InGamePacketHandler: removed obsolete workaround

src/network/mcpe/handler/InGamePacketHandler.php

@@ -112,7 +112,6 @@
 use function base64_encode;
 use function count;
 use function fmod;
-use function implode;
 use function in_array;
 use function is_bool;
 use function is_infinite;
@@ -122,12 +121,9 @@
 use function max;
 use function mb_strlen;
 use function microtime;
-use function preg_match;
 use function sprintf;
 use function strlen;
 use function strpos;
-use function substr;
-use function trim;
 use const JSON_THROW_ON_ERROR;
 
 /**
@@ -875,57 +871,14 @@ public function handleModalFormResponse(ModalFormResponsePacket $packet) : bool{
 			//TODO: make APIs for this to allow plugins to use this information
 			return $this->player->onFormSubmit($packet->formId, null);
 		}elseif($packet->formData !== null){
-			return $this->player->onFormSubmit($packet->formId, self::stupid_json_decode($packet->formData, true));
-		}else{
-			throw new PacketHandlingException("Expected either formData or cancelReason to be set in ModalFormResponsePacket");
-		}
-	}
-
-	/**
-	 * Hack to work around a stupid bug in Minecraft W10 which causes empty strings to be sent unquoted in form responses.
-	 *
-	 * @return mixed
-	 * @throws PacketHandlingException
-	 */
-	private static function stupid_json_decode(string $json, bool $assoc = false){
-		if(preg_match('/^\[(.+)\]$/s', $json, $matches) > 0){
-			$raw = $matches[1];
-			$lastComma = -1;
-			$newParts = [];
-			$inQuotes = false;
-			for($i = 0, $len = strlen($raw); $i <= $len; ++$i){
-				if($i === $len || ($raw[$i] === "," && !$inQuotes)){
-					$part = substr($raw, $lastComma + 1, $i - ($lastComma + 1));
-					if(trim($part) === ""){ //regular parts will have quotes or something else that makes them non-empty
-						$part = '""';
-					}
-					$newParts[] = $part;
-					$lastComma = $i;
-				}elseif($raw[$i] === '"'){
-					if(!$inQuotes){
-						$inQuotes = true;
-					}else{
-						$backslashes = 0;
-						for(; $backslashes < $i && $raw[$i - $backslashes - 1] === "\\"; ++$backslashes){}
-						if(($backslashes % 2) === 0){ //unescaped quote
-							$inQuotes = false;
-						}
-					}
-				}
-			}
-
-			$fixed = "[" . implode(",", $newParts) . "]";
 			try{
-				return json_decode($fixed, $assoc, self::MAX_FORM_RESPONSE_DEPTH, JSON_THROW_ON_ERROR);
+				$responseData = json_decode($packet->formData, true, self::MAX_FORM_RESPONSE_DEPTH, JSON_THROW_ON_ERROR);
 			}catch(\JsonException $e){
-				throw PacketHandlingException::wrap($e, "Failed to fix JSON (original: $json, modified: $fixed)");
+				throw PacketHandlingException::wrap($e, "Failed to decode form response data");
 			}
-		}
-
-		try{
-			return json_decode($json, $assoc, self::MAX_FORM_RESPONSE_DEPTH, JSON_THROW_ON_ERROR);
-		}catch(\JsonException $e){
-			throw PacketHandlingException::wrap($e);
+			return $this->player->onFormSubmit($packet->formId, $responseData);
+		}else{
+			throw new PacketHandlingException("Expected either formData or cancelReason to be set in ModalFormResponsePacket");
 		}
 	}