<?php
namespace Illuminate\Foundation\Http\Middleware;
use Closure;
class TrimStrings extends TransformsRequest
{
/**
* All of the registered skip callbacks.
*
* @var array
*/
protected static $skipCallbacks = [];
/**
* The attributes that should not be trimmed.
*
* @var array<int, string>
*/
protected $except = [
//
];
/**
* Handle an incoming request.
*
* @param \Illuminate\Http\Request $request
* @param \Closure $next
* @return mixed
*/
public function handle($request, Closure $next)
{
foreach (static::$skipCallbacks as $callback) {
if ($callback($request)) {
return $next($request);
}
}
return parent::handle($request, $next);
}
/**
* Transform the given value.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
protected function transform($key, $value)
{
if (in_array($key, $this->except, true) || ! is_string($value)) {
return $value;
}
return preg_replace('~^[\s\x{FEFF}\x{200B}]+|[\s\x{FEFF}\x{200B}]+$~u', '', $value) ?? trim($value);
}
/**
* Register a callback that instructs the middleware to be skipped.
*
* @param \Closure $callback
* @return void
*/
public static function skipWhen(Closure $callback)
{
static::$skipCallbacks[] = $callback;
}
/**
* Flush the middleware's global state.
*
* @return void
*/
public static function flushState()
{
static::$skipCallbacks = [];
}
}