  (set (make-local-variable 'sieve-manage-buffer)
+       (sieve-manage-open server))
+  ;; authenticate
+  (sieve-manage-authenticate nil nil sieve-manage-buffer))
+
+(defun sieve-refresh-scriptlist ()
+  (interactive)
+  (with-current-buffer sieve-buffer
+    (setq buffer-read-only nil)
+    (delete-region (or sieve-buffer-header-end (point-max)) (point-max))
+    (goto-char (point-max))
+    ;; get list of script names and print them
+    (let ((scripts (sieve-manage-listscripts sieve-manage-buffer)))
+      (if (null scripts)
+	  (insert (format (concat "No scripts on server, press RET on %s to "
+				  "create a new script.\n") sieve-new-script))
+	(insert (format (concat "%d script%s on server, press RET on a script "
+				"name edits it, or\npress RET on %s to create "
+				"a new script.\n") (length scripts)
+				(if (eq (length scripts) 1) "" "s")
+				sieve-new-script)))
+      (save-excursion
+	(sieve-insert-scripts (list sieve-new-script))
+	(sieve-insert-scripts scripts)))
+    (sieve-highlight t)
+    (setq buffer-read-only t)))
+
+;;;###autoload
+(defun sieve-manage (server &optional port)
+  (interactive "sServer: ")
+  (switch-to-buffer (get-buffer-create sieve-buffer))
+  (sieve-manage-mode)
+  (sieve-setup-buffer server port)
+  (if (sieve-open-server server port)
+      (sieve-refresh-scriptlist)
+    (message "Could not open server %s" server)))
+
+;;;###autoload
+(defun sieve-upload (&optional name)
+  (interactive)
+  (unless name
+    (setq name (buffer-name)))
+  (when (or (get-buffer sieve-buffer) (call-interactively 'sieve-manage))
+    (let ((script (buffer-string)) err)
+      (with-current-buffer (get-buffer sieve-buffer)
+	(setq err (sieve-manage-putscript name script sieve-manage-buffer))
+	(if (sieve-manage-ok-p err)
+	    (message (concat
+		      "Sieve upload done.  Use `C-c RET' to manage scripts."))
+	  (message "Sieve upload failed: %s" (nth 2 err)))))))
+
+;;;###autoload
+(defun sieve-upload-and-bury (&optional name)
+  (interactive)
+  (sieve-upload name)
+  (bury-buffer))
+
+(provide 'sieve)
+
+;;; arch-tag: 7f6a6d94-94e1-4654-ab9a-aee21b9b8a94
+;; sieve.el ends here