40 lines
1.2 KiB
Swift
40 lines
1.2 KiB
Swift
//
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// AppleEventUtils.swift
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// EvergreenTests
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//
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// Created by Olof Hellman on 1/7/18.
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// Copyright © 2018 Olof Hellman. All rights reserved.
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//
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import Foundation
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/*
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@function FourCharCode()
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@brief FourCharCode values like OSType, DescType or AEKeyword are really just
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4 byte values commonly represented as values like 'odoc' where each byte is
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represented as its ASCII character. This function turns a swift string into
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its FourCharCode equivalent, as swift doesn't recognize FourCharCode types
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natively just yet. With this extension, one can use
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"odoc".FourCharCode()
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where one would really want to use 'odoc'
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*/
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extension String {
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func FourCharCode() -> FourCharCode {
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var sum: UInt32 = 0
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guard ( self.count == 4) else {
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print ("error: FourCharCode() expected a 4 character string")
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return 0
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}
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for scalar in self.unicodeScalars {
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sum = (sum * 256) + scalar.value
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}
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return (sum)
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}
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}
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extension Int {
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func FourCharCode() -> FourCharCode {
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return (UInt32(self))
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}
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}
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