import Foundation
let pattern = #"(?:===Verb===|===Noun===|===Adjective===|===Adverb===)(.*?)====Translations===="#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = ##"<root><h level="2" i="1">==English==</h> <template lineStart="1"><title>wikipedia</title><part><name>dab</name>=<value>overflow</value></part><part><name>lang</name>=<value>en</value></part></template> <h level="3" i="2">===Etymology===</h> From <template><title>prefix</title><part><name index="1"/><value>over</value></part><part><name index="2"/><value>flow</value></part><part><name>lang</name>=<value>en</value></part></template>. Literally corresponds to <template><title>term</title><part><name index="1"/><value>superfluous</value></part><part><name>lang</name>=<value>en</value></part></template>, which is from Latin, rather than Germanic. <h level="3" i="3">===Pronunciation===</h> * <template><title>a</title><part><name index="1"/><value>RP</value></part></template> ** <template><title>sense</title><part><name index="1"/><value>noun</value></part></template> <template><title>enPR</title><part><name index="1"/><value>ōʹvə-flō'</value></part></template>, <template><title>IPA</title><part><name index="1"/><value>/ˈəʊvəˌfləʊ/</value></part><part><name>lang</name>=<value>en</value></part></template> ** <template><title>sense</title><part><name index="1"/><value>verb</value></part></template> <template><title>enPR</title><part><name index="1"/><value>ō'və-flōʹ</value></part></template>, <template><title>IPA</title><part><name index="1"/><value>/ˌəʊvəˈfləʊ/</value></part><part><name>lang</name>=<value>en</value></part></template> * <template><title>a</title><part><name index="1"/><value>GenAm</value></part></template> ** <template><title>sense</title><part><name index="1"/><value>noun</value></part></template> <template><title>enPR</title><part><name index="1"/><value>ōʹvər-flō'</value></part></template>, <template><title>IPA</title><part><name index="1"/><value>/ˈoʊvɚˌfloʊ/</value></part><part><name>lang</name>=<value>en</value></part></template> ** <template><title>sense</title><part><name index="1"/><value>verb</value></part></template> <template><title>enPR</title><part><name index="1"/><value>ō'vər-flōʹ</value></part></template>, <template><title>IPA</title><part><name index="1"/><value>/ˌoʊvɚˈfloʊ/</value></part><part><name>lang</name>=<value>en</value></part></template> * <template><title>rhymes</title><part><name index="1"/><value>əʊ</value></part><part><name>lang</name>=<value>en</value></part></template> <h level="3" i="4">===Noun===</h> <template lineStart="1"><title>en-noun</title></template> # The [[spillage]] resultant from overflow; [[excess]]. # [[outlet|Outlet]] for escape of excess material. # <template><title>context</title><part><name index="1"/><value>computing</value></part><part><name>lang</name>=<value>en</value></part></template> The situation where a value exceeds the available [[numeric]] [[range]]. <h level="4" i="5">====Translations====</h> <template lineStart="1"><title>trans-top</title><part><name index="1"/><value>spillage</value>"##
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