;;; nnspool.el --- spool access for GNU Emacs
-
-;; Copyright (C) 1988, 89, 90, 93, 94, 95 Free Software Foundation, Inc.
+;; Copyright (C) 1988,89,90,93,94,95 Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
-;; Lars Ingebrigtsen <larsi@ifi.uio.no>
+;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
;; Keywords: news
;; This file is part of GNU Emacs.
;;; Commentary:
-;; All the Gnus backends have the same interface, and should return
-;; data in a similar format. Below is and overview of what functions
-;; these packages must supply and what result they should return.
-;;
-;; Variables:
-;;
-;; `nntp-server-buffer' - All data should be returned to Gnus in this
-;; buffer.
-;;
-;; Functions for the imaginary backend `choke':
-;;
-;; `choke-retrieve-headers ARTICLES &optional GROUP SERVER'
-;; Should return all headers for all ARTICLES, or return NOV lines for
-;; the same.
-;;
-;; `choke-request-group GROUP &optional SERVER DISCARD'
-;; Switch to GROUP. If DISCARD is nil, active information on the group
-;; must be returned.
-;;
-;; `choke-close-group GROUP &optional SERVER'
-;; Close group. Most backends won't have to do anything with this
-;; call, but it is an opportunity to clean up, if that is needed. It
-;; is called when Gnus exits a group.
-;;
-;; `choke-request-article ARTICLE &optional GROUP SERVER'
-;; Return ARTICLE, which is either an article number or id.
-;;
-;; `choke-request-list SERVER'
-;; Return a list of all active newsgroups on SERVER.
-;;
-;; `choke-request-list-newsgroups SERVER'
-;; Return a list of descriptions of all newsgroups on SERVER.
-;;
-;; `choke-request-post-buffer METHOD HEADER ARTICLE-BUFFER GROUP INFO'
-;; Should return a buffer that is suitable for "posting". nnspool and
-;; nntp return a `*post-buffer*', and nnmail return a `*mail*'
-;; buffer. This function should fill out the appropriate header
-;; fields.
-;;
-;; `choke-request-post &optional SERVER'
-;; Function that will be called from a buffer to be posted.
-;;
-;; `choke-open-server SERVER &optional ARGUMENT'
-;; Open a connection to SERVER.
-;;
-;; `choke-close-server &optional SERVER'
-;; Close the connection to server.
-;;
-;; `choke-server-opened &optional SERVER'
-;; Whether the server is opened or not.
-;;
-;; `choke-server-status &optional SERVER'
-;; Should return a status string (not in nntp buffer, but as the
-;; result of the function).
-;;
-;; `choke-request-expire-articles ARTICLES &optional NEWSGROUP SERVER'
-;; Should expire (according to some aging scheme) all ARTICLES. Most
-;; backends will not be able to expire articles. Should return a list
-;; of all articles that were not expired.
-;;
-;; All these functions must return nil if they couldn't service the
-;; request. If the optional arguments are not supplied, some "current"
-;; or "default" values should be used. In short, one should emulate an
-;; NNTP server, in a way. All results should be returned in the NNTP
-;; format. (See RFC977).
-
;;; Code:
(require 'nnheader)
(require 'nntp)
+(require 'timezone)
(defvar nnspool-inews-program news-inews-program
"Program to post news.")
(defvar nnspool-spool-directory news-path
"Local news spool directory.")
+(defvar nnspool-nov-directory (concat nnspool-spool-directory "over.view/")
+ "Local news nov directory.")
+
(defvar nnspool-lib-dir "/usr/lib/news/"
"Where the local news library files are stored.")
(defvar nnspool-current-directory nil
"Current news group directory.")
+(defvar nnspool-current-group nil)
(defvar nnspool-status-string "")
\f
+(defvar nnspool-current-server nil)
+(defvar nnspool-server-alist nil)
+(defvar nnspool-server-variables
+ (list
+ (list 'nnspool-inews-program nnspool-inews-program)
+ (list 'nnspool-inews-switches nnspool-inews-switches)
+ (list 'nnspool-spool-directory nnspool-spool-directory)
+ (list 'nnspool-nov-directory nnspool-nov-directory)
+ (list 'nnspool-lib-dir nnspool-lib-dir)
+ (list 'nnspool-active-file nnspool-active-file)
+ (list 'nnspool-newsgroups-file nnspool-newsgroups-file)
+ (list 'nnspool-distributions-file nnspool-distributions-file)
+ (list 'nnspool-history-file nnspool-history-file)
+ (list 'nnspool-active-times-file nnspool-active-times-file)
+ (list 'nnspool-large-newsgroup nnspool-large-newsgroup)
+ (list 'nnspool-nov-is-evil nnspool-nov-is-evil)
+ '(nnspool-current-directory nil)
+ '(nnspool-current-group nil)
+ '(nnspool-status-string "")))
+
+\f
;;; Interface functions.
(defun nnspool-retrieve-headers (sequence &optional newsgroup server)
(do-message (and (numberp nnspool-large-newsgroup)
(> number nnspool-large-newsgroup)))
file beg article)
- (nnspool-possibly-change-directory newsgroup)
- (if (nnspool-retrieve-headers-with-nov sequence)
- 'nov
- (while sequence
- (setq article (car sequence))
- (setq file (concat nnspool-current-directory
- (int-to-string article)))
- (and (file-exists-p file)
- (progn
- (insert (format "221 %d Article retrieved.\n" article))
- (setq beg (point))
- (insert-file-contents file)
- (goto-char beg)
- (search-forward "\n\n" nil t)
- (forward-char -1)
- (insert ".\n")
- (delete-region (point) (point-max))))
- (setq sequence (cdr sequence))
-
- (and do-message
- (zerop (% (setq count (1+ count)) 20))
- (message "NNSPOOL: Receiving headers... %d%%"
- (/ (* count 100) number))))
-
- (and do-message (message "NNSPOOL: Receiving headers... done"))
-
- ;; Fold continuation lines.
- (goto-char 1)
- (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
- (replace-match " " t t))
- 'headers))))
-
-(defun nnspool-open-server (host &optional service)
- "Open local spool."
- (setq nnspool-status-string "")
- (cond ((and (file-directory-p nnspool-spool-directory)
- (file-exists-p nnspool-active-file))
- (nnspool-open-server-internal host service))
- (t
- (setq nnspool-status-string
- (format "NNSPOOL: cannot talk to %s." host))
- nil)))
+ (if (not (nnspool-possibly-change-directory newsgroup))
+ ()
+ (if (nnspool-retrieve-headers-with-nov sequence)
+ 'nov
+ (while sequence
+ (setq article (car sequence))
+ (setq file (concat nnspool-current-directory
+ (int-to-string article)))
+ (and (file-exists-p file)
+ (progn
+ (insert (format "221 %d Article retrieved.\n" article))
+ (setq beg (point))
+ (insert-file-contents file)
+ (goto-char beg)
+ (search-forward "\n\n" nil t)
+ (forward-char -1)
+ (insert ".\n")
+ (delete-region (point) (point-max))))
+ (setq sequence (cdr sequence))
+
+ (and do-message
+ (zerop (% (setq count (1+ count)) 20))
+ (message "NNSPOOL: Receiving headers... %d%%"
+ (/ (* count 100) number))))
+
+ (and do-message (message "NNSPOOL: Receiving headers... done"))
+
+ ;; Fold continuation lines.
+ (goto-char 1)
+ (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
+ (replace-match " " t t))
+ 'headers)))))
+
+(defun nnspool-open-server (server &optional defs)
+ (nnheader-init-server-buffer)
+ (if (equal server nnspool-current-server)
+ t
+ (if nnspool-current-server
+ (setq nnspool-server-alist
+ (cons (list nnspool-current-server
+ (nnheader-save-variables nnspool-server-variables))
+ nnspool-server-alist)))
+ (let ((state (assoc server nnspool-server-alist)))
+ (if state
+ (progn
+ (nnheader-restore-variables (nth 1 state))
+ (setq nnspool-server-alist (delq state nnspool-server-alist)))
+ (nnheader-set-init-variables nnspool-server-variables defs)))
+ (setq nnspool-current-server server)))
(defun nnspool-close-server (&optional server)
- "Close news server."
- (nnspool-close-server-internal))
-
-(fset 'nnspool-request-quit (symbol-function 'nnspool-close-server))
+ t)
(defun nnspool-server-opened (&optional server)
- "Return server process status, T or NIL.
-If the stream is opened, return T, otherwise return NIL."
- (and nntp-server-buffer
- (get-buffer nntp-server-buffer)))
+ (and (equal server nnspool-current-server)
+ nntp-server-buffer
+ (buffer-name nntp-server-buffer)))
-(defun nnspool-status-message ()
+(defun nnspool-status-message (&optional server)
"Return server status response as string."
nnspool-status-string)
(let ((pathname (nnspool-article-pathname
(nnspool-replace-chars-in-string group ?. ?/)))
dir)
- (if (file-directory-p pathname)
+ (if (not (file-directory-p pathname))
(progn
- (setq nnspool-current-directory pathname)
- (if (not dont-check)
- (progn
- (setq dir (directory-files pathname nil "^[0-9]+$" t))
- ;; yes, completely empty spool directories *are* possible
- ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
- (and dir
- (setq dir
- (sort
- (mapcar
- (function
- (lambda (name)
- (string-to-int name)))
- dir)
- '<)))
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (if dir
- (insert
- (format "211 %d %d %d %s\n" (length dir) (car dir)
- (progn (while (cdr dir) (setq dir (cdr dir)))
- (car dir))
- group))
- (insert (format "211 0 0 0 %s\n" group))))))
- t))))
+ (setq nnspool-status-string
+ "Invalid group name (no such directory)")
+ nil)
+ (setq nnspool-current-directory pathname)
+ (setq nnspool-status-string "")
+ (if (not dont-check)
+ (progn
+ (setq dir (directory-files pathname nil "^[0-9]+$" t))
+ ;; yes, completely empty spool directories *are* possible
+ ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
+ (and dir
+ (setq dir
+ (sort
+ (mapcar
+ (function
+ (lambda (name)
+ (string-to-int name)))
+ dir)
+ '<)))
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (if dir
+ (insert
+ (format "211 %d %d %d %s\n" (length dir) (car dir)
+ (progn (while (cdr dir) (setq dir (cdr dir)))
+ (car dir))
+ group))
+ (insert (format "211 0 0 0 %s\n" group))))))
+ t)))
(defun nnspool-close-group (group &optional server)
t)
(save-excursion
(nnspool-find-file nnspool-distributions-file)))
+;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
(defun nnspool-request-newgroups (date &optional server)
"List groups created after DATE."
- (save-excursion
- (nnspool-find-file nnspool-active-times-file)
- (setq nnspool-status-string "NEWGROUPS is not supported.")
+ (if (nnspool-find-file nnspool-active-times-file)
+ (save-excursion
+ ;; Find the last valid line.
+ (goto-char (point-max))
+ (while (and (not (looking-at
+ "\\([^ ]+\\) +\\([0-9]+\\)[0-9][0-9][0-9] "))
+ (zerop (forward-line -1))))
+ (let ((seconds (nnspool-seconds-since-epoch))
+ groups)
+ ;; Go through lines and add the latest groups to a list.
+ (while (and (looking-at "\\([^ ]+\\) +[0-9]+ ")
+ (progn
+ ;; We insert a .0 to make the list reader
+ ;; interpret the number as a float. It is far
+ ;; too big to be stored in a lisp integer.
+ (goto-char (1- (match-end 0)))
+ (insert ".0")
+ (> (progn
+ (goto-char (match-end 1))
+ (read (current-buffer)))
+ seconds))
+ (setq groups (cons (buffer-substring
+ (match-beginning 1) (match-end 1))
+ groups))
+ (zerop (forward-line -1))))
+ (erase-buffer)
+ (while groups
+ (insert (car groups) " 0 0 y\n")
+ (setq groups (cdr groups))))
+ t)
nil))
(defun nnspool-request-post (&optional server)
(defun nnspool-retrieve-headers-with-nov (articles)
(if (or gnus-nov-is-evil nnspool-nov-is-evil)
nil
- (let ((nov (concat nnspool-current-directory ".nov"))
+ (let ((nov (concat nnspool-nov-directory
+ (nnspool-replace-chars-in-string
+ nnspool-current-group ?. ?/)
+ "/.overview"))
article)
(if (file-exists-p nov)
(save-excursion
;; we find one of the articles we want.
(while (and articles
(setq article (concat (int-to-string
- (car articles) "\t")))
+ (car articles)) "\t"))
(not (or (looking-at article)
(search-forward (concat "\n" article)
nil t))))
(delete-region (point) (point-max)))))
(or articles (progn (erase-buffer) nil)))))))
-(defun nnspool-open-server-internal (host &optional service)
- (save-excursion
- ;; Initialize communication buffer.
- (setq nntp-server-buffer (get-buffer-create " *nntpd*"))
- (set-buffer nntp-server-buffer)
- (buffer-disable-undo (current-buffer))
- (erase-buffer)
- (kill-all-local-variables)
- (setq case-fold-search t) ;Should ignore case.
- t))
-
-(defun nnspool-close-server-internal ()
- "Close connection to news server."
- )
-
(defun nnspool-find-article-by-message-id (id)
"Return full pathname of an article identified by message-ID."
(save-excursion
(let ((pathname (nnspool-article-pathname
(nnspool-replace-chars-in-string newsgroup ?. ?/))))
(if (file-directory-p pathname)
- (setq nnspool-current-directory pathname)
- (error "No such newsgroup: %s" newsgroup)))))
+ (progn
+ (setq nnspool-current-directory pathname)
+ (setq nnspool-current-group newsgroup))
+ (setq nnspool-status-string
+ (format "No such newsgroup: %s" newsgroup))
+ nil))
+ t))
(defun nnspool-article-pathname (group)
"Make pathname for GROUP."
(setq idx (1+ idx)))
string))
+(defun nnspool-number-base-10 (num pos)
+ (if (<= pos 0) ""
+ (setcdr num (+ (* (% (car num) 10) 65536) (cdr num)))
+ (apply
+ 'concat
+ (reverse
+ (list
+ (char-to-string
+ (aref "0123456789" (% (cdr num) 10)))
+ (progn
+ (setcdr num (/ (cdr num) 10))
+ (setcar num (/ (car num) 10))
+ (nnspool-number-base-10 num (1- pos))))))))
+
+(defun nnspool-seconds-since-epoch ()
+ (let ((time (current-time)))
+ (+ (* 1.0 (car time) 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2)
+ (nth 1 time))))
+
(provide 'nnspool)
;;; nnspool.el ends here
projects / gnus / blobdiff