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function node_import_autodetect in Node import 6

Return an autodetected file format and file options for given file.

This checks which file format options cause the file to contain the most fields. The file options tested are the ones used by the user (last 5) and the builtin ones.

Parameters

$filepath: String. Path to file.

Return value

Array of file options.

Related topics

Node import file functions
1 call to node_import_autodetect()
node_import_add_form_submit_reload in ./node_import.admin.inc

File

./node_import.inc, line 1723
Public API of the Node import module.

Code

function node_import_autodetect($filepath) {
  global $user;
  if (user_access('administer imports')) {
    $result = db_query("SELECT DISTINCT file_options FROM {node_import_tasks} ORDER BY created DESC LIMIT 5");
  }
  else {
    $result = db_query("SELECT DISTINCT file_options FROM {node_import_tasks} WHERE uid = %d ORDER BY created DESC LIMIT 5");
  }
  $file_formats = node_import_format_options('file formats');
  while ($used_format = db_fetch_array($result)) {
    $file_formats[] = unserialize($used_format['file_options']);
  }
  $format = 'csv';
  $max_cols = 0;
  foreach ($file_formats as $file_format => $file_options) {
    $file_offset = 0;
    $num_rows = variable_get('node_import:detect:row_count', 5);
    $num_cols = 0;
    $fields = array();
    while ($num_rows > 0 && is_array($fields)) {
      list($new_offset, $fields) = node_import_read_from_file($filepath, $file_offset, $file_options);
      $num_rows--;
      if (is_array($fields) && count($fields) > $num_cols) {
        $num_cols = count($fields);
      }
    }
    if ($num_cols > $max_cols) {
      $format = $file_format;
      $max_cols = $num_cols;
    }
  }
  $file_options = $file_formats[$format];
  $file_options['file_format'] = is_int($format) ? '' : $format;
  return $file_options;
}