google drive file md5 listing

drive_md5_listing.gs

/**
 * Lists the files and their MD5 checksum into a logger run from script.google.com
 * 
 * Cobbled together from the HORRORS of google infinite api documentation.
 * - "Advanced Scripting" https://developers.google.com/apps-script/advanced/drive
 * - V2 drive query https://developers.google.com/drive/api/v2/search-files
 * - V2 file properties https://developers.google.com/drive/api/v2/reference/files/get
 
 */

// For bash: md5sum {*,**/*}

function listRootFolders() {
  var query = '"SOMEFOLDERID" in parents and trashed = false';
  var folders;
  var pageToken;
  do {
    folders = Drive.Files.list({
      q: query,
      maxResults: 100,
      pageToken: pageToken
    });
    if (folders.items && folders.items.length > 0) {
      for (var i = 0; i < folders.items.length; i++) {
        var folder_item = folders.items[i];
        Logger.log('%s %s %s', folder_item.md5Checksum, folder_item.title, folder_item.id);
      }
    } else {
      Logger.log('No folders found.');
    }
    pageToken = folders.nextPageToken;
  } while (pageToken);
}