import Foundation
let pattern = #"(Source_addresses:(?:.|\n)*?Applications:.*\n)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
Policy name: example-3 (lf-csd) (LINE 29907)
Description: CHANGE00001
Destination_addresses (8):
10.0.0.1/32 ( 10.0.0.1-lk-3r53) ( 3125)
10.0.0.8/32 ( 10.0.0.8-test13) ( 3157)
10.0.0.3/32 ( 10.0.0.3-gdgsd-cd) ( 2806)
10.0.0.9/32 ( 10.0.0.9-fd-fdsb) ( 3123)
Destination_address_sets (0):
Source_addresses:
10.0.0.7/32 ( 10.0.0.7-IR) ( 5989)
Applications: tcp3389
Then: permit
Policy name: example-4 (lfs-csd) (LINE 29907)
Description: CHANGE00002
Destination_addresses (3):
10.0.0.6/32 ( 10.0.0.1-lk-3r53) ( 3125)
10.0.0.2/32 ( 10.0.0.8-test13) ( 3157)
10.0.0.53/32 ( 10.0.0.3-gdgsd-cd) ( 2806)
10.0.0.94/32 ( 10.0.0.9-fd-fdsb) ( 3123)
Destination_address_sets (0):
Source_addresses:
10.0.0.53/32 ( 10.0.0.52-IR) ( 5989)
Applications: tcp53
Then: permit
"""#
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