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28 lines
1.0 KiB
Swift
28 lines
1.0 KiB
Swift
10 months ago
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// Copyright © 2024 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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/// **Note:** The below code **MUST** match the equivalent in `SessionUtilitiesKit.Data+Utilities`
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internal extension Data {
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var suiKitGuessedImageFormat: SUIKImageFormat {
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let twoBytesLength: Int = 2
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guard count > twoBytesLength else { return .unknown }
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var bytes: [UInt8] = [UInt8](repeating: 0, count: twoBytesLength)
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self.copyBytes(to: &bytes, from: (self.startIndex..<self.startIndex.advanced(by: twoBytesLength)))
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switch (bytes[0], bytes[1]) {
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case (0x47, 0x49): return .gif
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case (0x89, 0x50): return .png
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case (0xff, 0xd8): return .jpeg
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case (0x42, 0x4d): return .bmp
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case (0x4D, 0x4D): return .tiff // Motorola byte order TIFF
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case (0x49, 0x49): return .tiff // Intel byte order TIFF
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case (0x52, 0x49): return .webp // First two letters of WebP
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default: return .unknown
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}
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}
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}
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