import Foundation
let pattern = #"""
"(?'group'[\w]+)": {\s*
((\s*"(?'value'[^"]+)": "(?'key'[^"]+)"(?:, *
)?)+)
},?
"""#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
"g1": {
"k1": "v1",
"k2": "v2",
"k3": "v3"
},
"g2": {
"k4": "v4",
"k5": "v5",
"k6": "v6"
},
"g3": {
"k7": "v7",
"k8": "v8",
"k9": "v9"
}
"""#
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