File: SwiftDemoLogo.swift

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// Copyright (C) 2025 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
// BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.

#if ENABLE_SWIFT_DEMO_URI_SCHEME

import Foundation
internal import WebKit_Internal

extension Data {
    var bytes: [UInt8] {
        [UInt8](self)
    }
}

// This function is contrived to exercise bi-directional C++ -> Swift -> C++
// calls within the main WebKit target. It can be tested by enabling
// ENABLE_SWIFT_DEMO_DATA_URL_ENCODING, and then visiting
// x-swift-demo:// in the browser. The goal is to provide an easy
// but comprehensive test case to determine whether Swift-C++ interop
// is working in a given toolchain.
/// Return data for a PNG of a Swift logo.
@_expose(Cxx)
@_spi(Private) // FIXME: rdar://159211965
public func getSwiftLogoData() -> [UInt8] {
    guard WebKit.shouldShowSwiftDemoLogo() else {
        return []
    }
    // From "Download logo and guidelines" linked from
    // https://developer.apple.com/swift/resources/
    // Swift_logo_color.svg converted to PNG
    // The Swift logo is a trademark of Apple Inc.
    let swiftLogoBase64 = """
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        """
    guard let data = Data(base64Encoded: swiftLogoBase64) else {
        return []
    }
    return data.bytes
}

#endif