public function MappedDiff::__construct in Drupal 8

Same name and namespace in other branches

9 core/lib/Drupal/Component/Diff/MappedDiff.php \Drupal\Component\Diff\MappedDiff::__construct()
10 core/lib/Drupal/Component/Diff/MappedDiff.php \Drupal\Component\Diff\MappedDiff::__construct()

Constructor.

Computes diff between sequences of strings.

This can be used to compute things like case-insensitive diffs, or diffs which ignore changes in white-space.

Parameters

array $from_lines: An array of strings. (Typically these are lines from a file.)

array $to_lines: An array of strings.

array $mapped_from_lines: This array should have the same size number of elements as $from_lines. The elements in $mapped_from_lines and $mapped_to_lines are what is actually compared when computing the diff.

array $mapped_to_lines: This array should have the same number of elements as $to_lines.

Overrides Diff::__construct

1 call to MappedDiff::__construct()

WordLevelDiff::__construct in core/lib/Drupal/Component/Diff/WordLevelDiff.php: Constructor.

1 method overrides MappedDiff::__construct()

WordLevelDiff::__construct in core/lib/Drupal/Component/Diff/WordLevelDiff.php: Constructor.

File

core/lib/Drupal/Component/Diff/MappedDiff.php, line 34

Class

MappedDiff: FIXME: bad name. @todo document @private @subpackage DifferenceEngine

Namespace

Drupal\Component\Diff

Code

public function __construct($from_lines, $to_lines, $mapped_from_lines, $mapped_to_lines) {
  assert(sizeof($from_lines) == sizeof($mapped_from_lines));
  assert(sizeof($to_lines) == sizeof($mapped_to_lines));
  parent::__construct($mapped_from_lines, $mapped_to_lines);
  $xi = $yi = 0;
  for ($i = 0; $i < sizeof($this->edits); $i++) {
    $orig =& $this->edits[$i]->orig;
    if (is_array($orig)) {
      $orig = array_slice($from_lines, $xi, sizeof($orig));
      $xi += sizeof($orig);
    }
    $closing =& $this->edits[$i]->closing;
    if (is_array($closing)) {
      $closing = array_slice($to_lines, $yi, sizeof($closing));
      $yi += sizeof($closing);
    }
  }
}

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