如何从Swift中的String中删除变音符号？

Question

如何从StringSwift中删除变音符(或重音符号)(比如说改变"één"到"een")？我是否必须回到NSString或者可以在Swift中完成？

Answer 1

您可以直接在Swift上操作String(如果导入了"Foundation"):

let foo = "één"
let bar = foo.stringByFoldingWithOptions(.DiacriticInsensitiveSearch, locale: NSLocale.currentLocale())
print(bar) // een

斯威夫特3:

let foo = "één"
let bar = foo.folding(options: .diacriticInsensitive, locale: .current)
print(bar) // een

Answer 2

更新到@ MartinR的答案......一个Swift 3扩展,提供用于排序/搜索的字符串,这可能对某些人有用...

extension String {
    var forSorting: String {
        let simple = folding(options: [.diacriticInsensitive, .widthInsensitive, .caseInsensitive], locale: nil)
        let nonAlphaNumeric = CharacterSet.alphanumerics.inverted
        return simple.components(separatedBy: nonAlphaNumeric).joined(separator: "")
    }
}

例如

print("Mÿ nâMe ís jÄço´B".forSorting) // "mynameisjacob"

Answer 3

这是我的解决方案\xc3\xb3n

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雨燕5

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    extension String {\n\n        func unaccent() -> String {\n\n            return self.folding(options: .diacriticInsensitive, locale: .current)\n\n        }\n\n    }\n

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Answer 4

这也可以通过应用StringTransform：

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let foo = "\xc3\xa9\xc3\xa9n"\nlet bar = foo.applyingTransform(.stripDiacritics, reverse: false)!\nprint(bar) // een\n

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或者实现自定义属性StringProtocol

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extension StringProtocol {\n    var strippingDiacritics: String {\n        applyingTransform(.stripDiacritics, reverse: false)!\n    }\n}\n

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let bar = foo.strippingDiacritics\nprint(bar) // een\n

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