lisp/gnus/nnlistserv.el

   1 ;;; nnlistserv.el --- retrieving articles via web mailing list archives
   2 ;; Copyright (C) 1997,98 Free Software Foundation, Inc.
   3
   4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   5 ;; Keywords: news, mail
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software; you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation; either version 2, or (at your option)
  12 ;; any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22 ;; Boston, MA 02111-1307, USA.
  23
  24 ;;; Commentary:
  25
  26 ;; Note: You need to have `url' and `w3' installed for this
  27 ;; backend to work.
  28
  29 ;;; Code:
  30
  31 (eval-when-compile (require 'cl))
  32
  33 (require 'nnoo)
  34 (eval-when-compile (ignore-errors (require 'nnweb)))
  35 (eval '(require 'nnweb))
  36
  37 (nnoo-declare nnlistserv
  38   nnweb)
  39
  40 (defvoo nnlistserv-directory (nnheader-concat gnus-directory "nnlistserv/")
  41   "Where nnlistserv will save its files."
  42   nnweb-directory)
  43
  44 (defvoo nnlistserv-name 'kk
  45   "What search engine type is being used."
  46   nnweb-type)
  47
  48 (defvoo nnlistserv-type-definition
  49   '((kk
  50      (article . nnlistserv-kk-wash-article)
  51      (map . nnlistserv-kk-create-mapping)
  52      (search . nnlistserv-kk-search)
  53      (address . "http://www.itk.ntnu.no/ansatte/Andresen_Trond/kk-f/%s/")
  54      (pages "fra160396" "fra160796" "fra061196" "fra160197"
  55             "fra090997" "fra040797" "fra130397" "nye")
  56      (index . "date.html")
  57      (identifier . nnlistserv-kk-identity)))
  58   "Type-definition alist."
  59   nnweb-type-definition)
  60
  61 (defvoo nnlistserv-search nil
  62   "Search string to feed to DejaNews."
  63   nnweb-search)
  64
  65 (defvoo nnlistserv-ephemeral-p nil
  66   "Whether this nnlistserv server is ephemeral."
  67   nnweb-ephemeral-p)
  68
  69 ;;; Internal variables
  70
  71 ;;; Interface functions
  72
  73 (nnoo-define-basics nnlistserv)
  74
  75 (nnoo-import nnlistserv
  76   (nnweb))
  77
  78 ;;; Internal functions
  79
  80 ;;;
  81 ;;; KK functions.
  82 ;;;
  83
  84 (defun nnlistserv-kk-create-mapping ()
  85   "Perform the search and create an number-to-url alist."
  86   (save-excursion
  87     (set-buffer nnweb-buffer)
  88     (let ((case-fold-search t)
  89           (active (or (cadr (assoc nnweb-group nnweb-group-alist))
  90                       (cons 1 0)))
  91           (pages (nnweb-definition 'pages))
  92           map url page subject from )
  93       (while (setq page (pop pages))
  94         (erase-buffer)
  95         (when (funcall (nnweb-definition 'search) page)
  96           ;; Go through all the article hits on this page.
  97           (goto-char (point-min))
  98           (nnweb-decode-entities)
  99           (goto-char (point-min))
 100           (while (re-search-forward "^<li> *<a href=\"\\([^\"]+\\)\"><b>\\([^\\>]+\\)</b></a> *<[^>]+><i>\\([^>]+\\)<" nil t)
 101             (setq url (match-string 1)
 102                   subject (match-string 2)
 103                   from (match-string 3))
 104             (setq url (concat (format (nnweb-definition 'address) page) url))
 105             (unless (nnweb-get-hashtb url)
 106               (push
 107                (list
 108                 (incf (cdr active))
 109                 (make-full-mail-header
 110                  (cdr active) subject from ""
 111                  (concat "<" (nnweb-identifier url) "@kk>")
 112                  nil 0 0 url))
 113                map)
 114               (nnweb-set-hashtb (cadar map) (car map))
 115               (nnheader-message 5 "%s %s %s" (cdr active) (point) pages)
 116               ))))
 117       ;; Return the articles in the right order.
 118       (setq nnweb-articles
 119             (sort (nconc nnweb-articles map) 'car-less-than-car)))))
 120
 121 (defun nnlistserv-kk-wash-article ()
 122   (let ((case-fold-search t)
 123         (headers '(sent name email subject id))
 124         sent name email subject id)
 125     (nnweb-decode-entities)
 126     (while headers
 127       (goto-char (point-min))
 128       (re-search-forward (format "<!-- %s=\"\\([^\"]+\\)" (car headers) nil t))
 129       (set (pop headers) (match-string 1)))
 130     (goto-char (point-min))
 131     (search-forward "<!-- body" nil t)
 132     (delete-region (point-min) (progn (forward-line 1) (point)))
 133     (goto-char (point-max))
 134     (search-backward "<!-- body" nil t)
 135     (delete-region (point-max) (progn (beginning-of-line) (point)))
 136     (nnweb-remove-markup)
 137     (goto-char (point-min))
 138     (insert (format "From: %s <%s>\n" name email)
 139             (format "Subject: %s\n" subject)
 140             (format "Message-ID: %s\n" id)
 141             (format "Date: %s\n\n" sent))))
 142
 143 (defun nnlistserv-kk-search (search)
 144   (url-insert-file-contents
 145    (concat (format (nnweb-definition 'address) search)
 146            (nnweb-definition 'index)))
 147   t)
 148
 149 (defun nnlistserv-kk-identity (url)
 150   "Return an unique identifier based on URL."
 151   url)
 152
 153 (provide 'nnlistserv)
 154
 155 ;;; nnlistserv.el ends here