diff --git a/app/Parser.php b/app/Parser.php
index b74cf7b9f7..3e317120e8 100644
--- a/app/Parser.php
+++ b/app/Parser.php
@@ -2,12 +2,26 @@
 
 namespace App;
 
-use Exception;
-
 final class Parser
 {
     public function parse(string $inputPath, string $outputPath): void
     {
-        throw new Exception('TODO');
+        $results = [];
+        $resource = \fopen($inputPath, 'r');
+
+        while (($line = \fgets($resource)) !== false) {
+            $path = \substr($line, 19, -27);
+            $date = \substr($line, -26, 10);
+            $results[$path][$date] = ($results[$path][$date] ?? 0) + 1;
+        }
+        \fclose($resource);
+
+        foreach ($results as $path => &$path_arr) {
+            \ksort($path_arr);
+        }
+
+        $out = \fopen($outputPath, 'w');
+        \fwrite($out, \json_encode($results, \JSON_PRETTY_PRINT));
+        \fclose($out);
     }
-}
\ No newline at end of file
+}