tag into each WordPress post and page that enables LinkPURL auto-discovery, as described on the LinkPURL website: http://staff.oclc.org/~smithde/linkpurl/. Enables bookmarking of persistent URLs if present in the link tag's href attribute, where the rel attribute has a value of "purl". Note that this plugin may be used for auto-discovery of any persistent identifer scheme as long as the identifier is a URI, rather than being limited to purl-style identifiers.
Version: 1.1
Author: Michael J. Giarlo
Author URI: http://purl.org/net/leftwing/blog
Contributor: Mark Matienzo
Contributor URI: http://matienzo.org/
LinkPURL Header for Wordpress
Copyright (C) 2007 Michael J. Giarlo
This program 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 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
HISTORY:
Version: 0.1, 2007-01-17 [Michael J. Giarlo]
Version: 1.0, 2007-12-15 "
Version: 1.1, 2008-11-16 [Mark Matienzo and Michael J. Giarlo]
*/
add_action('wp_head', 'linkpurl_link');
add_action('admin_menu', 'linkpurl_admin_menu');
add_option('linkpurl_pid', 'http://change.this.now', 'A persistent identifier for your blog. In order for partial redirects to work, omit the final slash character.');
add_option('linkpurl_partialRedirect', 'off', 'Set to on to use PURL partial redirects');
function linkpurl_link() {
echo " \n";
$partial = ('on' == get_option('linkpurl_partialRedirect')) ? $_SERVER["REQUEST_URI"] : '';
echo ' ' . "\n";
}
function linkpurl_admin_menu() {
if ( function_exists('add_options_page') ) {
add_options_page('LinkPURL Configuration', 'LinkPURL', 9, __FILE__, 'linkpurl_manage');
}
}
function linkpurl_manage() {
if ( isset($_POST['linkpurl_pid']) || isset($_POST['linkpurl_partialRedirect']) ) {
update_option('linkpurl_pid', $_POST['linkpurl_pid']);
update_option('linkpurl_partialRedirect', $_POST['linkpurl_partialRedirect']);
echo '