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853 :: [Question] Dynamic RE replacement

• AxBen (orginal) [2015-02-09T11:08:44+01:00] view original

  How would I effectively convert the following JavaScript code to Nim:

  name = name.replace(/%([0-9a-f]{2})/gi, Escape);
  
  function Escape(match0, match1, index, source) {
     return String.fromCharCode(parseInt("0x" + match1));
  }
  Run

  Is there an alternative to findBounds()?

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• BlaXpirit (orginal) [2015-02-09T23:15:20+01:00] view original

  nre

  import future, strutils
  import nre
  
  var name = "Hello,%20World%21"
  
  name = name.replace(
    re"%[0-9a-f]{2}",
    (s: string) => $chr(parseHexInt(s.substr(1)))
  )
  Run

  Alternatively

  name = name.replace(
    re"%([0-9a-f]{2})",
    (m: RegexMatch) => $chr(parseHexInt(m.captures[0]))
  )
  Run

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• fadg44a3w4fe (orginal) [2015-02-10T16:37:17+01:00] view original

  Also https://github.com/Araq/Nim/pull/1855, although I need to get around to looking into the performance regression it brings. I'll try to get it merged in soon.

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