import Foundation
let pattern = #"""
\.(3gpp?
|a(vi|sf|iff?)
|fl(ac|v)
|m(4a|ov|3u|id|kv|p\d+|pg\d*|peg\d*)
|ogg
|w(av|ebm|m[av])
)
"""#
let regex = try! NSRegularExpression(pattern: pattern, options: [.caseInsensitive, .allowCommentsAndWhitespace])
let testString = #"""
.m4a .wav .ogg .flac .avi .flv .mov .m3u .mid .webm .mkv .asf
.mpg .mpeg .mp10 .mpg10 .mpeg13
.aif AND .aiff
.3gp AND .3gpp
.wma AND .wmv
bla.mp3 bla bla.mid.mp3.mp4.mid.mp10.mpeg.mpg.mpg10
"""#
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