Patch file to modify the "paging" module in Drupal to work with a specific CCK field

Paging for CCK

Index: modules/paging/paging.module
===================================================================
--- modules/paging/paging.module	(revision 221)
+++ modules/paging/paging.module	(working copy)
@@ -408,17 +408,18 @@
  * Implementation of hook_nodeapi().
  */
 function paging_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
+  
   // Act only when paging is enabled for node's type and when node is being rendered for normal views.
   if (variable_get('paging_enabled_' . $node->type, 0) && ($node->build_mode == NODE_BUILD_NORMAL)) {
     switch ($op) {
       case 'load':
       case 'view':
       case 'alter':
-        // Support for CCK.
-        if (isset($node->field_body[0]['view'])) {
-          _paging_nodeapi($node,
-                          $node->field_body[0]['view'],
-                          $node->field_teaser[0]['view'],
+        // Support for CCK -- hard coded with the page_body right now.
+        if (isset($node->field_page_body[0]['value'])) {
+          _paging_cck_nodeadpi($node,
+                          $node->field_page_body[0]['value'],
+                          'field_page_body',
                           $op, $teaser, $page);
         }
         // Support for CCK.
@@ -440,6 +441,107 @@
   }
 }
 
+function _paging_cck_nodeadpi(&$node, &$node_field, $field_name, $op, $teaser, $page) {
+  switch ($op) {
+    case 'load':
+      $paging_separator = variable_get('paging_separator_' . $node->type, '<!--pagebreak-->');
+      $node->pages = explode($paging_separator, $node_field);
+      $node->page_count = count($node->pages);
+      break;
+    case 'view':
+    // Fetch a structured array containing page names.
+    $node->page_names = paging_fetch_names($node_field);
+    
+    if (strpos($node_field, '<!--pagebreak-->') !== FALSE) {
+      // Element value to distinguish between multiple pagers on one page.
+      $element = 1;
+      $page = isset($_GET['page']) ? $_GET['page'] : '';
+      
+      // Only do paging
+      // a) if not in teaser mode;
+      // b) if there is more than one page;
+      // c) if a printable version is not being requested; or
+      // d) if a non-paged version is not being explicitly requested
+      //    e.g. http://www.example.com/node/1?page=full or node/1/full.
+      if (!$teaser && $node->page_count > 1 && arg(2) != 'print' && arg(2) != 'full' && $page != 'full') {
+        global $pager_page_array, $pager_total;
+        $pager_page_array = explode(',', $page);
+        $pager_total[$element] = $node->page_count;
+        $page = isset($pager_page_array[$element]) ? $pager_page_array[$element] : 0;
+
+        // Put the current page contents into the node body.
+        $node->content['field_page_body']['field']['items'][0]['#item']['safe'] = check_markup($node->pages[$page], $node->field_page_body[0]['format'], FALSE);
+        
+        // Mapping the pages in $node->page_names and $node->page_count to set number of pages as the array length.
+        $fake = array_fill(0, ($node->page_count - 1) + 1, '');
+        $length = count($fake) > count($node->page_names) ? count($fake) : count($node->page_names);
+        for ($i=0; $i<$length; ++$i) {
+          $merged[$i] = $node->page_names[$i];
+        }
+        // Fill the empty names with node title and page number.
+        $node->page_names = _paging_populate_empty_names($merged, $node->title);
+
+        // For use in AJAX.
+        $pager_id = 'paging-pager-' . $node->nid;
+
+        $return_json = FALSE;
+        // Capture pager JSON request
+        if (isset($_REQUEST['paging_json_request']) && $_REQUEST['paging_json_request'] == $pager_id) {
+          // Unset before calling a pager theming function to prevent unecessarily cluttered link URLs.
+          unset($_REQUEST['paging_json_request']);
+          $return_json = TRUE;
+        }
+
+        // Load the page navigation links into $node->paging. Also accessible in node theming.
+        $node->paging = paging_pager_style($node, $element);
+
+        // Find the position to display the page navigation links at.
+        $position = variable_get('paging_pager_widget_position_' . $node->type, 'below');
+
+        if ($position == 'below' || $position == 'both') {
+          $node->content['paging']['#value'] = $node->paging;
+          // Get possible manual weight for paging field from CCK setting.
+          $node->content['paging']['#weight'] = $node->content['field_page_body']['#weight'] + 1;
+        }
+        
+        $node->content['field_page_body']['#weight'] = 0;
+
+        $module_path = drupal_get_path('module', 'paging');
+        drupal_add_css($module_path . '/paging.css', 'module');
+        if (variable_get('paging_ajax_enabled_' . $node->type, 0)) {
+          _paging_content_wrap($node);
+          if ($return_json) {
+            $content = array(
+                'paging_above' => $node->content['paging_above'],
+                'body' => $node->content['field_page_body'],
+                'paging' => $node->content['paging'],
+            );
+            $response = array(
+              'content' => drupal_render($content),
+            );
+            // Exit with replacement data.
+            exit(drupal_json($response));
+          }
+          // Add scripts for AJAX driven page loading.
+          drupal_add_js($module_path . '/paging.js', 'module');
+        }
+
+        // Set a global value for block visibility.
+        $GLOBALS['_paging_display_block'] = TRUE;
+
+        if (variable_get('paging_name_title_' . $node->type, 0) && !empty($page)) {
+          // Set the browser title to page's name.
+          drupal_set_title($node->page_names[$page]);
+        }
+      }
+      // Remove internal <!--paging_filter--> tag from final output.
+      $node->content['field_page_body']['field']['items'][0]['#item']['safe'] = str_replace('<!--pagebreak-->', '', $node->content['field_page_body']['field']['items'][0]['#item']['safe']);
+    }
+    
+    break;    
+  }
+}
+
 /**
  * Helper function for paging_nodeapi().
  */