Parser.php in Zircon Profile 8

Namespace

SebastianBergmann\Diff

File

vendor/sebastian/diff/src/Parser.php

<?php

/*
 * This file is part of the Diff package.
 *
 * (c) Sebastian Bergmann <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\Diff;


/**
 * Unified diff parser.
 *
 * @package    Diff
 * @author     Sebastian Bergmann <[e-mail]>
 * @author     Kore Nordmann <[e-mail]>
 * @copyright  Sebastian Bergmann <[e-mail]>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.github.com/sebastianbergmann/diff
 */
class Parser {

  /**
   * @param  string $string
   * @return Diff[]
   */
  public function parse($string) {
    $lines = preg_split('(\\r\\n|\\r|\\n)', $string);
    $lineCount = count($lines);
    $diffs = array();
    $diff = null;
    $collected = array();
    for ($i = 0; $i < $lineCount; ++$i) {
      if (preg_match('(^---\\s+(?P<file>\\S+))', $lines[$i], $fromMatch) && preg_match('(^\\+\\+\\+\\s+(?P<file>\\S+))', $lines[$i + 1], $toMatch)) {
        if ($diff !== null) {
          $this
            ->parseFileDiff($diff, $collected);
          $diffs[] = $diff;
          $collected = array();
        }
        $diff = new Diff($fromMatch['file'], $toMatch['file']);
        ++$i;
      }
      else {
        if (preg_match('/^(?:diff --git |index [\\da-f\\.]+|[+-]{3} [ab])/', $lines[$i])) {
          continue;
        }
        $collected[] = $lines[$i];
      }
    }
    if (count($collected) && $diff !== null) {
      $this
        ->parseFileDiff($diff, $collected);
      $diffs[] = $diff;
    }
    return $diffs;
  }

  /**
   * @param Diff  $diff
   * @param array $lines
   */
  private function parseFileDiff(Diff $diff, array $lines) {
    $chunks = array();
    foreach ($lines as $line) {
      if (preg_match('/^@@\\s+-(?P<start>\\d+)(?:,\\s*(?P<startrange>\\d+))?\\s+\\+(?P<end>\\d+)(?:,\\s*(?P<endrange>\\d+))?\\s+@@/', $line, $match)) {
        $chunk = new Chunk($match['start'], isset($match['startrange']) ? max(1, $match['startrange']) : 1, $match['end'], isset($match['endrange']) ? max(1, $match['endrange']) : 1);
        $chunks[] = $chunk;
        $diffLines = array();
        continue;
      }
      if (preg_match('/^(?P<type>[+ -])?(?P<line>.*)/', $line, $match)) {
        $type = Line::UNCHANGED;
        if ($match['type'] == '+') {
          $type = Line::ADDED;
        }
        elseif ($match['type'] == '-') {
          $type = Line::REMOVED;
        }
        $diffLines[] = new Line($type, $match['line']);
        if (isset($chunk)) {
          $chunk
            ->setLines($diffLines);
        }
      }
    }
    $diff
      ->setChunks($chunks);
  }

}

Classes

Name	Description
Parser	Unified diff parser.