function _locale_import_parse_plural_forms

Parses a Plural-Forms entry from a Gettext Portable Object file header.

Parameters

string $plural_forms: A string containing the Plural-Forms entry.

string $filepath: A string containing the filepath.

Return value

An array containing the number of plurals and a formula in PHP for: computing the plural form.

Related topics

File

core/includes/gettext.inc, line 612

Gettext parsing and generating API.

Code

function _locale_import_parse_plural_forms($plural_forms, $filepath) {
  // First, delete all whitespace.
  $plural_forms = strtr($plural_forms, array(" " => "", "\t" => ""));

  // Select the parts that define nplurals and plural.
  $nplurals = strstr($plural_forms, "nplurals=");
  if (strpos($nplurals, ";")) {
    $nplurals = substr($nplurals, 9, strpos($nplurals, ";") - 9);
  }
  else {
    return FALSE;
  }
  $plural = strstr($plural_forms, "plural=");
  if (strpos($plural, ";")) {
    $plural = substr($plural, 7, strpos($plural, ";") - 7);
  }
  else {
    return FALSE;
  }

  // Get PHP version of the plural formula.
  $plural = _locale_import_parse_arithmetic($plural);

  if ($plural !== FALSE) {
    return array($nplurals, $plural);
  }
  else {
    backdrop_set_message(t('The translation file %filepath contains an error: the plural formula could not be parsed.', array('%filepath' => $filepath)), 'error');
    return FALSE;
  }
}