function _drush_preflight_columns

8.0.x _drush_preflight_columns()
7.x _drush_preflight_columns()
master _drush_preflight_columns()
1 call to _drush_preflight_columns()
drush_preflight in includes/
During the initialization of Drush, this is the first step where we load our configuration and commandfiles, and select the site we are going to operate on; however, we take no irreversible actions (e.g. site bootstrapping). This allows commands that…


includes/, line 411
Preflight, postflight and shutdown code.


function _drush_preflight_columns() {
  if (!($columns = getenv('COLUMNS'))) {
    // Trying to export the columns using stty.
    exec('stty size 2>&1', $columns_output, $columns_status);
    if (!$columns_status) {
      $columns = preg_replace('/\d+\s(\d+)/', '$1', $columns_output[0], -1, $columns_count);

    // If stty fails and Drush us running on Windows are we trying with mode con.
    if (($columns_status || !$columns_count) && drush_is_windows()) {
      $columns_output = array();
      exec('mode con', $columns_output, $columns_status);
      if (!$columns_status && is_array($columns_output)) {
        $columns = (int) preg_replace('/\D/', '', $columns_output[4], -1, $columns_count);
      else {
        drush_log(dt('Drush could not detect the console window width. Set a Windows Environment Variable of COLUMNS to the desired width.'), LogLevel::WARNING);

    // Failling back to default columns value
    if (empty($columns)) {
      $columns = 80;
  // If a caller wants to reserve some room to add additional
  // information to the drush output via post-processing, the
  // --reserve-margin flag can be used to declare how much
  // space to leave out.  This only affects drush functions
  // such as drush_print_table() that wrap the output.
  $columns -= drush_get_option('reserve-margin', 0);
  drush_set_context('DRUSH_COLUMNS', $columns);