;;; mm-url.el --- a wrapper of url functions/commands for Gnus
-;; Copyright (C) 2001 Free Software Foundation, Inc.
+;; Copyright (C) 2001, 2002 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;;; Code:
-(require 'mm-util)
-(require 'executable)
-
(eval-when-compile (require 'cl))
+(require 'mm-util)
+(require 'gnus)
+
(eval-and-compile
- (autoload 'url-insert-file-contents "url-handlers"))
+ (autoload 'executable-find "executable"))
(defgroup mm-url nil
"A wrapper of url package and external url command for Gnus."
(defcustom mm-url-use-external (not
(condition-case nil
- (require 'url-handlers)
+ (require 'url)
(error nil)))
"*If not-nil, use external grab program `mm-url-program'."
:type 'boolean
(defvar mm-url-predefined-programs
'((wget "wget" "-q" "-O" "-")
+ (w3m "w3m" "-dump_source")
(lynx "lynx" "-source")
(curl "curl")))
-(defcustom mm-url-program
+(defcustom mm-url-program
(cond
((executable-find "wget") 'wget)
+ ((executable-find "w3m") 'w3m)
((executable-find "lynx") 'lynx)
((executable-find "curl") 'curl)
(t "GET"))
"The url grab program."
- :type '(choice
+ :type '(choice
(symbol :tag "wget" wget)
+ (symbol :tag "w3m" w3m)
(symbol :tag "lynx" lynx)
(symbol :tag "curl" curl)
(string :tag "other"))
:type '(repeat string)
:group 'mm-url)
+\f
+;;; Internal variables
+
+(defvar mm-url-package-name
+ (gnus-replace-in-string
+ (gnus-replace-in-string gnus-version " v.*$" "")
+ " " "-"))
+
+(defvar mm-url-package-version gnus-version-number)
+
;; Stolen from w3.
(defvar mm-url-html-entities
'(
"A list of characters that are _NOT_ reserved in the URL spec.
This is taken from RFC 2396.")
+(defun mm-url-load-url ()
+ "Load `url-insert-file-contents'."
+ (unless (condition-case ()
+ (require 'url-handlers)
+ (error nil))
+ ;; w3-4.0pre0.46 or earlier version.
+ (require 'w3-vars)
+ (require 'url)))
+
(defun mm-url-insert-file-contents (url)
(if mm-url-use-external
(if (string-match "^file:/+" url)
(insert-file-contents (substring url (1- (match-end 0))))
(mm-url-insert-file-contents-external url))
- (url-insert-file-contents url)))
+ (mm-url-load-url)
+ (let ((name buffer-file-name)
+ (url-package-name (or mm-url-package-name
+ url-package-name))
+ (url-package-version (or mm-url-package-version
+ url-package-version)))
+ (prog1
+ (url-insert-file-contents url)
+ (save-excursion
+ (goto-char (point-min))
+ (while (re-search-forward "\r 1000\r ?" nil t)
+ (replace-match "")))
+ (setq buffer-file-name name)))))
(defun mm-url-insert-file-contents-external (url)
(let (program args)
args (append mm-url-arguments (list url))))
(apply 'call-process program nil t nil args)))
+(defvar mm-url-timeout 30
+ "The number of seconds before timing out an URL fetch.")
+
+(defvar mm-url-retries 10
+ "The number of retries after timing out when fetching an URL.")
+
(defun mm-url-insert (url &optional follow-refresh)
"Insert the contents from an URL in the current buffer.
If FOLLOW-REFRESH is non-nil, redirect refresh url in META."
- (let ((name buffer-file-name))
- (if follow-refresh
- (save-restriction
- (narrow-to-region (point) (point))
- (mm-url-insert-file-contents url)
- (goto-char (point-min))
- (when (re-search-forward
- "<meta[ \t\r\n]*http-equiv=\"Refresh\"[^>]*URL=\\([^\"]+\\)\"" nil t)
- (let ((url (match-string 1)))
- (delete-region (point-min) (point-max))
- (mm-url-insert url t))))
- (mm-url-insert-file-contents url))
- (setq buffer-file-name name)))
+ (let ((times mm-url-retries)
+ (done nil)
+ (first t)
+ result)
+ (while (and (not (zerop (decf times)))
+ (not done))
+ (with-timeout (mm-url-timeout)
+ (unless first
+ (message "Trying again (%s)..." (- mm-url-retries times)))
+ (setq first nil)
+ (if follow-refresh
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (mm-url-insert-file-contents url)
+ (goto-char (point-min))
+ (when (re-search-forward
+ "<meta[ \t\r\n]*http-equiv=\"Refresh\"[^>]*URL=\\([^\"]+\\)\"" nil t)
+ (let ((url (match-string 1)))
+ (delete-region (point-min) (point-max))
+ (setq result (mm-url-insert url t)))))
+ (setq result (mm-url-insert-file-contents url)))
+ (setq done t)))
+ result))
(defun mm-url-decode-entities ()
"Decode all HTML entities."
(setq elem (char-to-string elem)))
(replace-match elem t t))))
+(defun mm-url-decode-entities-nbsp ()
+ "Decode all HTML entities and to a space."
+ (let ((mm-url-html-entities (cons '(nbsp . 32) mm-url-html-entities)))
+ (mm-url-decode-entities)))
+
(defun mm-url-decode-entities-string (string)
(with-temp-buffer
(insert string)
chunk)
""))
+(defun mm-url-encode-www-form-urlencoded (pairs)
+ "Return PAIRS encoded for forms."
+ (mapconcat
+ (lambda (data)
+ (concat (mm-url-form-encode-xwfu (car data)) "="
+ (mm-url-form-encode-xwfu (cdr data))))
+ pairs "&"))
+
+(defun mm-url-fetch-form (url pairs)
+ "Fetch a form from URL with PAIRS as the data using the POST method."
+ (mm-url-load-url)
+ (let ((url-request-data (mm-url-encode-www-form-urlencoded pairs))
+ (url-request-method "POST")
+ (url-request-extra-headers
+ '(("Content-type" . "application/x-www-form-urlencoded"))))
+ (url-insert-file-contents url)
+ (setq buffer-file-name nil))
+ t)
+
+(defun mm-url-fetch-simple (url content)
+ (mm-url-load-url)
+ (let ((url-request-data content)
+ (url-request-method "POST")
+ (url-request-extra-headers
+ '(("Content-type" . "application/x-www-form-urlencoded"))))
+ (url-insert-file-contents url)
+ (setq buffer-file-name nil))
+ t)
+
+(defun mm-url-remove-markup ()
+ "Remove all HTML markup, leaving just plain text."
+ (goto-char (point-min))
+ (while (search-forward "<!--" nil t)
+ (delete-region (match-beginning 0)
+ (or (search-forward "-->" nil t)
+ (point-max))))
+ (goto-char (point-min))
+ (while (re-search-forward "<[^>]+>" nil t)
+ (replace-match "" t t)))
+
(provide 'mm-url)
;;; mm-url.el ends here
projects / gnus / blobdiff