Add a function to write an Atom feed to a file.

[atom.el.git] / atom.el

diff --git a/atom.el b/atom.el
index 875ef87f318f7b93e62dfa9c9e216a4eae3f6217..c73c7d90704d10c8140183bff29e23e9d18a4603 100644 (file)
--- a/atom.el
+++ b/atom.el
@@ -86,7 +86,7 @@ UPDATED is the date the feed was last updated. If not given,
 ID is a unique identifier for this feed. If not given, it
 defaults to LINK."
   (let ((atom-feed (list (list 'title nil title))))
-    (atom-modify-entry atom-feed 'link (list (list (cons 'href link))))
+    (atom-modify-entry atom-feed 'link `(((href . ,link))))
     (atom-modify-entry atom-feed 'author (atom-massage-author author))
     (if self (atom-modify-entry atom-feed 'link
                                `(((href . ,self) (rel . "self")
@@ -97,7 +97,7 @@ defaults to LINK."
 
 (defun atom-push-entry (atom entry)
   "Add the entry ENTRY to the feed ATOM."
-  (nconc atom (list `(entry nil . ,entry))))
+  (nconc atom (list `(entry nil ,@entry))))
 
 (defun atom-modify-entry (entry name val)
   "Set the NAME element of ENTRY to VAL. A true MULTIPLE means
@@ -148,10 +148,8 @@ when the content of the entry ."
 be a string enconding a valid HTML fragment. See `atom-add-entry'
 for additional details."
   (atom-add-entry atom
-   title link
-   (atom-massage-html content)
-   (and summary (atom-massage-html summary))
-   updated id))
+   title link (atom-massage-html content)
+   updated id (and summary (atom-massage-html summary))))
 
 (defun atom-add-xhtml-entry (atom title link content
                                  &optional updated id summary)
@@ -159,10 +157,8 @@ for additional details."
 given either as a string, or as an XML tree, of a valid XHTML
 fragment. See `atom-add-entry' for additional details."
   (atom-add-entry atom
-   title link
-   (atom-massage-xhtml content)
-   (and summary        (atom-massage-xhtml summary))
-   updated id))
+   title link (atom-massage-xhtml content)
+   updated id (and summary (atom-massage-xhtml summary))))
 
 (defun atom-print (atom)
   "Print the Atom feed ATOM in the current buffer."
@@ -171,6 +167,12 @@ fragment. See `atom-add-entry' for additional details."
   (xml-print atom)
   (insert "\n</feed>"))
 
+(defun atom-write-file (atom filename)
+  "Writes the feed ATOM to FILENAME."
+  (with-temp-buffer
+    (atom-print atom)
+    (write-region (point-min) (point-max) filename)))
+
 \f
 (defun atom-format-time (&optional time)
   "Format a time according to RFC3339."
@@ -189,17 +191,18 @@ Atom feed. CONTENT must be a string."
 (defun atom-string-to-xml (string)
   "Convert STRING into a Lisp structure as used by `xml.el'."
   (with-temp-buffer
+    (insert "<div xmlns=\"http://www.w3.org/1999/xhtml\">")
     (insert string)
+    (insert "</div>")
     (xml-parse-region (point-min) (point-max))))
 
 (defun atom-massage-xhtml (content)
   "Massage CONTENT so it can be used as an XHTML fragment in an
 Atom feed."
-  (list '((type . "xhtml"))
-       `(div ((xmlns . "http://www.w3.org/1999/xhtml"))
-             . ,(or (and (stringp content)
-                         (atom-string-to-xml content))
-                    content))))
+  `(((type . "xhtml"))
+    ,@(or (and (stringp content)
+              (atom-string-to-xml content))
+         content)))
 
 (defun atom-massage-author (author)
   "Return an XML node representing the author. AUTHOR can be:
@@ -209,21 +212,20 @@ Atom feed."
 - a list with two elements, the full name and the email address
   of the author;
 - something else, assumed to be a complete `atomPersonConstruct'."
-  `(nil .
-       ,(cond
-         ((null author) `((name nil ,user-full-name)
-                          (email nil ,user-mail-address)))
-         ((stringp author) `((name nil ,author)))
-         ((= 2 (length author)) `((name nil ,(car author))
-                                  (email nil ,(cadr author))))
-         (t `(author nil ,author)))))
+  `(nil ,@(cond
+          ((null author) `((name nil ,user-full-name)
+                           (email nil ,user-mail-address)))
+          ((stringp author) `((name nil ,author)))
+          ((= 2 (length author)) `((name nil ,(car author))
+                                   (email nil ,(cadr author))))
+          (t `(author nil ,author)))))
 
 (require 'url-parse)
 
 (defun atom-generate-id (link creation-date)
   "Generate a string suitable for use as an atom:id element. This
 implements Mark Pilgrom's tag: URI method, using the
-CREATION-DATE of the entry, and the domain part of LINK"
+CREATION-DATE of the entry, and the domain part of LINK."
     (format "tag:%s,%s:/%s"
            (url-host (url-generic-parse-url link))
            (format-time-string "%Y-%m-%d" creation-date)