class Hgblame

class Hgblame extends VersionControl {
    
    /**
     * The name of the report we want in the output
     *
     * @var string
     */
    protected $reportName = 'MERCURIAL';
    
    /**
     * Extract the author from a blame line.
     *
     * @param string $line Line to parse.
     *
     * @return string|false String or FALSE if impossible to recover.
     */
    protected function getAuthor($line) {
        $blameParts = [];
        $line = preg_replace('|\\s+|', ' ', $line);
        preg_match('|(.+[0-9]{2}:[0-9]{2}:[0-9]{2}\\s[0-9]{4}\\s.[0-9]{4}:)|', $line, $blameParts);
        if (isset($blameParts[0]) === false) {
            return false;
        }
        $parts = explode(' ', $blameParts[0]);
        if (count($parts) < 6) {
            return false;
        }
        $parts = array_slice($parts, 0, count($parts) - 6);
        return trim(preg_replace('|<.+>|', '', implode(' ', $parts)));
    }
    
    //end getAuthor()
    
    /**
     * Gets the blame output.
     *
     * @param string $filename File to blame.
     *
     * @return array
     * @throws \PHP_CodeSniffer\Exceptions\DeepExitException
     */
    protected function getBlameContent($filename) {
        $cwd = getcwd();
        $fileParts = explode(DIRECTORY_SEPARATOR, $filename);
        $found = false;
        $location = '';
        while (empty($fileParts) === false) {
            array_pop($fileParts);
            $location = implode(DIRECTORY_SEPARATOR, $fileParts);
            if (is_dir($location . DIRECTORY_SEPARATOR . '.hg') === true) {
                $found = true;
                break;
            }
        }
        if ($found === true) {
            chdir($location);
        }
        else {
            $error = 'ERROR: Could not locate .hg directory ' . PHP_EOL . PHP_EOL;
            throw new DeepExitException($error, 3);
        }
        $command = 'hg blame -u -d -v "' . $filename . '" 2>&1';
        $handle = popen($command, 'r');
        if ($handle === false) {
            $error = 'ERROR: Could not execute "' . $command . '"' . PHP_EOL . PHP_EOL;
            throw new DeepExitException($error, 3);
        }
        $rawContent = stream_get_contents($handle);
        pclose($handle);
        $blames = explode("\n", $rawContent);
        chdir($cwd);
        return $blames;
    }
    
    //end getBlameContent()

}