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mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-12-02 08:22:22 +00:00
emacs/lisp/url/url-news.el
Glenn Morris ed8be7ff74 Misc custom group fixes
* cus-start.el (show-trailing-whitespace): Move to editing basics.
* faces.el (trailing-whitespace): Don't use whitespace-faces group.
* obsolete/old-whitespace.el (whitespace-faces): Remove group.
(whitespace-highlight): Move to whitespace group.

* comint.el (comint-source):
* pcmpl-linux.el (pcmpl-linux):
* shell.el (shell-faces):
* eshell/esh-opt.el (eshell-opt):
* international/ccl.el (ccl): Remove empty custom groups.

* completion.el (dynamic-completion-mode):
* jit-lock.el (jit-lock-debug-mode):
* minibuffer.el (completion-in-region-mode):
* type-break.el (type-break-mode-line-message-mode)
(type-break-query-mode):
* emulation/tpu-edt.el (tpu-edt-mode):
* progmodes/subword.el (global-subword-mode, global-superword-mode):
* progmodes/vhdl-mode.el (vhdl-electric-mode, vhdl-stutter-mode):
* term/vt100.el (vt100-wide-mode): Specify explicit :group.

* term/xterm.el (xterm): Change parent group to terminals.

* master.el (master): Remove empty custom group.
(master-mode): Remove unused :group argument.
* textmodes/refill.el (refill): Remove empty custom group.
(refill-mode): Remove unused :group argument.

* textmodes/rst.el (rst-compile-toolsets): Use rst-compile group.

* cedet/semantic/symref/list.el (semantic-symref-auto-expand-results)
(semantic-symref-results-mode-hook)
(semantic-symref-results-summary-function): Fix :group.

* erc/erc-list.el (erc-list):
* erc/erc-menu.el (erc-menu):
* erc/erc-ring.el (erc-ring): Define custom groups, for define-erc-module.

* gnus/shr-color.el (shr-color-visible-luminance-min)
(shr-color-visible-distance-min): Use shr-color group.

* url/url-news.el (url-news): Remove empty custom group.
2013-05-15 19:55:41 -04:00

134 lines
4.1 KiB
EmacsLisp

;;; url-news.el --- News Uniform Resource Locator retrieval code
;; Copyright (C) 1996-1999, 2004-2013 Free Software Foundation, Inc.
;; Keywords: comm, data, processes
;; 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 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.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'url-vars)
(require 'url-util)
(require 'url-parse)
(require 'nntp)
(autoload 'url-warn "url")
(autoload 'gnus-group-read-ephemeral-group "gnus-group")
;; Unused.
;;; (defgroup url-news nil
;;; "News related options."
;;; :group 'url)
(defun url-news-open-host (host port user pass)
(if (fboundp 'nnheader-init-server-buffer)
(nnheader-init-server-buffer))
(nntp-open-server host (list port))
(if (and user pass)
(progn
(nntp-send-command "^.*\r?\n" "AUTHINFO USER" user)
(nntp-send-command "^.*\r?\n" "AUTHINFO PASS" pass)
(if (not (nntp-server-opened host))
(url-warn 'url (format "NNTP authentication to `%s' as `%s' failed"
host user))))))
(defun url-news-fetch-message-id (host message-id)
(let ((buf (generate-new-buffer " *url-news*")))
(if (eq ?> (aref message-id (1- (length message-id))))
nil
(setq message-id (concat "<" message-id ">")))
(if (cdr-safe (nntp-request-article message-id nil host buf))
;; Successfully retrieved the article
nil
(with-current-buffer buf
(insert "Content-type: text/html\n\n"
"<html>\n"
" <head>\n"
" <title>Error</title>\n"
" </head>\n"
" <body>\n"
" <div>\n"
" <h1>Error requesting article...</h1>\n"
" <p>\n"
" The status message returned by the NNTP server was:"
"<br><hr>\n"
" <xmp>\n"
(nntp-status-message)
" </xmp>\n"
" </p>\n"
" <p>\n"
" If you If you feel this is an error, <a href=\""
"mailto:" url-bug-address "\">send mail</a>\n"
" </p>\n"
" </div>\n"
" </body>\n"
"</html>\n"
"<!-- Automatically generated by URL v" url-version " -->\n"
)))
buf))
(defvar gnus-group-buffer)
(defun url-news-fetch-newsgroup (newsgroup host)
(if (string-match "^/+" newsgroup)
(setq newsgroup (substring newsgroup (match-end 0))))
(if (string-match "/+$" newsgroup)
(setq newsgroup (substring newsgroup 0 (match-beginning 0))))
;; This saves us from checking new news if Gnus is already running
;; FIXME - is it relatively safe to use gnus-alive-p here? FIXME
(if (or (not (get-buffer gnus-group-buffer))
(with-current-buffer gnus-group-buffer
(not (eq major-mode 'gnus-group-mode))))
(gnus))
(set-buffer gnus-group-buffer)
(goto-char (point-min))
(gnus-group-read-ephemeral-group newsgroup
(list 'nntp host
(list 'nntp-open-connection-function
nntp-open-connection-function))
nil
(cons (current-buffer) 'browse)))
;;;###autoload
(defun url-news (url)
;; Find a news reference
(let* ((host (or (url-host url) url-news-server))
(port (url-port url))
(article-brackets nil)
(buf nil)
(article (url-unhex-string (url-filename url))))
(url-news-open-host host port (url-user url) (url-password url))
(cond
((string-match "@" article) ; Its a specific article
(setq buf (url-news-fetch-message-id host article)))
((string= article "") ; List all newsgroups
(gnus))
(t ; Whole newsgroup
(url-news-fetch-newsgroup article host)))
buf))
;;;###autoload
(defun url-snews (url)
(let ((nntp-open-connection-function (if (eq 'ssl url-gateway-method)
'nntp-open-ssl-stream
'nntp-open-tls-stream)))
(url-news url)))
(provide 'url-news)
;;; url-news.el ends here