import Foundation
let pattern = #"<\?xml(.+?)\?>"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
<?xml version="1.0" encoding="utf-8"?>
<ns1:StudySQL_response xmlns:ns1="urn:global:cs:jdbc:study">
<Statement_response>
<row>
<XMLTYPE.GETSTRINGVAL(MESSAGE)><study studypid="200">
<studyname>&quot;Immume Treat Phase3&quot;</studyname>
<statusCD>ongoing</statusCD>
<clinicalphase>III</clinicalphase>
<primaryIndication>for lung cancer</primaryIndication>
<startDate>2010-Jun-28</startDate>
</study>
</XMLTYPE.GETSTRINGVAL(MESSAGE)>
</row>
<row>
<XMLTYPE.GETSTRINGVAL(MESSAGE)><study studypid="201">
<studyname>&quot;ABPM Study&quot;</studyname>
<statusCD>on hold</statusCD>
<clinicalphase>III</clinicalphase>
<primaryIndication>skin cancel</primaryIndication>
<startDate>2015-Mar-08</startDate>
</study>
</XMLTYPE.GETSTRINGVAL(MESSAGE)>
</row>
</Statement_response>
</ns1:StudySQL_response>
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
if let firstMatch = regex.firstMatch(in: testString, range: stringRange) {
let result: [String] = (1 ..< firstMatch.numberOfRanges).map { (testString as NSString).substring(with: firstMatch.range(at: $0)) }
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