modification to add appropriate icon before links for displayed attached files

I made the following modification to the ATTACHMENT.MODULE
// $Id: attachment.module,v 1.7.2.1 2005/10/28 21:38:23 ccourtne Exp $

I added some code to append an image icon at the beginning of the linked item. If you put icons in a folder called "images", and name the files "***_icon.gif", the correct GIF will appear depending on the file extension. If you don't have a gif for a certain extension, nothing will appear (it seems, at least in firefox). So put in icons named "pdf_icon.gif" "doc_icon.gif" etc. into the folder images.

The entire function is pasted below, but I only changed the line:
$text = empty($attachment['title']) ? ('<img src="/images/' . (substr($attachment['filename'],-3)) . '_icon.gif"> ' . $attachment['filename']) : ('<img src="/images/' . (substr($attachment['filename'],-3)) . '_icon.gif"> ' . $attachment['title'] . ' (' . $attachment['filename'] . ')');

Hope this is useful to folks. I'm VERY new at Drupal, so if the experts out there have a more "drupal-ized" general modification that isn't so hard-coded, please feel free to contribute.

can view: http://www.livablestreets.info to see implementation.

Jeff

/**
 * Formats a list of attachments for a given node.
 */
function theme_attachments($node) {

  $output  = "<div class=\"attachments\">\n";

  $attributes['class'] = 'attachment-list';

  $header[0]['data'] = t('Filename/Title');
  $header[0]['class'] = 'filename';
  $header[1]['data'] = t('Size');
  $header[1]['class'] = 'size';

  foreach ((array)$node->attachments as $attachment) {
    if (!$attachment['hidden'] && !$attachment['deleted']) {
      $text = empty($attachment['title']) ? ('<img src="/images/' . (substr($attachment['filename'],-3)) . '_icon.gif"> ' . $attachment['filename']) : ('<img src="/images/' . (substr($attachment['filename'],-3)) . '_icon.gif"> ' . $attachment['title'] . ' (' . $attachment['filename'] . ')');
      $attrib = empty($attachment['description']) ? array() : array('title' => $attachment['description']);
      $row[0]['data'] = l($text, module_invoke('filemanager', 'url', $attachment['fid']), $attrib);
      $row[0]['data'] = module_invoke('filemanager', 'l', $text, $attachment['fid'], FALSE, $attrib, TRUE);
      $row[0]['class'] = 'filename';
      $row[1]['data'] = format_size($attachment['size']);
      $row[1]['class'] = 'size';
      $rows[] = $row;
    }
  }
  if (count($rows) > 0) {
    $output .= theme('table', $header, $rows, $attributes);
  }

  $output .= "</div>\n";

  return $output;
}