Fix some notices, and move debugging output to logging.

DXFighter.php

@@ -29,6 +29,8 @@
 use DXFighter\lib\Polyline;
 use DXFighter\lib\Spline;
 use DXFighter\lib\Text;
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerAwareTrait;
 
 /**
  * Returns the class name, used for auto loading libraries
@@ -53,9 +55,11 @@ function dxf_autoloader($className) {
  * Class DXFighter
  * @package DXFighter
  */
-class DXFighter {
+class DXFighter implements LoggerAwareInterface{
   protected $sections;
 
+  use LoggerAwareTrait;
+
   /**
    * @var Section
    */
@@ -225,7 +229,7 @@ public function move($move) {
       if (method_exists($entity, 'move')) {
         $entity->move($move);
       } else {
-        echo 'The ' . get_class($entity) . ' class does not have a move function.' . PHP_EOL;
+        $this->logger?->warning('The ' . get_class($entity) . ' class does not have a move function.' . PHP_EOL);
       }
     }
   }
@@ -241,7 +245,7 @@ public function rotate($rotate, $rotationCenter = array(0, 0, 0)) {
       if (method_exists($entity, 'rotate')) {
         $entity->rotate($rotate, $rotationCenter);
       } else {
-        echo 'The ' . get_class($entity) . ' class does not have a rotate function.' . PHP_EOL;
+        $this->logger?->warning('The ' . get_class($entity) . ' class does not have a rotate function.' . PHP_EOL);
       }
     }
   }
@@ -432,7 +436,8 @@ private function readBlocksSection($values) {
             $block = [];
             break;
           case 'ENDBLK':
-            $blockEntity = new Block($block[2]);
+            $name = $block[2] ?? '';
+            $blockEntity = new Block($name);
             $entities = $this->readEntitiesSection($entitiesSection);
             foreach ($entities as $entity) {
               $blockEntity->addEntity($entity);
@@ -631,7 +636,7 @@ private function addReadEntity($type, $data, $move = [0,0,0], $rotate = 0) {
               $polyline = new Polyline(3);
               break;
             default:
-              echo 'The polyline type ' . $data[100] . ' has not been found' . PHP_EOL;
+              $this->logger?->notice( 'The polyline type ' . $data[100] . ' has not been found' . PHP_EOL );
               return false;
           }
         } else {

composer.json

@@ -8,6 +8,7 @@
         }
     ],
     "require": {
+        "psr/log": "^3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7",