import Foundation
let pattern = #"(?:<img|(?<!^)\G)\h*([-\w]+)="([^"]+)"(?=.*?\/>)"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
<p>List of sample images.</p>
<img src="https://placehold.it/250x100.jpg" width="250" height="100" alt="Dimensions Set" />
<img src="https://placehold.it/250x100/99cc00/000.jpg?text=JPG" alt="JPG" /><br>
<img src="https://placehold.it/250x100.gif?text=GIF" alt="GIF" /><br>
<img src="https://placehold.it/250x100/ff6600/000.png?text=PNG" alt="PNG" /><br>
<img class="no-ext" src="https://placehold.it/350x150?text=No Extension" alt="No Ext" /><br>
<img src="https://placehold.it/250x100.png" custom-attr="custom1" another-attr="custom2" /><br>
<img class="svg" src="https://upload.wikimedia.org/wikipedia/commons/0/02/SVG_logo.svg" alt="SVG" /><br>
<img class="webp" src="https://gstatic.com/webp/gallery/1.webp" width="100" alt="webP" /><br>
"""#
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