;;; nnrss.el --- interfacing with RSS
-;; Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+;; Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;; Keywords: RSS
(defvoo nnrss-group-max 0)
(defvoo nnrss-group-min 1)
(defvoo nnrss-group nil)
-(defvoo nnrss-group-hashtb nil)
+(defvoo nnrss-group-hashtb (make-hash-table :test 'equal))
(defvoo nnrss-status-string "")
(defconst nnrss-version "nnrss 1.0")
(defvar nnrss-content-function nil
"A function which is called in `nnrss-request-article'.
The arguments are (ENTRY GROUP ARTICLE).
-ENTRY is the record of the current headline. GROUP is the group name.
+ENTRY is the record of the current headline. GROUP is the group name.
ARTICLE is the article number of the current headline.")
(nnoo-define-basics nnrss)
(nth 2 e))))
(insert "\n\n--" boundary "\nContent-Type: text/plain\n\n")
(let ((point (point)))
- (if text
- (progn (insert text)
- (goto-char point)
- (while (re-search-forward "\n" nil t)
- (replace-match " "))
- (goto-char (point-max))
- (insert "\n\n")))
- (if link
- (insert link)))
+ (when text
+ (insert text)
+ (goto-char point)
+ (while (re-search-forward "\n" nil t)
+ (replace-match " "))
+ (goto-char (point-max))
+ (insert "\n\n"))
+ (when link
+ (insert link)))
(insert "\n\n--" boundary "\nContent-Type: text/html\n\n")
(let ((point (point)))
- (if text
- (progn (insert "<html><head></head><body>\n" text "\n</body></html>")
- (goto-char point)
- (while (re-search-forward "\n" nil t)
- (replace-match " "))
- (goto-char (point-max))
- (insert "\n\n")))
- (if link
- (insert "<p><a href=\"" link "\">link</a></p>\n"))))
- (if nnrss-content-function
- (funcall nnrss-content-function e group article)))))
+ (when text
+ (insert "<html><head></head><body>\n" text "\n</body></html>")
+ (goto-char point)
+ (while (re-search-forward "\n" nil t)
+ (replace-match " "))
+ (goto-char (point-max))
+ (insert "\n\n"))
+ (when link
+ (insert "<p><a href=\"" link "\">link</a></p>\n"))))
+ (when nnrss-content-function
+ (funcall nnrss-content-function e group article)))))
(cond
(err
(nnheader-report 'nnrss err))
(setq nnrss-server-data
(delq (assoc group nnrss-server-data) nnrss-server-data))
(nnrss-save-server-data server)
- (let ((file (expand-file-name
- (nnrss-translate-file-chars
- (concat group (and server
- (not (equal server ""))
- "-")
- server ".el")) nnrss-directory)))
- (ignore-errors
- (delete-file file)))
+ (ignore-errors
+ (delete-file (nnrss-make-filename group server)))
t)
(deffoo nnrss-request-list-newsgroups (&optional server)
;;; Internal functions
(eval-when-compile (defun xml-rpc-method-call (&rest args)))
(defun nnrss-fetch (url &optional local)
- "Fetch the url and put it in a the expected lisp structure."
+ "Fetch URL and put it in a the expected Lisp structure."
(with-temp-buffer
;some CVS versions of url.el need this to close the connection quickly
(let* (xmlform htmlform)
(defvar nnrss-extra-categories '(nnrss-snarf-moreover-categories))
(defun nnrss-generate-active ()
- (if (y-or-n-p "fetch extra categories? ")
+ (if (y-or-n-p "Fetch extra categories? ")
(dolist (func nnrss-extra-categories)
(funcall func)))
(save-excursion
(defun nnrss-read-server-data (server)
(setq nnrss-server-data nil)
- (let ((file (expand-file-name
- (nnrss-translate-file-chars
- (concat "nnrss" (and server
- (not (equal server ""))
- "-")
- server
- ".el"))
- nnrss-directory)))
+ (let ((file (nnrss-make-filename "nnrss" server)))
(when (file-exists-p file)
- (with-temp-buffer
- (let ((coding-system-for-read 'binary)
- emacs-lisp-mode-hook)
- (insert-file-contents file)
- (emacs-lisp-mode)
- (goto-char (point-min))
- (eval-buffer))))))
+ (let ((coding-system-for-read 'binary))
+ (load file nil nil t)))))
(defun nnrss-save-server-data (server)
(gnus-make-directory nnrss-directory)
- (let ((file (expand-file-name
- (nnrss-translate-file-chars
- (concat "nnrss" (and server
- (not (equal server ""))
- "-")
- server ".el"))
- nnrss-directory)))
- (let ((coding-system-for-write 'binary)
- print-level print-length)
- (with-temp-file file
- (insert "(setq nnrss-group-alist '"
- (prin1-to-string nnrss-group-alist)
- ")\n")
- (insert "(setq nnrss-server-data '"
- (prin1-to-string nnrss-server-data)
- ")\n")))))
+ (let ((coding-system-for-write 'binary))
+ (with-temp-file (nnrss-make-filename "nnrss" server)
+ (gnus-prin1 `(setq nnrss-group-alist ',nnrss-group-alist))
+ (gnus-prin1 `(setq nnrss-server-data ',nnrss-server-data)))))
(defun nnrss-read-group-data (group server)
(setq nnrss-group-data nil)
- (setq nnrss-group-hashtb (gnus-make-hashtable))
+ (if (hash-table-p nnrss-group-hashtb)
+ (clrhash nnrss-group-hashtb)
+ (setq nnrss-group-hashtb (make-hash-table :test 'equal)))
(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 (expand-file-name
- (nnrss-translate-file-chars
- (concat group (and server
- (not (equal server ""))
- "-")
- server ".el"))
- nnrss-directory)))
+ (let ((file (nnrss-make-filename group server)))
(when (file-exists-p file)
- (with-temp-buffer
- (let ((coding-system-for-read 'binary)
- emacs-lisp-mode-hook)
- (insert-file-contents file)
- (emacs-lisp-mode)
- (goto-char (point-min))
- (eval-buffer)))
+ (let ((coding-system-for-read 'binary))
+ (load file nil t t))
(dolist (e nnrss-group-data)
- (gnus-sethash (nth 2 e) e nnrss-group-hashtb)
- (if (and (car e) (> nnrss-group-min (car e)))
- (setq nnrss-group-min (car e)))
- (if (and (car e) (< nnrss-group-max (car e)))
- (setq nnrss-group-max (car e)))))))
+ (puthash (or (nth 2 e) (nth 3 e)) t nnrss-group-hashtb)
+ (when (and (car e) (> nnrss-group-min (car e)))
+ (setq nnrss-group-min (car e)))
+ (when (and (car e) (< nnrss-group-max (car e)))
+ (setq nnrss-group-max (car e)))))))
(defun nnrss-save-group-data (group server)
(gnus-make-directory nnrss-directory)
- (let ((file (expand-file-name
- (nnrss-translate-file-chars
- (concat group (and server
- (not (equal server ""))
- "-")
- server ".el"))
- nnrss-directory)))
- (let ((coding-system-for-write 'binary)
- print-level print-length)
- (with-temp-file file
- (insert "(setq nnrss-group-data '"
- (prin1-to-string nnrss-group-data)
- ")\n")))))
+ (let ((coding-system-for-write 'binary))
+ (with-temp-file (nnrss-make-filename group server)
+ (gnus-prin1 `(setq nnrss-group-data ',nnrss-group-data)))))
+
+(defun nnrss-make-filename (name server)
+ (expand-file-name
+ (nnrss-translate-file-chars
+ (concat name
+ (and server
+ (not (equal server ""))
+ "-")
+ server
+ ".el"))
+ nnrss-directory))
+
+(gnus-add-shutdown 'nnrss-close 'gnus)
+
+(defun nnrss-close ()
+ "Clear internal nnrss variables."
+ (setq nnrss-group-data nil
+ nnrss-server-data nil
+ nnrss-group-hashtb nil
+ nnrss-group-alist nil))
;;; URL interface
content-ns (nnrss-get-namespace-prefix xml "http://purl.org/rss/1.0/modules/content/"))
(dolist (item (nreverse (nnrss-find-el (intern (concat rss-ns "item")) xml)))
(when (and (listp item)
- (eq (intern (concat rss-ns "item")) (car item))
- (setq url (nnrss-decode-entities-unibyte-string
- (nnrss-node-text rss-ns 'link (cddr item))))
- (not (gnus-gethash url nnrss-group-hashtb)))
- (setq subject (nnrss-node-text rss-ns 'title item))
+ (string= (concat rss-ns "item") (car item))
+ (if (setq url (nnrss-decode-entities-unibyte-string
+ (nnrss-node-text rss-ns 'link (cddr item))))
+ (not (gethash url nnrss-group-hashtb))
+ (setq subject (nnrss-node-text rss-ns 'title item))
+ (not (gethash subject nnrss-group-hashtb))))
+ (setq subject (or subject (nnrss-node-text rss-ns 'title item)))
(setq extra (or (nnrss-node-text content-ns 'encoded item)
(nnrss-node-text rss-ns 'description item)))
(setq author (or (nnrss-node-text rss-ns 'author item)
date
(and extra (nnrss-decode-entities-unibyte-string extra)))
nnrss-group-data)
- (gnus-sethash url (car nnrss-group-data) nnrss-group-hashtb)
- (setq changed t)))
+ (puthash (or url subject) t nnrss-group-hashtb)
+ (setq changed t))
+ (setq subject nil))
(when changed
(nnrss-save-group-data group server)
(let ((pair (assoc group nnrss-server-data)))
(push (list group nnrss-group-max) nnrss-server-data)))
(nnrss-save-server-data server))))
+(defun nnrss-opml-import (opml-file)
+ "OPML subscriptions import.
+Read the file and attempt to subscribe to each Feed in the file."
+ (interactive "fImport file: ")
+ (mapcar
+ (lambda (node) (gnus-group-make-rss-group
+ (cdr (assq 'xmlUrl (cadr node)))))
+ (nnrss-find-el 'outline
+ (progn
+ (find-file opml-file)
+ (xml-parse-region (point-min)
+ (point-max))))))
+
+(defun nnrss-opml-export ()
+ "OPML subscription export.
+Export subscriptions to a buffer in OPML Format."
+ (interactive)
+ (with-current-buffer (get-buffer-create "*OPML Export*")
+ (mm-set-buffer-file-coding-system 'utf-8)
+ (insert (concat
+ "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
+ "<!-- OPML generated by Emacs Gnus' nnrss.el -->\n"
+ "<opml version=\"1.1\">\n"
+ " <head>\n"
+ " <title>mySubscriptions</title>\n"
+ " <dateCreated>" (format-time-string "%a, %d %b %Y %T %z")
+ "</dateCreated>\n"
+ " <ownerEmail>" user-mail-address "</ownerEmail>\n"
+ " <ownerName>" (user-full-name) "</ownerName>\n"
+ " </head>\n"
+ " <body>\n"))
+ (mapc (lambda (sub)
+ (insert (concat
+ " <outline text=\"" (car sub) "\" xmlUrl=\""
+ (cadr sub) "\"/>\n")))
+ nnrss-group-alist)
+ (insert (concat
+ " </body>\n"
+ "</opml>\n")))
+ (pop-to-buffer "*OPML Export*")
+ (when (fboundp 'sgml-mode)
+ (sgml-mode)))
+
(defun nnrss-generate-download-script ()
"Generate a download script in the current buffer.
It is useful when `(setq nnrss-use-local t)'."
node))
(defun nnrss-find-el (tag data &optional found-list)
- "Find the all matching elements in the data. Careful with this on
-large documents!"
- (if (listp data)
- (mapcar (lambda (bit)
- (if (car-safe bit)
- (progn (if (equal tag (car bit))
- (setq found-list
- (append found-list
- (list bit))))
- (if (and (listp (car-safe (caddr bit)))
- (not (stringp (caddr bit))))
- (setq found-list
- (append found-list
- (nnrss-find-el
- tag (caddr bit))))
- (setq found-list
- (append found-list
- (nnrss-find-el
- tag (cddr bit))))))))
- data))
+ "Find the all matching elements in the data.
+Careful with this on large documents!"
+ (when (listp data)
+ (mapc (lambda (bit)
+ (when (car-safe bit)
+ (when (equal tag (car bit))
+ (setq found-list
+ (append found-list
+ (list bit))))
+ (if (and (listp (car-safe (caddr bit)))
+ (not (stringp (caddr bit))))
+ (setq found-list
+ (append found-list
+ (nnrss-find-el
+ tag (caddr bit))))
+ (setq found-list
+ (append found-list
+ (nnrss-find-el
+ tag (cddr bit)))))))
+ data))
found-list)
(defun nnrss-rsslink-p (el)
"Test if the element we are handed is an RSS autodiscovery link."
(and (eq (car-safe el) 'link)
(string-equal (cdr (assoc 'rel (cadr el))) "alternate")
- (or (string-equal (cdr (assoc 'type (cadr el)))
+ (or (string-equal (cdr (assoc 'type (cadr el)))
"application/rss+xml")
(string-equal (cdr (assoc 'type (cadr el))) "text/xml"))))
(defun nnrss-get-rsslinks (data)
"Extract the <link> elements that are links to RSS from the parsed data."
- (delq nil (mapcar
+ (delq nil (mapcar
(lambda (el)
(if (nnrss-rsslink-p el) el))
(nnrss-find-el 'link data))))
(defun nnrss-extract-hrefs (data)
- "Recursively extract hrefs from a page's source. DATA should be
-the output of xml-parse-region or w3-parse-buffer."
+ "Recursively extract hrefs from a page's source.
+DATA should be the output of `xml-parse-region' or
+`w3-parse-buffer'."
(mapcar (lambda (ahref)
(cdr (assoc 'href (cadr ahref))))
(nnrss-find-el 'a data)))
-(defmacro nnrss-match-macro (base-uri item
+(defmacro nnrss-match-macro (base-uri item
onsite-list offsite-list)
`(cond ((or (string-match (concat "^" ,base-uri) ,item)
(not (string-match "://" ,item)))
rss-onsite-in rdf-onsite-in xml-onsite-in
rss-offsite-end rdf-offsite-end xml-offsite-end
rss-offsite-in rdf-offsite-in xml-offsite-in)
- (mapcar (lambda (href)
- (if (not (null href))
- (cond ((string-match "\\.rss$" href)
- (nnrss-match-macro
- base-uri href rss-onsite-end rss-offsite-end))
- ((string-match "\\.rdf$" href)
- (nnrss-match-macro
- base-uri href rdf-onsite-end rdf-offsite-end))
- ((string-match "\\.xml$" href)
- (nnrss-match-macro
- base-uri href xml-onsite-end xml-offsite-end))
- ((string-match "rss" href)
- (nnrss-match-macro
- base-uri href rss-onsite-in rss-offsite-in))
- ((string-match "rdf" href)
- (nnrss-match-macro
- base-uri href rdf-onsite-in rdf-offsite-in))
- ((string-match "xml" href)
- (nnrss-match-macro
- base-uri href xml-onsite-in xml-offsite-in)))))
- hrefs)
- (append
+ (mapc (lambda (href)
+ (if (not (null href))
+ (cond ((string-match "\\.rss$" href)
+ (nnrss-match-macro
+ base-uri href rss-onsite-end rss-offsite-end))
+ ((string-match "\\.rdf$" href)
+ (nnrss-match-macro
+ base-uri href rdf-onsite-end rdf-offsite-end))
+ ((string-match "\\.xml$" href)
+ (nnrss-match-macro
+ base-uri href xml-onsite-end xml-offsite-end))
+ ((string-match "rss" href)
+ (nnrss-match-macro
+ base-uri href rss-onsite-in rss-offsite-in))
+ ((string-match "rdf" href)
+ (nnrss-match-macro
+ base-uri href rdf-onsite-in rdf-offsite-in))
+ ((string-match "xml" href)
+ (nnrss-match-macro
+ base-uri href xml-onsite-in xml-offsite-in)))))
+ hrefs)
+ (append
rss-onsite-end rdf-onsite-end xml-onsite-end
rss-onsite-in rdf-onsite-in xml-onsite-in
rss-offsite-end rdf-offsite-end xml-offsite-end
;; - offsite links containing any of the above
(let* ((base-uri (progn (string-match ".*://[^/]+/?" url)
(match-string 0 url)))
- (hrefs (nnrss-order-hrefs
+ (hrefs (nnrss-order-hrefs
base-uri (nnrss-extract-hrefs parsed-page)))
(rss-link nil))
(while (and (eq rss-link nil) (not (eq hrefs nil)))
(nnrss-find-rss-via-syndic8 url))))))))
(defun nnrss-find-rss-via-syndic8 (url)
- "query syndic8 for the rss feeds it has for the url."
+ "Query syndic8 for the rss feeds it has for URL."
(if (not (locate-library "xml-rpc"))
(progn
(message "XML-RPC is not available... not checking Syndic8.")
'syndic8.FindSites
url)))
(when feedid
- (let* ((feedinfo (xml-rpc-method-call
+ (let* ((feedinfo (xml-rpc-method-call
"http://www.syndic8.com/xmlrpc.php"
'syndic8.GetFeedInfo
feedid))
(urllist
- (delq nil
+ (delq nil
(mapcar
(lambda (listinfo)
- (if (string-equal
+ (if (string-equal
(cdr (assoc "status" listinfo))
"Syndicated")
(cons
(cdr (assoc "sitename" listinfo))
(list
(cons 'title
- (cdr (assoc
+ (cdr (assoc
"sitename" listinfo)))
(cons 'href
(cdr (assoc
(if (not (> (length urllist) 1))
(cdar urllist)
(let ((completion-ignore-case t)
- (selection
+ (selection
(mapcar (lambda (listinfo)
- (cons (cdr (assoc "sitename" listinfo))
- (string-to-int
+ (cons (cdr (assoc "sitename" listinfo))
+ (string-to-int
(cdr (assoc "feedid" listinfo)))))
feedinfo)))
- (cdr (assoc
+ (cdr (assoc
(completing-read
"Multiple feeds found. Select one: "
selection nil t) urllist)))))))))
(defun nnrss-rss-p (data)
- "Test if data is an RSS feed. Simply ensures that the first
-element is rss or rdf."
+ "Test if DATA is an RSS feed.
+Simply ensures that the first element is rss or rdf."
(or (eq (caar data) 'rss)
(eq (caar data) 'rdf:RDF)))
that gives the URI for which you want to retrieve the namespace
prefix), return the prefix."
(let* ((prefix (car (rassoc uri (cadar el))))
- (nslist (if prefix
+ (nslist (if prefix
(split-string (symbol-name prefix) ":")))
(ns (cond ((eq (length nslist) 1) ; no prefix given
"")
((eq (length nslist) 2) ; extract prefix
(cadr nslist)))))
- (if (and ns (not (eq ns "")))
+ (if (and ns (not (string= ns "")))
(concat ns ":")
ns)))
projects / elisp / gnus.git- / blobdiff