public function IngredientUnitFuzzymatch::getUnitFuzzymatch in Recipe 8.2

Returns a best-guess matched unit key for a unit of measure.

Parameters

string $subject: The unit of measure for which the function will search.

Return value

string|false The unit's key from configuration or FALSE if there was no match.

File

modules/ingredient/src/Utility/IngredientUnitFuzzymatch.php, line 38

Class

IngredientUnitFuzzymatch

Provides the ingredient.fuzzymatch service.

Namespace

Drupal\ingredient\Utility

Code

public function getUnitFuzzymatch($subject) {
  $unit_sets = $this->ingredientUnitConfig
    ->get('unit_sets');

  // Merge the unit sets into a single array for simplicity.
  $units = [];
  foreach ($unit_sets as $set) {
    $units = array_merge($units, $set['units']);
  }

  // Empty strings should use the default non-printing 'unit'.
  if (empty($subject)) {
    $subject = 'unit';
  }

  // First pass unit case must match exactly( T=Tbsp, t=tsp ).
  foreach ($units as $unit_key => $unit) {
    $patterns = [];

    // Add name pattern.
    $patterns[] = '^' . $unit['name'] . 's{0,1}$';
    if (isset($unit['plural'])) {

      // Add plural name pattern.
      $patterns[] = '^' . $unit['plural'] . 's{0,1}$';
    }
    if (isset($unit['abbreviation'])) {

      // Add abbreviation pattern.
      $patterns[] = '^' . $unit['abbreviation'] . 's{0,1}\\.{0,1}$';
    }
    if (isset($unit['aliases'])) {

      // Add alias patterns.
      foreach ($unit['aliases'] as $alias) {
        $patterns[] = '^' . trim($alias) . 's{0,1}\\.{0,1}$';
      }
    }
    if (preg_match("/" . implode('|', $patterns) . "/", $subject)) {
      return $unit_key;
    }
  }

  // Second pass unit case doesn't matter.
  foreach ($units as $unit_key => $unit) {
    $patterns = [];

    // Add name pattern.
    $patterns[] = '^' . $unit['name'] . 's{0,1}$';
    if (isset($unit['plural'])) {

      // Add plural name pattern.
      $patterns[] = '^' . $unit['plural'] . 's{0,1}$';
    }
    if (isset($unit['abbreviation'])) {

      // Add abbreviation pattern.
      $patterns[] = '^' . $unit['abbreviation'] . 's{0,1}\\.{0,1}$';
    }
    if (isset($unit['aliases'])) {

      // Add alias patterns.
      foreach ($unit['aliases'] as $alias) {
        $patterns[] = '^' . trim($alias) . 's{0,1}\\.{0,1}$';
      }
    }
    if (preg_match("/" . implode('|', $patterns) . "/i", $subject)) {
      return $unit_key;
    }
  }
  return FALSE;
}