annotate vendor/sebastian/diff/src/Parser.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 1fec387a4317
children
rev   line source
Chris@14 1 <?php declare(strict_types=1);
Chris@0 2 /*
Chris@12 3 * This file is part of sebastian/diff.
Chris@0 4 *
Chris@0 5 * (c) Sebastian Bergmann <sebastian@phpunit.de>
Chris@0 6 *
Chris@0 7 * For the full copyright and license information, please view the LICENSE
Chris@0 8 * file that was distributed with this source code.
Chris@0 9 */
Chris@0 10
Chris@0 11 namespace SebastianBergmann\Diff;
Chris@0 12
Chris@0 13 /**
Chris@0 14 * Unified diff parser.
Chris@0 15 */
Chris@14 16 final class Parser
Chris@0 17 {
Chris@0 18 /**
Chris@0 19 * @param string $string
Chris@0 20 *
Chris@0 21 * @return Diff[]
Chris@0 22 */
Chris@14 23 public function parse(string $string): array
Chris@0 24 {
Chris@12 25 $lines = \preg_split('(\r\n|\r|\n)', $string);
Chris@12 26
Chris@14 27 if (!empty($lines) && $lines[\count($lines) - 1] === '') {
Chris@12 28 \array_pop($lines);
Chris@12 29 }
Chris@12 30
Chris@12 31 $lineCount = \count($lines);
Chris@14 32 $diffs = [];
Chris@0 33 $diff = null;
Chris@14 34 $collected = [];
Chris@0 35
Chris@0 36 for ($i = 0; $i < $lineCount; ++$i) {
Chris@12 37 if (\preg_match('(^---\\s+(?P<file>\\S+))', $lines[$i], $fromMatch) &&
Chris@12 38 \preg_match('(^\\+\\+\\+\\s+(?P<file>\\S+))', $lines[$i + 1], $toMatch)) {
Chris@0 39 if ($diff !== null) {
Chris@0 40 $this->parseFileDiff($diff, $collected);
Chris@12 41
Chris@0 42 $diffs[] = $diff;
Chris@14 43 $collected = [];
Chris@0 44 }
Chris@0 45
Chris@0 46 $diff = new Diff($fromMatch['file'], $toMatch['file']);
Chris@12 47
Chris@0 48 ++$i;
Chris@0 49 } else {
Chris@12 50 if (\preg_match('/^(?:diff --git |index [\da-f\.]+|[+-]{3} [ab])/', $lines[$i])) {
Chris@0 51 continue;
Chris@0 52 }
Chris@12 53
Chris@0 54 $collected[] = $lines[$i];
Chris@0 55 }
Chris@0 56 }
Chris@0 57
Chris@12 58 if ($diff !== null && \count($collected)) {
Chris@0 59 $this->parseFileDiff($diff, $collected);
Chris@12 60
Chris@0 61 $diffs[] = $diff;
Chris@0 62 }
Chris@0 63
Chris@0 64 return $diffs;
Chris@0 65 }
Chris@0 66
Chris@0 67 private function parseFileDiff(Diff $diff, array $lines)
Chris@0 68 {
Chris@14 69 $chunks = [];
Chris@12 70 $chunk = null;
Chris@0 71
Chris@0 72 foreach ($lines as $line) {
Chris@12 73 if (\preg_match('/^@@\s+-(?P<start>\d+)(?:,\s*(?P<startrange>\d+))?\s+\+(?P<end>\d+)(?:,\s*(?P<endrange>\d+))?\s+@@/', $line, $match)) {
Chris@0 74 $chunk = new Chunk(
Chris@14 75 (int) $match['start'],
Chris@14 76 isset($match['startrange']) ? \max(1, (int) $match['startrange']) : 1,
Chris@14 77 (int) $match['end'],
Chris@14 78 isset($match['endrange']) ? \max(1, (int) $match['endrange']) : 1
Chris@0 79 );
Chris@0 80
Chris@0 81 $chunks[] = $chunk;
Chris@14 82 $diffLines = [];
Chris@12 83
Chris@0 84 continue;
Chris@0 85 }
Chris@0 86
Chris@12 87 if (\preg_match('/^(?P<type>[+ -])?(?P<line>.*)/', $line, $match)) {
Chris@0 88 $type = Line::UNCHANGED;
Chris@0 89
Chris@12 90 if ($match['type'] === '+') {
Chris@0 91 $type = Line::ADDED;
Chris@12 92 } elseif ($match['type'] === '-') {
Chris@0 93 $type = Line::REMOVED;
Chris@0 94 }
Chris@0 95
Chris@0 96 $diffLines[] = new Line($type, $match['line']);
Chris@0 97
Chris@12 98 if (null !== $chunk) {
Chris@0 99 $chunk->setLines($diffLines);
Chris@0 100 }
Chris@0 101 }
Chris@0 102 }
Chris@0 103
Chris@0 104 $diff->setChunks($chunks);
Chris@0 105 }
Chris@0 106 }