)?\s*\[TOC(?::(\w+))?([^\]]+)?\]\s*(?:<\/p>)?/i', $text, $matches) ) {
return $text;
}
$match = $matches[0];
$type = (!empty($matches[1])) ? drupal_strtolower($matches[1]) : 'ul';
$title = (!empty($matches[2])) ? trim($matches[2]) : '';
if (empty($title)) {
$title = variable_get('toc_filter_'. $type . '_default_title', '');
}
// Convert HTML tag types to readable strings.
switch ($type) {
case 'ol': $type = 'number'; break;
case 'ul': $type = 'bullet'; break;
}
$is_numbered = ($type == 'number' || $type == 'faq') ? TRUE : FALSE;
$header_tag = variable_get('toc_filter_header_tag', 'h3');
preg_match_all('/(<'. $header_tag .'[^>]*>)(.*?)(<\/'. $header_tag .'>)/s', $text, $header_matches);
$links_items = array();
$links = array();
for ($i=0, $len=count($header_matches[0]); $i<$len; $i++) {
$header_match = $header_matches[0][$i];
$open_tag = $header_matches[1][$i];
$header_title = $header_matches[2][$i];
$close_tag = $header_matches[3][$i];
$header_id = preg_replace('/[^-a-z0-9]+/', '-', drupal_strtolower(trim($header_title)));
// Add header class to open tag
$open_tag_attributes = toc_filter_parse_tag_attributes($open_tag) + array('class' => '');
$open_tag_attributes['class'] .= ((empty($open_tag_attributes['class'])) ? '' : ' ') . 'toc-header toc-header-' . $type;
$header_replace = '<' . $header_tag . drupal_attributes($open_tag_attributes) . '>' .
'' .
(($is_numbered) ? '' . ($i+1) . '. ':'') .
$header_title .
$close_tag;
// Must manually build each link item since l() function can't generate just an anchor link (aka #anchor).
$links[] = ''. strip_tags($header_title, '
') .'';
// Add anchor before header
$back_to_top = theme('toc_filter_back_to_top', array('class' => ($i == 0) ? 'first' : ''));
$text = str_replace($header_match, $back_to_top . $header_replace, $text);
}
// If no TOC links found then just remove the [toc] tag and return the text.
if (empty($links)) {
return str_replace($match, '', $text);
}
// Theme list
$links_list_type = ($is_numbered) ? 'ol' : 'ul';
$links_list_attributes = array('class' => 'toc-filter-links');
$links_list = theme('item_list', array('items' => $links, 'title' => check_plain($title), 'type' => $links_list_type, 'attributes' => $links_list_attributes));
// Theme toc
$output = theme('toc_filter', array('type' => $type, 'content' => $links_list));
$text = str_replace($match, $output, $text);
// Add closing back to top.
$text .= theme('toc_filter_back_to_top', array('class' => 'last'));
return $text;
}
/**
* TOC filter settings callback.
*/
function _toc_filter_settings_callback() {
$form = array();
$form['toc_filter_settings'] = array(
'#type' => 'fieldset',
'#title' => t('TOC filter'),
'#description' => t('To configure this filter, please goto the global TOC filter site configuration form.', array('@href' => url('admin/config/content/toc_filter'))),
'#collapsible' => TRUE,
'#collapsed' => FALSE,
);
return $form;
}
////////////////////////////////////////////////////////////////////////////////
// Utility functions
////////////////////////////////////////////////////////////////////////////////
/**
* Parses an xhtml tag's attributes into an associated array.
*/
function toc_filter_parse_tag_attributes($tag) {
preg_match_all('/(\w+)\s*=\s*"([^"]+)"/', $tag, $matches);
$attributes = array();
for ($i=0, $len=count($matches[1]); $i < $len; $i++) {
$attributes[ $matches[1][$i] ] = htmlspecialchars_decode($matches[2][$i], ENT_QUOTES);
}
return $attributes;
}
////////////////////////////////////////////////////////////////////////////////
// Theme functions
////////////////////////////////////////////////////////////////////////////////
/**
* Implements hook_theme().
*/
function toc_filter_theme() {
return array(
'toc_filter' => array(
'variables' => array(
'type' => 'ul',
'content' => '',
),
),
'toc_filter_back_to_top' => array(
'variables' => array(
'class' => '',
),
),
);
}
/**
* Format back to top anchor link.
*/
function theme_toc_filter_back_to_top($variables) {
$class = (($variables['class']) ? ' ' . $variables['class'] : '');
return '