Everywhere: Hoist the Libraries folder to the top-level

Libraries/LibCore/MimeData.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2022, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/ByteBuffer.h>
+#include <AK/HashMap.h>
+#include <LibCore/EventReceiver.h>
+#include <LibURL/URL.h>
+
+namespace Core {
+
+class MimeData : public EventReceiver {
+    C_OBJECT(MimeData);
+
+public:
+    virtual ~MimeData() = default;
+
+    ByteBuffer data(StringView mime_type) const { return m_data.get(mime_type).value_or({}); }
+    void set_data(String const& mime_type, ByteBuffer&& data) { m_data.set(mime_type, move(data)); }
+
+    bool has_format(StringView mime_type) const { return m_data.contains(mime_type); }
+    Vector<String> formats() const { return m_data.keys(); }
+
+    // Convenience helpers for "text/plain"
+    bool has_text() const { return has_format("text/plain"sv); }
+    ByteString text() const;
+    void set_text(ByteString const&);
+
+    // Convenience helpers for "text/uri-list"
+    bool has_urls() const { return has_format("text/uri-list"sv); }
+    Vector<URL::URL> urls() const;
+    ErrorOr<void> set_urls(Vector<URL::URL> const&);
+
+    HashMap<String, ByteBuffer> const& all_data() const { return m_data; }
+
+private:
+    MimeData() = default;
+    explicit MimeData(HashMap<String, ByteBuffer> const& data)
+        : m_data(data.clone().release_value_but_fixme_should_propagate_errors())
+    {
+    }
+
+    HashMap<String, ByteBuffer> m_data;
+};
+
+StringView guess_mime_type_based_on_filename(StringView);
+
+Optional<StringView> guess_mime_type_based_on_sniffed_bytes(ReadonlyBytes);
+Optional<StringView> guess_mime_type_based_on_sniffed_bytes(Core::File&);
+
+struct MimeType {
+    StringView name {};
+    Vector<StringView> common_extensions {};
+    StringView description {};
+    Optional<Vector<u8>> magic_bytes {};
+    u64 offset { 0 };
+};
+
+Optional<MimeType const&> get_mime_type_data(StringView);
+
+}