From ea84c77b30fe33be69dc942be53faf33f9dddfa0 Mon Sep 17 00:00:00 2001
From: Shannon Booth <shannon@serenityos.org>
Date: Mon, 17 Mar 2025 16:25:50 +1300
Subject: [PATCH] LibURL/Pattern: Add representation of a URL Pattern 'options'
 struct

These control how a pattern string is generated, which can vary for
different components and is also impacted by the 'ignoreCase' option
that can be provided in the URLPattern constructor.
---
 Libraries/LibURL/CMakeLists.txt      |  1 +
 Libraries/LibURL/Pattern/Options.cpp | 41 ++++++++++++++++++++++++++++
 Libraries/LibURL/Pattern/Options.h   | 30 ++++++++++++++++++++
 3 files changed, 72 insertions(+)
 create mode 100644 Libraries/LibURL/Pattern/Options.cpp
 create mode 100644 Libraries/LibURL/Pattern/Options.h

diff --git a/Libraries/LibURL/CMakeLists.txt b/Libraries/LibURL/CMakeLists.txt
index 2341cf265d2..3c097378f8d 100644
--- a/Libraries/LibURL/CMakeLists.txt
+++ b/Libraries/LibURL/CMakeLists.txt
@@ -10,6 +10,7 @@ set(SOURCES
     Pattern/Canonicalization.cpp
     Pattern/ConstructorStringParser.cpp
     Pattern/Init.cpp
+    Pattern/Options.cpp
     Pattern/Part.cpp
     Pattern/Pattern.cpp
     Pattern/String.cpp
diff --git a/Libraries/LibURL/Pattern/Options.cpp b/Libraries/LibURL/Pattern/Options.cpp
new file mode 100644
index 00000000000..dbeabc756e7
--- /dev/null
+++ b/Libraries/LibURL/Pattern/Options.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2025, Shannon Booth <shannon@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibURL/Pattern/Options.h>
+
+namespace URL::Pattern {
+
+// https://urlpattern.spec.whatwg.org/#default-options
+Options Options::default_()
+{
+    // The default options is an options struct with delimiter code point set to the empty string and prefix code point set to the empty string.
+    return {
+        .delimiter_code_point = {},
+        .prefix_code_point = {},
+    };
+}
+
+// https://urlpattern.spec.whatwg.org/#hostname-options
+Options Options::hostname()
+{
+    // The hostname options is an options struct with delimiter code point set "." and prefix code point set to the empty string.
+    return {
+        .delimiter_code_point = '.',
+        .prefix_code_point = {},
+    };
+}
+
+// https://urlpattern.spec.whatwg.org/#pathname-options
+Options Options::pathname()
+{
+    // The pathname options is an options struct with delimiter code point set "/" and prefix code point set to "/".
+    return {
+        .delimiter_code_point = '/',
+        .prefix_code_point = '/',
+    };
+}
+
+}
diff --git a/Libraries/LibURL/Pattern/Options.h b/Libraries/LibURL/Pattern/Options.h
new file mode 100644
index 00000000000..47e2e4e695b
--- /dev/null
+++ b/Libraries/LibURL/Pattern/Options.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2025, Shannon Booth <shannon@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Optional.h>
+
+namespace URL::Pattern {
+
+// https://urlpattern.spec.whatwg.org/#options
+struct Options {
+    // https://urlpattern.spec.whatwg.org/#options-delimiter-code-point
+    Optional<char> delimiter_code_point;
+
+    // https://urlpattern.spec.whatwg.org/#options-prefix-code-point
+    Optional<char> prefix_code_point;
+
+    // https://urlpattern.spec.whatwg.org/#options-ignore-case
+    bool ignore_case { false };
+
+    static Options default_();
+    static Options hostname();
+    static Options pathname();
+};
+;
+
+}