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Swift Wrapper for Property List Converting: Binary Plist (bplist 1.0) <==> XML Plist (xml 1.0)
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| // | |
| // PlistConverter.swift | |
| // | |
| // Copyright (C) 2019 Bá-Anh Nguyễn <baanh.nguyen@outlook.com> | |
| // This software is provided 'as-is', without any express or implied warranty. | |
| // | |
| // In no event will the authors be held liable for any damages arising from the use of this software. | |
| // | |
| // Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: | |
| // | |
| // - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required. | |
| // - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. | |
| // - This notice may not be removed or altered from any source or binary distribution. | |
| // | |
| // Tested OK on Swift 4+ | |
| open class PlistConverter { | |
| public struct PlistMimeType { | |
| static let xmlPlist = "text/x-apple-plist+xml" | |
| static let binaryPlist = "application/x-apple-binary-plist" | |
| } | |
| //// Visible Stuffs //////////////////////////////////////////////////////// | |
| convenience init?(binaryData: Data) { | |
| self.init(binaryData, format: .binaryFormat_v1_0) | |
| } | |
| convenience init?(xml: String) { | |
| guard let xmlData = xml.data(using: .utf8) else { return nil } | |
| self.init(xmlData, format: .xmlFormat_v1_0) | |
| } | |
| open func convertToXML() -> String? { | |
| guard let xmlData = convert(to: .xmlFormat_v1_0) else { return nil } | |
| return String.init(data: xmlData, encoding: .utf8) | |
| } | |
| open func convertToBinary() -> Data? { | |
| return convert(to: .binaryFormat_v1_0) | |
| } | |
| //////////////////////////////////////////////////////////////////////////// | |
| //// Private /////////////////////////////////////////////////////////////// | |
| private var plist: CFPropertyList? // | |
| // | |
| private init?(_ data: Data, format: CFPropertyListFormat) { // | |
| var dataBytes = Array(data) // | |
| let plistCoreData = CFDataCreate(kCFAllocatorDefault, // | |
| &dataBytes, dataBytes.count) // | |
| // | |
| var error: Unmanaged<CFError>? // | |
| var inputFormat = format // | |
| let options = CFPropertyListMutabilityOptions // | |
| .mutableContainersAndLeaves.rawValue // | |
| plist = CFPropertyListCreateWithData(kCFAllocatorDefault, // | |
| plistCoreData, // | |
| options, // | |
| &inputFormat, // | |
| &error)?.takeUnretainedValue() // | |
| guard plist != nil, nil == error else { // | |
| print("Error on CFPropertyListCreateWithData : ", // | |
| error!.takeUnretainedValue(), "Return nil") // | |
| error?.release() // | |
| return nil // | |
| } // | |
| error?.release() // | |
| } // | |
| // | |
| private func convert(to format: CFPropertyListFormat) -> Data? { // | |
| var error: Unmanaged<CFError>? // | |
| let binary = CFPropertyListCreateData(kCFAllocatorDefault, // | |
| plist, format, // | |
| 0, // unused, set 0 // | |
| &error)?.takeUnretainedValue() // | |
| let data = Data.init(bytes: CFDataGetBytePtr(binary), // | |
| count: CFDataGetLength(binary)) // | |
| error?.release() // | |
| return data // | |
| } // | |
| // | |
| //////////////////////////////////////////////////////////////////////////// | |
| } |
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