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vendor/yiisoft/yii2-swiftmailer/Logger.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\swiftmailer;
+
+use Yii;
+
+/**
+ * Logger is a SwiftMailer plugin, which allows passing of the SwiftMailer internal logs to the
+ * Yii logging mechanism. Each native SwiftMailer log message will be converted into Yii 'info' log entry.
+ *
+ * In order to catch logs written by this class, you need to setup a log route for 'yii\swiftmailer\Logger::add' category.
+ * For example:
+ *
+ * ~~~
+ * 'log' => [
+ *     'targets' => [
+ *         [
+ *             'class' => 'yii\log\FileTarget',
+ *             'categories' => ['yii\swiftmailer\Logger::add'],
+ *         ],
+ *     ],
+ * ],
+ * ~~~
+ *
+ * @author Paul Klimov <klimov.paul@gmail.com>
+ * @since 2.0
+ */
+class Logger implements \Swift_Plugins_Logger
+{
+    /**
+     * @inheritdoc
+     */
+    public function add($entry)
+    {
+        $categoryPrefix = substr($entry, 0, 2);
+        switch ($categoryPrefix) {
+            case '++':
+                $level = \yii\log\Logger::LEVEL_TRACE;
+                break;
+            case '>>':
+            case '<<':
+                $level = \yii\log\Logger::LEVEL_INFO;
+                break;
+            case '!!':
+                $level = \yii\log\Logger::LEVEL_WARNING;
+                break;
+        }
+
+        if (!isset($level)) {
+            $level = \yii\log\Logger::LEVEL_INFO;
+        }
+
+        Yii::getLogger()->log($entry, $level, __METHOD__);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function clear()
+    {
+        // do nothing
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function dump()
+    {
+        return '';
+    }
+}