lisp/gnus/nnrss.el

   1 ;;; nnrss.el --- interfacing with RSS
   2
   3 ;; Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   4 ;;   2008, 2009, 2010  Free Software Foundation, Inc.
   5
   6 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
   7 ;; Keywords: RSS
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 ;; For Emacs < 22.2.
  29 (eval-and-compile
  30   (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
  31
  32 (eval-when-compile (require 'cl))
  33
  34 (require 'gnus)
  35 (require 'nnoo)
  36 (require 'nnmail)
  37 (require 'message)
  38 (require 'mm-util)
  39 (require 'gnus-util)
  40 (require 'time-date)
  41 (require 'rfc2231)
  42 (require 'mm-url)
  43 (require 'rfc2047)
  44 (require 'mml)
  45 (eval-when-compile
  46   (ignore-errors
  47    (require 'xml)))
  48 (eval '(require 'xml))
  49
  50 (nnoo-declare nnrss)
  51
  52 (defvoo nnrss-directory (nnheader-concat gnus-directory "rss/")
  53   "Where nnrss will save its files.")
  54
  55 (defvoo nnrss-ignore-article-fields '(slash:comments)
  56   "*List of fields that should be ignored when comparing RSS articles.
  57 Some RSS feeds update article fields during their lives, e.g. to
  58 indicate the number of comments or the number of times the
  59 articles have been seen.  However, if there is a difference
  60 between the local article and the distant one, the latter is
  61 considered to be new.  To avoid this and discard some fields, set
  62 this variable to the list of fields to be ignored.")
  63
  64 ;; (group max rss-url)
  65 (defvoo nnrss-server-data nil)
  66
  67 ;; (num timestamp url subject author date extra)
  68 (defvoo nnrss-group-data nil)
  69 (defvoo nnrss-group-max 0)
  70 (defvoo nnrss-group-min 1)
  71 (defvoo nnrss-group nil)
  72 (defvoo nnrss-group-hashtb (make-hash-table :test 'equal))
  73 (defvoo nnrss-status-string "")
  74
  75 (defconst nnrss-version "nnrss 1.0")
  76
  77 (defvar nnrss-group-alist '()
  78   "List of RSS addresses.")
  79
  80 (defvar nnrss-use-local nil)
  81
  82 (defvar nnrss-description-field 'X-Gnus-Description
  83   "Field name used for DESCRIPTION.
  84 To use the description in headers, put this name into `nnmail-extra-headers'.")
  85
  86 (defvar nnrss-url-field 'X-Gnus-Url
  87   "Field name used for URL.
  88 To use the description in headers, put this name into `nnmail-extra-headers'.")
  89
  90 (defvar nnrss-content-function nil
  91   "A function which is called in `nnrss-request-article'.
  92 The arguments are (ENTRY GROUP ARTICLE).
  93 ENTRY is the record of the current headline.  GROUP is the group name.
  94 ARTICLE is the article number of the current headline.")
  95
  96 (defvar nnrss-file-coding-system mm-universal-coding-system
  97   "*Coding system used when reading and writing files.
  98 If you run Gnus with various versions of Emacsen, the value of this
  99 variable should be the coding system that all those Emacsen support.
 100 Note that you have to regenerate all the nnrss groups if you change
 101 the value.  Moreover, you should be patient even if you are made to
 102 read the same articles twice, that arises for the difference of the
 103 versions of xml.el.")
 104
 105 (defvar nnrss-compatible-encoding-alist
 106   (delq nil (mapcar (lambda (elem)
 107                       (if (and (mm-coding-system-p (car elem))
 108                                (mm-coding-system-p (cdr elem)))
 109                           elem))
 110                     mm-charset-override-alist))
 111   "Alist of encodings and those supersets.
 112 The cdr of each element is used to decode data if it is available when
 113 the car is what the data specify as the encoding.  Or, the car is used
 114 for decoding when the cdr that the data specify is not available.")
 115
 116 (defvar nnrss-wash-html-in-text-plain-parts nil
 117   "*Non-nil means render text in text/plain parts as HTML.
 118 The function specified by the `mm-text-html-renderer' variable will be
 119 used to render text.  If it is nil, text will simply be folded.")
 120
 121 (nnoo-define-basics nnrss)
 122
 123 ;;; Interface functions
 124
 125 (defsubst nnrss-format-string (string)
 126   (gnus-replace-in-string string " *\n *" " "))
 127
 128 (defun nnrss-decode-group-name (group)
 129   (if (and group (mm-coding-system-p 'utf-8))
 130       (setq group (mm-decode-coding-string group 'utf-8))
 131     group))
 132
 133 (deffoo nnrss-retrieve-headers (articles &optional group server fetch-old)
 134   (setq group (nnrss-decode-group-name group))
 135   (nnrss-possibly-change-group group server)
 136   (let (e)
 137     (save-excursion
 138       (set-buffer nntp-server-buffer)
 139       (erase-buffer)
 140       (dolist (article articles)
 141         (if (setq e (assq article nnrss-group-data))
 142             (insert (number-to-string (car e)) "\t" ;; number
 143                     ;; subject
 144                     (or (nth 3 e) "")
 145                     "\t"
 146                     ;; from
 147                     (or (nth 4 e) "(nobody)")
 148                     "\t"
 149                     ;; date
 150                     (or (nth 5 e) "")
 151                     "\t"
 152                     ;; id
 153                     (format "<%d@%s.nnrss>" (car e) group)
 154                     "\t"
 155                     ;; refs
 156                     "\t"
 157                     ;; chars
 158                     "-1" "\t"
 159                     ;; lines
 160                     "-1" "\t"
 161                     ;; Xref
 162                     "" "\t"
 163                     (if (and (nth 6 e)
 164                              (memq nnrss-description-field
 165                                    nnmail-extra-headers))
 166                         (concat (symbol-name nnrss-description-field)
 167                                 ": "
 168                                 (nnrss-format-string (nth 6 e))
 169                                 "\t")
 170                       "")
 171                     (if (and (nth 2 e)
 172                              (memq nnrss-url-field
 173                                    nnmail-extra-headers))
 174                         (concat (symbol-name nnrss-url-field)
 175                                 ": "
 176                                 (nnrss-format-string (nth 2 e))
 177                                 "\t")
 178                       "")
 179                     "\n")))))
 180   'nov)
 181
 182 (deffoo nnrss-request-group (group &optional server dont-check)
 183   (setq group (nnrss-decode-group-name group))
 184   (nnheader-message 6 "nnrss: Requesting %s..." group)
 185   (nnrss-possibly-change-group group server)
 186   (prog1
 187       (if dont-check
 188           t
 189         (nnrss-check-group group server)
 190         (nnheader-report 'nnrss "Opened group %s" group)
 191         (nnheader-insert
 192          "211 %d %d %d %s\n" nnrss-group-max nnrss-group-min nnrss-group-max
 193          (prin1-to-string group)
 194          t))
 195     (nnheader-message 6 "nnrss: Requesting %s...done" group)))
 196
 197 (deffoo nnrss-close-group (group &optional server)
 198   t)
 199
 200 (defvar mm-text-html-renderer)
 201 (defvar mm-text-html-washer-alist)
 202
 203 (deffoo nnrss-request-article (article &optional group server buffer)
 204   (setq group (nnrss-decode-group-name group))
 205   (when (stringp article)
 206     (setq article (if (string-match "\\`<\\([0-9]+\\)@" article)
 207                       (string-to-number (match-string 1 article))
 208                     0)))
 209   (nnrss-possibly-change-group group server)
 210   (let ((e (assq article nnrss-group-data))
 211         (nntp-server-buffer (or buffer nntp-server-buffer))
 212         post err)
 213     (when e
 214       (with-current-buffer nntp-server-buffer
 215         (erase-buffer)
 216         (if group
 217             (insert "Newsgroups: " group "\n"))
 218         (if (nth 3 e)
 219             (insert "Subject: " (nth 3 e) "\n"))
 220         (if (nth 4 e)
 221             (insert "From: " (nth 4 e) "\n"))
 222         (if (nth 5 e)
 223             (insert "Date: " (nnrss-format-string (nth 5 e)) "\n"))
 224         (let ((header (buffer-string))
 225               (text (nth 6 e))
 226               (link (nth 2 e))
 227               (enclosure (nth 7 e))
 228               (comments (nth 8 e))
 229               (rfc2047-header-encoding-alist
 230                (if (mm-coding-system-p 'utf-8)
 231                    (cons '("Newsgroups" . utf-8)
 232                          rfc2047-header-encoding-alist)
 233                  rfc2047-header-encoding-alist))
 234               rfc2047-encode-encoded-words body fn)
 235           (when (or text link enclosure comments)
 236             (insert "\n")
 237             (insert "<#multipart type=alternative>\n"
 238                     "<#part type=\"text/plain\">\n")
 239             (setq body (point))
 240             (when text
 241               (insert text)
 242               (goto-char body)
 243               (if (and nnrss-wash-html-in-text-plain-parts
 244                        (progn
 245                          (require 'mm-view)
 246                          (setq fn (or (cdr (assq mm-text-html-renderer
 247                                                  mm-text-html-washer-alist))
 248                                       mm-text-html-renderer))))
 249                   (progn
 250                     (narrow-to-region body (point-max))
 251                     (if (functionp fn)
 252                         (funcall fn)
 253                       (apply (car fn) (cdr fn)))
 254                     (widen)
 255                     (goto-char body)
 256                     (re-search-forward "[^\t\n ]" nil t)
 257                     (beginning-of-line)
 258                     (delete-region body (point))
 259                     (goto-char (point-max))
 260                     (skip-chars-backward "\t\n ")
 261                     (end-of-line)
 262                     (delete-region (point) (point-max))
 263                     (insert "\n"))
 264                 (while (re-search-forward "\n+" nil t)
 265                   (replace-match " "))
 266                 (goto-char body)
 267                 ;; See `nnrss-check-group', which inserts "<br /><br />".
 268                 (when (search-forward "<br /><br />" nil t)
 269                   (if (eobp)
 270                       (replace-match "\n")
 271                     (replace-match "\n\n")))
 272                 (unless (eobp)
 273                   (let ((fill-column (default-value 'fill-column))
 274                         (window (get-buffer-window nntp-server-buffer)))
 275                     (when window
 276                       (setq fill-column
 277                             (max 1 (/ (* (window-width window) 7) 8))))
 278                     (fill-region (point) (point-max))
 279                     (goto-char (point-max))
 280                     ;; XEmacs version of `fill-region' inserts newline.
 281                     (unless (bolp)
 282                       (insert "\n")))))
 283               (when (or link enclosure)
 284                 (insert "\n")))
 285             (when link
 286               (insert link "\n"))
 287             (when enclosure
 288               (insert (car enclosure) " "
 289                       (nth 2 enclosure) " "
 290                       (nth 3 enclosure) "\n"))
 291             (when comments
 292               (insert comments "\n"))
 293             (setq body (buffer-substring body (point)))
 294             (insert "<#/part>\n"
 295                     "<#part type=\"text/html\">\n"
 296                     "<html><head></head><body>\n")
 297             (when text
 298               (insert text "\n"))
 299             (when link
 300               (insert "<p><a href=\"" link "\">link</a></p>\n"))
 301             (when enclosure
 302               (insert "<p><a href=\"" (car enclosure) "\">"
 303                       (cadr enclosure) "</a> " (nth 2 enclosure)
 304                       " " (nth 3 enclosure) "</p>\n"))
 305             (when comments
 306               (insert "<p><a href=\"" comments "\">comments</a></p>\n"))
 307             (insert "</body></html>\n"
 308                     "<#/part>\n"
 309                     "<#/multipart>\n"))
 310           (condition-case nil
 311               ;; Allow `mml-to-mime' to generate MIME article without
 312               ;; making inquiry to a user for unknown encoding.
 313               (let ((mml-confirmation-set
 314                      (cons 'unknown-encoding mml-confirmation-set)))
 315                 (mml-to-mime))
 316             (error
 317              (erase-buffer)
 318              (insert header
 319                      "Content-Type: text/plain; charset=gnus-decoded\n"
 320                      "Content-Transfer-Encoding: 8bit\n\n"
 321                      body)
 322              (nnheader-message
 323               3 "Warning - there might be invalid characters"))))
 324         (goto-char (point-min))
 325         (search-forward "\n\n")
 326         (forward-line -1)
 327         (insert (format "Message-ID: <%d@%s.nnrss>\n"
 328                         (car e)
 329                         (let ((rfc2047-encoding-type 'mime)
 330                               rfc2047-encode-max-chars)
 331                           (rfc2047-encode-string
 332                            (gnus-replace-in-string group "[\t\n ]+" "_")))))
 333         (when nnrss-content-function
 334           (funcall nnrss-content-function e group article))))
 335     (cond
 336      (err
 337       (nnheader-report 'nnrss err))
 338      ((not e)
 339       (nnheader-report 'nnrss "no such id: %d" article))
 340      (t
 341       (nnheader-report 'nnrss "article %s retrieved" (car e))
 342       ;; we return the article number.
 343       (cons nnrss-group (car e))))))
 344
 345 (deffoo nnrss-request-list (&optional server)
 346   (nnrss-possibly-change-group nil server)
 347   (nnrss-generate-active)
 348   t)
 349
 350 (deffoo nnrss-open-server (server &optional defs connectionless)
 351   (nnrss-read-server-data server)
 352   (nnoo-change-server 'nnrss server defs)
 353   t)
 354
 355 (deffoo nnrss-request-expire-articles
 356     (articles group &optional server force)
 357   (setq group (nnrss-decode-group-name group))
 358   (nnrss-possibly-change-group group server)
 359   (let (e days not-expirable changed)
 360     (dolist (art articles)
 361       (if (and (setq e (assq art nnrss-group-data))
 362                (nnmail-expired-article-p
 363                 group
 364                 (if (listp (setq days (nth 1 e))) days
 365                   (days-to-time (- days (time-to-days '(0 0)))))
 366                 force))
 367           (setq nnrss-group-data (delq e nnrss-group-data)
 368                 changed t)
 369         (push art not-expirable)))
 370     (if changed
 371         (nnrss-save-group-data group server))
 372     not-expirable))
 373
 374 (deffoo nnrss-request-delete-group (group &optional force server)
 375   (setq group (nnrss-decode-group-name group))
 376   (nnrss-possibly-change-group group server)
 377   (let (elem)
 378     ;; There may be two or more entries in `nnrss-group-alist' since
 379     ;; this function didn't delete them formerly.
 380     (while (setq elem (assoc group nnrss-group-alist))
 381       (setq nnrss-group-alist (delq elem nnrss-group-alist))))
 382   (setq nnrss-server-data
 383         (delq (assoc group nnrss-server-data) nnrss-server-data))
 384   (nnrss-save-server-data server)
 385   (ignore-errors
 386     (let ((file-name-coding-system nnmail-pathname-coding-system))
 387       (delete-file (nnrss-make-filename group server))))
 388   t)
 389
 390 (deffoo nnrss-request-list-newsgroups (&optional server)
 391   (nnrss-possibly-change-group nil server)
 392   (save-excursion
 393     (set-buffer nntp-server-buffer)
 394     (erase-buffer)
 395     (dolist (elem nnrss-group-alist)
 396       (if (third elem)
 397           (insert (car elem) "\t" (third elem) "\n"))))
 398   t)
 399
 400 (nnoo-define-skeleton nnrss)
 401
 402 ;;; Internal functions
 403 (eval-when-compile (defun xml-rpc-method-call (&rest args)))
 404
 405 (defun nnrss-get-encoding ()
 406   "Return an encoding attribute specified in the current xml contents.
 407 If `nnrss-compatible-encoding-alist' specifies the compatible encoding,
 408 it is used instead.  If the xml contents doesn't specify the encoding,
 409 return `utf-8' which is the default encoding for xml if it is available,
 410 otherwise return nil."
 411   (goto-char (point-min))
 412   (if (re-search-forward
 413        "<\\?[^>]*encoding=\\(?:\"\\([^\">]+\\)\"\\|'\\([^'>]+\\)'\\)"
 414        nil t)
 415       (let ((encoding (intern (downcase (or (match-string 1)
 416                                             (match-string 2))))))
 417         (or
 418          (mm-coding-system-p (cdr (assq encoding
 419                                         nnrss-compatible-encoding-alist)))
 420          (mm-coding-system-p encoding)
 421          (mm-coding-system-p (car (rassq encoding
 422                                          nnrss-compatible-encoding-alist)))))
 423     (mm-coding-system-p 'utf-8)))
 424
 425 (declare-function w3-parse-buffer "ext:w3-parse" (&optional buff))
 426
 427 (defun nnrss-fetch (url &optional local)
 428   "Fetch URL and put it in a the expected Lisp structure."
 429   (mm-with-unibyte-buffer
 430     ;;some versions of url.el need this to close the connection quickly
 431     (let (cs xmlform htmlform)
 432       ;; bit o' work necessary for w3 pre-cvs and post-cvs
 433       (if local
 434           (let ((coding-system-for-read 'binary))
 435             (insert-file-contents url))
 436         ;; FIXME: shouldn't binding `coding-system-for-read' be moved
 437         ;; to `mm-url-insert'?
 438         (let ((coding-system-for-read 'binary))
 439           (condition-case err
 440               (mm-url-insert url)
 441             (error (if (or debug-on-quit debug-on-error)
 442                        (signal (car err) (cdr err))
 443                      (message "nnrss: Failed to fetch %s" url))))))
 444       (nnheader-remove-cr-followed-by-lf)
 445       ;; Decode text according to the encoding attribute.
 446       (when (setq cs (nnrss-get-encoding))
 447         (insert (prog1
 448                     (mm-decode-coding-string (buffer-string) cs)
 449                   (erase-buffer)
 450                   (mm-enable-multibyte))))
 451       (goto-char (point-min))
 452
 453       ;; Because xml-parse-region can't deal with anything that isn't
 454       ;; xml and w3-parse-buffer can't deal with some xml, we have to
 455       ;; parse with xml-parse-region first and, if that fails, parse
 456       ;; with w3-parse-buffer.  Yuck.  Eventually, someone should find out
 457       ;; why w3-parse-buffer fails to parse some well-formed xml and
 458       ;; fix it.
 459
 460       (condition-case err1
 461           (setq xmlform (xml-parse-region (point-min) (point-max)))
 462         (error
 463          (condition-case err2
 464              (setq htmlform (caddar (w3-parse-buffer
 465                                      (current-buffer))))
 466            (error
 467             (message "\
 468 nnrss: %s: Not valid XML %s and w3-parse doesn't work %s"
 469                      url err1 err2)))))
 470       (if htmlform
 471           htmlform
 472         xmlform))))
 473
 474 (defun nnrss-possibly-change-group (&optional group server)
 475   (when (and server
 476              (not (nnrss-server-opened server)))
 477     (nnrss-open-server server))
 478   (when (and group (not (equal group nnrss-group)))
 479     (nnrss-read-group-data group server)
 480     (setq nnrss-group group)))
 481
 482 (defvar nnrss-extra-categories '(nnrss-snarf-moreover-categories))
 483
 484 (defun nnrss-generate-active ()
 485   (when (y-or-n-p "Fetch extra categories? ")
 486     (mapc 'funcall nnrss-extra-categories))
 487   (save-excursion
 488     (set-buffer nntp-server-buffer)
 489     (erase-buffer)
 490     (dolist (elem nnrss-group-alist)
 491       (insert (prin1-to-string (car elem)) " 0 1 y\n"))
 492     (dolist (elem nnrss-server-data)
 493       (unless (assoc (car elem) nnrss-group-alist)
 494         (insert (prin1-to-string (car elem)) " 0 1 y\n")))))
 495
 496 (autoload 'timezone-parse-date "timezone")
 497
 498 (defun nnrss-normalize-date (date)
 499   "Return a date string of DATE in the RFC822 style.
 500 This function handles the ISO 8601 date format described in
 501 <URL:http://www.w3.org/TR/NOTE-datetime>, and also the RFC822 style
 502 which RSS 2.0 allows."
 503   (let (case-fold-search vector year month day time zone cts given)
 504     (cond ((null date))                 ; do nothing for this case
 505           ;; if the date is just digits (unix time stamp):
 506           ((string-match "^[0-9]+$" date)
 507            (setq given (seconds-to-time (string-to-number date))))
 508           ;; RFC822
 509           ((string-match " [0-9]+ " date)
 510            (setq vector (timezone-parse-date date)
 511                  year (string-to-number (aref vector 0)))
 512            (when (>= year 1969)
 513              (setq month (string-to-number (aref vector 1))
 514                    day (string-to-number (aref vector 2)))
 515              (unless (>= (length (setq time (aref vector 3))) 3)
 516                (setq time "00:00:00"))
 517              (when (and (setq zone (aref vector 4))
 518                         (not (string-match "\\`[A-Z+-]" zone)))
 519                (setq zone nil))))
 520           ;; ISO 8601
 521           ((string-match
 522             (eval-when-compile
 523               (concat
 524                ;; 1. year
 525                "\\(199[0-9]\\|20[0-9][0-9]\\)"
 526                "\\(?:-"
 527                ;; 2. month
 528                "\\([01][0-9]\\)"
 529                "\\(?:-"
 530                ;; 3. day
 531                "\\([0-3][0-9]\\)"
 532                "\\)?\\)?\\(?:T"
 533                ;; 4. hh:mm
 534                "\\([012][0-9]:[0-5][0-9]\\)"
 535                "\\(?:"
 536                ;; 5. :ss
 537                "\\(:[0-5][0-9]\\)"
 538                "\\(?:\\.[0-9]+\\)?\\)?\\)?"
 539                ;; 6+7,8,9. zone
 540                "\\(?:\\(?:\\([+-][012][0-9]\\):\\([0-5][0-9]\\)\\)"
 541                "\\|\\([+-][012][0-9][0-5][0-9]\\)"
 542                "\\|\\(Z\\)\\)?"))
 543             date)
 544            (setq year (string-to-number (match-string 1 date))
 545                  month (string-to-number (or (match-string 2 date) "1"))
 546                  day (string-to-number (or (match-string 3 date) "1"))
 547                  time (if (match-beginning 5)
 548                           (substring date (match-beginning 4) (match-end 5))
 549                         (concat (or (match-string 4 date) "00:00") ":00"))
 550                  zone (cond ((match-beginning 6)
 551                              (concat (match-string 6 date)
 552                                      (match-string 7 date)))
 553                             ((match-beginning 9) ;; Z
 554                              "+0000")
 555                             (t ;; nil if zone is not provided.
 556                              (match-string 8 date))))))
 557     (if month
 558         (progn
 559           (setq cts (current-time-string (encode-time 0 0 0 day month year)))
 560           (format "%s, %02d %s %04d %s%s"
 561                   (substring cts 0 3) day (substring cts 4 7) year time
 562                   (if zone
 563                       (concat " " zone)
 564                     "")))
 565       (message-make-date given))))
 566
 567 ;;; data functions
 568
 569 (defun nnrss-read-server-data (server)
 570   (setq nnrss-server-data nil)
 571   (let ((file (nnrss-make-filename "nnrss" server))
 572         (file-name-coding-system nnmail-pathname-coding-system))
 573     (when (file-exists-p file)
 574       ;; In Emacs 21.3 and earlier, `load' doesn't support non-ASCII
 575       ;; file names.  So, we use `insert-file-contents' instead.
 576       (mm-with-multibyte-buffer
 577         (let ((coding-system-for-read nnrss-file-coding-system))
 578           (insert-file-contents file)
 579           (eval-region (point-min) (point-max)))))))
 580
 581 (defun nnrss-save-server-data (server)
 582   (gnus-make-directory nnrss-directory)
 583   (let ((coding-system-for-write nnrss-file-coding-system)
 584         (file-name-coding-system nnmail-pathname-coding-system))
 585     (with-temp-file (nnrss-make-filename "nnrss" server)
 586       (insert (format ";; -*- coding: %s; -*-\n"
 587                       nnrss-file-coding-system))
 588       (gnus-prin1 `(setq nnrss-group-alist ',nnrss-group-alist))
 589       (insert "\n")
 590       (gnus-prin1 `(setq nnrss-server-data ',nnrss-server-data)))))
 591
 592 (defun nnrss-read-group-data (group server)
 593   (setq nnrss-group-data nil)
 594   (if (hash-table-p nnrss-group-hashtb)
 595       (clrhash nnrss-group-hashtb)
 596     (setq nnrss-group-hashtb (make-hash-table :test 'equal)))
 597   (let ((pair (assoc group nnrss-server-data)))
 598     (setq nnrss-group-max (or (cadr pair) 0))
 599     (setq nnrss-group-min (+ nnrss-group-max 1)))
 600   (let ((file (nnrss-make-filename group server))
 601         (file-name-coding-system nnmail-pathname-coding-system))
 602     (when (file-exists-p file)
 603       ;; In Emacs 21.3 and earlier, `load' doesn't support non-ASCII
 604       ;; file names.  So, we use `insert-file-contents' instead.
 605       (mm-with-multibyte-buffer
 606         (let ((coding-system-for-read nnrss-file-coding-system))
 607           (insert-file-contents file)
 608           (eval-region (point-min) (point-max))))
 609       (dolist (e nnrss-group-data)
 610         (puthash (nth 9 e) t nnrss-group-hashtb)
 611         (when (and (car e) (> nnrss-group-min (car e)))
 612           (setq nnrss-group-min (car e)))
 613         (when (and (car e) (< nnrss-group-max (car e)))
 614           (setq nnrss-group-max (car e)))))))
 615
 616 (defun nnrss-save-group-data (group server)
 617   (gnus-make-directory nnrss-directory)
 618   (let ((coding-system-for-write nnrss-file-coding-system)
 619         (file-name-coding-system nnmail-pathname-coding-system))
 620     (with-temp-file (nnrss-make-filename group server)
 621       (insert (format ";; -*- coding: %s; -*-\n"
 622                       nnrss-file-coding-system))
 623       (gnus-prin1 `(setq nnrss-group-data ',nnrss-group-data)))))
 624
 625 (defun nnrss-make-filename (name server)
 626   (expand-file-name
 627    (nnrss-translate-file-chars
 628     (concat name
 629             (and server
 630                  (not (equal server ""))
 631                  "-")
 632             server
 633             ".el"))
 634    nnrss-directory))
 635
 636 (gnus-add-shutdown 'nnrss-close 'gnus)
 637
 638 (defun nnrss-close ()
 639   "Clear internal nnrss variables."
 640   (setq nnrss-group-data nil
 641         nnrss-server-data nil
 642         nnrss-group-hashtb nil
 643         nnrss-group-alist nil))
 644
 645 ;;; URL interface
 646
 647 (defun nnrss-no-cache (url)
 648   "")
 649
 650 (defun nnrss-insert-w3 (url)
 651   (mm-with-unibyte-current-buffer
 652     (condition-case err
 653         (mm-url-insert url)
 654       (error (if (or debug-on-quit debug-on-error)
 655                  (signal (car err) (cdr err))
 656                (message "nnrss: Failed to fetch %s" url))))))
 657
 658 (defun nnrss-decode-entities-string (string)
 659   (if string
 660       (mm-with-multibyte-buffer
 661         (insert string)
 662         (mm-url-decode-entities-nbsp)
 663         (buffer-string))))
 664
 665 (defalias 'nnrss-insert 'nnrss-insert-w3)
 666
 667 (defun nnrss-mime-encode-string (string)
 668   (mm-with-multibyte-buffer
 669     (insert string)
 670     (mm-url-decode-entities-nbsp)
 671     (goto-char (point-min))
 672     (while (re-search-forward "[\t\n ]+" nil t)
 673       (replace-match " "))
 674     (goto-char (point-min))
 675     (skip-chars-forward " ")
 676     (delete-region (point-min) (point))
 677     (goto-char (point-max))
 678     (skip-chars-forward " ")
 679     (delete-region (point) (point-max))
 680     (let ((rfc2047-encoding-type 'mime)
 681           rfc2047-encode-max-chars)
 682       (rfc2047-encode-region (point-min) (point-max)))
 683     (goto-char (point-min))
 684     (while (search-forward "\n" nil t)
 685       (delete-char -1))
 686     (buffer-string)))
 687
 688 ;;; Snarf functions
 689 (defun nnrss-make-hash-index (item)
 690   (gnus-message 9 "nnrss: Making hash index of %s" (gnus-prin1-to-string item))
 691   (setq item (gnus-remove-if
 692               (lambda (field)
 693                 (when (listp field)
 694                   (memq (car field) nnrss-ignore-article-fields)))
 695               item))
 696   (md5 (gnus-prin1-to-string item)
 697        nil nil
 698        nnrss-file-coding-system))
 699
 700 (defun nnrss-check-group (group server)
 701   (let (file xml subject url extra changed author date feed-subject
 702              enclosure comments rss-ns rdf-ns content-ns dc-ns
 703              hash-index)
 704     (if (and nnrss-use-local
 705              (file-exists-p (setq file (expand-file-name
 706                                         (nnrss-translate-file-chars
 707                                          (concat group ".xml"))
 708                                         nnrss-directory))))
 709         (setq xml (nnrss-fetch file t))
 710       (setq url (or (nth 2 (assoc group nnrss-server-data))
 711                     (second (assoc group nnrss-group-alist))))
 712       (unless url
 713         (setq url
 714               (cdr
 715                (assoc 'href
 716                       (nnrss-discover-feed
 717                        (read-string
 718                         (format "URL to search for %s: " group) "http://")))))
 719         (let ((pair (assoc group nnrss-server-data)))
 720           (if pair
 721               (setcdr (cdr pair) (list url))
 722             (push (list group nnrss-group-max url) nnrss-server-data)))
 723         (setq changed t))
 724       (setq xml (nnrss-fetch url)))
 725     ;; See
 726     ;; http://feeds.archive.org/validator/docs/howto/declare_namespaces.html
 727     ;; for more RSS namespaces.
 728     (setq dc-ns (nnrss-get-namespace-prefix xml "http://purl.org/dc/elements/1.1/")
 729           rdf-ns (nnrss-get-namespace-prefix xml "http://www.w3.org/1999/02/22-rdf-syntax-ns#")
 730           rss-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/")
 731           content-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/modules/content/"))
 732     (dolist (item (nreverse (nnrss-find-el (intern (concat rss-ns "item")) xml)))
 733       (when (and (listp item)
 734                  (string= (concat rss-ns "item") (car item))
 735                  (progn (setq hash-index (nnrss-make-hash-index item))
 736                         (not (gethash hash-index nnrss-group-hashtb))))
 737         (setq subject (nnrss-node-text rss-ns 'title item))
 738         (setq url (nnrss-decode-entities-string
 739                    (nnrss-node-text rss-ns 'link (cddr item))))
 740         (setq extra (or (nnrss-node-text content-ns 'encoded item)
 741                         (nnrss-node-text rss-ns 'description item)))
 742         (if (setq feed-subject (nnrss-node-text dc-ns 'subject item))
 743             (setq extra (concat feed-subject "<br /><br />" extra)))
 744         (setq author (or (nnrss-node-text rss-ns 'author item)
 745                          (nnrss-node-text dc-ns 'creator item)
 746                          (nnrss-node-text dc-ns 'contributor item)))
 747         (setq date (nnrss-normalize-date
 748                     (or (nnrss-node-text dc-ns 'date item)
 749                         (nnrss-node-text rss-ns 'pubDate item))))
 750         (setq comments (nnrss-node-text rss-ns 'comments item))
 751         (when (setq enclosure (cadr (assq (intern (concat rss-ns "enclosure")) item)))
 752           (let ((url (cdr (assq 'url enclosure)))
 753                 (len (cdr (assq 'length enclosure)))
 754                 (type (cdr (assq 'type enclosure)))
 755                 (name))
 756             (setq len
 757                   (if (and len (integerp (setq len (string-to-number len))))
 758                       ;; actually already in `ls-lisp-format-file-size' but
 759                       ;; probably not worth to require it for one function
 760                       (do ((size (/ len 1.0) (/ size 1024.0))
 761                            (post-fixes (list "" "k" "M" "G" "T" "P" "E")
 762                                        (cdr post-fixes)))
 763                           ((< size 1024)
 764                            (format "%.1f%s" size (car post-fixes))))
 765                     "0"))
 766             (setq url (or url ""))
 767             (setq name (if (string-match "/\\([^/]*\\)$" url)
 768                            (match-string 1 url)
 769                          "file"))
 770             (setq type (or type ""))
 771             (setq enclosure (list url name len type))))
 772         (push
 773          (list
 774           (incf nnrss-group-max)
 775           (current-time)
 776           url
 777           (and subject (nnrss-mime-encode-string subject))
 778           (and author (nnrss-mime-encode-string author))
 779           date
 780           (and extra (nnrss-decode-entities-string extra))
 781           enclosure
 782           comments
 783           hash-index)
 784          nnrss-group-data)
 785         (puthash hash-index t nnrss-group-hashtb)
 786         (setq changed t))
 787       (setq extra nil))
 788     (when changed
 789       (nnrss-save-group-data group server)
 790       (let ((pair (assoc group nnrss-server-data)))
 791         (if pair
 792             (setcar (cdr pair) nnrss-group-max)
 793           (push (list group nnrss-group-max) nnrss-server-data)))
 794       (nnrss-save-server-data server))))
 795
 796 (declare-function gnus-group-make-rss-group "gnus-group" (&optional url))
 797
 798 (defun nnrss-opml-import (opml-file)
 799   "OPML subscriptions import.
 800 Read the file and attempt to subscribe to each Feed in the file."
 801   (interactive "fImport file: ")
 802   (mapc
 803    (lambda (node)
 804      (let ((xmlurl (cdr (assq 'xmlUrl (cadr node)))))
 805        (when (and xmlurl
 806                   (not (string-match "\\`[\t ]*\\'" xmlurl))
 807                   (prog1
 808                       (y-or-n-p (format "Subscribe to %s " xmlurl))
 809                     (message "")))
 810          (condition-case err
 811              (progn
 812                (gnus-group-make-rss-group xmlurl)
 813                (forward-line 1))
 814            (error
 815             (message
 816              "Failed to subscribe to %s (%s); type any key to continue: "
 817              xmlurl
 818              (error-message-string err))
 819             (let ((echo-keystrokes 0))
 820               (read-char)))))))
 821    (nnrss-find-el 'outline
 822                   (mm-with-multibyte-buffer
 823                     (insert-file-contents opml-file)
 824                     (xml-parse-region (point-min) (point-max))))))
 825
 826 (defun nnrss-opml-export ()
 827   "OPML subscription export.
 828 Export subscriptions to a buffer in OPML Format."
 829   (interactive)
 830   (with-current-buffer (get-buffer-create "*OPML Export*")
 831     (mm-set-buffer-file-coding-system 'utf-8)
 832     (insert "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
 833             "<!-- OPML generated by Emacs Gnus' nnrss.el -->\n"
 834             "<opml version=\"1.1\">\n"
 835             "  <head>\n"
 836             "    <title>mySubscriptions</title>\n"
 837             "    <dateCreated>" (format-time-string "%a, %d %b %Y %T %z")
 838             "</dateCreated>\n"
 839             "    <ownerEmail>" user-mail-address "</ownerEmail>\n"
 840             "    <ownerName>" (user-full-name) "</ownerName>\n"
 841             "  </head>\n"
 842             "  <body>\n")
 843     (dolist (sub nnrss-group-alist)
 844       (insert "    <outline text=\"" (car sub)
 845               "\" xmlUrl=\"" (cadr sub) "\"/>\n"))
 846     (insert "  </body>\n"
 847             "</opml>\n"))
 848   (pop-to-buffer "*OPML Export*")
 849   (when (fboundp 'sgml-mode)
 850     (sgml-mode)))
 851
 852 (defun nnrss-generate-download-script ()
 853   "Generate a download script in the current buffer.
 854 It is useful when `(setq nnrss-use-local t)'."
 855   (interactive)
 856   (insert "#!/bin/sh\n")
 857   (insert "WGET=wget\n")
 858   (insert "RSSDIR='" (expand-file-name nnrss-directory) "'\n")
 859   (dolist (elem nnrss-server-data)
 860     (let ((url (or (nth 2 elem)
 861                    (second (assoc (car elem) nnrss-group-alist)))))
 862       (insert "$WGET -q -O \"$RSSDIR\"/'"
 863               (nnrss-translate-file-chars (concat (car elem) ".xml"))
 864               "' '" url "'\n"))))
 865
 866 (defun nnrss-translate-file-chars (name)
 867   (let ((nnheader-file-name-translation-alist
 868          (append nnheader-file-name-translation-alist '((?' . ?_)))))
 869     (nnheader-translate-file-chars name)))
 870
 871 (defvar nnrss-moreover-url
 872   "http://w.moreover.com/categories/category_list_rss.html"
 873   "The url of moreover.com categories.")
 874
 875 (defun nnrss-snarf-moreover-categories ()
 876   "Snarf RSS links from moreover.com."
 877   (interactive)
 878   (let (category name url changed)
 879     (with-temp-buffer
 880       (nnrss-insert nnrss-moreover-url)
 881       (goto-char (point-min))
 882       (while (re-search-forward
 883               "<a name=\"\\([^\"]+\\)\">\\|<a href=\"\\(http://[^\"]*moreover\\.com[^\"]+page\\?c=\\([^\"&]+\\)&o=rss\\)" nil t)
 884         (if (match-string 1)
 885             (setq category (match-string 1))
 886           (setq url (match-string 2)
 887                 name (mm-url-decode-entities-string
 888                       (rfc2231-decode-encoded-string
 889                        (match-string 3))))
 890           (if category
 891               (setq name (concat category "." name)))
 892           (unless (assoc name nnrss-server-data)
 893             (setq changed t)
 894             (push (list name 0 url) nnrss-server-data)))))
 895     (if changed
 896         (nnrss-save-server-data ""))))
 897
 898 (defun nnrss-node-text (namespace local-name element)
 899   (let* ((node (assq (intern (concat namespace (symbol-name local-name)))
 900                      element))
 901          (text (if (and node (listp node))
 902                    (nnrss-node-just-text node)
 903                  node))
 904          (cleaned-text (if text
 905                            (gnus-replace-in-string
 906                             (gnus-replace-in-string
 907                              text "^[\000-\037\177]+\\|^ +\\| +$" "")
 908                             "\r\n" "\n"))))
 909     (if (string-equal "" cleaned-text)
 910         nil
 911       cleaned-text)))
 912
 913 (defun nnrss-node-just-text (node)
 914   (if (and node (listp node))
 915       (mapconcat 'nnrss-node-just-text (cddr node) " ")
 916     node))
 917
 918 (defun nnrss-find-el (tag data &optional found-list)
 919   "Find the all matching elements in the data.
 920 Careful with this on large documents!"
 921   (when (consp data)
 922     (dolist (bit data)
 923       (when (car-safe bit)
 924         (when (equal tag (car bit))
 925           ;; Old xml.el may return a list of string.
 926           (when (and (consp (caddr bit))
 927                      (stringp (caaddr bit)))
 928             (setcar (cddr bit) (caaddr bit)))
 929           (setq found-list
 930                 (append found-list
 931                         (list bit))))
 932         (if (and (consp (car-safe (caddr bit)))
 933                  (not (stringp (caddr bit))))
 934             (setq found-list
 935                   (append found-list
 936                           (nnrss-find-el
 937                            tag (caddr bit))))
 938           (setq found-list
 939                 (append found-list
 940                         (nnrss-find-el
 941                          tag (cddr bit))))))))
 942   found-list)
 943
 944 (defun nnrss-rsslink-p (el)
 945   "Test if the element we are handed is an RSS autodiscovery link."
 946   (and (eq (car-safe el) 'link)
 947        (string-equal (cdr (assoc 'rel (cadr el))) "alternate")
 948        (or (string-equal (cdr (assoc 'type (cadr el)))
 949                          "application/rss+xml")
 950            (string-equal (cdr (assoc 'type (cadr el))) "text/xml"))))
 951
 952 (defun nnrss-get-rsslinks (data)
 953   "Extract the <link> elements that are links to RSS from the parsed data."
 954   (delq nil (mapcar
 955              (lambda (el)
 956                (if (nnrss-rsslink-p el) el))
 957              (nnrss-find-el 'link data))))
 958
 959 (defun nnrss-extract-hrefs (data)
 960   "Recursively extract hrefs from a page's source.
 961 DATA should be the output of `xml-parse-region' or
 962 `w3-parse-buffer'."
 963   (mapcar (lambda (ahref)
 964             (cdr (assoc 'href (cadr ahref))))
 965           (nnrss-find-el 'a data)))
 966
 967 (defmacro nnrss-match-macro (base-uri item onsite-list offsite-list)
 968   `(cond ((or (string-match (concat "^" ,base-uri) ,item)
 969               (not (string-match "://" ,item)))
 970           (setq ,onsite-list (append ,onsite-list (list ,item))))
 971          (t (setq ,offsite-list (append ,offsite-list (list ,item))))))
 972
 973 (defun nnrss-order-hrefs (base-uri hrefs)
 974   "Given a list of hrefs, sort them using the following priorities:
 975   1. links ending in .rss
 976   2. links ending in .rdf
 977   3. links ending in .xml
 978   4. links containing the above
 979   5. offsite links
 980
 981 BASE-URI is used to determine the location of the links and
 982 whether they are `offsite' or `onsite'."
 983   (let (rss-onsite-end  rdf-onsite-end  xml-onsite-end
 984         rss-onsite-in   rdf-onsite-in   xml-onsite-in
 985         rss-offsite-end rdf-offsite-end xml-offsite-end
 986         rss-offsite-in rdf-offsite-in xml-offsite-in)
 987     (dolist (href hrefs)
 988       (cond ((null href))
 989             ((string-match "\\.rss$" href)
 990              (nnrss-match-macro
 991               base-uri href rss-onsite-end rss-offsite-end))
 992             ((string-match "\\.rdf$" href)
 993              (nnrss-match-macro
 994               base-uri href rdf-onsite-end rdf-offsite-end))
 995             ((string-match "\\.xml$" href)
 996              (nnrss-match-macro
 997               base-uri href xml-onsite-end xml-offsite-end))
 998             ((string-match "rss" href)
 999              (nnrss-match-macro
1000               base-uri href rss-onsite-in rss-offsite-in))
1001             ((string-match "rdf" href)
1002              (nnrss-match-macro
1003               base-uri href rdf-onsite-in rdf-offsite-in))
1004             ((string-match "xml" href)
1005              (nnrss-match-macro
1006               base-uri href xml-onsite-in xml-offsite-in))))
1007     (append
1008      rss-onsite-end  rdf-onsite-end  xml-onsite-end
1009      rss-onsite-in   rdf-onsite-in   xml-onsite-in
1010      rss-offsite-end rdf-offsite-end xml-offsite-end
1011      rss-offsite-in rdf-offsite-in xml-offsite-in)))
1012
1013 (defun nnrss-discover-feed (url)
1014   "Given a page, find an RSS feed using Mark Pilgrim's
1015 `ultra-liberal rss locator' (http://diveintomark.org/2002/08/15.html)."
1016
1017   (let ((parsed-page (nnrss-fetch url)))
1018
1019 ;;    1. if this url is the rss, use it.
1020     (if (nnrss-rss-p parsed-page)
1021         (let ((rss-ns (nnrss-get-namespace-prefix parsed-page "http://purl.org/rss/1.0/")))
1022           (nnrss-rss-title-description rss-ns parsed-page url))
1023
1024 ;;    2. look for the <link rel="alternate"
1025 ;;    type="application/rss+xml" and use that if it is there.
1026       (let ((links (nnrss-get-rsslinks parsed-page)))
1027         (if links
1028             (let* ((xml (nnrss-fetch
1029                          (cdr (assoc 'href (cadar links)))))
1030                    (rss-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/")))
1031               (nnrss-rss-title-description rss-ns xml (cdr (assoc 'href (cadar links)))))
1032
1033 ;;    3. look for links on the site in the following order:
1034 ;;       - onsite links ending in .rss, .rdf, or .xml
1035 ;;       - onsite links containing any of the above
1036 ;;       - offsite links ending in .rss, .rdf, or .xml
1037 ;;       - offsite links containing any of the above
1038           (let* ((base-uri (progn (string-match ".*://[^/]+/?" url)
1039                                   (match-string 0 url)))
1040                  (hrefs (nnrss-order-hrefs
1041                          base-uri (nnrss-extract-hrefs parsed-page)))
1042                  (rss-link nil))
1043             (while (and (eq rss-link nil) (not (eq hrefs nil)))
1044               (let ((href-data (nnrss-fetch (car hrefs))))
1045                 (if (nnrss-rss-p href-data)
1046                     (let* ((rss-ns (nnrss-get-namespace-prefix href-data "http://purl.org/rss/1.0/")))
1047                       (setq rss-link (nnrss-rss-title-description
1048                                       rss-ns href-data (car hrefs))))
1049                   (setq hrefs (cdr hrefs)))))
1050             (if rss-link rss-link
1051
1052 ;;    4. check syndic8
1053               (nnrss-find-rss-via-syndic8 url))))))))
1054
1055 (defun nnrss-find-rss-via-syndic8 (url)
1056   "Query syndic8 for the rss feeds it has for URL."
1057   (if (not (locate-library "xml-rpc"))
1058       (progn
1059         (message "XML-RPC is not available... not checking Syndic8.")
1060         nil)
1061     (require 'xml-rpc)
1062     (let ((feedid (xml-rpc-method-call
1063                    "http://www.syndic8.com/xmlrpc.php"
1064                    'syndic8.FindSites
1065                    url)))
1066       (when feedid
1067         (let* ((feedinfo (xml-rpc-method-call
1068                           "http://www.syndic8.com/xmlrpc.php"
1069                           'syndic8.GetFeedInfo
1070                           feedid))
1071                (urllist
1072                 (delq nil
1073                       (mapcar
1074                        (lambda (listinfo)
1075                          (if (string-equal
1076                               (cdr (assoc "status" listinfo))
1077                               "Syndicated")
1078                              (cons
1079                               (cdr (assoc "sitename" listinfo))
1080                               (list
1081                                (cons 'title
1082                                      (cdr (assoc
1083                                            "sitename" listinfo)))
1084                                (cons 'href
1085                                      (cdr (assoc
1086                                            "dataurl" listinfo)))))))
1087                        feedinfo))))
1088           (if (not (> (length urllist) 1))
1089               (cdar urllist)
1090             (let ((completion-ignore-case t)
1091                   (selection
1092                    (mapcar (lambda (listinfo)
1093                              (cons (cdr (assoc "sitename" listinfo))
1094                                    (string-to-number
1095                                     (cdr (assoc "feedid" listinfo)))))
1096                            feedinfo)))
1097               (cdr (assoc
1098                     (completing-read
1099                      "Multiple feeds found.  Select one: "
1100                      selection nil t) urllist)))))))))
1101
1102 (defun nnrss-rss-p (data)
1103   "Test if DATA is an RSS feed.
1104 Simply ensures that the first element is rss or rdf."
1105   (or (eq (caar data) 'rss)
1106       (eq (caar data) 'rdf:RDF)))
1107
1108 (defun nnrss-rss-title-description (rss-namespace data url)
1109   "Return the title of an RSS feed."
1110   (if (nnrss-rss-p data)
1111       (let ((description (intern (concat rss-namespace "description")))
1112             (title (intern (concat rss-namespace "title")))
1113             (channel (nnrss-find-el (intern (concat rss-namespace "channel"))
1114                                     data)))
1115         (list
1116          (cons 'description (caddr (nth 0 (nnrss-find-el description channel))))
1117          (cons 'title (caddr (nth 0 (nnrss-find-el title channel))))
1118          (cons 'href url)))))
1119
1120 (defun nnrss-get-namespace-prefix (el uri)
1121   "Given EL (containing a parsed element) and URI (containing a string
1122 that gives the URI for which you want to retrieve the namespace
1123 prefix), return the prefix."
1124   (let* ((prefix (car (rassoc uri (cadar el))))
1125          (nslist (if prefix
1126                      (split-string (symbol-name prefix) ":")))
1127          (ns (cond ((eq (length nslist) 1) ; no prefix given
1128                     "")
1129                    ((eq (length nslist) 2) ; extract prefix
1130                     (cadr nslist)))))
1131     (if (and ns (not (string= ns "")))
1132         (concat ns ":")
1133       ns)))
1134
1135 (provide 'nnrss)
1136
1137 ;; arch-tag: 12910c07-0cdf-44fb-8d2c-416ded64c267
1138 ;;; nnrss.el ends here