Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/Fetch/Infrastructure/URL.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Array.h>
+#include <AK/ByteBuffer.h>
+#include <AK/Error.h>
+#include <AK/String.h>
+#include <AK/StringView.h>
+#include <LibURL/Forward.h>
+#include <LibWeb/MimeSniff/MimeType.h>
+
+namespace Web::Fetch::Infrastructure {
+
+// https://fetch.spec.whatwg.org/#local-scheme
+// A local scheme is "about", "blob", or "data".
+inline constexpr Array LOCAL_SCHEMES = {
+    "about"sv, "blob"sv, "data"sv
+};
+
+// https://fetch.spec.whatwg.org/#http-scheme
+// An HTTP(S) scheme is "http" or "https".
+inline constexpr Array HTTP_SCHEMES = {
+    "http"sv, "https"sv
+};
+
+// https://fetch.spec.whatwg.org/#fetch-scheme
+// A fetch scheme is "about", "blob", "data", "file", or an HTTP(S) scheme.
+inline constexpr Array FETCH_SCHEMES = {
+    "about"sv, "blob"sv, "data"sv, "file"sv, "http"sv, "https"sv,
+
+    // AD-HOC: Internal fetch schemes:
+    "resource"sv
+};
+
+// https://fetch.spec.whatwg.org/#data-url-struct
+struct DataURL {
+    MimeSniff::MimeType mime_type;
+    ByteBuffer body;
+};
+
+[[nodiscard]] bool is_local_url(URL::URL const&);
+[[nodiscard]] bool is_fetch_scheme(StringView);
+[[nodiscard]] bool is_http_or_https_scheme(StringView);
+ErrorOr<DataURL> process_data_url(URL::URL const&);
+
+}