import Foundation
let pattern = #"(<(\w+)[^>]*>)((?!<\2).*)(<\/\2>)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .dotMatchesLineSeparators)
let testString = #"""
alpha
<div>
alpha<div>
beta<div>
x < y divided by 4
</div>
</div>
</div>
<div>
<span style="font-size: 8pt;" disabled title="data">
<span>infinite</span>
<?= $record->id ?>
</span>
<div> equal </div>
</div>
<div> sum </div>
When x y and y > 0
<div> Summary</div>
Equation id <?= $equation->id ?>
"""#
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