Swift正则

最新推荐文章于 2024-09-08 08:56:19 发布

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最新推荐文章于 2024-09-08 08:56:19 发布

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分类专栏： Swift

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这篇博客展示了如何在Swift中使用正则表达式进行字符串验证，包括检测用户名、非法字符、密码、手机号、身份证号码和数字。通过定义一个`RegexHelper`结构体和扩展`String`类型，提供了便捷的正则匹配方法。

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import Foundation

//正则表达式

struct RegexHelper {

let regex: NSRegularExpression

init(pattern:String) throws {

try regex = NSRegularExpression(pattern: pattern, options: NSRegularExpression.Options.caseInsensitive)

}

func match(_ input:String) ->Bool {

let matches = regex.matches(in: input, options: [], range: NSMakeRange(0, input.count))

return matches.count > 0

}

//正则检测字符串

extension String {

//MARK:检测用户名

func CheckUserName() -> Bool {

let patten = "(^[\u{4e00}-\u{9fa5}]{2,12}$)|(^[A-Za-z0-9_-]{4,12}$)"

let regex = try! NSRegularExpression(pattern: patten, options: NSRegularExpression.Options.dotMatchesLineSeparators)

if let _ = regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.count)) {

return true

}

return false

}

//MARK:检测非法字符

func CheckInvalid() -> Bool {

let pattern = "[`~!@#\\$%\\^&*\$\$\\+<>\\?:\\\"{},\\./\\;'\\[\\]]"

_ = "[`~!@#%&*()<>:,;']"

_ = "^([a-z0-9_\\.-])@([\\da-z\\.-]+)\\.([a-z\\.]{2,6})$"

let regex = try! NSRegularExpression(pattern: pattern, options: NSRegularExpression.Options.dotMatchesLineSeparators)

if let _ = regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.count)) {

return true

}

return false

}

//MARK:检测密码

func CheckPassword() -> Bool {

let pattern = "^[@A-Za-z0-9!#\\$%\\^&*\\.~_]{6,20}$"

let regex = try! NSRegularExpression(pattern: pattern, options: NSRegularExpression.Options.dotMatchesLineSeparators)

if let _ = regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.count)) {

return true

}

return false

}

//MARK:检测手机号

func CheckPhoneNo() -> Bool {

if let _ = self.range(of: "^1[3|4|5|7|8][0-9]{9}$", options: .regularExpression) {

return true

}

return false

}

//MARK:检测身份证

func CheckId() -> Bool {

let pattern = "(^[0-9]{15}$)|([0-9]{17}([0-9]|X)$)"

let regex = try! NSRegularExpression(pattern: pattern, options: NSRegularExpression.Options.dotMatchesLineSeparators)

if let _ = regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.count)) {

return true

}

return false

}

//MARK:检测是否是纯数字

func CheckNumber() -> Bool {

let pattern = "^[0-9]+$"

if NSPredicate(format: "SELF MATCHES %@", pattern).evaluate(with: self) {

return true

}

return false

}

func CheckNumberTwo() -> Bool {

let pattern = "^\\d+(\\.\\d{1,2})?$"

if NSPredicate(format: "SELF MATCHES %@", pattern).evaluate(with: self) {

return true

}

return false

}

//MARK:检测是否是银行卡号

func CheckBankCard() -> Bool {

let pattern = "^([0-9]{16}|[0-9]{19})$"

let regex = try! NSRegularExpression(pattern: pattern, options: NSRegularExpression.Options.dotMatchesLineSeparators)

if let _ = regex.firstMatch(in: self, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: NSMakeRange(0, self.count)) {

return true

}

return false

}