ISO8601DateFormatter.swift

// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//

import CoreFoundation

extensionISO8601DateFormatter{

publicstructOptions:OptionSet{

publicprivate(set)varrawValue:UInt

publicinit(rawValue:UInt){self.rawValue = rawValue }

publicstaticvarwithYear=ISO8601DateFormatter.Options(rawValue:1 << 0)

publicstaticvarwithMonth=ISO8601DateFormatter.Options(rawValue:1 << 1)

publicstaticvarwithWeekOfYear=ISO8601DateFormatter.Options(rawValue:1 << 2)

publicstaticvarwithDay=ISO8601DateFormatter.Options(rawValue:1 << 4)

publicstaticvarwithTime=ISO8601DateFormatter.Options(rawValue:1 << 5)

publicstaticvarwithTimeZone=ISO8601DateFormatter.Options(rawValue:1 << 6)

publicstaticvarwithSpaceBetweenDateAndTime=ISO8601DateFormatter.Options(rawValue:1 << 7)

publicstaticvarwithDashSeparatorInDate=ISO8601DateFormatter.Options(rawValue:1 << 8)

publicstaticvarwithColonSeparatorInTime=ISO8601DateFormatter.Options(rawValue:1 << 9)

publicstaticvarwithColonSeparatorInTimeZone=ISO8601DateFormatter.Options(rawValue:1 << 10)

publicstaticvarwithFullDate=ISO8601DateFormatter.Options(rawValue: withYear.rawValue + withMonth.rawValue + withDay.rawValue + withDashSeparatorInDate.rawValue)

publicstaticvarwithFullTime=ISO8601DateFormatter.Options(rawValue: withTime.rawValue + withTimeZone.rawValue + withColonSeparatorInTime.rawValue + withColonSeparatorInTimeZone.rawValue)

publicstaticvarwithInternetDateTime=ISO8601DateFormatter.Options(rawValue: withFullDate.rawValue + withFullTime.rawValue)
}

}

openclassISO8601DateFormatter:Formatter,NSSecureCoding{

typealiasCFType=CFDateFormatter
privatevar__cfObject:CFType?
privatevar_cfObject:CFType{
guardlet obj = __cfObject else{
#if os(macOS) || os(iOS)
letformat=CFISO8601DateFormatOptions(rawValue: formatOptions.rawValue)
#else
letformat=CFISO8601DateFormatOptions(self.formatOptions.rawValue)
#endif
letobj=CFDateFormatterCreateISO8601Formatter(kCFAllocatorSystemDefault, format)!
CFDateFormatterSetProperty(obj, kCFDateFormatterTimeZone, timeZone._cfObject)
 __cfObject = obj
return obj
}
return obj
}

 /* Please note that there can be a significant performance cost when resetting these properties. Resetting each property can result in regenerating the entire CFDateFormatterRef, which can be very expensive. */

openvartimeZone:TimeZone!{ willSet {_reset()}}

openvarformatOptions:ISO8601DateFormatter.Options{ willSet {_reset()}}

publicoverrideinit(){
 timeZone =TimeZone(identifier:"GMT")
 formatOptions =[.withInternetDateTime,.withDashSeparatorInDate,.withColonSeparatorInTime,.withColonSeparatorInTimeZone]
 super.init()
}

publicrequiredinit?(coder aDecoder:NSCoder){NSUnimplemented()}
openoverridefunc encode(with aCoder:NSCoder){NSUnimplemented()}
publicstaticvarsupportsSecureCoding:Bool{returntrue}

openfunc string(from date:Date)->String{
returnCFDateFormatterCreateStringWithDate(kCFAllocatorSystemDefault, _cfObject, date._cfObject)._swiftObject
}

openfunc date(from string:String)->Date?{

varrange=CFRange(location:0, length: string.length)
letdate=withUnsafeMutablePointer(to:&range){(rangep:UnsafeMutablePointer<CFRange>)->Date?in
guardlet res =CFDateFormatterCreateDateFromString(kCFAllocatorSystemDefault, _cfObject, string._cfObject, rangep)else{
returnnil
}
return res._swiftObject
}
return date

}

openclassfunc string(from date:Date, timeZone:TimeZone, formatOptions:ISO8601DateFormatter.Options=[])->String{

#if os(macOS) || os(iOS)
letformat=CFISO8601DateFormatOptions(rawValue: formatOptions.rawValue)
#else
letformat=CFISO8601DateFormatOptions(formatOptions.rawValue)
#endif

letobj=CFDateFormatterCreateISO8601Formatter(kCFAllocatorSystemDefault, format)
CFDateFormatterSetProperty(obj, kCFDateFormatterTimeZone, timeZone._cfObject)
returnCFDateFormatterCreateStringWithDate(kCFAllocatorSystemDefault, obj, date._cfObject)._swiftObject

}

privatefunc _reset(){
 __cfObject =nil
}

}