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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 fclose; use function fopen; use function fwrite; use function stream_get_contents; use function substr; use SebastianBergmann\Diff\Differ; /* * Builds a diff string representation in a loose unified diff format * listing only changes lines. Does not include line numbers. / final class DiffOnlyOutputBuilder implements DiffOutputBuilderInterface { /* * @var string / private $header; public function __construct(string $header = "--- Original\n+++ New\n") { $this->header = $header; } public function getDiff(array $diff): string { $buffer = fopen('php://memory', 'r+b'); if ('' !== $this->header) { fwrite($buffer, $this->header); if ("\n" !== substr($this->header, -1, 1)) { fwrite($buffer, "\n"); } } foreach ($diff as $diffEntry) { if ($diffEntry[1] === Differ::ADDED) { fwrite($buffer, '+' . $diffEntry[0]); } elseif ($diffEntry[1] === Differ::REMOVED) { fwrite($buffer, '-' . $diffEntry[0]); } elseif ($diffEntry[1] === Differ::DIFF_LINE_END_WARNING) { fwrite($buffer, ' ' . $diffEntry[0]); continue; // Warnings should not be tested for line break, it will always be there } else { / Not changed (old) 0 */ continue; // we didn't write the non changs line, so do not add a line break either } $lc = substr($diffEntry[0], -1); if ($lc !== "\n" && $lc !== "\r") { fwrite($buffer, "\n"); // \No newline at end of file } } $diff = stream_get_contents($buffer, -1, 0); fclose($buffer); return $diff; } }