regexMatch

regexMatch.swift

        /*
            @author Filip Bongcam
            ---------------------

            Compare string against custom regex
         
            @param  string to analyze
            @param  regex to compare against
            @param  if comparision should be case sensitive or not
            @return true or false
        */
        static func regexMatch(string: String, regexPattern: String, caseSensitive: Bool = false) -> Bool
        {
            let string = string as NSString
            // Regex object
            var regex = NSRegularExpression()
            if caseSensitive == true
            {
                do
                {
                    regex = try NSRegularExpression(pattern: regexPattern)
                } catch {
                    print("Invalid regex pattern.")
                    return false
                }
            }
            else
            {
                do
                {
                    regex = try NSRegularExpression(pattern: regexPattern, options: .caseInsensitive)
                } catch {
                    print("Invalid regex pattern.")
                    return false
                }
            }
            let match = regex.firstMatch(in: string as String, options: [], range: NSRange(location: 0, length: string.length)).map { string.substring(with: $0.range)
            }
            if match != ""
            {
                return true
            }
            return false
        }