73 lines
2.9 KiB
Swift
73 lines
2.9 KiB
Swift
// MIT License
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// Copyright (c) 2020 Haik Aslanyan
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import Foundation
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public final class RCCoderConfiguration {
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public let maxMessageCount: Int
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public let symbols: [Character]
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public let bitesPerSymbol: Int
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internal let emptySymbols: [Character]
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internal let characterSet: CharacterSet
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public init(symbols: String, shouldFillEmptySpace: Bool = true) {
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self.characterSet = CharacterSet(charactersIn: symbols.map({String($0)}).reduce("", +))
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var symbolsArray = symbols.map({$0})
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if shouldFillEmptySpace {
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self.emptySymbols = RCConstants.emptySymbols
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symbolsArray.insert(emptySymbols[0], at: symbolsArray.count / 3)
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symbolsArray.insert(emptySymbols[1], at: symbolsArray.count / 3 * 2)
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} else {
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self.emptySymbols = [RCConstants.emptySymbols[0]]
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symbolsArray.insert(emptySymbols[0], at: 0)
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}
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self.symbols = symbolsArray
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self.bitesPerSymbol = String(symbols.count, radix: 2).count
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self.maxMessageCount = RCConstants.maxBites / bitesPerSymbol
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}
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func indexOf(symbol: Character) -> Int {
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return symbols.firstIndex(of: symbol)!
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}
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func emptySymbolsIndex() -> [Int] {
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return emptySymbols.map({symbols.firstIndex(of: $0)!})
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}
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public static var uuidConfiguration: RCCoderConfiguration {
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return RCCoderConfiguration(symbols: "-ABCDEF0123456789")
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}
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public static var numericConfiguration: RCCoderConfiguration {
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return RCCoderConfiguration(symbols: ".,_0123456789")
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}
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public static var shortConfiguration: RCCoderConfiguration {
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return RCCoderConfiguration(symbols: " -abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
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}
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public static var defaultConfiguration: RCCoderConfiguration {
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return RCCoderConfiguration(symbols: ##"! "#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~"##)
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}
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}
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