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<?php
/**
* Permalink settings administration panel.
*
* @package WordPress
* @subpackage Administration
*/

/** WordPress Administration Bootstrap */
require_once('admin.php');

if ( ! current_user_can('manage_options') )
wp_die(__('You do not have sufficient permissions to manage options for this blog.'));

$title = __('Permalink Settings');
$parent_file = 'options-general.php';

/**
* Display JavaScript on the page.
*
* @package WordPress
* @subpackage Permalink_Settings_Panel
*/
function add_js() {
?>
<script type="text/javascript">
//<![CDATA[
function GetElementsWithClassName(elementName, className) {
var allElements = document.getElementsByTagName(elementName);
var elemColl = new Array();
for (i = 0; i < allElements.length; i++) {
if (allElements[i].className == className) {
elemColl[elemColl.length] = allElements[i];
}
}
return elemColl;
}

function upit() {
var inputColl = GetElementsWithClassName('input', 'tog');
var structure = document.getElementById('permalink_structure');
var inputs = '';
for (i = 0; i < inputColl.length; i++) {
if ( inputColl[i].checked && inputColl[i].value != '') {
inputs += inputColl[i].value + ' ';
}
}
inputs = inputs.substr(0,inputs.length - 1);
if ( 'custom' != inputs )
structure.value = inputs;
}

function blurry() {
if (!document.getElementById) return;

var structure = document.getElementById('permalink_structure');
structure.onfocus = function () { document.getElementById('custom_selection').checked = 'checked'; }

var aInputs = document.getElementsByTagName('input');

for (var i = 0; i < aInputs.length; i++) {
aInputs[i].onclick = aInputs[i].onkeyup = upit;
}
}

window.onload = blurry;
//]]>
</script>
<?php
}
add_filter('admin_head', 'add_js');

include('admin-header.php');

$home_path = get_home_path();
$iis7_permalinks = iis7_supports_permalinks();

if ( isset($_POST['permalink_structure']) || isset($_POST['category_base']) ) {
check_admin_referer('update-permalink');

if ( isset($_POST['permalink_structure']) ) {
$permalink_structure = $_POST['permalink_structure'];
if (! empty($permalink_structure) )
$permalink_structure = preg_replace('#/+#', '/', '/' . $_POST['permalink_structure']);
$wp_rewrite->set_permalink_structure($permalink_structure);
}

if ( isset($_POST['category_base']) ) {
$category_base = $_POST['category_base'];
if (! empty($category_base) )
$category_base = preg_replace('#/+#', '/', '/' . $_POST['category_base']);
$wp_rewrite->set_category_base($category_base);
}

if ( isset($_POST['tag_base']) ) {
$tag_base = $_POST['tag_base'];
if (! empty($tag_base) )
$tag_base = preg_replace('#/+#', '/', '/' . $_POST['tag_base']);
$wp_rewrite->set_tag_base($tag_base);
}
}

$permalink_structure = get_option('permalink_structure');
$category_base = get_option('category_base');
$tag_base = get_option( 'tag_base' );

if ( $iis7_permalinks ) {
if ( ( ! file_exists($home_path . 'web.config') && win_is_writable($home_path) ) || win_is_writable($home_path . 'web.config') )
$writable = true;
else
$writable = false;
} else {
if ( ( ! file_exists($home_path . '.htaccess') && is_writable($home_path) ) || is_writable($home_path . '.htaccess') )
$writable = true;
else
$writable = false;
}

if ( $wp_rewrite->using_index_permalinks() )
$usingpi = true;
else
$usingpi = false;

$wp_rewrite->flush_rules();
?>

<?php if (isset($_POST['submit'])) : ?>
<div id="message" class="updated fade"><p><?php
if ( $iis7_permalinks ) {
if ( $permalink_structure && ! $usingpi && ! $writable )
_e('You should update your web.config now');
else if ( $permalink_structure && ! $usingpi && $writable)
_e('Permalink structure updated. Remove write access on web.config file now!');
else
_e('Permalink structure updated');
} else {
if ( $permalink_structure && ! $usingpi && ! $writable )
_e('You should update your .htaccess now.');
else
_e('Permalink structure updated.');
}
?>
</p></div>
<?php endif; ?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo esc_html( $title ); ?></h2>

<form name="form" action="options-permalink.php" method="post">
<?php wp_nonce_field('update-permalink') ?>

<p><?php _e('By default WordPress uses web <abbr title="Universal Resource Locator">URL</abbr>s which have question marks and lots of numbers in them, however WordPress offers you the ability to create a custom URL structure for your permalinks and archives. This can improve the aesthetics, usability, and forward-compatibility of your links. A <a href="http://codex.wordpress.org/Using_Permalinks">number of tags are available</a>, and here are some examples to get you started.'); ?></p>

<?php
$prefix = '';

if ( ! got_mod_rewrite() && ! $iis7_permalinks )
$prefix = '/index.php';

$structures = array(
'',
$prefix . '/%year%/%monthnum%/%day%/%postname%/',
$prefix . '/%year%/%monthnum%/%postname%/',
$prefix . '/archives/%post_id%'
);
?>
<h3><?php _e('Common settings'); ?></h3>
<table class="form-table">
<tr>
<th><label><input name="selection" type="radio" value="" class="tog" <?php checked('', $permalink_structure); ?> /> <?php _e('Default'); ?></label></th>
<td><code><?php echo get_option('home'); ?>/?p=123</code></td>
</tr>
<tr>
<th><label><input name="selection" type="radio" value="<?php echo esc_attr($structures[1]); ?>" class="tog" <?php checked($structures[1], $permalink_structure); ?> /> <?php _e('Day and name'); ?></label></th>
<td><code><?php echo get_option('home') . $prefix . '/' . date('Y') . '/' . date('m') . '/' . date('d') . '/sample-post/'; ?></code></td>
</tr>
<tr>
<th><label><input name="selection" type="radio" value="<?php echo esc_attr($structures[2]); ?>" class="tog" <?php checked($structures[2], $permalink_structure); ?> /> <?php _e('Month and name'); ?></label></th>
<td><code><?php echo get_option('home') . $prefix . '/' . date('Y') . '/' . date('m') . '/sample-post/'; ?></code></td>
</tr>
<tr>
<th><label><input name="selection" type="radio" value="<?php echo esc_attr($structures[3]); ?>" class="tog" <?php checked($structures[3], $permalink_structure); ?> /> <?php _e('Numeric'); ?></label></th>
<td><code><?php echo get_option('home') . $prefix ; ?>/archives/123</code></td>
</tr>
<tr>
<th>
<label><input name="selection" id="custom_selection" type="radio" value="custom" class="tog"
<?php if ( !in_array($permalink_structure, $structures) ) { ?>
checked="checked"
<?php } ?>
/>
<?php _e('Custom Structure'); ?>
</label>
</th>
<td>
<input name="permalink_structure" id="permalink_structure" type="text" value="<?php echo esc_attr($permalink_structure); ?>" class="regular-text code" />
</td>
</tr>
</table>

<h3><?php _e('Optional'); ?></h3>
<?php if ( $is_apache || $iis7_permalinks ) : ?>
<p><?php _e('If you like, you may enter custom structures for your category and tag <abbr title="Universal Resource Locator">URL</abbr>s here. For example, using <kbd>topics</kbd> as your category base would make your category links like <code>http://example.org/topics/uncategorized/</code>. If you leave these blank the defaults will be used.') ?></p>
<?php else : ?>
<p><?php _e('If you like, you may enter custom structures for your category and tag <abbr title="Universal Resource Locator">URL</abbr>s here. For example, using <code>topics</code> as your category base would make your category links like <code>http://example.org/index.php/topics/uncategorized/</code>. If you leave these blank the defaults will be used.') ?></p>
<?php endif; ?>

<table class="form-table">
<tr>
<th><label for="category_base"><?php _e('Category base'); ?></label></th>
<td><input name="category_base" id="category_base" type="text" value="<?php echo esc_attr($category_base); ?>" class="regular-text code" /></td>
</tr>
<tr>
<th><label for="tag_base"><?php _e('Tag base'); ?></label></th>
<td><input name="tag_base" id="tag_base" type="text" value="<?php echo esc_attr($tag_base); ?>" class="regular-text code" /></td>
</tr>
<?php do_settings_fields('permalink', 'optional'); ?>
</table>

<?php do_settings_sections('permalink'); ?>

<p class="submit">
<input type="submit" name="submit" class="button-primary" value="<?php esc_attr_e('Save Changes') ?>" />
</p>
</form>
<?php if ($iis7_permalinks) :
if ( isset($_POST['submit']) && $permalink_structure && ! $usingpi && ! $writable ) :
if ( file_exists($home_path . 'web.config') ) : ?>
<p><?php _e('If your <code>web.config</code> file were <a href="http://codex.wordpress.org/Changing_File_Permissions">writable</a>, we could do this automatically, but it isn&#8217;t so this is the url rewrite rule you should have in your <code>web.config</code> file. Click in the field and press <kbd>CTRL + a</kbd> to select all. Then insert this rule inside of the <code>/&lt;configuration&gt;/&lt;system.webServer&gt;/&lt;rewrite&gt;/&lt;rules&gt;</code> element in <code>web.config</code> file.') ?></p>
<form action="options-permalink.php" method="post">
<?php wp_nonce_field('update-permalink') ?>
<p><textarea rows="9" class="large-text readonly" name="rules" id="rules" readonly="readonly"><?php echo esc_html($wp_rewrite->iis7_url_rewrite_rules()); ?></textarea></p>
</form>
<p><?php _e('If you temporarily make your <code>web.config</code> file writable for us to generate rewrite rules automatically, do not forget to revert the permissions after rule has been saved.') ?></p>
<?php else : ?>
<p><?php _e('If the root directory of your site were <a href="http://codex.wordpress.org/Changing_File_Permissions">writable</a>, we could do this automatically, but it isn&#8217;t so this is the url rewrite rule you should have in your <code>web.config</code> file. Create a new file, called <code>web.config</code> in the root directory of your site. Click in the field and press <kbd>CTRL + a</kbd> to select all. Then insert this code into the <code>web.config</code> file.') ?></p>
<form action="options-permalink.php" method="post">
<?php wp_nonce_field('update-permalink') ?>
<p><textarea rows="18" class="large-text readonly" name="rules" id="rules" readonly="readonly"><?php echo esc_html($wp_rewrite->iis7_url_rewrite_rules(true)); ?></textarea></p>
</form>
<p><?php _e('If you temporarily make your site&#8217;s root directory writable for us to generate the <code>web.config</code> file automatically, do not forget to revert the permissions after the file has been created.') ?></p>
<?php endif; ?>
<?php endif; ?>
<?php else :
if ( $permalink_structure && ! $usingpi && ! $writable ) : ?>
<p><?php _e('If your <code>.htaccess</code> file were <a href="http://codex.wordpress.org/Changing_File_Permissions">writable</a>, we could do this automatically, but it isn&#8217;t so these are the mod_rewrite rules you should have in your <code>.htaccess</code> file. Click in the field and press <kbd>CTRL + a</kbd> to select all.') ?></p>
<form action="options-permalink.php" method="post">
<?php wp_nonce_field('update-permalink') ?>
<p><textarea rows="6" class="large-text readonly" name="rules" id="rules" readonly="readonly"><?php echo esc_html($wp_rewrite->mod_rewrite_rules()); ?></textarea></p>
</form>
<?php endif; ?>
<?php endif; ?>

</div>

<?php require('./admin-footer.php'); ?>
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