import Foundation
let pattern = #"(or|and|(?:(?P<case1namE>)\() ?|) ?\w*(\.)?colz( like| ?\=) ?\?(?:(?P=case1namE) OR)?( and)?"#
let regex = try! NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines, .caseInsensitive])
let testString = #"""
technology=? AND tbl.colz = ?(notes.user_id like ? OR votes_count like ? OR notes.id like ?
OR notes.note like ? OR notes.link like ? OR notes.description like ?
OR technology like ? OR notes.code_link like ? OR notes.priority like ? OR notes.created_at like ?
OR notes.updated_at like ? OR notes.technology_id = ? OR notes.user_id like ?)
//replace colz with any column name(ex: technology_id) and it should work just as expected
//this expression is to capture and remove "having" columns from query without any error
"""#
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