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| author | Gerd Moellmann <gerd@gnu.org> | 2000-09-19 13:40:08 +0000 |
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| committer | Gerd Moellmann <gerd@gnu.org> | 2000-09-19 13:40:08 +0000 |
| commit | c113de23613952ed67a3bca79363b30ab7e406c3 (patch) | |
| tree | fd8063340169da2af53fa73046debd7a220904ac /lisp/gnus/nnultimate.el | |
| parent | 16409b0bb832ae376894cbad5892bf7623caeaaf (diff) | |
| download | emacs-c113de23613952ed67a3bca79363b30ab7e406c3.tar.gz | |
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Diffstat (limited to 'lisp/gnus/nnultimate.el')
| -rw-r--r-- | lisp/gnus/nnultimate.el | 452 |
1 files changed, 452 insertions, 0 deletions
diff --git a/lisp/gnus/nnultimate.el b/lisp/gnus/nnultimate.el new file mode 100644 index 00000000000..734ab7129a6 --- /dev/null +++ b/lisp/gnus/nnultimate.el @@ -0,0 +1,452 @@ +;;; nnultimate.el --- interfacing with the Ultimate Bulletin Board system +;; Copyright (C) 1999, 2000 Free Software Foundation, Inc. + +;; Author: 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: + +;; Note: You need to have `url' and `w3' installed for this +;; backend to work. + +;;; Code: + +(eval-when-compile (require 'cl)) + +(require 'nnoo) +(require 'message) +(require 'gnus-util) +(require 'gnus) +(require 'nnmail) +(require 'mm-util) +(eval-when-compile + (ignore-errors + (require 'nnweb))) +;; Report failure to find w3 at load time if appropriate. +(eval '(require 'nnweb)) + +(nnoo-declare nnultimate) + +(defvoo nnultimate-directory (nnheader-concat gnus-directory "ultimate/") + "Where nnultimate will save its files.") + +(defvoo nnultimate-address "" + "The address of the Ultimate bulletin board.") + +;;; Internal variables + +(defvar nnultimate-groups-alist nil) +(defvoo nnultimate-groups nil) +(defvoo nnultimate-headers nil) +(defvoo nnultimate-articles nil) + +;;; Interface functions + +(nnoo-define-basics nnultimate) + +(deffoo nnultimate-retrieve-headers (articles &optional group server fetch-old) + (nnultimate-possibly-change-server group server) + (unless gnus-nov-is-evil + (let* ((last (car (last articles))) + (did nil) + (start 1) + (entry (assoc group nnultimate-groups)) + (sid (nth 2 entry)) + (topics (nth 4 entry)) + (mapping (nth 5 entry)) + (old-total (or (nth 6 entry) 1)) + (furl "forumdisplay.cgi?action=topics&number=%d&DaysPrune=1000") + (furls (list (concat nnultimate-address (format furl sid)))) + headers article subject score from date lines parent point + contents tinfo fetchers map elem a href garticles topic old-max + inc datel table string current-page total-contents pages + farticles forum-contents parse furl-fetched mmap farticle) + (setq map mapping) + (while (and (setq article (car articles)) + map) + (while (and map + (or (> article (caar map)) + (< (cadar map) (caar map)))) + (pop map)) + (when (setq mmap (car map)) + (setq farticle -1) + (while (and article + (<= article (nth 1 mmap))) + ;; Do we already have a fetcher for this topic? + (if (setq elem (assq (nth 2 mmap) fetchers)) + ;; Yes, so we just add the spec to the end. + (nconc elem (list (cons article + (+ (nth 3 mmap) (incf farticle))))) + ;; No, so we add a new one. + (push (list (nth 2 mmap) + (cons article + (+ (nth 3 mmap) (incf farticle)))) + fetchers)) + (pop articles) + (setq article (car articles))))) + ;; Now we have the mapping from/to Gnus/nnultimate article numbers, + ;; so we start fetching the topics that we need to satisfy the + ;; request. + (if (not fetchers) + (save-excursion + (set-buffer nntp-server-buffer) + (erase-buffer)) + (setq nnultimate-articles nil) + (mm-with-unibyte-buffer + (dolist (elem fetchers) + (setq pages 1 + current-page 1 + total-contents nil) + (while (<= current-page pages) + (erase-buffer) + (setq subject (nth 2 (assq (car elem) topics))) + (setq href (nth 3 (assq (car elem) topics))) + (if (= current-page 1) + (nnweb-insert href) + (string-match "\\.html$" href) + (nnweb-insert (concat (substring href 0 (match-beginning 0)) + "-" (number-to-string current-page) + (match-string 0 href)))) + (goto-char (point-min)) + (setq contents + (ignore-errors (w3-parse-buffer (current-buffer)))) + (setq table (nnultimate-find-forum-table contents)) + (setq string (mapconcat 'identity (nnweb-text table) "")) + (when (string-match "topic is \\([0-9]\\) pages" string) + (setq pages (string-to-number (match-string 1 string))) + (setcdr table nil) + (setq table (nnultimate-find-forum-table contents))) + (setq contents (cdr (nth 2 (car (nth 2 table))))) + (setq total-contents (nconc total-contents contents)) + (incf current-page)) + ;;(setq total-contents (nreverse total-contents)) + (dolist (art (cdr elem)) + (if (not (nth (1- (cdr art)) total-contents)) + () ;(debug) + (push (list (car art) + (nth (1- (cdr art)) total-contents) + subject) + nnultimate-articles))))) + (setq nnultimate-articles + (sort nnultimate-articles 'car-less-than-car)) + ;; Now we have all the articles, conveniently in an alist + ;; where the key is the Gnus article number. + (dolist (articlef nnultimate-articles) + (setq article (nth 0 articlef) + contents (nth 1 articlef) + subject (nth 2 articlef)) + (setq from (mapconcat 'identity + (nnweb-text (car (nth 2 contents))) + " ") + datel (nnweb-text (nth 2 (car (cdr (nth 2 contents)))))) + (while datel + (when (string-match "Posted" (car datel)) + (setq date (substring (car datel) (match-end 0)) + datel nil)) + (pop datel)) + (setq date (delete "" (split-string date "[- \n\t\r ���]"))) + (if (or (member "AM" date) + (member "PM" date)) + (setq date (format "%s %s %s %s" + (car (rassq (string-to-number (nth 0 date)) + parse-time-months)) + (nth 1 date) (nth 2 date) (nth 3 date))) + (setq date (format "%s %s %s %s" + (car (rassq (string-to-number (nth 1 date)) + parse-time-months)) + (nth 0 date) (nth 2 date) (nth 3 date)))) + (push + (cons + article + (make-full-mail-header + article subject + from (or date "") + (concat "<" (number-to-string sid) "%" + (number-to-string article) + "@ultimate>") + "" 0 + (/ (length (mapconcat + 'identity + (nnweb-text + (cdr (nth 2 (nth 1 (nth 2 contents))))) + "")) + 70) + nil nil)) + headers)) + (setq nnultimate-headers (sort headers 'car-less-than-car)) + (save-excursion + (set-buffer nntp-server-buffer) + (mm-with-unibyte-current-buffer + (erase-buffer) + (dolist (header nnultimate-headers) + (nnheader-insert-nov (cdr header)))))) + 'nov))) + +(deffoo nnultimate-request-group (group &optional server dont-check) + (nnultimate-possibly-change-server nil server) + (when (not nnultimate-groups) + (nnultimate-request-list)) + (unless dont-check + (nnultimate-create-mapping group)) + (let ((elem (assoc group nnultimate-groups))) + (cond + ((not elem) + (nnheader-report 'nnultimate "Group does not exist")) + (t + (nnheader-report 'nnultimate "Opened group %s" group) + (nnheader-insert + "211 %d %d %d %s\n" (cadr elem) 1 (cadr elem) + (prin1-to-string group)))))) + +(deffoo nnultimate-request-close () + (setq nnultimate-groups-alist nil + nnultimate-groups nil)) + +(deffoo nnultimate-request-article (article &optional group server buffer) + (nnultimate-possibly-change-server group server) + (let ((contents (cdr (assq article nnultimate-articles)))) + (setq contents (cddr (nth 2 (nth 1 (nth 2 (car contents)))))) + (when contents + (save-excursion + (set-buffer (or buffer nntp-server-buffer)) + (erase-buffer) + (nnweb-insert-html (cons 'p (cons nil (list contents)))) + (goto-char (point-min)) + (insert "Content-Type: text/html\nMIME-Version: 1.0\n") + (let ((header (cdr (assq article nnultimate-headers)))) + (mm-with-unibyte-current-buffer + (nnheader-insert-header header))) + (nnheader-report 'nnultimate "Fetched article %s" article) + (cons group article))))) + +(deffoo nnultimate-request-list (&optional server) + (nnultimate-possibly-change-server nil server) + (mm-with-unibyte-buffer + (nnweb-insert + (if (string-match "/$" nnultimate-address) + (concat nnultimate-address "Ultimate.cgi") + nnultimate-address)) + (let ((contents (nth 2 (car (nth 2 + (nnultimate-find-forum-table + (w3-parse-buffer (current-buffer))))))) + sid elem description articles a href group forum + a1 a2) + (dolist (row contents) + (setq row (nth 2 row)) + (when (setq a (nnweb-parse-find 'a row)) + (setq group (car (last (nnweb-text a))) + href (cdr (assq 'href (nth 1 a)))) + (setq description (car (last (nnweb-text (nth 1 row))))) + (setq a1 (car (last (nnweb-text (nth 2 row))))) + (setq a2 (car (last (nnweb-text (nth 3 row))))) + (when (string-match "^[0-9]+$" a1) + (setq articles (string-to-number a1))) + (when (and a2 (string-match "^[0-9]+$" a2)) + (setq articles (max articles (string-to-number a2)))) + (when href + (string-match "number=\\([0-9]+\\)" href) + (setq forum (string-to-number (match-string 1 href))) + (if (setq elem (assoc group nnultimate-groups)) + (setcar (cdr elem) articles) + (push (list group articles forum description nil nil nil nil) + nnultimate-groups)))))) + (nnultimate-write-groups) + (nnultimate-generate-active) + t)) + +(deffoo nnultimate-request-newgroups (date &optional server) + (nnultimate-possibly-change-server nil server) + (nnultimate-generate-active) + t) + +(nnoo-define-skeleton nnultimate) + +;;; Internal functions + +(defun nnultimate-prune-days (group time) + "Compute the number of days to fetch info for." + (let ((old-time (nth 7 (assoc group nnultimate-groups)))) + (if (null old-time) + 1000 + (- (time-to-days time) (time-to-days old-time))))) + +(defun nnultimate-create-mapping (group) + (let* ((entry (assoc group nnultimate-groups)) + (sid (nth 2 entry)) + (topics (nth 4 entry)) + (mapping (nth 5 entry)) + (old-total (or (nth 6 entry) 1)) + (current-time (current-time)) + (furl + (concat "forumdisplay.cgi?action=topics&number=%d&DaysPrune=" + (number-to-string + (nnultimate-prune-days group current-time)))) + (furls (list (concat nnultimate-address (format furl sid)))) + contents forum-contents furl-fetched a subject href + garticles topic tinfo old-max inc parse) + (mm-with-unibyte-buffer + (while furls + (erase-buffer) + (nnweb-insert (pop furls)) + (goto-char (point-min)) + (setq parse (w3-parse-buffer (current-buffer))) + (setq contents + (cdr (nth 2 (car (nth 2 (nnultimate-find-forum-table + parse)))))) + (setq forum-contents (nconc contents forum-contents)) + (unless furl-fetched + (setq furl-fetched t) + ;; On the first time through this loop, we find all the + ;; forum URLs. + (dolist (a (nnweb-parse-find-all 'a parse)) + (let ((href (cdr (assq 'href (nth 1 a))))) + (when (and href + (string-match "forumdisplay.*startpoint" href)) + (push href furls)))) + (setq furls (nreverse furls)))) + ;; The main idea here is to map Gnus article numbers to + ;; nnultimate article numbers. Say there are three topics in + ;; this forum, the first with 4 articles, the seconds with 2, + ;; and the third with 1. Then this will translate into 7 Gnus + ;; article numbers, where 1-4 comes from the first topic, 5-6 + ;; from the second and 7 from the third. Now, then next time + ;; the group is entered, there's 2 new articles in topic one + ;; and 1 in topic three. Then Gnus article number 8-9 be 5-6 + ;; in topic one and 10 will be the 2 in topic three. + (dolist (row (reverse forum-contents)) + (setq row (nth 2 row)) + (when (setq a (nnweb-parse-find 'a row)) + (setq subject (car (last (nnweb-text a))) + href (cdr (assq 'href (nth 1 a)))) + (let ((artlist (nreverse (nnweb-text row))) + art) + (while (and (not art) + artlist) + (when (string-match "^[0-9]+$" (car artlist)) + (setq art (1+ (string-to-number (car artlist))))) + (pop artlist)) + (setq garticles art)) + (when garticles + (string-match "/\\([0-9]+\\).html" href) + (setq topic (string-to-number (match-string 1 href))) + (if (setq tinfo (assq topic topics)) + (progn + (setq old-max (cadr tinfo)) + (setcar (cdr tinfo) garticles)) + (setq old-max 0) + (push (list topic garticles subject href) topics) + (setcar (nthcdr 4 entry) topics)) + (when (not (= old-max garticles)) + (setq inc (- garticles old-max)) + (setq mapping (nconc mapping + (list + (list + old-total (1- (incf old-total inc)) + topic (1+ old-max))))) + (incf old-max inc) + (setcar (nthcdr 5 entry) mapping) + (setcar (nthcdr 6 entry) old-total)))))) + (setcar (nthcdr 7 entry) current-time) + (setcar (nthcdr 1 entry) (1- old-total)) + (nnultimate-write-groups) + mapping)) + +(defun nnultimate-possibly-change-server (&optional group server) + (nnultimate-init server) + (when (and server + (not (nnultimate-server-opened server))) + (nnultimate-open-server server)) + (unless nnultimate-groups-alist + (nnultimate-read-groups) + (setq nnultimate-groups (cdr (assoc nnultimate-address + nnultimate-groups-alist))))) + +(deffoo nnultimate-open-server (server &optional defs connectionless) + (nnheader-init-server-buffer) + (if (nnultimate-server-opened server) + t + (unless (assq 'nnultimate-address defs) + (setq defs (append defs (list (list 'nnultimate-address server))))) + (nnoo-change-server 'nnultimate server defs))) + +(defun nnultimate-read-groups () + (setq nnultimate-groups-alist nil) + (let ((file (expand-file-name "groups" nnultimate-directory))) + (when (file-exists-p file) + (mm-with-unibyte-buffer + (insert-file-contents file) + (goto-char (point-min)) + (setq nnultimate-groups-alist (read (current-buffer))))))) + +(defun nnultimate-write-groups () + (setq nnultimate-groups-alist + (delq (assoc nnultimate-address nnultimate-groups-alist) + nnultimate-groups-alist)) + (push (cons nnultimate-address nnultimate-groups) + nnultimate-groups-alist) + (with-temp-file (expand-file-name "groups" nnultimate-directory) + (prin1 nnultimate-groups-alist (current-buffer)))) + +(defun nnultimate-init (server) + "Initialize buffers and such." + (unless (file-exists-p nnultimate-directory) + (gnus-make-directory nnultimate-directory))) + +(defun nnultimate-generate-active () + (save-excursion + (set-buffer nntp-server-buffer) + (erase-buffer) + (dolist (elem nnultimate-groups) + (insert (prin1-to-string (car elem)) + " " (number-to-string (cadr elem)) " 1 y\n")))) + +(defun nnultimate-find-forum-table (contents) + (catch 'found + (nnultimate-find-forum-table-1 contents))) + +(defun nnultimate-find-forum-table-1 (contents) + (dolist (element contents) + (unless (stringp element) + (when (and (eq (car element) 'table) + (nnultimate-forum-table-p element)) + (throw 'found element)) + (when (nth 2 element) + (nnultimate-find-forum-table-1 (nth 2 element)))))) + +(defun nnultimate-forum-table-p (parse) + (when (not (apply 'gnus-or + (mapcar + (lambda (p) + (nnweb-parse-find 'table p)) + (nth 2 parse)))) + (let ((href (cdr (assq 'href (nth 1 (nnweb-parse-find 'a parse 20))))) + case-fold-search) + (when (and href (string-match + "postings\\|forumdisplay\\|Forum[0-9]+/HTML\\|getbio" + href)) + t)))) + +(provide 'nnultimate) + +;; Local Variables: +;; coding: iso-8859-1 +;; End: + +;;; nnultimate.el ends here |