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phausler/BetterStringToData.swift

Created November 25, 2017 19:34
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BetterStringToData.swift
extension StringProtocol {
public func data2(using encoding: String.Encoding, allowLossyConversion: Bool = true) -> Data? {
if let d = withBackingBuffer(ascii: { (asciiBuffer) -> Data? in
let byteCount = asciiBuffer.count
guard byteCount > 0 else { return Data() }
switch encoding {
case .ascii: fallthrough
case .utf8: fallthrough
case .nonLossyASCII: return Data(bytes: asciiBuffer.baseAddress!, count: byteCount)
default: return nil
}
}, unicode: { (unicodeBuffer) -> Data? in
let byteCount = unicodeBuffer.count * MemoryLayout<UInt16>.size * 2
guard byteCount > 0 else { return Data() }
switch encoding {
case .unicode: return Data(bytes: unicodeBuffer.baseAddress!, count: byteCount)
default: return nil
}
}) {
return d
}
return (self as! NSString).data(using: encoding.rawValue, allowLossyConversion: allowLossyConversion)
}
public func withBackingBuffer<T>(ascii: (UnsafeBufferPointer<Unicode.UTF8.CodeUnit>) throws -> T, unicode: (UnsafeBufferPointer<Unicode.UTF16.CodeUnit>) throws -> T) rethrows -> T {
func withStackOrHeapBufferOfCharacters<Result>(_ amount: Int, apply: (UnsafeMutablePointer<UniChar>) throws -> Result) rethrows -> Result {
typealias MainThreadBuffer = (UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, 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UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar)
typealias NonMainThreadBuffer = (UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar, UniChar)
if pthread_main_np() == 1 && amount < /* MemoryLayout<MainThreadBuffer>.size / MemoryLayout<UniChar>.size */ 2048 {
var buffer: MainThreadBuffer = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
return try withUnsafeMutableBytes(of: &buffer) { (ptr) throws -> Result in
return try apply(ptr.baseAddress!.assumingMemoryBound(to: UniChar.self))
}
} else if amount < /* MemoryLayout<NonMainThreadBuffer>.size / MemoryLayout<UniChar>.size */ 512 {
var buffer: NonMainThreadBuffer = (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
return try withUnsafeMutableBytes(of: &buffer) { (ptr) throws -> Result in
return try apply(ptr.baseAddress!.assumingMemoryBound(to: UniChar.self))
}
} else {
let buffer = malloc(amount * MemoryLayout<UniChar>.size)
defer { free(buffer) }
return try apply(buffer!.assumingMemoryBound(to: UniChar.self))
}
}
let ephem = self._ephemeralString
let core = ephem._core
if core.hasCocoaBuffer {
let ns = core.cocoaBuffer! as! CFString
let len = CFStringGetLength(ns)
if let asciiStart = CFStringGetCStringPtr(ns, kCFStringEncodingASCII) {
return try ascii(UnsafeBufferPointer(start: UnsafeRawPointer(asciiStart).assumingMemoryBound(to: Unicode.UTF8.CodeUnit.self), count: len))
} else if let utf16Start = CFStringGetCharactersPtr(ns) {
return try unicode(UnsafeBufferPointer(start: UnsafeRawPointer(utf16Start).assumingMemoryBound(to: Unicode.UTF16.CodeUnit.self), count: len))
} else {
return try withStackOrHeapBufferOfCharacters(len) { (buffer) throws -> T in
CFStringGetCharacters(ns, CFRange(location: 0, length: len), buffer)
return try unicode(UnsafeBufferPointer(start: UnsafeRawPointer(buffer).assumingMemoryBound(to: Unicode.UTF16.CodeUnit.self), count: len))
}
}
} else {
if core.isASCII {
return try ascii(UnsafeBufferPointer(start: core.startASCII, count: core.count))
} else {
return try unicode(UnsafeBufferPointer(start: core.startUTF16, count: core.count))
}
}
}
}
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