File: vendor/sebastian/diff/src/Parser.php

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File: vendor/sebastian/diff/src/Parser.php
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Content type: text/plain
Description: Class source
Class: PHP Pokemon Script
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Date: 2 years ago
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<?php
/*
 * 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;

/**
 * Unified diff parser.
 */
class Parser
{
   
/**
     * @param string $string
     *
     * @return Diff[]
     */
   
public function parse($string)
    {
       
$lines = \preg_split('(\r\n|\r|\n)', $string);

        if (!empty(
$lines) && $lines[\count($lines) - 1] == '') {
            \
array_pop($lines);
        }

       
$lineCount = \count($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 (
$diff !== null && \count($collected)) {
           
$this->parseFileDiff($diff, $collected);

           
$diffs[] = $diff;
        }

        return
$diffs;
    }

   
/**
     * @param Diff $diff
     * @param array $lines
     */
   
private function parseFileDiff(Diff $diff, array $lines)
    {
       
$chunks = array();
       
$chunk = null;

        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 (
null !== $chunk) {
                   
$chunk->setLines($diffLines);
                }
            }
        }

       
$diff->setChunks($chunks);
    }
}


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