Parse phpinsights output to checkstyle xml

parse_phpinsights.php

<?php

$input = file_get_contents('php://stdin');

$headerPattern = '/• \[(.+)\] (.+): \((.+)\)/';
$linePattern = '/  (.+):(\d+): (.+)/';

$severity = 'error';
$source = '';
$message = '';

$files = [];

foreach (explode("\n", $input) as $line) {
    if (preg_match($headerPattern, $line, $matches)) {
        $severity = $matches[1] === 'Code' ? 'error' : 'warning';
        $source = $matches[3];
        //$message = $matches[2];
    }
    if (preg_match($linePattern, $line, $matches)) {
        $files[$matches[1]][] = [
            'line' => $matches[2],
            'column' => 1,
            'severity' => $severity,
            'source' => $source,
            'message' => addslashes($matches[3]),
        ];
    }
}

echo '<?xml version="1.0" encoding="UTF-8"?>'.PHP_EOL.'<checkstyle version="3.1.0">'.PHP_EOL;

foreach ($files as $fileName => $errors) {
    echo '<file name="'.$fileName.'">'.PHP_EOL;
    foreach ($errors as $error) {
        echo '<error line="'.$error['line'].'" column="'.$error['column'].'" severity="'.$error['severity'].'" message="'.$error['message'].'" source="'.$error['source'].'" />'.PHP_EOL;
    }
    echo '</file>'.PHP_EOL;
}

echo '</checkstyle>';

php artisan insights --no-interaction -v | php /path/to/parse_phpinsights.php > checkstyle-result.xml