JavaScript_javascript スキルでの sprintf および printf 関数の実装

sprintfWrapper = {

init : function () {

if (引数の種類 == "未定義") { return null; }
    if (arguments.length     if (引数の種類[0] != "文字列") { null を返します。 }
    if (typeof RegExp == "未定義") { return null; }

var string = 引数[0];
    var exp = new RegExp(/(%([%]|(-)?( |x20)?(0)?(d )?(.(d)?)?([bcdfosxX])))/g);
    varmatches = new Array();
    var strings = new Array();
    var convCount = 0;
    var stringPosStart = 0;
    var stringPosEnd = 0;
    var matchPosEnd = 0;
    var newString = '';
    var match = null;

while (match = exp.exec(string)) {
      if (match[9]) { convCount = 1; }

stringPosStart = matchPosEnd;
      stringPosEnd = exp.lastIndex - match[0].length;
      strings[strings.length] = string.substring(stringPosStart, stringPosEnd);

matchPosEnd = exp.lastIndex;
      一致[一致.長さ] = {
        一致: 一致[0]、
        左: match[3] ? true : false、
        符号: 一致[4] || ''、
        パッド: 一致[5] || ' '、
        最小: 一致[6] || 0、
        精度: match[8]、
        コード: 一致[9] || '%'、
        負の場合: parseInt(arguments[convCount]) < 0 ? true : false、
        引数: String(arguments[convCount])
      };
    }
    strings[strings.length] = string.substring(matchPosEnd);

if (matches.length == 0) { 文字列を返します。 }
    if ((arguments.length - 1) < convCount) { return null; }

var code = null;
    var match = null;
    var i = null;

for (i=0; i

if (matches[i].code == '%') { substitution = '%' }
      else if (matches[i].code == 'b') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(2));
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'c') {
        matches[i].argument = String(String.fromCharCode(parseInt(Math.abs(parseInt(matches[i].argument)))));
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'd') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)));
        置換 = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'f') {
        matches[i].argument = String(Math.abs(parseFloat(matches[i].argument)).toFixed(matches[i].precision ?matches[i].precision : 6));
        置換 = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'o') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(8));
        置換 = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 's') {
        matches[i].argument =matches[i].argument.substring(0,matches[i].precision ?matches[i].precision :matches[i].argument.length)
        substitution = sprintfWrapper.convert(matches[i], true);
      }
      else if (matches[i].code == 'x') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
        置換 = sprintfWrapper.convert(matches[i]);
      }
      else if (matches[i].code == 'X') {
        matches[i].argument = String(Math.abs(parseInt(matches[i].argument)).toString(16));
        置換 = sprintfWrapper.convert(matches[i]).toUpperCase();
      }
      他 {
        substitution =matches[i].match;
      }

newString = strings[i];
      newString = 置換;

}
    newString = strings[i];

return newString;

}、

変換 : function(match, nosign){
    if (nosign) {
      match.sign = '';
    } else {
      match.sign = match.negative ? '-' : match.sign;
    }
    var l = match.min - match.argument.length 1 - match.sign.length;
    var Pad = new Array(l     if (!match.left) {
      if (match.pad == "0" || nosign) {
        return match.sign パッド match.argument;
      } else {
        リターンパッド match.sign match.argument;
      }
    } else {
      if (match.pad == "0" || nosign) {
        return match.sign match.argument Pad.replace(/0/g, ' ');
      } else {
        return match.sign match.argument パッド;
      }
    }
  }
}

sprintf = sprintfWrapper.init;