From 68fc7984097c4373d7b73538260b13dd5b4a8340 Mon Sep 17 00:00:00 2001
From: Sam Light <sam@lightscale.co.uk>
Date: Mon, 31 Mar 2025 22:07:52 +0100
Subject: Create FileString class

---
 src/FileString.php            | 42 ++++++++++++++++++++++++++++++++++++++++++
 tests/Unit/FileStringTest.php | 21 +++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 src/FileString.php
 create mode 100644 tests/Unit/FileStringTest.php

diff --git a/src/FileString.php b/src/FileString.php
new file mode 100644
index 0000000..0bdca09
--- /dev/null
+++ b/src/FileString.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Lightscale\LaralightAssets;
+
+use Illuminate\Support\Str;
+use Illuminate\Support\Collection;
+
+class FileString
+{
+    public ?string $manifestName = null;
+    public string $fileUri;
+
+
+    public function __construct(string $file)
+    {
+        $escape = '\\';
+        $seperator = '::';
+        $seperatorLen = strlen($seperator);
+
+        $pos = 0;
+        while(
+            $pos !== false
+        ) {
+            $pos = strpos($file, $seperator, $pos);
+            if ($pos > 0 && $file[$pos - 1] === $escape) {
+                $pos += $seperatorLen;
+            }
+            else break;
+        }
+
+
+        $unescape = fn($v) => str_replace($escape . $seperator, $seperator, $v);
+
+        if ($pos === false) {
+            $this->fileUri = $unescape($file);
+        }
+        else {
+            $this->manifestName = $unescape(substr($file, 0, $pos));
+            $this->fileUri = $unescape(substr($file, $pos + $seperatorLen));
+        }
+    }
+}
diff --git a/tests/Unit/FileStringTest.php b/tests/Unit/FileStringTest.php
new file mode 100644
index 0000000..2d8bc26
--- /dev/null
+++ b/tests/Unit/FileStringTest.php
@@ -0,0 +1,21 @@
+<?php
+
+use Lightscale\LaralightAssets\FileString;
+
+test(':dataset', function(string $input, ?string $manifest, string $file) {
+    $f = new FileString($input);
+    expect($f->manifestName)->toBe($manifest);
+    expect($f->fileUri)->toBe($file);
+})->with([
+    'manifest string 1' => ['main::fake.css', 'main', 'fake.css'],
+    'manifest string 2' => ['main::test::fake.css', 'main', 'test::fake.css'],
+    'manifest string 3' => ['main::test\::fake.css', 'main', 'test::fake.css'],
+    'manifest escaped 1' => ['main\::test::fake.css', 'main::test', 'fake.css'],
+    'manifest escaped 2' => ['main\::test::fake::fake.css', 'main::test', 'fake::fake.css'],
+    'manifest escaped 3' => ['main\::test::fake\::fake.css', 'main::test', 'fake::fake.css'],
+    'manifest escaped 4' => ['main\::test\::fake::fake.css', 'main::test::fake', 'fake.css'],
+    'no manifest 1' => ['fake.css', null, 'fake.css'],
+    'no manifest 2' => ['http://lightscale.co.uk/fake.css', null, 'http://lightscale.co.uk/fake.css'],
+    'no manifest 3' => ['test\::fake.css', null, 'test::fake.css'],
+    'no manifest 4' => ['test\::test2\::fake.css', null, 'test::test2::fake.css'],
+]);
-- 
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