import Foundation
let pattern = ##"^(?=(?=([^{}()<>]*\[+[^{}()<>]*\]+[^{}()<>]*))\1*$|(?=([^[\]()<>]*\{+[^[\]()<>]*\}+[^[\]()<>]*))\2*$|(?=([^[\]{}<>]*\(+[^[\]{}<>]*\)+[^[\]{}<>]*))\3*$|(?=([^[\]{}()]*\<+[^[\]{}()]*\>+[^[\]{}()]*))\4*$|(?=([^[\]{}()<>]*))\5*$)(?=(?=([^\"]*\“+[^\"]*\”+[^\"]*))\6*$|(?=([^“”]*\"+[^“”]*\"+[^“”]*))\7*$|(?=([^\"“”]*))\8*$)(?=(?=([^']*‘+[^']*’+[^']*))\9*$|(?=([^‘’]*'+[^‘’]*'+[^‘’]*))\10*$|(?=([^'‘’]*))\11*$)[A-Za-z0-9 \"“”'‘’()[\]{}<>«»\\\/?!&@£$€¥.,-]{3}[A-Za-z0-9 \"“”'‘’()[\]{}<>«»\\\/?!&@£$€¥.,\-*=#%+]{0,157}$"##
let regex = try! NSRegularExpression(pattern: pattern)
let testString = ##"""
/^
(?=
(?=( [^{}()<>]* \[+ [^{}()<>]* \]+ [^{}()<>]* ))\1 *$|
(?=( [^[\]()<>]* \{+ [^[\]()<>]* \}+ [^[\]()<>]* ))\2 *$|
(?=( [^[\]{}<>]* \(+ [^[\]{}<>]* \)+ [^[\]{}<>]* ))\3 *$|
(?=( [^[\]{}()]* \<+ [^[\]{}()]* \>+ [^[\]{}()]* ))\4 *$|
(?=( [^[\]{}()<>]* ))\5 *$
)
(?=
(?=( [^\"]* \“+ [^\"]* \”+ [^\"]* ))\6 *$|
(?=( [^“”]* \"+ [^“”]* \"+ [^“”]* ))\7 *$|
(?=( [^\"“”]* ))\8 *$
)
(?=
(?=( [^']* ‘+ [^']* ’+ [^']* ))\9 *$|
(?=( [^‘’]* '+ [^‘’]* '+ [^‘’]* ))\10 *$|
(?=( [^'‘’]* ))\11 *$
)
[A-Za-z0-9 \"“”'‘’()[\]{}<>«»\\\/?!&@£$€¥.,-]{3}
[A-Za-z0-9 \"“”'‘’()[\]{}<>«»\\\/?!&@£$€¥.,\-*=#%+]{0,157}
$/
"""##
let stringRange = NSRange(location: 0, length: testString.utf16.count)
if let firstMatch = regex.firstMatch(in: testString, range: stringRange) {
let result: [String] = (1 ..< firstMatch.numberOfRanges).map { (testString as NSString).substring(with: firstMatch.range(at: $0)) }
print(result)
} else {
print("No matches were found.")
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression