<?php
// $Id: search_attachments_inline.module

/**
 * @file
 *
 * module implementing the Search Files API to search files
 * that have been uploaded as attachments to nodes
 */

/**
 * Implementation of hook_nodeapi().
 */
function search_attachments_inline_nodeapi($node, $op) {
  switch ($op) {
    case 'update index':
      return search_attachments_inline_node_update_index($node);
  }
}

/**
 * Implementation of hook_nodeapi('update index').
 */
function search_attachments_inline_node_update_index(&$node) {
  $combined_attachment_texts = array();

  // Select all filepaths associated with the node
  //$result = db_query("SELECT filepath FROM {files} where nid = %d", $node->nid);
  $files = array();

  if ($node->vid) {
    $result = db_query('SELECT * FROM {files} f INNER JOIN {upload} r ON f.fid = r.fid WHERE r.vid = %d ORDER BY r.weight, f.fid', $node->vid);
    while ($file = db_fetch_object($result)) {
      //$files[$file->fid] = $file;
      $content = _search_attachments_inline_get_file_contents($file);
      // Since we want the text of all the attachments for a single node, concatenate
      // each $attachment_text to the existing value.
      $combined_attachment_texts[] = $content;
    }
  }
  //Return the string containing all the concatenated text strings
  $string_to_index = implode(' ', $combined_attachment_texts);
  return $string_to_index;
}


/**
 * get the file contents using the helpers configured in the search_files_module
 */
function _search_attachments_inline_get_file_contents($file) {
  global $base_path;
  $path = $_SERVER['DOCUMENT_ROOT'] . $base_path . $file->filepath;
  $helpers = search_files_get_helpers();
  $pathinfo = (object)pathinfo($path);

  $file_exists = is_file($path);
  $helper_exists = array_key_exists($pathinfo->extension, $helpers);

  //krumo($path . ' | File exists: '. ($file_exists ? 'Yes' : 'No') .' | Helper exists: '. ($helper_exists ? 'Yes' : 'No'));
  if ($helper_exists && $file_exists) {
    $cmd = preg_replace('/%file%/', escapeshellarg($path), $helpers[$pathinfo->extension]);
    //krumo($cmd);
    $contents = shell_exec($cmd);
    //krumo($contents);
    return $contents;
  }
  return FALSE;
}