function Diff::lcs

Same name in other branches
  1. 8.9.x core/lib/Drupal/Component/Diff/Diff.php \Drupal\Component\Diff\Diff::lcs()
  2. 10 core/lib/Drupal/Component/Diff/Diff.php \Drupal\Component\Diff\Diff::lcs()

Compute the length of the Longest Common Subsequence (LCS).

This is mostly for diagnostic purposed.

Return value

int The length of the LCS.

1 call to Diff::lcs()
Diff::check in core/lib/Drupal/Component/Diff/Diff.php
Check a Diff for validity.

File

core/lib/Drupal/Component/Diff/Diff.php, line 82

Class

Diff
Class representing a 'diff' between two sequences of strings. @todo document @subpackage DifferenceEngine

Namespace

Drupal\Component\Diff

Code

public function lcs() {
    $lcs = 0;
    foreach ($this->edits as $edit) {
        if ($edit->type == 'copy') {
            $lcs += sizeof($edit->orig);
        }
    }
    return $lcs;
}

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