\n" .
               "first page here.\n" .
               "%separator\n" .
               "second page here.\n" .
               "%separator\n" .
               "more pages here.\n", array('%separator' => PAGING_SEPARATOR));
  }
}

function paging_menu($maycache) {

  if ($maycache) {
    $items[] = array(
      'path' => 'admin/settings/paging',
      'title' => t('Paging'),
      'description' => t('Choose what node types to enable paging for & change the page breaking string'),
      'callback' => 'drupal_get_form',
      'callback arguments' => 'paging_settings',
      'access' => user_access('administer site configuration'),
      'type' => MENU_NORMAL_ITEM,
    );
  }

  return $items;
}

/*
 * Implementation of hook_settings()
 */
function paging_settings() {
  $form = array();

  $form['paging_config'] = array(
    '#type' => 'fieldset',
    '#title' => t('Paging settings'),
  );
  $form['paging_config']['paging_separator'] = array(
    '#type' => 'textfield',
    '#title' => t('Separator'),
    '#size' => 20,
    '#maxlength' => 255,
    '#default_value' => PAGING_SEP_STRING,
    '#description' => t('Paging separator string. Enter the part between [ and ]. e.g. Put "pagebreak" for [pagebreak].'), //old text: You should use an HTML tag that will render reasonably when paging is not enabled such as <!--pagebreak--> or <HR />
  );
  $form['paging_config']['paging_read_more_enabled'] = array(
    '#type' => 'checkbox',
    '#title' => t('Link read more to next page'),
    '#description' => t('If enabled, "read more" link under teasers will link to the next content page. Note: Only works if teaser and first page have the same content. Usage not recommended, unless you are willing to customize it with your theme.'),
    '#default_value' => variable_get('paging_read_more_enabled', 0)
  );
  $form['paging_config']['paging_pagelist_enabled'] = array(
    '#type' => 'checkbox',
    '#title' => t('Enable pages listing'),
    '#description' => t('When enabled, a titled list of pages is shown below the content. Use the following syntax to give titles to each page:
[!separator title=Lorem Ipsum...].
Use the following for the first page\'s title:
[first!separator title=Lorem Ipsum...].
Default titles are "Page 1, Page 2" and so on.', array('!separator' => PAGING_SEP_STRING)),
    '#default_value' => variable_get('paging_pagelist_enabled', 1),
  );
  $form['paging_config']['paging_node_types_enabled'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Node Types'),
    '#description' => t('Set the node types you want to enable Paging for.'),
    '#default_value' => variable_get('paging_node_types_enabled', array()),
    '#options' => node_get_types('names'),
  );

  return system_settings_form($form);
}

/*
 * Implementation of hook_nodeapi()
 */
function paging_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
  if (isset($node->field_body[0]['view'])) { // support for CCK
    _paging_nodeapi($node,
                    $node->field_body[0]['view'],
                    $node->field_teaser[0]['view'],
                    $op, $teaser, $page);
  } elseif (isset($node->field_body[0]['value'])) { // support for CCK
    _paging_nodeapi($node,
                    $node->field_body[0]['value'],
                    $node->field_teaser[0]['value'],
                    $op, $teaser, $page);
  } else {
    _paging_nodeapi($node, $node->body, $node->teaser, $op, $teaser, $page);
  }
}

/*
 * Helper function for paging_nodeapi()
 */
function _paging_nodeapi(&$node, &$nodebody, &$nodeteaser, $op, $teaser, $page) {
  switch ($op) {
    case 'load':
      $node->pages = preg_split('/\['. PAGING_SEP_STRING .'(|\s+|\s+[^][=]+=([^][]+))\]/', $nodebody);
      //$node->pages = explode(PAGING_SEPARATOR, $nodebody);
      $node->pages_count = count($node->pages);
      break;

    case 'view':
	  $node_type = in_array($node->type, variable_get('paging_node_types_enabled', array()), TRUE);
      if (!$node->in_preview && $node_type && ereg('', $teaser ? $nodeteaser : $nodebody)) {
        $element = 1;
        if (!$teaser && $node->pages_count > 1 && arg(2) != 'print' && arg(2) != 'full') {
          global $pager_page_array, $pager_total;
          $page = isset($_GET['page']) ? $_GET['page'] : '';
          $pager_page_array = explode(',', $page);
          $pager_total[$element] = $node->pages_count;
          $page = isset($pager_page_array[$element]) ? $pager_page_array[$element] : 0;

          preg_match_all('/\['. PAGING_SEP_STRING .'(|\s+|\s+title=([^][]+))\]/', $nodebody, $pagenames); //'/\[pagebreak(|\s+|\s+[^][=]+=([^][]+))\]/'
          foreach ($pagenames[2] as $key => $pagename) {
            $sitename = $pagename ? $pagename : 'Page '. ($key + 2);
            if ($key == 0) {
              preg_match('/\[(first|FIRST)'. PAGING_SEP_STRING .'\s+title=([^][]+)\]/', $nodebody, $first);
              $first_name = $first[2] ? $first[2] : 'Page 1';
              //$links[] = array('title' => $first_name, 'href' => drupal_get_path_alias('node/'. $node->nid), 'query' => 'page=0,0');
              $links[] = l($first_name, drupal_get_path_alias('node/'. $node->nid), array(), 'page=0,0');
              if ($page == 0) $node->pages[$page] = str_replace($first[0], '', $node->pages[$page]);
            }
            //$links[] = array('title' => $sitename, 'href' => drupal_get_path_alias('node/'. $node->nid), 'query' => 'page=0,'. ($key + 1));
            $links[] = l($sitename, drupal_get_path_alias('node/'. $node->nid), array(), 'page=0,'. ($key + 1));
          }

          $node->content['body']['#value'] = check_markup($node->pages[$page], $node->format, false);
          if (variable_get('paging_pagelist_enabled', 1)) {
            $node->content['body']['#value'] .= theme('item_list', $links);
          }
          $node->content['body']['#value'] .= theme('pager', NULL, 1, $element);
        }
        elseif ($teaser && $node->pages_count > 1 && strlen($node->teaser) > strlen($node->pages[0])) {
          // check to see if the teaser is longer than our first page.
          $node->content['body']['#value'] = check_markup($node->pages[0], $node->format, false);
          $node->pagemore = true;
        }
      }
      break;
  }
}

/**
 * Implementation of hook_link().
 */
function paging_link($type, $node = 0, $main = 0) {
  $links = array();

  if ($type == 'node') {
    if (array_key_exists('links', $node)) {
      $links = $node->links;
    }

    if ($main == 1 && $node->teaser && $node->pagemore && variable_get('paging_read_more_enabled', 0)) {
	  $links['node_read_more'] = array(
        'title' => t('Read more'),
        'href' => drupal_get_path_alias("node/$node->nid"),
        'attributes' => array('title' => t('Read the rest of this posting.'), 'class' => 'read-more-paging'),
        'query' => 'page=0,1'
      );
    }
  }

  return $links;
}

/**
 * Implementation of hook_filter().
 */
function paging_filter($in_op, $in_delta = 0, $in_format = -1, $in_text = '') {
  switch ($in_op) {
    case 'list':
      return array(t("Paging"));
    case 'description':
      return t('Allows content to be broken up into pages, using the %separator tag, configurable ' . l('here', 'admin/settings/paging') . '.', array('%separator' => PAGING_SEPARATOR));

    // the filter gets called before the nodeapi 'view' so,
    // add a comment to the body to inform the nodapi to apply the filter
    case 'process':
      return '' . $in_text;

    default:
      return $in_text;
  }
}

/**
 * Implementation of hook_filter_tips().
 */
function paging_filter_tips($in_delta, $in_format, $in_is_long = FALSE) {
  if ($in_is_long) {
    return t('
Paging Help
') .  paging_help('admin/help#paging');
  }
  else {
    return t('Use %separator to create page breaks.', array('%separator' => PAGING_SEPARATOR));
  }
}