Question

我试图在以下结构中设置var VendorIDDeviceID的rawValue。

struct vendor: Codable {
    var VendorIDDeviceID: String

    enum CodingKeys: String, CodingKey {
        case VendorIDDeviceID = "Vendor\(vendorID)Device\(deviceID)"
    }
}

但是我需要能够在编码过程中填写vendorID和deviceID的变量。我看了一下互联网的深度，找不到任何与执行此操作相关的事情。我找到的最接近的是：

    let vendorID = "1002"
    let deviceID = "67df"
    let enumCase = vendor.VendorIDDeviceID(rawValue: "Vendor\(vendorID)Device\(deviceID)")

但是没有看到我如何在编码过程中实现这一点。任何帮助将不胜感激。

Answer 1

这是我尝试从https://pastebin.com/raw/LALX2PvV解析JSON的方式由于MACPro对象中的键是事先未知的，因此它使用动态键并将解析的结果存储在字典中。

struct BundleData: Codable {
    let cfBundleName, cfBundleIdentifier, 
        cfBundleInfoDictionaryVersion, osBundleRequired: String
    let cfBundleVersion, cfBundleExecutable, 
        cfBundleGetInfoString, cfBundleSignature: String
    let cfBundlePackageType: String
    let ioKitPersonalities: IOKitPersonalities
    let buildMachineOSBuild, lsMinimumSystemVersion, 
        cfBundleDevelopmentRegion, nsHumanReadableCopyright: String
    let cfBundleShortVersionString: String

    enum CodingKeys: String, CodingKey {
        case cfBundleName = "CFBundleName"
        case cfBundleIdentifier = "CFBundleIdentifier"
        case cfBundleInfoDictionaryVersion = "CFBundleInfoDictionaryVersion"
        case osBundleRequired = "OSBundleRequired"
        case cfBundleVersion = "CFBundleVersion"
        case cfBundleExecutable = "CFBundleExecutable"
        case cfBundleGetInfoString = "CFBundleGetInfoString"
        case cfBundleSignature = "CFBundleSignature"
        case cfBundlePackageType = "CFBundlePackageType"
        case ioKitPersonalities = "IOKitPersonalities"
        case buildMachineOSBuild = "BuildMachineOSBuild"
        case lsMinimumSystemVersion = "LSMinimumSystemVersion"
        case cfBundleDevelopmentRegion = "CFBundleDevelopmentRegion"
        case nsHumanReadableCopyright = "NSHumanReadableCopyright"
        case cfBundleShortVersionString = "CFBundleShortVersionString"
    }
}

struct IOKitPersonalities: Codable {
    let agpm: Agpm

    enum CodingKeys: String, CodingKey {
        case agpm = "AGPM"
    }
}

struct Agpm: Codable {
    let cfBundleIdentifier, ioProviderClass, ioClass: String
    let machines: Machines
    let ioNameMatch: String

    enum CodingKeys: String, CodingKey {
        case cfBundleIdentifier = "CFBundleIdentifier"
        case ioProviderClass = "IOProviderClass"
        case ioClass = "IOClass"
        case machines = "Machines"
        case ioNameMatch = "IONameMatch"
    }
}

struct Machines: Codable {
    let macPro41, macPro51: MACPro

    enum CodingKeys: String, CodingKey {
        case macPro41 = "MacPro4,1"
        case macPro51 = "MacPro5,1"
    }
}

struct MACPro: Codable {
    var defaultControlID: Int
    let devices: [String: DeviceInfo]

    enum CodingKeys: String, CodingKey {
        case defaultControlID = "default-control-id"
    }

    struct DeviceKey: CodingKey {
        var stringValue: String
        var intValue: Int?
        init?(stringValue: String) {
            self.stringValue = stringValue
        }
        init?(intValue: Int) {
            self.stringValue = "\(intValue)";
            self.intValue = intValue
        }
    }

    init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: DeviceKey.self)

        self.defaultControlID = 0
        var devices = [String: DeviceInfo]()
        for key in container.allKeys {
            if let device = try? container.decode(DeviceInfo.self, forKey: key) {
                devices[key.stringValue] = device
            } else if let controlId = try? container.decode(Int.self, forKey: key) {
                self.defaultControlID = controlId
            }
        }

        self.devices = devices
    }
}

struct DeviceInfo: Codable {
    let heuristic: Heuristic
    let logControl, controlID: Int

    enum CodingKeys: String, CodingKey {
        case heuristic = "Heuristic"
        case logControl = "LogControl"
        case controlID = "control-id"
    }
}

struct Heuristic: Codable {
    let thresholdLow: [Int]
    let idleInterval, sensorSampleRate, targetCount, sensorOption: Int
    let thresholdHigh: [Int]
    let id: Int

    enum CodingKeys: String, CodingKey {
        case thresholdLow = "Threshold_Low"
        case idleInterval = "IdleInterval"
        case sensorSampleRate = "SensorSampleRate"
        case targetCount = "TargetCount"
        case sensorOption = "SensorOption"
        case thresholdHigh = "Threshold_High"
        case id = "ID"
    }
}

let data = json.data(using: .utf8)!
do {
    let bundleData = try JSONDecoder().decode(BundleData.self, from: data)
    print(bundleData)
}
catch {
    print(error)
}

Answer 2

此处说明的CustomCodingKeys也可用于编码：https://stackoverflow.com/a/50715560/6324550

redirect_to_url

在Swift中设置枚举大小写的rawValue吗？

2 个答案: