import Foundation
let pattern = #"\/\*[\s\S]*?\*\/|([^\\:]|^)\/\/.*$"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
// comments at the beginning of the file are removed
********************************************************
Please take note of the items highlighted in green//.
These are held in back reference "$1" which you MUST
use in your replacement value or else your program will
break.//
********************************************************
/*
Block comments are removed - easy peasy
*/
https://urls.are.preserved.for.you// and comments after them are removed
asdfasdf// the comment can bump right up to text
asdfasdf;// ...or a semicolon.
{
foo:// you will need a parser to remove this comment b/c it smells like a URL
"bar",// ...but not this one
boo: // ...or this one
"who"
}
x.replace(/\//g, '/');
}//
"""#
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