<?php
// $Id$

/**
 * @file
 * Provides FileField Paths integration with the Path Filter module.
 */

function pathfilter_filefield_paths_process_file($new, &$file, $settings, &$node, &$update) {
  if ($new && dirname($file['filepath']['new']) != dirname($file['filepath']['old']) || $file['filename']['new'] != $file['filename']['old']) {
    $file_directory_path = variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC ? file_directory_path() : 'system/files';
    $pattern = array(
      'regex' => 'files:([^"]*?)' . str_replace('/', '\/', str_replace(file_directory_path() . '/', '', $file['filepath']['old'])),
      'regex_enc' => 'files:([^"]*?)' . str_replace('/', '\/', str_replace(drupal_urlencode(file_directory_path()) . '/', '', drupal_urlencode($file['filepath']['old']))),
      'replace' => 'files:$1' . str_replace(file_directory_path() . '/', '', $file['filepath']['new']),
    );

    $fields = array();
    // Get Node fields.
    if (isset($node->body)) {
      $fields += array(
        'body' => &$node->body,
        'teaser' => &$node->teaser,
      );
    }

    // Get CCK fields.
    if (module_exists('content')) {
      $content_type = content_types($node->type);
      foreach ($content_type['fields'] as $name => $field) {
        if ($field['type'] == 'text' && is_array($node->{$name})) {
          foreach ($node->{$name} as $key => $value) {
            if (isset($node->{$name}[$key]['value'])) {
              $fields["{$name}_{$key}"] = &$node->{$name}[$key]['value'];
            }
          }
        }
      }
    }

    // Loop through all fields and process filter.
    foreach ($fields as $field => &$data) {
      ${$field} = (preg_match('/'. $pattern['regex'] .'/s', $data))
        ? preg_replace('/'. $pattern['regex'] .'/s', $pattern['replace'], $data)
        : preg_replace('/'. $pattern['regex_enc'] .'/s', $pattern['replace'], $data);

      if (${$field} != $data) {
        $data = ${$field};
        // Mark node for update.
        if ($field == 'body' || $field == 'teaser') {
          $update->node = TRUE;
        }
      }
    }
  }
}