import Foundation
let pattern = #"ip dhcp excluded-address ([\d\.]*)($| ([\d\.]*)$)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
ip dhcp excluded-address 10.10.8.1 10.10.8.100
ip dhcp excluded-address 10.8.8.1 10.8.9.0
ip dhcp excluded-address 192.168.0.1 192.168.0.10
ip dhcp excluded-address 10.10.9.12
ip dhcp excluded-address 10.10.9.14
!
ip dhcp pool Pool1
network 10.10.8.0 255.255.248.0
update dns both override
dns-server 10.10.1.10 10.10.1.11
default-router 10.10.8.1
lease 8
!
ip dhcp pool Pool2
network 10.8.8.0 255.255.248.0
update dns both override
default-router 10.8.8.1
dns-server 10.10.1.10 10.10.1.11
lease 8
!
ip dhcp pool Pool3
network 192.168.0.0 255.255.255.0
update dns both override
dns-server 10.10.1.10 10.10.1.11
default-router 192.168.0.1
lease 8
!
ip dhcp pool Device1
host 10.10.10.84 255.255.248.0
client-identifier 0100.24ee.065d.3e
!
ip dhcp pool Device2
host 10.10.10.115 255.255.248.0
client-identifier 0194.c691.6a43.3f
!
ip dhcp pool Device3
host 10.10.10.250 255.255.248.0
client-identifier 0194.c691.fb53.7e
!
"""#
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