;;; nnrss.el --- interfacing with RSS
-;; Copyright (C) 2001, 2002, 2003, 2004, 2005,
-;; 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+;; 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;; Keywords: RSS
;; 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 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 3 of the License, 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.
+;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
+;; For Emacs < 22.2.
+(eval-and-compile
+ (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
+
(eval-when-compile (require 'cl))
(require 'gnus)
(defvoo nnrss-directory (nnheader-concat gnus-directory "rss/")
"Where nnrss will save its files.")
+(defvoo nnrss-ignore-article-fields '(slash:comments)
+ "*List of fields that should be ignored when comparing RSS articles.
+Some RSS feeds update article fields during their lives, e.g. to
+indicate the number of comments or the number of times the
+articles have been seen. However, if there is a difference
+between the local article and the distant one, the latter is
+considered to be new. To avoid this and discard some fields, set
+this variable to the list of fields to be ignored.")
+
;; (group max rss-url)
(defvoo nnrss-server-data nil)
ARTICLE is the article number of the current headline.")
(defvar nnrss-file-coding-system mm-universal-coding-system
- "Coding system used when reading and writing files.")
+ "*Coding system used when reading and writing files.
+If you run Gnus with various versions of Emacsen, the value of this
+variable should be the coding system that all those Emacsen support.
+Note that you have to regenerate all the nnrss groups if you change
+the value. Moreover, you should be patient even if you are made to
+read the same articles twice, that arises for the difference of the
+versions of xml.el.")
(defvar nnrss-compatible-encoding-alist
(delq nil (mapcar (lambda (elem)
(deffoo nnrss-close-group (group &optional server)
t)
-(eval-when-compile
- (defvar mm-text-html-renderer)
- (defvar mm-text-html-washer-alist))
+(defvar mm-text-html-renderer)
+(defvar mm-text-html-washer-alist)
(deffoo nnrss-request-article (article &optional group server buffer)
(setq group (nnrss-decode-group-name group))
(link (nth 2 e))
(enclosure (nth 7 e))
(comments (nth 8 e))
- ;; Enable encoding of Newsgroups header in XEmacs.
- (default-enable-multibyte-characters t)
(rfc2047-header-encoding-alist
(if (mm-coding-system-p 'utf-8)
(cons '("Newsgroups" . utf-8)
(replace-match "\n")
(replace-match "\n\n")))
(unless (eobp)
- (let ((fill-column default-fill-column)
+ (let ((fill-column (default-value 'fill-column))
(window (get-buffer-window nntp-server-buffer)))
(when window
(setq fill-column
"<#/part>\n"
"<#/multipart>\n"))
(condition-case nil
- (mml-to-mime)
+ ;; Allow `mml-to-mime' to generate MIME article without
+ ;; making inquiry to a user for unknown encoding.
+ (let ((mml-confirmation-set
+ (cons 'unknown-encoding mml-confirmation-set)))
+ (mml-to-mime))
(error
(erase-buffer)
(insert header
(delq (assoc group nnrss-server-data) nnrss-server-data))
(nnrss-save-server-data server)
(ignore-errors
- (delete-file (nnrss-make-filename group server)))
+ (let ((file-name-coding-system nnmail-pathname-coding-system))
+ (delete-file (nnrss-make-filename group server))))
t)
(deffoo nnrss-request-list-newsgroups (&optional server)
nnrss-compatible-encoding-alist)))))
(mm-coding-system-p 'utf-8)))
+(declare-function w3-parse-buffer "ext:w3-parse" (&optional buff))
+
(defun nnrss-fetch (url &optional local)
"Fetch URL and put it in a the expected Lisp structure."
(mm-with-unibyte-buffer
- ;;some CVS versions of url.el need this to close the connection quickly
+ ;;some versions of url.el need this to close the connection quickly
(let (cs xmlform htmlform)
;; bit o' work necessary for w3 pre-cvs and post-cvs
(if local
(unless (assoc (car elem) nnrss-group-alist)
(insert (prin1-to-string (car elem)) " 0 1 y\n")))))
-(eval-and-compile (autoload 'timezone-parse-date "timezone"))
+(autoload 'timezone-parse-date "timezone")
(defun nnrss-normalize-date (date)
"Return a date string of DATE in the RFC822 style.
This function handles the ISO 8601 date format described in
-<URL:http://www.w3.org/TR/NOTE-datetime>, and also the RFC822 style
+URL `http://www.w3.org/TR/NOTE-datetime', and also the RFC822 style
which RSS 2.0 allows."
- (let (case-fold-search vector year month day time zone cts)
- (cond ((null date))
+ (let (case-fold-search vector year month day time zone cts given)
+ (cond ((null date)) ; do nothing for this case
+ ;; if the date is just digits (unix time stamp):
+ ((string-match "^[0-9]+$" date)
+ (setq given (seconds-to-time (string-to-number date))))
;; RFC822
((string-match " [0-9]+ " date)
(setq vector (timezone-parse-date date)
(if zone
(concat " " zone)
"")))
- (message-make-date))))
+ (message-make-date given))))
;;; data functions
(defun nnrss-read-server-data (server)
(setq nnrss-server-data nil)
- (let ((file (nnrss-make-filename "nnrss" server)))
+ (let ((file (nnrss-make-filename "nnrss" server))
+ (file-name-coding-system nnmail-pathname-coding-system))
(when (file-exists-p file)
;; In Emacs 21.3 and earlier, `load' doesn't support non-ASCII
;; file names. So, we use `insert-file-contents' instead.
(mm-with-multibyte-buffer
- (let ((coding-system-for-read nnrss-file-coding-system)
- (file-name-coding-system nnmail-pathname-coding-system))
+ (let ((coding-system-for-read nnrss-file-coding-system))
(insert-file-contents file)
(eval-region (point-min) (point-max)))))))
(let ((pair (assoc group nnrss-server-data)))
(setq nnrss-group-max (or (cadr pair) 0))
(setq nnrss-group-min (+ nnrss-group-max 1)))
- (let ((file (nnrss-make-filename group server)))
+ (let ((file (nnrss-make-filename group server))
+ (file-name-coding-system nnmail-pathname-coding-system))
(when (file-exists-p file)
;; In Emacs 21.3 and earlier, `load' doesn't support non-ASCII
;; file names. So, we use `insert-file-contents' instead.
(mm-with-multibyte-buffer
- (let ((coding-system-for-read nnrss-file-coding-system)
- (file-name-coding-system nnmail-pathname-coding-system))
+ (let ((coding-system-for-read nnrss-file-coding-system))
(insert-file-contents file)
(eval-region (point-min) (point-max))))
(dolist (e nnrss-group-data)
(rfc2047-encode-region (point-min) (point-max)))
(goto-char (point-min))
(while (search-forward "\n" nil t)
- (delete-backward-char 1))
+ (delete-char -1))
(buffer-string)))
;;; Snarf functions
+(defun nnrss-make-hash-index (item)
+ (gnus-message 9 "nnrss: Making hash index of %s" (gnus-prin1-to-string item))
+ (setq item (gnus-remove-if
+ (lambda (field)
+ (when (listp field)
+ (memq (car field) nnrss-ignore-article-fields)))
+ item))
+ (md5 (gnus-prin1-to-string item)
+ nil nil
+ nnrss-file-coding-system))
(defun nnrss-check-group (group server)
(let (file xml subject url extra changed author date feed-subject
(dolist (item (nreverse (nnrss-find-el (intern (concat rss-ns "item")) xml)))
(when (and (listp item)
(string= (concat rss-ns "item") (car item))
- (progn (setq hash-index (md5 (gnus-prin1-to-string item)))
+ (progn (setq hash-index (nnrss-make-hash-index item))
(not (gethash hash-index nnrss-group-hashtb))))
(setq subject (nnrss-node-text rss-ns 'title item))
(setq url (nnrss-decode-entities-string
(push (list group nnrss-group-max) nnrss-server-data)))
(nnrss-save-server-data server))))
+(declare-function gnus-group-make-rss-group "gnus-group" (&optional url))
+
(defun nnrss-opml-import (opml-file)
"OPML subscriptions import.
Read the file and attempt to subscribe to each Feed in the file."
(defun nnrss-discover-feed (url)
"Given a page, find an RSS feed using Mark Pilgrim's
-`ultra-liberal rss locator' (http://diveintomark.org/2002/08/15.html)."
+`ultra-liberal rss locator' (URL `http://diveintomark.org/2002/08/15.html')."
(let ((parsed-page (nnrss-fetch url)))
(provide 'nnrss)
-
;;; nnrss.el ends here
-
-;;; arch-tag: 12910c07-0cdf-44fb-8d2c-416ded64c267
projects / gnus / blobdiff