<?php
/**
 * SVN blame report for PHP_CodeSniffer.
 *
 * @author    Greg Sherwood <gsherwood@squiz.net>
 * @copyright 2006-2023 Squiz Pty Ltd (ABN 77 084 670 600)
 * @copyright 2023 PHPCSStandards and contributors
 * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/HEAD/licence.txt BSD Licence
 */

namespace PHP_CodeSniffer\Reports;

use PHP_CodeSniffer\Exceptions\DeepExitException;
use PHP_CodeSniffer\Util\ExitCode;

class Svnblame extends VersionControl
{

    /**
     * The name of the report we want in the output
     *
     * @var string
     */
    protected $reportName = 'SVN';


    /**
     * Extract the author from a blame line.
     *
     * @param string $line Line to parse.
     *
     * @return mixed string or false if impossible to recover.
     */
    protected function getAuthor(string $line)
    {
        $blameParts = [];
        preg_match('|\s*([^\s]+)\s+([^\s]+)|', $line, $blameParts);

        if (isset($blameParts[2]) === false) {
            return false;
        }

        return $blameParts[2];
    }


    /**
     * Gets the blame output.
     *
     * @param string $filename File to blame.
     *
     * @return array
     * @throws \PHP_CodeSniffer\Exceptions\DeepExitException
     */
    protected function getBlameContent(string $filename)
    {
        $command = 'svn blame ' . escapeshellarg($filename) . ' 2>&1';
        $handle  = popen($command, 'r');
        if ($handle === false) {
            $error = 'ERROR: Could not execute "' . $command . '"' . PHP_EOL . PHP_EOL;
            throw new DeepExitException($error, ExitCode::PROCESS_ERROR);
        }

        $rawContent = stream_get_contents($handle);
        pclose($handle);

        $blames = explode("\n", $rawContent);

        return $blames;
    }
}
