import Foundation
let pattern = #"(?:^crt|\G(?!\A))(?:(?!^$)\D)*\K[.:\d]+"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
crt - 00:00:00 up 200 days, 23:35, 0 users, load average: 0.04, 0.05, 0.02
Tasks: 300 total, 2 running, 298 sleeping, 0 stopped, 0 zombie
Cpu(s): 12.0%us, 2.5%sy, 0.0%ni, 89.2%id, 0.0%hi, 0.1%si, 0.0%st
Mem: 123456K total, 1234567k used, 989991k free, 11156793k buffers
Swap: 456K total, 30897564k used, 785431k free, 23445897k cached
PID User Pr NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
24 455 36 63 700 800 900 456 87 35 46
2 root 80 0 0 0 0 0 0 0 0 0 0 0 0 0 0 thread
crt - 00:00:04 up 200 days, 23:39, 0 users, load average: 0.04, 0.05, 0.02
Tasks: 300 total, 2 running, 298 sleeping, 0 stopped, 0 zombie
Cpu(s): 12.0%us, 2.5%sy, 0.0%ni, 89.2%id, 0.0%hi, 0.1%si, 0.0%st
Mem: 123456K total, 1234567k used, 989991k free, 11156793k buffers
Swap: 456K total, 30897564k used, 785431k free, 23445897k cached
"""#
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