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AbstractChunkOutputBuilder.php
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<?php declare(strict_types=1); /* * This file is part of sebastian/diff. * * (c) Sebastian Bergmann <sebastian@phpunit.de> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace SebastianBergmann\Diff\Output; use function count; abstract class AbstractChunkOutputBuilder implements DiffOutputBuilderInterface { /** * Takes input of the diff array and returns the common parts. * Iterates through diff line by line. */ protected function getCommonChunks(array $diff, int $lineThreshold = 5): array { $diffSize = count($diff); $capturing = false; $chunkStart = 0; $chunkSize = 0; $commonChunks = []; for ($i = 0; $i < $diffSize; $i++) { if ($diff[$i][1] === 0 /* OLD */) { if ($capturing === false) { $capturing = true; $chunkStart = $i; $chunkSize = 0; } else { $chunkSize++; } } elseif ($capturing !== false) { if ($chunkSize >= $lineThreshold) { $commonChunks[$chunkStart] = $chunkStart + $chunkSize; } $capturing = false; } } if ($capturing !== false && $chunkSize >= $lineThreshold) { $commonChunks[$chunkStart] = $chunkStart + $chunkSize; } return $commonChunks; } }
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