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- ;;; nnspool.el --- spool access for GNU Emacs
- ;; Copyright (C) 1988,89,90,93,94,95,96,97 Free Software Foundation, Inc.
-
- ;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
- ;; Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
- ;; 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:
-
- (require 'nnheader)
- (require 'nntp)
- (require 'timezone)
- (require 'nnoo)
- (eval-when-compile (require 'cl))
-
- (nnoo-declare nnspool)
-
- (defvoo nnspool-inews-program news-inews-program
- "Program to post news.
- This is most commonly `inews' or `injnews'.")
-
- (defvoo nnspool-inews-switches '("-h" "-S")
- "Switches for nnspool-request-post to pass to `inews' for posting news.
- If you are using Cnews, you probably should set this variable to nil.")
-
- (defvoo nnspool-spool-directory (file-name-as-directory news-path)
- "Local news spool directory.")
-
- (defvoo nnspool-nov-directory (concat nnspool-spool-directory "over.view/")
- "Local news nov directory.")
-
- (defvoo nnspool-lib-dir "/usr/lib/news/"
- "Where the local news library files are stored.")
-
- (defvoo nnspool-active-file (concat nnspool-lib-dir "active")
- "Local news active file.")
-
- (defvoo nnspool-newsgroups-file (concat nnspool-lib-dir "newsgroups")
- "Local news newsgroups file.")
-
- (defvoo nnspool-distributions-file (concat nnspool-lib-dir "distribs.pat")
- "Local news distributions file.")
-
- (defvoo nnspool-history-file (concat nnspool-lib-dir "history")
- "Local news history file.")
-
- (defvoo nnspool-active-times-file (concat nnspool-lib-dir "active.times")
- "Local news active date file.")
-
- (defvoo nnspool-large-newsgroup 50
- "The number of the articles which indicates a large newsgroup.
- If the number of the articles is greater than the value, verbose
- messages will be shown to indicate the current status.")
-
- (defvoo nnspool-nov-is-evil nil
- "Non-nil means that nnspool will never return NOV lines instead of headers.")
-
- (defconst nnspool-sift-nov-with-sed nil
- "If non-nil, use sed to get the relevant portion from the overview file.
- If nil, nnspool will load the entire file into a buffer and process it
- there.")
-
- (defvoo nnspool-rejected-article-hook nil
- "*A hook that will be run when an article has been rejected by the server.")
-
- ;; 1997/8/14 by MORIOKA Tomohiko
- (defvoo nnspool-file-coding-system nnheader-file-coding-system
- "Coding system for nnspool.")
-
-
-
- (defconst nnspool-version "nnspool 2.0"
- "Version numbers of this version of NNSPOOL.")
-
- (defvoo nnspool-current-directory nil
- "Current news group directory.")
-
- (defvoo nnspool-current-group nil)
- (defvoo nnspool-status-string "")
-
-
- ;;; Interface functions.
-
- (nnoo-define-basics nnspool)
-
- (deffoo nnspool-retrieve-headers (articles &optional group server fetch-old)
- "Retrieve the headers of ARTICLES."
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (when (nnspool-possibly-change-directory group)
- (let* ((number (length articles))
- (count 0)
- (default-directory nnspool-current-directory)
- (do-message (and (numberp nnspool-large-newsgroup)
- (> number nnspool-large-newsgroup)))
- ;; 1997/8/14 by MORIOKA Tomohiko
- ;; for Win32
- (nnheader-file-coding-system nnspool-file-coding-system)
- file beg article ag)
- (if (and (numberp (car articles))
- (nnspool-retrieve-headers-with-nov articles fetch-old))
- ;; We successfully retrieved the NOV headers.
- 'nov
- ;; No NOV headers here, so we do it the hard way.
- (while (setq article (pop articles))
- (if (stringp article)
- ;; This is a Message-ID.
- (setq ag (nnspool-find-id article)
- file (and ag (nnspool-article-pathname
- (car ag) (cdr ag)))
- article (cdr ag))
- ;; This is an article in the current group.
- (setq file (int-to-string article)))
- ;; Insert the head of the article.
- (when (and file
- (file-exists-p file))
- (insert "221 ")
- (princ article (current-buffer))
- (insert " Article retrieved.\n")
- (setq beg (point))
- (inline (nnheader-insert-head file))
- (goto-char beg)
- (search-forward "\n\n" nil t)
- (forward-char -1)
- (insert ".\n")
- (delete-region (point) (point-max)))
-
- (and do-message
- (zerop (% (incf count) 20))
- (message "nnspool: Receiving headers... %d%%"
- (/ (* count 100) number))))
-
- (when do-message
- (message "nnspool: Receiving headers...done"))
-
- ;; Fold continuation lines.
- (nnheader-fold-continuation-lines)
- 'headers)))))
-
- (deffoo nnspool-open-server (server &optional defs)
- (nnoo-change-server 'nnspool server defs)
- (cond
- ((not (file-exists-p nnspool-spool-directory))
- (nnspool-close-server)
- (nnheader-report 'nnspool "Spool directory doesn't exist: %s"
- nnspool-spool-directory))
- ((not (file-directory-p
- (directory-file-name
- (file-truename nnspool-spool-directory))))
- (nnspool-close-server)
- (nnheader-report 'nnspool "Not a directory: %s" nnspool-spool-directory))
- ((not (file-exists-p nnspool-active-file))
- (nnheader-report 'nnspool "The active file doesn't exist: %s"
- nnspool-active-file))
- (t
- (nnheader-report 'nnspool "Opened server %s using directory %s"
- server nnspool-spool-directory)
- t)))
-
- (deffoo nnspool-request-article (id &optional group server buffer)
- "Select article by message ID (or number)."
- (nnspool-possibly-change-directory group)
- (let ((nntp-server-buffer (or buffer nntp-server-buffer))
- file ag)
- (if (stringp id)
- ;; This is a Message-ID.
- (when (setq ag (nnspool-find-id id))
- (setq file (nnspool-article-pathname (car ag) (cdr ag))))
- (setq file (nnspool-article-pathname nnspool-current-group id)))
- (and file
- (file-exists-p file)
- (not (file-directory-p file))
- (save-excursion (nnspool-find-file file))
- ;; We return the article number and group name.
- (if (numberp id)
- (cons nnspool-current-group id)
- ag))))
-
- (deffoo nnspool-request-body (id &optional group server)
- "Select article body by message ID (or number)."
- (nnspool-possibly-change-directory group)
- (let ((res (nnspool-request-article id)))
- (when res
- (save-excursion
- (set-buffer nntp-server-buffer)
- (goto-char (point-min))
- (when (search-forward "\n\n" nil t)
- (delete-region (point-min) (point)))
- res))))
-
- (deffoo nnspool-request-head (id &optional group server)
- "Select article head by message ID (or number)."
- (nnspool-possibly-change-directory group)
- (let ((res (nnspool-request-article id)))
- (when res
- (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))
-
- (deffoo nnspool-request-group (group &optional server dont-check)
- "Select news GROUP."
- (let ((pathname (nnspool-article-pathname group))
- dir)
- (if (not (file-directory-p pathname))
- (nnheader-report
- 'nnspool "Invalid group name (no such directory): %s" group)
- (setq nnspool-current-directory pathname)
- (nnheader-report 'nnspool "Selected group %s" group)
- (if dont-check
- (progn
- (nnheader-report 'nnspool "Selected group %s" group)
- t)
- ;; Yes, completely empty spool directories *are* possible.
- ;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
- (when (setq dir (directory-files pathname nil "^[0-9]+$" t))
- (setq dir
- (sort (mapcar (lambda (name) (string-to-int name)) dir) '<)))
- (if dir
- (nnheader-insert
- "211 %d %d %d %s\n" (length dir) (car dir)
- (progn (while (cdr dir) (setq dir (cdr dir))) (car dir))
- group)
- (nnheader-report 'nnspool "Empty group %s" group)
- (nnheader-insert "211 0 0 0 %s\n" group))))))
-
- (deffoo nnspool-request-type (group &optional article)
- 'news)
-
- (deffoo nnspool-close-group (group &optional server)
- t)
-
- (deffoo nnspool-request-list (&optional server)
- "List active newsgroups."
- (save-excursion
- (or (nnspool-find-file nnspool-active-file)
- (nnheader-report 'nnspool (nnheader-file-error nnspool-active-file)))))
-
- (deffoo nnspool-request-list-newsgroups (&optional server)
- "List newsgroups (defined in NNTP2)."
- (save-excursion
- (or (nnspool-find-file nnspool-newsgroups-file)
- (nnheader-report 'nnspool (nnheader-file-error
- nnspool-newsgroups-file)))))
-
- (deffoo nnspool-request-list-distributions (&optional server)
- "List distributions (defined in NNTP2)."
- (save-excursion
- (or (nnspool-find-file nnspool-distributions-file)
- (nnheader-report 'nnspool (nnheader-file-error
- nnspool-distributions-file)))))
-
- ;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
- (deffoo nnspool-request-newgroups (date &optional server)
- "List groups created after DATE."
- (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 date))
- 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))
- (push (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))
-
- (deffoo nnspool-request-post (&optional server)
- "Post a new news in current buffer."
- (save-excursion
- (let* ((process-connection-type nil) ; t bugs out on Solaris
- (inews-buffer (generate-new-buffer " *nnspool post*"))
- (proc
- (condition-case err
- (apply 'start-process "*nnspool inews*" inews-buffer
- nnspool-inews-program nnspool-inews-switches)
- (error
- (nnheader-report 'nnspool "inews error: %S" err)))))
- (if (not proc)
- ;; The inews program failed.
- ()
- (nnheader-report 'nnspool "")
- (set-process-sentinel proc 'nnspool-inews-sentinel)
- (process-send-region proc (point-min) (point-max))
- ;; We slap a condition-case around this, because the process may
- ;; have exited already...
- (ignore-errors
- (process-send-eof proc))
- t))))
-
-
-
- ;;; Internal functions.
-
- (defun nnspool-inews-sentinel (proc status)
- (save-excursion
- (set-buffer (process-buffer proc))
- (goto-char (point-min))
- (if (or (zerop (buffer-size))
- (search-forward "spooled" nil t))
- (kill-buffer (current-buffer))
- ;; Make status message by folding lines.
- (while (re-search-forward "[ \t\n]+" nil t)
- (replace-match " " t t))
- (nnheader-report 'nnspool "%s" (buffer-string))
- (message "nnspool: %s" nnspool-status-string)
- (ding)
- (run-hooks 'nnspool-rejected-article-hook))))
-
- (defun nnspool-retrieve-headers-with-nov (articles &optional fetch-old)
- (if (or gnus-nov-is-evil nnspool-nov-is-evil)
- nil
- (let ((nov (nnheader-group-pathname
- nnspool-current-group nnspool-nov-directory ".overview"))
- (arts articles)
- ;; 1997/8/14 by MORIOKA Tomohiko
- ;; for Win32
- (nnheader-file-coding-system nnspool-file-coding-system)
- last)
- (if (not (file-exists-p nov))
- ()
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (if nnspool-sift-nov-with-sed
- (nnspool-sift-nov-with-sed articles nov)
- (nnheader-insert-file-contents nov)
- (if (and fetch-old
- (not (numberp fetch-old)))
- t ; We want all the headers.
- (ignore-errors
- ;; Delete unwanted NOV lines.
- (nnheader-nov-delete-outside-range
- (if fetch-old (max 1 (- (car articles) fetch-old))
- (car articles))
- (car (last articles)))
- ;; If the buffer is empty, this wasn't very successful.
- (unless (zerop (buffer-size))
- ;; We check what the last article number was.
- ;; The NOV file may be out of sync with the articles
- ;; in the group.
- (forward-line -1)
- (setq last (read (current-buffer)))
- (if (= last (car articles))
- ;; Yup, it's all there.
- t
- ;; Perhaps not. We try to find the missing articles.
- (while (and arts
- (<= last (car arts)))
- (pop arts))
- ;; The articles in `arts' are missing from the buffer.
- (while arts
- (nnspool-insert-nov-head (pop arts)))
- t))))))))))
-
- (defun nnspool-insert-nov-head (article)
- "Read the head of ARTICLE, convert to NOV headers, and insert."
- (save-excursion
- (let ((cur (current-buffer))
- buf)
- (setq buf (nnheader-set-temp-buffer " *nnspool head*"))
- (when (nnheader-insert-head
- (nnspool-article-pathname nnspool-current-group article))
- (nnheader-insert-article-line article)
- (let ((headers (nnheader-parse-head)))
- (set-buffer cur)
- (goto-char (point-max))
- (nnheader-insert-nov headers)))
- (kill-buffer buf))))
-
- (defun nnspool-sift-nov-with-sed (articles file)
- (let ((first (car articles))
- (last (progn (while (cdr articles) (setq articles (cdr articles)))
- (car articles))))
- (call-process "awk" nil t nil
- (format "BEGIN {firstmsg=%d; lastmsg=%d;}\n $1 >= firstmsg && $1 <= lastmsg {print;}"
- (1- first) (1+ last))
- file)))
-
- ;; Fixed by fdc@cliwe.ping.de (Frank D. Cringle).
- ;; Find out what group an article identified by a Message-ID is in.
- (defun nnspool-find-id (id)
- (save-excursion
- (set-buffer (get-buffer-create " *nnspool work*"))
- (buffer-disable-undo (current-buffer))
- (erase-buffer)
- (ignore-errors
- (call-process "grep" nil t nil (regexp-quote id) nnspool-history-file))
- (goto-char (point-min))
- (prog1
- (when (looking-at "<[^>]+>[ \t]+[-0-9~]+[ \t]+\\([^ /\t\n]+\\)/\\([0-9]+\\)[ \t\n]")
- (cons (match-string 1) (string-to-int (match-string 2))))
- (kill-buffer (current-buffer)))))
-
- (defun nnspool-find-file (file)
- "Insert FILE in server buffer safely."
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (condition-case ()
- ;; 1997/8/14 by MORIOKA Tomohiko
- ;; for Win32
- (let ((nnheader-file-coding-system nnspool-file-coding-system))
- (nnheader-insert-file-contents file)
- t)
- (file-error nil)))
-
- (defun nnspool-possibly-change-directory (group)
- (if (not group)
- t
- (let ((pathname (nnspool-article-pathname group)))
- (if (file-directory-p pathname)
- (setq nnspool-current-directory pathname
- nnspool-current-group group)
- (nnheader-report 'nnspool "No such newsgroup: %s" group)))))
-
- (defun nnspool-article-pathname (group &optional article)
- "Find the path for GROUP."
- (nnheader-group-pathname group nnspool-spool-directory article))
-
- (defun nnspool-seconds-since-epoch (date)
- (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
- (timezone-parse-date date)))
- (ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
- (timezone-parse-time
- (aref (timezone-parse-date date) 3))))
- (unix (encode-time (nth 2 ttime) (nth 1 ttime) (nth 0 ttime)
- (nth 2 tdate) (nth 1 tdate) (nth 0 tdate)
- (nth 4 tdate))))
- (+ (* (car unix) 65536.0)
- (cadr unix))))
-
- (provide 'nnspool)
-
- ;;; nnspool.el ends here
-