import Foundation
let pattern = #"\W*\b(?!foobar).+?\b\W*"#
let regex = try! NSRegularExpression(pattern: pattern, options: .dotMatchesLineSeparators)
let testString = #"""
this should be highlighted, and
same with this. but any sentence
that has the word
foobar
shouldnt be, and same for any regular
sentence with foobar <-- like that
foobar beginning a sentence should invalidate
the entire sentence, same with at the end foobar
only foobar, and nothing else of the sentence
more words here more irrelevant stuff to highlight
and nothing of the key word
what about multiple foobar on the same foobar line?
"""#
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