[bpt/emacs.git] / lisp / gnus / nnspool.el

;;; nnspool.el --- spool access for GNU Emacs
;; Copyright (C) 1988,89,90,93,94,95,96,97,98 Free Software Foundation, Inc.

;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
;; 	Lars Magne Ingebrigtsen <larsi@gnus.org>
;; 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.")

(defvoo nnspool-file-coding-system nnheader-file-coding-system
  "Coding system for nnspool.")

;; 1997/8/14 by MORIOKA Tomohiko
(defvoo nnspool-file-coding-system nnheader-file-coding-system
  "Coding system for nnspool.")

\f

(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 "")

\f
;;; 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)))
	     (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))
		 (nnheader-message 5 "nnspool: Receiving headers... %d%%"
			  (/ (* count 100) number))))

	  (when do-message
	    (nnheader-message 5 "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))))


\f
;;; 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))
      (nnheader-message 5 "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)
      	  (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 ()
      (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
Commit	Line	Data
eec82323	1	;;; nnspool.el --- spool access for GNU Emacs
6748645f	2	;; Copyright (C) 1988,89,90,93,94,95,96,97,98 Free Software Foundation, Inc.
eec82323 LMI	3
eec82323 LMI	4	;; Author: Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
6748645f	5	;; Lars Magne Ingebrigtsen <larsi@gnus.org>
eec82323 LMI	6	;; Keywords: news
	7
	8	;; This file is part of GNU Emacs.
	9
	10	;; GNU Emacs is free software; you can redistribute it and/or modify
	11	;; it under the terms of the GNU General Public License as published by
	12	;; the Free Software Foundation; either version 2, or (at your option)
	13	;; any later version.
	14
	15	;; GNU Emacs is distributed in the hope that it will be useful,
	16	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;; GNU General Public License for more details.
	19
	20	;; You should have received a copy of the GNU General Public License
	21	;; along with GNU Emacs; see the file COPYING. If not, write to the
	22	;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	23	;; Boston, MA 02111-1307, USA.
	24
	25	;;; Commentary:
	26
	27	;;; Code:
	28
	29	(require 'nnheader)
	30	(require 'nntp)
	31	(require 'timezone)
	32	(require 'nnoo)
	33	(eval-when-compile (require 'cl))
	34
	35	(nnoo-declare nnspool)
	36
	37	(defvoo nnspool-inews-program news-inews-program
	38	"Program to post news.
	39	This is most commonly `inews' or `injnews'.")
	40
	41	(defvoo nnspool-inews-switches '("-h" "-S")
	42	"Switches for nnspool-request-post to pass to `inews' for posting news.
	43	If you are using Cnews, you probably should set this variable to nil.")
	44
	45	(defvoo nnspool-spool-directory (file-name-as-directory news-path)
	46	"Local news spool directory.")
	47
	48	(defvoo nnspool-nov-directory (concat nnspool-spool-directory "over.view/")
	49	"Local news nov directory.")
	50
	51	(defvoo nnspool-lib-dir "/usr/lib/news/"
	52	"Where the local news library files are stored.")
	53
	54	(defvoo nnspool-active-file (concat nnspool-lib-dir "active")
	55	"Local news active file.")
	56
	57	(defvoo nnspool-newsgroups-file (concat nnspool-lib-dir "newsgroups")
	58	"Local news newsgroups file.")
	59
	60	(defvoo nnspool-distributions-file (concat nnspool-lib-dir "distribs.pat")
	61	"Local news distributions file.")
	62
	63	(defvoo nnspool-history-file (concat nnspool-lib-dir "history")
	64	"Local news history file.")
	65
	66	(defvoo nnspool-active-times-file (concat nnspool-lib-dir "active.times")
	67	"Local news active date file.")
	68
	69	(defvoo nnspool-large-newsgroup 50
70	"The number of the articles which indicates a large newsgroup.
71	If the number of the articles is greater than the value, verbose
72	messages will be shown to indicate the current status.")
73
74	(defvoo nnspool-nov-is-evil nil
75	"Non-nil means that nnspool will never return NOV lines instead of headers.")
76
77	(defconst nnspool-sift-nov-with-sed nil
78	"If non-nil, use sed to get the relevant portion from the overview file.
79	If nil, nnspool will load the entire file into a buffer and process it
80	there.")
81
82	(defvoo nnspool-rejected-article-hook nil
83	"*A hook that will be run when an article has been rejected by the server.")
84
6748645f LMI	85	(defvoo nnspool-file-coding-system nnheader-file-coding-system
	86	"Coding system for nnspool.")
	87
3a787ab0 KH	88	;; 1997/8/14 by MORIOKA Tomohiko
	89	(defvoo nnspool-file-coding-system nnheader-file-coding-system
	90	"Coding system for nnspool.")
	91
eec82323 LMI	92	\f
	93
	94	(defconst nnspool-version "nnspool 2.0"
	95	"Version numbers of this version of NNSPOOL.")
	96
	97	(defvoo nnspool-current-directory nil
	98	"Current news group directory.")
	99
	100	(defvoo nnspool-current-group nil)
	101	(defvoo nnspool-status-string "")
	102
	103	\f
	104	;;; Interface functions.
	105
	106	(nnoo-define-basics nnspool)
	107
	108	(deffoo nnspool-retrieve-headers (articles &optional group server fetch-old)
	109	"Retrieve the headers of ARTICLES."
	110	(save-excursion
	111	(set-buffer nntp-server-buffer)
	112	(erase-buffer)
	113	(when (nnspool-possibly-change-directory group)
	114	(let* ((number (length articles))
	115	(count 0)
	116	(default-directory nnspool-current-directory)
	117	(do-message (and (numberp nnspool-large-newsgroup)
	118	(> number nnspool-large-newsgroup)))
3a787ab0	119	(nnheader-file-coding-system nnspool-file-coding-system)
eec82323 LMI	120	file beg article ag)
	121	(if (and (numberp (car articles))
	122	(nnspool-retrieve-headers-with-nov articles fetch-old))
	123	;; We successfully retrieved the NOV headers.
	124	'nov
	125	;; No NOV headers here, so we do it the hard way.
	126	(while (setq article (pop articles))
	127	(if (stringp article)
	128	;; This is a Message-ID.
	129	(setq ag (nnspool-find-id article)
	130	file (and ag (nnspool-article-pathname
	131	(car ag) (cdr ag)))
	132	article (cdr ag))
	133	;; This is an article in the current group.
	134	(setq file (int-to-string article)))
	135	;; Insert the head of the article.
	136	(when (and file
	137	(file-exists-p file))
	138	(insert "221 ")
	139	(princ article (current-buffer))
	140	(insert " Article retrieved.\n")
	141	(setq beg (point))
	142	(inline (nnheader-insert-head file))
	143	(goto-char beg)
	144	(search-forward "\n\n" nil t)
	145	(forward-char -1)
	146	(insert ".\n")
	147	(delete-region (point) (point-max)))
	148
	149	(and do-message
	150	(zerop (% (incf count) 20))
6748645f	151	(nnheader-message 5 "nnspool: Receiving headers... %d%%"
eec82323 LMI	152	(/ (* count 100) number))))
	153
	154	(when do-message
6748645f	155	(nnheader-message 5 "nnspool: Receiving headers...done"))
eec82323 LMI	156
	157	;; Fold continuation lines.
	158	(nnheader-fold-continuation-lines)
	159	'headers)))))
	160
	161	(deffoo nnspool-open-server (server &optional defs)
	162	(nnoo-change-server 'nnspool server defs)
	163	(cond
	164	((not (file-exists-p nnspool-spool-directory))
	165	(nnspool-close-server)
	166	(nnheader-report 'nnspool "Spool directory doesn't exist: %s"
	167	nnspool-spool-directory))
	168	((not (file-directory-p
	169	(directory-file-name
	170	(file-truename nnspool-spool-directory))))
	171	(nnspool-close-server)
	172	(nnheader-report 'nnspool "Not a directory: %s" nnspool-spool-directory))
	173	((not (file-exists-p nnspool-active-file))
	174	(nnheader-report 'nnspool "The active file doesn't exist: %s"
	175	nnspool-active-file))
	176	(t
	177	(nnheader-report 'nnspool "Opened server %s using directory %s"
	178	server nnspool-spool-directory)
	179	t)))
	180
	181	(deffoo nnspool-request-article (id &optional group server buffer)
	182	"Select article by message ID (or number)."
	183	(nnspool-possibly-change-directory group)
	184	(let ((nntp-server-buffer (or buffer nntp-server-buffer))
	185	file ag)
	186	(if (stringp id)
	187	;; This is a Message-ID.
	188	(when (setq ag (nnspool-find-id id))
	189	(setq file (nnspool-article-pathname (car ag) (cdr ag))))
	190	(setq file (nnspool-article-pathname nnspool-current-group id)))
	191	(and file
	192	(file-exists-p file)
	193	(not (file-directory-p file))
	194	(save-excursion (nnspool-find-file file))
	195	;; We return the article number and group name.
	196	(if (numberp id)
	197	(cons nnspool-current-group id)
	198	ag))))
	199
	200	(deffoo nnspool-request-body (id &optional group server)
	201	"Select article body by message ID (or number)."
	202	(nnspool-possibly-change-directory group)
	203	(let ((res (nnspool-request-article id)))
	204	(when res
	205	(save-excursion
	206	(set-buffer nntp-server-buffer)
	207	(goto-char (point-min))
	208	(when (search-forward "\n\n" nil t)
	209	(delete-region (point-min) (point)))
	210	res))))
	211
	212	(deffoo nnspool-request-head (id &optional group server)
	213	"Select article head by message ID (or number)."
	214	(nnspool-possibly-change-directory group)
	215	(let ((res (nnspool-request-article id)))
	216	(when res
	217	(save-excursion
	218	(set-buffer nntp-server-buffer)
	219	(goto-char (point-min))
220	(when (search-forward "\n\n" nil t)
221	(delete-region (1- (point)) (point-max)))
222	(nnheader-fold-continuation-lines)))
223	res))
224
225	(deffoo nnspool-request-group (group &optional server dont-check)
226	"Select news GROUP."
227	(let ((pathname (nnspool-article-pathname group))
228	dir)
229	(if (not (file-directory-p pathname))
230	(nnheader-report
231	'nnspool "Invalid group name (no such directory): %s" group)
232	(setq nnspool-current-directory pathname)
233	(nnheader-report 'nnspool "Selected group %s" group)
234	(if dont-check
235	(progn
236	(nnheader-report 'nnspool "Selected group %s" group)
237	t)
238	;; Yes, completely empty spool directories are possible.
239	;; Fix by Sudish Joseph <joseph@cis.ohio-state.edu>
240	(when (setq dir (directory-files pathname nil "^[0-9]+$" t))
241	(setq dir
242	(sort (mapcar (lambda (name) (string-to-int name)) dir) '<)))
243	(if dir
244	(nnheader-insert
245	"211 %d %d %d %s\n" (length dir) (car dir)
246	(progn (while (cdr dir) (setq dir (cdr dir))) (car dir))
247	group)
248	(nnheader-report 'nnspool "Empty group %s" group)
249	(nnheader-insert "211 0 0 0 %s\n" group))))))
250
251	(deffoo nnspool-request-type (group &optional article)
252	'news)
253
254	(deffoo nnspool-close-group (group &optional server)
255	t)
256
257	(deffoo nnspool-request-list (&optional server)
258	"List active newsgroups."
259	(save-excursion
260	(or (nnspool-find-file nnspool-active-file)
261	(nnheader-report 'nnspool (nnheader-file-error nnspool-active-file)))))
262
263	(deffoo nnspool-request-list-newsgroups (&optional server)
264	"List newsgroups (defined in NNTP2)."
265	(save-excursion
266	(or (nnspool-find-file nnspool-newsgroups-file)
267	(nnheader-report 'nnspool (nnheader-file-error
268	nnspool-newsgroups-file)))))
269
270	(deffoo nnspool-request-list-distributions (&optional server)
271	"List distributions (defined in NNTP2)."
272	(save-excursion
273	(or (nnspool-find-file nnspool-distributions-file)
274	(nnheader-report 'nnspool (nnheader-file-error
275	nnspool-distributions-file)))))
276
277	;; Suggested by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.
278	(deffoo nnspool-request-newgroups (date &optional server)
279	"List groups created after DATE."
280	(if (nnspool-find-file nnspool-active-times-file)
281	(save-excursion
282	;; Find the last valid line.
283	(goto-char (point-max))
284	(while (and (not (looking-at
285	"\\([^ ]+\\) +\\([0-9]+\\)[0-9][0-9][0-9] "))
286	(zerop (forward-line -1))))
287	(let ((seconds (nnspool-seconds-since-epoch date))
288	groups)
289	;; Go through lines and add the latest groups to a list.
290	(while (and (looking-at "\\([^ ]+\\) +[0-9]+ ")
291	(progn
292	;; We insert a .0 to make the list reader
293	;; interpret the number as a float. It is far
294	;; too big to be stored in a lisp integer.
295	(goto-char (1- (match-end 0)))
296	(insert ".0")
297	(> (progn
298	(goto-char (match-end 1))
299	(read (current-buffer)))
300	seconds))
301	(push (buffer-substring
302	(match-beginning 1) (match-end 1))
303	groups)
304	(zerop (forward-line -1))))
305	(erase-buffer)
306	(while groups
307	(insert (car groups) " 0 0 y\n")
308	(setq groups (cdr groups))))
309	t)
310	nil))
311
312	(deffoo nnspool-request-post (&optional server)
313	"Post a new news in current buffer."
314	(save-excursion
315	(let* ((process-connection-type nil) ; t bugs out on Solaris
316	(inews-buffer (generate-new-buffer " nnspool post"))
317	(proc
318	(condition-case err
319	(apply 'start-process "nnspool inews" inews-buffer
320	nnspool-inews-program nnspool-inews-switches)
321	(error
322	(nnheader-report 'nnspool "inews error: %S" err)))))
323	(if (not proc)
324	;; The inews program failed.
325	()
326	(nnheader-report 'nnspool "")
327	(set-process-sentinel proc 'nnspool-inews-sentinel)
328	(process-send-region proc (point-min) (point-max))
329	;; We slap a condition-case around this, because the process may
330	;; have exited already...
331	(ignore-errors
332	(process-send-eof proc))
333	t))))
334
335
336	\f
337	;;; Internal functions.
338
339	(defun nnspool-inews-sentinel (proc status)
340	(save-excursion
341	(set-buffer (process-buffer proc))
342	(goto-char (point-min))
343	(if (or (zerop (buffer-size))
344	(search-forward "spooled" nil t))
345	(kill-buffer (current-buffer))
346	;; Make status message by folding lines.
347	(while (re-search-forward "[ \t\n]+" nil t)
348	(replace-match " " t t))
349	(nnheader-report 'nnspool "%s" (buffer-string))
6748645f	350	(nnheader-message 5 "nnspool: %s" nnspool-status-string)
eec82323 LMI	351	(ding)
	352	(run-hooks 'nnspool-rejected-article-hook))))
	353
	354	(defun nnspool-retrieve-headers-with-nov (articles &optional fetch-old)
	355	(if (or gnus-nov-is-evil nnspool-nov-is-evil)
	356	nil
	357	(let ((nov (nnheader-group-pathname
	358	nnspool-current-group nnspool-nov-directory ".overview"))
	359	(arts articles)
3a787ab0	360	(nnheader-file-coding-system nnspool-file-coding-system)
eec82323 LMI	361	last)
	362	(if (not (file-exists-p nov))
	363	()
	364	(save-excursion
	365	(set-buffer nntp-server-buffer)
	366	(erase-buffer)
	367	(if nnspool-sift-nov-with-sed
	368	(nnspool-sift-nov-with-sed articles nov)
	369	(nnheader-insert-file-contents nov)
	370	(if (and fetch-old
	371	(not (numberp fetch-old)))
	372	t ; We want all the headers.
	373	(ignore-errors
	374	;; Delete unwanted NOV lines.
	375	(nnheader-nov-delete-outside-range
	376	(if fetch-old (max 1 (- (car articles) fetch-old))
	377	(car articles))
	378	(car (last articles)))
	379	;; If the buffer is empty, this wasn't very successful.
	380	(unless (zerop (buffer-size))
	381	;; We check what the last article number was.
	382	;; The NOV file may be out of sync with the articles
	383	;; in the group.
	384	(forward-line -1)
	385	(setq last (read (current-buffer)))
	386	(if (= last (car articles))
	387	;; Yup, it's all there.
	388	t
	389	;; Perhaps not. We try to find the missing articles.
	390	(while (and arts
	391	(<= last (car arts)))
	392	(pop arts))
	393	;; The articles in `arts' are missing from the buffer.
	394	(while arts
	395	(nnspool-insert-nov-head (pop arts)))
	396	t))))))))))
	397
	398	(defun nnspool-insert-nov-head (article)
	399	"Read the head of ARTICLE, convert to NOV headers, and insert."
	400	(save-excursion
	401	(let ((cur (current-buffer))
	402	buf)
	403	(setq buf (nnheader-set-temp-buffer " nnspool head"))
	404	(when (nnheader-insert-head
	405	(nnspool-article-pathname nnspool-current-group article))
	406	(nnheader-insert-article-line article)
	407	(let ((headers (nnheader-parse-head)))
	408	(set-buffer cur)
	409	(goto-char (point-max))
	410	(nnheader-insert-nov headers)))
	411	(kill-buffer buf))))
	412
	413	(defun nnspool-sift-nov-with-sed (articles file)
	414	(let ((first (car articles))
	415	(last (progn (while (cdr articles) (setq articles (cdr articles)))
	416	(car articles))))
	417	(call-process "awk" nil t nil
	418	(format "BEGIN {firstmsg=%d; lastmsg=%d;}\n $1 >= firstmsg && $1 <= lastmsg {print;}"
	419	(1- first) (1+ last))
	420	file)))
	421
	422	;; Fixed by fdc@cliwe.ping.de (Frank D. Cringle).
	423	;; Find out what group an article identified by a Message-ID is in.
	424	(defun nnspool-find-id (id)
425	(save-excursion
426	(set-buffer (get-buffer-create " nnspool work"))
427	(buffer-disable-undo (current-buffer))
428	(erase-buffer)
429	(ignore-errors
430	(call-process "grep" nil t nil (regexp-quote id) nnspool-history-file))
431	(goto-char (point-min))
432	(prog1
433	(when (looking-at "<[^>]+>[ \t]+[-0-9~]+[ \t]+\\([^ /\t\n]+\\)/\\([0-9]+\\)[ \t\n]")
434	(cons (match-string 1) (string-to-int (match-string 2))))
435	(kill-buffer (current-buffer)))))
436
437	(defun nnspool-find-file (file)
438	"Insert FILE in server buffer safely."
439	(set-buffer nntp-server-buffer)
440	(erase-buffer)
441	(condition-case ()
3a787ab0 KH	442	(let ((nnheader-file-coding-system nnspool-file-coding-system))
	443	(nnheader-insert-file-contents file)
	444	t)
eec82323 LMI	445	(file-error nil)))
	446
	447	(defun nnspool-possibly-change-directory (group)
	448	(if (not group)
	449	t
	450	(let ((pathname (nnspool-article-pathname group)))
	451	(if (file-directory-p pathname)
	452	(setq nnspool-current-directory pathname
	453	nnspool-current-group group)
	454	(nnheader-report 'nnspool "No such newsgroup: %s" group)))))
	455
	456	(defun nnspool-article-pathname (group &optional article)
	457	"Find the path for GROUP."
	458	(nnheader-group-pathname group nnspool-spool-directory article))
	459
	460	(defun nnspool-seconds-since-epoch (date)
	461	(let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
	462	(timezone-parse-date date)))
	463	(ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
	464	(timezone-parse-time
	465	(aref (timezone-parse-date date) 3))))
	466	(unix (encode-time (nth 2 ttime) (nth 1 ttime) (nth 0 ttime)
	467	(nth 2 tdate) (nth 1 tdate) (nth 0 tdate)
	468	(nth 4 tdate))))
	469	(+ (* (car unix) 65536.0)
	470	(cadr unix))))
	471
	472	(provide 'nnspool)
	473
	474	;;; nnspool.el ends here