import Foundation
let pattern = ##"\b(https?://\S+/)[^\s?#/]+(?![^\s?#])"##
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = ##"""
For any of the following URLs, I'm looking for a match for segment as follows:
https://example.com/what-not/segment matches segment
https://example.com/what-not/segment?a=b matches segment
https://example.com/what-not/segment#a matches segment
In case there is a match for segment, I'm going to replace it with segment/.
For any of the following URLs, there should be no match:
https://example.com/what-not/segment/ no match
https://example.com/what-not/segment/?a=b no match
https://example.com/what-not/segment/#a no match
"""##
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let substitutionString = #"$1segment/"#
let result = regex.stringByReplacingMatches(in: testString, range: stringRange, withTemplate: substitutionString)
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