Add importer class

Author: glensc

src/Importer.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Xhgui\Profiler;
+
+use Exception;
+use Xhgui\Profiler\Saver\SaverInterface;
+
+final class Importer
+{
+    /** @var SaverInterface */
+    private $saver;
+
+    public function __construct(SaverInterface $saver)
+    {
+        $this->saver = $saver;
+    }
+
+    public function import($stream)
+    {
+        $saver = $this->saver;
+        $lines = 0;
+        while (!feof($stream)) {
+            $line = trim(fgets($stream));
+            if (!$line) {
+                continue;
+            }
+            $data = json_decode($line, true);
+            if (!$data) {
+                error_log("Ignoring malformed JSON line: $line");
+                continue;
+            }
+
+            try {
+                $saver->save($data);
+                $lines++;
+            } catch (Exception $e) {
+                error_log($e);
+            }
+        }
+        error_log("Imported {$lines} lines");
+    }
+}