From 3d3351775a6cd1a4de8cab323ed406025216c36f Mon Sep 17 00:00:00 2001
From: Alex Tsarkov <alex.tsarkov@gmail.com>
Date: Fri, 13 Mar 2026 11:02:27 +0300
Subject: [PATCH 1/2] Add parser implementation

---
 app/Parser.php | 55 ++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 51 insertions(+), 4 deletions(-)

diff --git a/app/Parser.php b/app/Parser.php
index b74cf7b9f7..be333c27d3 100644
--- a/app/Parser.php
+++ b/app/Parser.php
@@ -2,12 +2,59 @@
 
 namespace App;
 
-use Exception;
-
 final class Parser
 {
     public function parse(string $inputPath, string $outputPath): void
     {
-        throw new Exception('TODO');
+        \gc_disable();
+
+        $data = $this->parseInput($inputPath);
+        $this->formatOutput($outputPath, $data);
+    }
+
+    private function parseInput(string $inputPath): array
+    {
+        $data = [];
+        $counters = \array_fill(0, 32 * 16 * 6, 0);
+
+        $stream = \fopen($inputPath, 'rb');
+        \stream_set_read_buffer($stream, 16 << 20);
+
+        while (4 === \fscanf($stream, 'https://stitcher.io/blog/%[^,],%d-%d-%d', $path, $y, $m, $d)) {
+            $data[$path] ??= $counters;
+            ++$data[$path][($y - 2021) << 9 | $m << 5 | $d];
+        }
+
+        \fclose($stream);
+
+        return $data;
+    }
+
+    private function formatOutput(string $outputPath, array $data): void
+    {
+        $stream = \fopen($outputPath, 'wb');
+        \stream_set_write_buffer($stream, 16 << 20);
+
+        $path_sep = "{";
+        foreach ($data as $path => $counters) {
+            \fwrite($stream, "{$path_sep}\n    \"\\/blog\\/{$path}\": {\n");
+            $date_sep = '';
+            foreach ($counters as $date => $count) {
+                if ($count !== 0) {
+                    \fprintf(
+                        $stream,
+                        "{$date_sep}        \"%d-%02d-%02d\": {$count}}",
+                        ($date >> 9) + 2021,
+                        ($date >> 5) & 0b1111,
+                        $date & 0b11111,
+                    );
+                    $date_sep = ",\n";
+                }
+            }
+            $path_sep = "\n    },";
+        }
+        \fwrite($stream, "\n    }\n}\n");
+
+        \fsync($stream) and \fclose($stream);
     }
-}
\ No newline at end of file
+}

From 40d64851e1dfc2a60d5ca811c3dc167e4c6171ae Mon Sep 17 00:00:00 2001
From: Alex Tsarkov <alex.tsarkov@gmail.com>
Date: Sat, 14 Mar 2026 15:19:39 +0300
Subject: [PATCH 2/2] Fix typos

---
 app/Parser.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/Parser.php b/app/Parser.php
index be333c27d3..6b4440bd61 100644
--- a/app/Parser.php
+++ b/app/Parser.php
@@ -43,7 +43,7 @@ private function formatOutput(string $outputPath, array $data): void
                 if ($count !== 0) {
                     \fprintf(
                         $stream,
-                        "{$date_sep}        \"%d-%02d-%02d\": {$count}}",
+                        "{$date_sep}        \"%d-%02d-%02d\": {$count}",
                         ($date >> 9) + 2021,
                         ($date >> 5) & 0b1111,
                         $date & 0b11111,
@@ -53,7 +53,7 @@ private function formatOutput(string $outputPath, array $data): void
             }
             $path_sep = "\n    },";
         }
-        \fwrite($stream, "\n    }\n}\n");
+        \fwrite($stream, "\n    }\n}");
 
         \fsync($stream) and \fclose($stream);
     }