;;; gnus-util.el --- utility functions for Gnus
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1996-2011 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
(eval-when-compile
(require 'cl))
+(require 'time-date)
+
(defcustom gnus-completing-read-function 'gnus-emacs-completing-read
"Function use to do completing read."
:version "24.1"
(and (= (car fdate) (car date))
(> (nth 1 fdate) (nth 1 date))))))
+;; Every version of Emacs Gnus supports has built-in float-time.
+;; The featurep test silences an irritating compiler warning.
(eval-and-compile
(if (or (featurep 'emacs)
- (and (fboundp 'float-time)
- (subrp (symbol-function 'float-time))))
+ (fboundp 'float-time))
(defalias 'gnus-float-time 'float-time)
(defun gnus-float-time (&optional time)
"Convert time value TIME to a floating point number.
(put-text-property 0 1 'gnus-time time d)
time)))))
-(defvar gnus-user-date-format-alist
- '(((gnus-seconds-today) . "%k:%M")
- (604800 . "%a %k:%M") ;;that's one week
- ((gnus-seconds-month) . "%a %d")
- ((gnus-seconds-year) . "%b %d")
- (t . "%b %d '%y")) ;;this one is used when no
- ;;other does match
- "Specifies date format depending on age of article.
-This is an alist of items (AGE . FORMAT). AGE can be a number (of
-seconds) or a Lisp expression evaluating to a number. When the age of
-the article is less than this number, then use `format-time-string'
-with the corresponding FORMAT for displaying the date of the article.
-If AGE is not a number or a Lisp expression evaluating to a
-non-number, then the corresponding FORMAT is used as a default value.
-
-Note that the list is processed from the beginning, so it should be
-sorted by ascending AGE. Also note that items following the first
-non-number AGE will be ignored.
-
-You can use the functions `gnus-seconds-today', `gnus-seconds-month'
-and `gnus-seconds-year' in the AGE spec. They return the number of
-seconds passed since the start of today, of this month, of this year,
-respectively.")
-
-(defun gnus-user-date (messy-date)
- "Format the messy-date according to gnus-user-date-format-alist.
-Returns \" ? \" if there's bad input or if another error occurs.
-Input should look like this: \"Sun, 14 Oct 2001 13:34:39 +0200\"."
- (condition-case ()
- (let* ((messy-date (gnus-float-time (gnus-date-get-time messy-date)))
- (now (gnus-float-time))
- ;;If we don't find something suitable we'll use this one
- (my-format "%b %d '%y"))
- (let* ((difference (- now messy-date))
- (templist gnus-user-date-format-alist)
- (top (eval (caar templist))))
- (while (if (numberp top) (< top difference) (not top))
- (progn
- (setq templist (cdr templist))
- (setq top (eval (caar templist)))))
- (if (stringp (cdr (car templist)))
- (setq my-format (cdr (car templist)))))
- (format-time-string (eval my-format) (seconds-to-time messy-date)))
- (error " ? ")))
-
(defun gnus-dd-mmm (messy-date)
"Return a string like DD-MMM from a big messy string."
(condition-case ()
(when (file-exists-p file)
(delete-file file)))
+(defun gnus-delete-duplicates (list)
+ "Remove duplicate entries from LIST."
+ (let ((result nil))
+ (while list
+ (unless (member (car list) result)
+ (push (car list) result))
+ (pop list))
+ (nreverse result)))
+
(defun gnus-delete-directory (directory)
"Delete files in DIRECTORY. Subdirectories remain.
If there's no subdirectory, delete DIRECTORY as well."
"Rescale IMAGE to SIZE if possible.
SIZE is in format (WIDTH . HEIGHT). Return a new image.
Sizes are in pixels."
- (when (fboundp 'imagemagick-types)
+ (if (or (not (fboundp 'imagemagick-types))
+ (not (get-buffer-window (current-buffer))))
+ image
(let ((new-width (car size))
(new-height (cdr size)))
- (unless (= (cdr (image-size image t)) new-height)
- (setcdr image (plist-put (cdr image) :type 'imagemagick))
- (setcdr image (plist-put (cdr image) :height new-height)))
- (unless (= (car (image-size image t)) new-width)
- (setcdr image (plist-put (cdr image) :type 'imagemagick))
- (setcdr image (plist-put (cdr image) :width new-width)))))
- image)
+ (when (> (cdr (image-size image t)) new-height)
+ (setq image (or (create-image (plist-get (cdr image) :data) 'imagemagick t
+ :height new-height)
+ image)))
+ (when (> (car (image-size image t)) new-width)
+ (setq image (or
+ (create-image (plist-get (cdr image) :data) 'imagemagick t
+ :width new-width)
+ image)))
+ image)))
(defun gnus-list-memq-of-list (elements list)
"Return non-nil if any of the members of ELEMENTS are in LIST."