<?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;

use function array_pop;
use function count;
use function max;
use function preg_match;
use function preg_split;

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

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

        $lineCount = count($lines);
        $diffs     = [];
        $diff      = null;
        $collected = [];

        for ($i = 0; $i < $lineCount; ++$i) {
            if (preg_match('#^---\h+"?(?P<file>[^\\v\\t"]+)#', $lines[$i], $fromMatch) &&
                preg_match('#^\\+\\+\\+\\h+"?(?P<file>[^\\v\\t"]+)#', $lines[$i + 1], $toMatch)) {
                if ($diff !== null) {
                    $this->parseFileDiff($diff, $collected);

                    $diffs[]   = $diff;
                    $collected = [];
                }

                $diff = new Diff($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;
    }

    private function parseFileDiff(Diff $diff, array $lines): void
    {
        $chunks    = [];
        $chunk     = null;
        $diffLines = [];

        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(
                    (int) $match['start'],
                    isset($match['startrange']) ? max(1, (int) $match['startrange']) : 1,
                    (int) $match['end'],
                    isset($match['endrange']) ? max(1, (int) $match['endrange']) : 1
                );

                $chunks[]  = $chunk;
                $diffLines = [];

                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);
    }
}

• [D] Exception
• [D] Output
• [F] Chunk.php
  Delete
• [F] Diff.php
  Delete
• [F] Differ.php
  Delete
• [F] Line.php
  Delete
• [F] LongestCommonSubsequenceCalculator.php
  Delete
• [F] MemoryEfficientLongestCommonSubsequenceCalculator.php
  Delete
• [F] Parser.php
  Delete
• [F] TimeEfficientLongestCommonSubsequenceCalculator.php
  Delete

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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}