import Foundation
let pattern = #"^([ ])?\[(\/?)gaiarch(=[^"]*)?]([ ])?|([ ])?\[(\/?)gaiarch(=[^"]*)?]([ ])?$"#
let regex = try! NSRegularExpression(pattern: pattern, options: .caseInsensitive)
let testString = #"""
[gaiarch=slider]
[img url="http://i1251.photobucket.com/albums/hh543/Knight-Yoshi/trade_c.png" text="Trading Image" goto="http://www.gaiaonline.com/gaia/bank.php?mode=trade&uid=15388423"],[img url="http://i1251.photobucket.com/albums/hh543/Knight-Yoshi/friend_c.png" text="Friends Image" goto="http://www.gaiaonline.com/friends/add/15388423"][/gaiarch]
[gaiarch=slider][img url="http://i1251.photobucket.com/albums/hh543/Knight-Yoshi/gaiaonline/thread/post/dark-center_bottom_zps419960f4.gif" text="bottom bar"]
[img url="http://i1251.photobucket.com/albums/hh543/Knight-Yoshi/gaiaonline/thread/post/star-say_right_zpsdc3769f3.png" goto="http://www.gaiaonline.com/"][/gaiarch]
"""#
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