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<?php

/**
 * Implementation of hook_token_list():
 * Provide a user readable list of filefield tokens.
 */
function filefield_token_list($type = 'all') {
  if ($type == 'field' || $type == 'all') {
    $tokens = array();
    $tokens['file']['filefield-fid']                = t("File ID");
    $tokens['file']['filefield-description']        = t("File description");
    $tokens['file']['filefield-filename']           = t("File name");
    $tokens['file']['filefield-filepath']           = t("File path");
    $tokens['file']['filefield-filemime']           = t("File MIME type");
    $tokens['file']['filefield-filesize']           = t("File size (in bytes)");
    $tokens['file']['filefield-filesize_formatted'] = t("File size (pretty printed)");
    $tokens['file']['filefield-view']               = t("Fully formatted HTML file tag");
    $tokens['file']['filefield-onlyname']           = t("File name without extension.");
    $tokens['file']['filefield-extension']          = t("File extension");
    return $tokens;
  }
}

/**
 * Implementation of hook_token_values():
 * Provide the concrete token values for a given file item.
 */
function filefield_token_values($type, $object = NULL) {
  if ($type == 'field') {
    $item = $object[0];
    $tokens['filefield-fid']                = $item['fid'];
    $tokens['filefield-description']        = isset($item['data']['description']) ? $item['data']['description'] : '';
    $tokens['filefield-filename']           = $item['filename'];
    $tokens['filefield-filepath']           = $item['filepath'];
    $tokens['filefield-filemime']           = $item['filemime'];
    $tokens['filefield-filesize']           = $item['filesize'];
    $tokens['filefield-filesize_formatted'] = format_size($item['filesize']);
    $tokens['filefield-view']               = $item['view'];
    $double_extensions = array('tar.gz', 'tar.bz2');
    foreach ($double_extensions as $ext) {
      $length = strlen($ext) + 1;
      $filename = drupal_strtolower($item['filename']);
      $pos = strrpos($filename, '.'. $ext);
      if ($pos !== FALSE && strlen($filename) - $pos == $length) {
        $tokens['filefield-onlyname']  = substr($item['filename'], 0, $pos);
        $tokens['filefield-extension'] = $ext;
        break;
      }
    }
    if (!isset($tokens['filefield-extension'])) {
      $info = pathinfo($item['filename']);
      $tokens['filefield-onlyname'] = $info['filename'];
      $tokens['filefield-extension'] = $info['extension'];
    }
    return $tokens;  
  }
}