import Foundation
let pattern = #"(?:-|(?P<real_ip>[\-\da-f.:, ]+)) - (?<remote_user>\S+) \[(?<timestamp>[^\]]+)\]\s+"(?:\-|(?<request>\w+) (?<request_uri>[^ \?]+)(?:\?(?<request_uri_query>[^ ]*))? (?<request_version>[\w\/\.]+))"\s+(?P<status>[1-9]\d{2})\s+(?P<body_bytes_sent>\d+)\s+"(?<http_referer>[^"]+)"\s+"(?<http_user_agent>[^"]+)"\s+"(?P<remote_ip>[\da-f.:]+)" (?:\-|(?P<upstream_response_time>\d+(?:.\d+)?))\s+(?P<request_time>\d+(?:.\d+)?) (?P<pipe>[\.p])"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
10.100.7.118 - - [02/Aug/2022:19:27:57 +0800] "GET /api/article/list/news HTTP/1.1" 200 103594 "https://165.npa.gov.tw/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36" "172.27.31.231" 0.062 0.062 .
49.216.25.168, 203.66.34.45 - - [02/Aug/2022:19:28:10 +0800] "GET /assets/i18n/zh-tw.json HTTP/1.1" 200 9760 "https://165.npa.gov.tw/" "Mozilla/5.0 (iPhone; CPU iPhone OS 15_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148" "172.27.31.231" 0.031 0.031 .
"""#
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