import Foundation
let pattern = #"(<p>|<div .*>)(\s*)(<a .*>)?(\s*)(<img .* \/>)(\s*)(<\/a>)?(\s*)(<p .*>.*<\/p>)?(\s*)(<\/p>|<\/div>)"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
<div id="attachment_3340" style="width: 865px" class="wp-caption alignnone">
<img class="size-full wp-image-3340" alt="Testbild" src="https://beispiel.de/images/Testbild.jpg" width="855" height="631" />
<p class="wp-caption-text">© Copyright</p>
</div>
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let substitutionString = #"$3$5$7$9"#
let lookupRange = (testString as NSString).range(of: pattern, options: .regularExpression, range: stringRange)
if lookupRange.intersection(stringRange) != nil {
let result = regex.stringByReplacingMatches(in: testString, range: lookupRange, withTemplate: substitutionString)
print(result)
} else {
print("No matches were found.")
}
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