Script to add `nofilter` to html smarty blocks

gistfile1.txt

#!/usr/bin/env php
<?php

/**
 * Recursively updates *.tpl files to add 'nofilter' to any {ts} block containing markup.
 *
 * Usage:
 *   php add_nofilter.php /path/to/directory
 */

$targetDir = $argv[1] ?? '.';

if (!is_dir($targetDir)) {
    fwrite(STDERR, "Error: Directory '{$targetDir}' does not exist.\n");
    exit(1);
}

$dirIterator = new RecursiveDirectoryIterator($targetDir, RecursiveDirectoryIterator::SKIP_DOTS);
$iterator = new RecursiveIteratorIterator($dirIterator);

$scanned = 0;
$updated = 0;

// Regex matching Smarty {ts ...} ... {/ts} tags across single or multiple lines
$pattern = '/\{ts\b([^}]*)\}(.*?)\{\/ts\}/s';

foreach ($iterator as $file) {
    if ($file->isFile() && $file->getExtension() === 'tpl') {
        $scanned++;
        $filePath = $file->getPathname();
        $content = file_get_contents($filePath);

        if ($content === false) {
            continue;
        }

        $newContent = preg_replace_callback($pattern, function ($matches) {
            $attributes = $matches[1]; // Opening tag parameters (e.g., " 1=$foo")
            $body       = $matches[2]; // Content between opening and closing tags

            // 1. Check if markup (<) is present in the block body
            if (strpos($body, '<') === false) {
                return $matches[0]; // No markup, leave unchanged
            }

            // 2. Check if 'nofilter' is already present in the opening tag parameters
            if (preg_match('/\bnofilter\b/', $attributes)) {
                return $matches[0]; // Already present, leave unchanged
            }

            // 3. Prepend 'nofilter' inside the opening {ts ...} tag
            return '{ts nofilter' . $attributes . '}' . $body . '{/ts}';
        }, $content);

        // Save changes if content was modified
        if ($newContent !== null && $newContent !== $content) {
            file_put_contents($filePath, $newContent);
            echo "Updated: {$filePath}\n";
            $updated++;
        }
    }
}

echo "\nDone. Scanned {$scanned} .tpl file(s), updated {$updated} file(s).\n";