import Foundation
let pattern = #"^(?>(?:""[^""\n]*""|[^;""\n]+)*)""?[^"";\n]*(;.*)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
Peekaboo ; A comment starts with a semicolon and continues until the EOL
...unless the semicolon is surrounded by unescaped dquotes "Don’t do it ; here" ;but match me; once
Im not surrounded "so pay attention to me" ; "peekaboo"
Im not surrounded "so pay attention" to;me" ; "peekaboo"
Im not surrounded "so pay attention to me ; peekaboo
Dquote escapes a dquote so "dont pay attention to ""me;here"" buster" do it ; here
Don’t pay attention to """me;here""" but do ""it;here""
and "dont do ""it;here""" either ;peekaboo
but "pay attention to "it;here"" ;not here though
Simon said "I like goats" then he added "and sheep;" ;a good comment is "here
Simon said "I like goats" then he added "and sheep;" dont do it here
Simon said ""I like goats;"peekaboo
Simon said "I like goats;""peekaboo
"""#
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