Lightregex

A lightweight regular expression operation.

Usage

1. Checks if the regular expression matches a string.

   let regx: Lightregex = "^1[3|4|5|6|7|8][0-9]\\d{4,8}$"
   print(regx.match(in: "17012345678"))	// true
   
   // OR
   "17012345678".contains("^1[3|4|5|6|7|8][0-9]\\d{4,8}$")

2. Get matching string(s).

   let regx: Lightregex = "(\\d{3})-(\\d{3,8})"
   let res = regx.wholeMatch(in: "Tel: 010-12345 & 027-12345678")
   print(res.map { $0.string })	// ["010-12345", "027-12345678"]
   print(res.map { $0.groups })	// [["010", "12345"], ["027", "12345678"]]
   
   // OR
   "Tel: 010-12345 & 027-12345678".wholeMatch(regx: "(\\d{3})-(\\d{3,8})")

3. Replace string using a template string.

   let text = "I bought this pair of shoes for $50 this afternoon at 3pm."
   let regx = Lightregex("\\d")!
   let res = regx.replacing(in: text, replacement: "*")
   print(res)		// "I bought this pair of shoes for $** this afternoon at *pm."
   
   // OR
   text.replacing("\\d", with: "*")

4. Replace string with transform.

   let regx: Lightregex = "\\d"
   let res = regx.replacing(in: "A1B23C45D678E") { "\(Int($0)! * 2)" }
   print(res)	// "A2B46C810D121416E"
   
   let regx: Lightregex = "\\d+"
   let res = regx.replacing(in: "A1B23C45D678E") { "\(Int($0)! * 2)" }
   print(res)	// "A2B46C90D1356E"
   
   // OR
   "A1B23C45D678E".replacing("\\d+") { "\(Int($0)! * 2)" }