public static function PHPUnit_Util_Diff::diffToArray

Returns the diff between two arrays or strings as array.

every array-entry containts two elements:

• [0] => string $token
• [1] => 2|1|0

• 2: REMOVED: $token was removed from $from
• 1: ADDED: $token was added to $from
• 0: OLD: $token is not changed in $to

Parameters

array|string $from:

array|string $to:

Return value

array

File

drupal/core/vendor/phpunit/phpunit/PHPUnit/Util/Diff.php, line 148

Class

PHPUnit_Util_Diff

Diff implementation.

Code

public static function diffToArray($from, $to) {
  preg_match_all('(\\r\\n|\\r|\\n)', $from, $fromMatches);
  preg_match_all('(\\r\\n|\\r|\\n)', $to, $toMatches);
  if (is_string($from)) {
    $from = preg_split('(\\r\\n|\\r|\\n)', $from);
  }
  if (is_string($to)) {
    $to = preg_split('(\\r\\n|\\r|\\n)', $to);
  }
  $start = array();
  $end = array();
  $fromLength = count($from);
  $toLength = count($to);
  $length = min($fromLength, $toLength);
  for ($i = 0; $i < $length; ++$i) {
    if ($from[$i] === $to[$i]) {
      $start[] = $from[$i];
      unset($from[$i], $to[$i]);
    }
    else {
      break;
    }
  }
  $length -= $i;
  for ($i = 1; $i < $length; ++$i) {
    if ($from[$fromLength - $i] === $to[$toLength - $i]) {
      array_unshift($end, $from[$fromLength - $i]);
      unset($from[$fromLength - $i], $to[$toLength - $i]);
    }
    else {
      break;
    }
  }
  $common = self::longestCommonSubsequence(array_values($from), array_values($to));
  $diff = array();
  $line = 0;
  if (isset($fromMatches[0]) && $toMatches[0] && count($fromMatches[0]) === count($toMatches[0]) && $fromMatches[0] !== $toMatches[0]) {
    $diff[] = array(
      '#Warning: Strings contain different line endings!',
      0,
    );
  }
  foreach ($start as $token) {
    $diff[] = array(
      $token,
      0,
    );
  }
  reset($from);
  reset($to);
  foreach ($common as $token) {
    while (($fromToken = reset($from)) !== $token) {
      $diff[] = array(
        array_shift($from),
        2,
      );
    }
    while (($toToken = reset($to)) !== $token) {
      $diff[] = array(
        array_shift($to),
        1,
      );
    }
    $diff[] = array(
      $token,
      0,
    );
    array_shift($from);
    array_shift($to);
  }
  while (($token = array_shift($from)) !== NULL) {
    $diff[] = array(
      $token,
      2,
    );
  }
  while (($token = array_shift($to)) !== NULL) {
    $diff[] = array(
      $token,
      1,
    );
  }
  foreach ($end as $token) {
    $diff[] = array(
      $token,
      0,
    );
  }
  return $diff;
}