Function tokenize

lib/printf.js:4–36

(/*String*/ str, /*RegExp*/ re, /*Function?*/ parseDelim, /*Object?*/ instance)

var util = require('util');

var tokenize = function(/*String*/ str, /*RegExp*/ re, /*Function?*/ parseDelim, /*Object?*/ instance){
  // summary:
  //    Split a string by a regular expression with the ability to capture the delimeters
  // parseDelim:
  //    Each group (excluding the 0 group) is passed as a parameter. If the function returns
  //    a value, it's added to the list of tokens.
  // instance:
  //    Used as the "this' instance when calling parseDelim
  var tokens = [];
  var match, content, lastIndex = 0;
  while((match = re.exec(str))){
    content = str.slice(lastIndex, re.lastIndex - match[0].length);
    if(content.length){
      tokens.push(content);
    }
    if(parseDelim){
      var parsed = parseDelim.apply(instance, match.slice(1).concat(tokens.length));
      if(typeof parsed != 'undefined'){
        if(parsed.specifier === '%'){
          tokens.push('%');
        }else{
          tokens.push(parsed);
        }
      }
    }
    lastIndex = re.lastIndex;
  }
  content = str.slice(lastIndex);
  if(content.length){
    tokens.push(content);
  }
  return tokens;
};

var Formatter = function(/*String*/ format){
  this._mapped = false;