Add new ErrorHandlerTrait

Author: aleksip

src/aleksip/DataTransformPlugin/ErrorHandlerTrait.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace aleksip\DataTransformPlugin;
+
+trait ErrorHandlerTrait
+{
+    protected static $levels = [
+        E_WARNING => 'E_WARNING',
+        E_NOTICE => 'E_NOTICE',
+        E_DEPRECATED => 'E_DEPRECATED',
+        E_USER_DEPRECATED => 'E_USER_DEPRECATED',
+    ];
+
+    protected $errno;
+    protected $errstr;
+
+    protected function errorHandler($errno, $errstr)
+    {
+        $this->errno = $errno;
+        $this->errstr = $errstr;
+
+        return TRUE;
+    }
+
+    protected function setErrorHandler()
+    {
+        $this->errno = null;
+        $this->errstr = null;
+        set_error_handler([$this, 'errorHandler']);
+    }
+
+    protected function restoreErrorHandler($errorMessage = null)
+    {
+        restore_error_handler();
+        if (isset($this->errno)) {
+            $level = isset(self::$levels[$this->errno]) ? self::$levels[$this->errno] : $this->errno;
+            if (isset($errorMessage)) {
+                DataTransformPlugin::writeWarning($errorMessage);
+            }
+            DataTransformPlugin::writeWarning($this->errstr . ' (' . $level . ')', isset($errorMessage));
+        }
+    }
+}