81 lines
3.1 KiB
Swift
81 lines
3.1 KiB
Swift
import Foundation
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extension String {
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static let multiplication = "\u{00D7}"
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static let division = "\u{00F7}"
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static let fractionSlash = "\u{2044}"
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static let whiteSquare = "\u{25A1}"
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static let blackSquare = "\u{25A0}"
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static let lessEqual = "\u{2264}"
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static let greaterEqual = "\u{2265}"
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static let notEqual = "\u{2260}"
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static let squareRoot = "\u{221A}"
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static let cubeRoot = "\u{221B}"
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static let infinity = "\u{221E}"
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static let angle = "\u{2220}"
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static let degree = "\u{00B0}"
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}
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extension UTF32Char {
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static let capitalGreekStart = UTF32Char(0x0391)
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static let capitalGreekEnd = UTF32Char(0x03A9)
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static let lowerGreekStart = UTF32Char(0x03B1)
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static let lowerGreekEnd = UTF32Char(0x03C9)
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static let planksConstant = UTF32Char(0x210e)
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static let lowerItalicStart = UTF32Char(0x1D44E)
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static let capitalItalicStart = UTF32Char(0x1D434)
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static let greekLowerItalicStart = UTF32Char(0x1D6FC)
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static let greekCapitalItalicStart = UTF32Char(0x1D6E2)
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static let greekSymbolItalicStart = UTF32Char(0x1D716)
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static let mathCapitalBoldStart = UTF32Char(0x1D400)
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static let mathLowerBoldStart = UTF32Char(0x1D41A)
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static let greekCapitalBoldStart = UTF32Char(0x1D6A8)
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static let greekLowerBoldStart = UTF32Char(0x1D6C2)
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static let greekSymbolBoldStart = UTF32Char(0x1D6DC)
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static let numberBoldStart = UTF32Char(0x1D7CE)
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static let mathCapitalBoldItalicStart = UTF32Char(0x1D468)
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static let mathLowerBoldItalicStart = UTF32Char(0x1D482)
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static let greekCapitalBoldItalicStart = UTF32Char(0x1D71C)
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static let greekLowerBoldItalicStart = UTF32Char(0x1D736)
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static let greekSymbolBoldItalicStart = UTF32Char(0x1D750)
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static let mathCapitalScriptStart = UTF32Char(0x1D49C)
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static let mathCapitalTTStart = UTF32Char(0x1D670)
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static let mathLowerTTStart = UTF32Char(0x1D68A)
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static let numberTTStart = UTF32Char(0x1D7F6)
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static let mathCapitalSansSerifStart = UTF32Char(0x1D5A0)
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static let mathLowerSansSerifStart = UTF32Char(0x1D5BA)
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static let numberSansSerifStart = UTF32Char(0x1D7E2)
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static let mathCapitalFrakturStart = UTF32Char(0x1D504)
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static let mathLowerFrakturStart = UTF32Char(0x1D51E)
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static let mathCapitalBlackboardStart = UTF32Char(0x1D538)
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static let mathLowerBlackboardStart = UTF32Char(0x1D552)
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static let numberBlackboardStart = UTF32Char(0x1D7D8)
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}
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extension Character {
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var utf32: UTF32Char { self.unicodeScalars.map { $0.value }.reduce(0, +) }
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var isLowerEnglish: Bool { self >= "a" && self <= "z" }
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var isUpperEnglish: Bool { self >= "A" && self <= "Z" }
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var isNumber: Bool { self >= "0" && self <= "9" }
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var isLowerGreek: Bool {
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(UTF32Char.lowerGreekStart...UTF32Char.lowerGreekEnd).contains(self.utf32)
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}
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var isCapitalGreek: Bool {
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(UTF32Char.capitalGreekStart...UTF32Char.capitalGreekEnd).contains(self.utf32)
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}
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var greekSymbolOrder: UInt32? {
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let greekSymbols: [UTF32Char] = [0x03F5, 0x03D1, 0x03F0, 0x03D5, 0x03F1, 0x03D6]
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let index = greekSymbols.firstIndex(of: self.utf32)
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if let pos = index { return UInt32(pos) }
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return nil
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}
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var isGreekSymbol: Bool { self.greekSymbolOrder != nil }
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}
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