Split off line formatter in normalizer + line formatters

src/Monolog/Formatter/NormalizerFormatter.php

@@ -0,0 +1,87 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Formatter;
+
+use Monolog\Logger;
+
+/**
+ * Normalizes incoming records to remove objects/resources so it's easier to dump to various targets
+ *
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+class NormalizerFormatter implements FormatterInterface
+{
+    const SIMPLE_DATE = "Y-m-d H:i:s";
+
+    protected $dateFormat;
+
+    /**
+     * @param string $dateFormat The format of the timestamp: one supported by DateTime::format
+     */
+    public function __construct($dateFormat = null)
+    {
+        $this->dateFormat = $dateFormat ?: static::SIMPLE_DATE;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function format(array $record)
+    {
+        return $this->normalize($record);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function formatBatch(array $records)
+    {
+        foreach ($records as $key => $record) {
+            $records[$key] = $this->format($record);
+        }
+
+        return $records;
+    }
+
+    protected function normalize($data)
+    {
+        if (null === $data || is_scalar($data)) {
+            return $data;
+        }
+
+        if (is_array($data) || $data instanceof \Traversable) {
+            $normalized = array();
+
+            foreach ($data as $key => $value) {
+                $normalized[$key] = $this->normalize($value);
+            }
+
+            return $normalized;
+        }
+
+        if ($data instanceof \DateTime) {
+            return $data->format($this->dateFormat);
+        }
+
+        if (is_resource($data)) {
+            return '[resource]';
+        }
+
+        if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
+            $encoded = json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+        } else {
+            $encoded = json_encode($data);
+        }
+
+        return sprintf("[object] (%s: %s)", get_class($data), $encoded);
+    }
+}