import Foundation
let pattern = #"(\.-?[_a-zA-Z]+[_a-zA-Z0-9-]*)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = ##"""
.myClass{color:red;}
.myClass .myOtherClass{color:green;}
#something .somethingElse{color:blue;}
.something #myIdhere{color:purple;}
#myId {color:black}
.myClass1, .myClass2{colour:green}
.menu_tab span{colour:purple}
.myPseudo:after{}
.-moz-special, .-ms-special{}
.4not2work{}
"""##
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
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