Change sorting algorithm v1 SUPERSEDED

Ivan Sokolov: 1
 Change sorting algorithm

 1 files changed, 17 insertions(+), 19 deletions(-)

[PATCH] Change sorting algorithm Export this patch

- use cl-sort
- remove org-webring-sort-items-by-pub-date (uncomposable)
- rename org-webring--pub-date-to-time to org-webring--date->time
- add type for org-webring-attribution
- require org (for org-time-stamp-formats)
---
 org-webring.el | 36 +++++++++++++++++-------------------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/org-webring.el b/org-webring.el
index c4e3211..5af2817 100644
--- a/org-webring.el
+++ b/org-webring.el
@@ -50,6 +50,7 @@
 
 (require 'cl-lib)
 (require 'dom)
+(require 'org)
 (require 'seq)
 (require 'url)
 (require 'xml)
@@ -75,7 +76,8 @@
 generate the webring to its URL to be displayed at the bottom
 of the webring."
   :group 'org-webring
-  :type 'sexp)
+  :type '(cons (string :tag "Name")
+               (string :tag "URL")))
 
 (defcustom org-webring-urls '()
   "The links for the RSS feeds to be scraped for items."
@@ -120,10 +122,6 @@ FEED, ignoring the items."
 		(url-insert-file-contents link)
 		(xml-parse-region)))))
 
-(defun org-webring--pub-date-to-time (pub-date)
-  "Convert the a 'pubDate' string to a time value."
-  (apply 'encode-time (parse-time-string pub-date)))
-
 (defun org-webring--get-items-from-urls (urls)
   "Create a list of all the items contained in the URLS list of
 RSS feed links."
@@ -142,14 +140,6 @@ RSS feed links."
 					 org-webring-items-per-source))))
 		  urls)))
 
-(defun org-webring--sort-items-by-pub-date (items)
-  "Sort a list of parsed RSS feed items by newest."
-  (sort items
-	(lambda (x y)
-	  (let ((t1 (org-webring--pub-date-to-time (org-webring--feed-text-prop x 'pubDate)))
-		(t2 (org-webring--pub-date-to-time (org-webring--feed-text-prop y 'pubDate))))
-	    (not (time-less-p t1 t2))))))
-
 (defun org-webring--string-truncate (len s elipsis)
   "If S is longer than LEN, cut it down and add ELIPSIS at the
 end. Taken from the s.el library."
@@ -183,17 +173,25 @@ end. Taken from the s.el library."
 						  (org-webring--feed-text-prop item 'pubDate)
 						  "")))))))
 
+(defun org-webring--date->time (date)
+  "Convert DATE string to a time value."
+  (apply 'encode-time (parse-time-string date)))
+
+(defun org-webring--pub-time (item)
+  "Get ITEM's publication time."
+  (org-webring--date->time
+   (org-webring--feed-text-prop item 'pubDate)))
+
 (defun org-webring-generate-webring ()
   "Generate the entire webring and return it as HTML."
-  (let ((items (org-webring--sort-items-by-pub-date
-		(org-webring--get-items-from-urls org-webring-urls))))
+  (let* ((items (org-webring--get-items-from-urls org-webring-urls))
+         (sorted-items (cl-sort items #'time-less-p :key #'org-webring--pub-time))
+         (most-recent (last sorted-items org-webring-items-total))
+         (articles (mapcar #'org-webring--article-instance most-recent)))
     (xmlgen
      `(section :class "feed"
 	       (h4 feed-header)
-	       (section :class "articles"
-			,@(cl-loop repeat org-webring-items-total
-				   for item in items
-				   collect (org-webring--article-instance item)))
+	       (section :class "articles" ,@articles)
 	       (p :class "attribution"
 		  (span :class "timestamp-wrapper"
 			(span :class "timestamp"
-- 
2.28.0