import Foundation
let pattern = ##"""
#Command handler
#===============
#Start of the line
^ #Match the command name
(?<cmd>[\w\d\-\_\?]+)
#Catch as many parameters as possible
(?<params>
(
\ +
(?<pre>[^\-\\\/\w\d\s\n\r]?)
[^\"]*\k<pre>
)*
)?
#Catch as many switches as possible and save them into group
(?<switches>
(
\ +
#Switch starts with -- or - or /
(?:\-\-|\-|\/)
#Gotcha!
[\w\d\_]+
)*
)?
#At the end of the line can be some spaces
\ *$ #End of the line
"""##
let regex = try! NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines, .allowCommentsAndWhitespace])
let testString = #"""
help
echo "lol"
shutdown -s /f
"""#
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