CompDuplicate.jsx

// コンポジションを選択した状態で実行、文字列を1文字ずつ分解して、その文字数分だけコンポジションを複製して"letter_"+nameの形で保存

// 処理書くの面倒だったんでこのへんでユニーク化してください
// http://kiteretsu-world.info/tool/reduce-character.shtml

var Lyrics = "キミスペクトル君だけの色に染めてよ"; //ここの中身を適度に変えてください

//配列化
Lyrics = Lyrics.split('');


// forEach使えないので使えるように

// Production steps of ECMA-262, Edition 5, 15.4.4.18
// Reference: http://es5.github.com/#x15.4.4.18
if ( !Array.prototype.forEach ) {
  Array.prototype.forEach = function( callback, thisArg ) {

    var T, k;

    if ( this == null ) {
      throw new TypeError( " this is null or not defined" );
    }

    // 1. Let O be the result of calling ToObject passing the |this| value as the argument.
    var O = Object(this);

    // 2. Let lenValue be the result of calling the Get internal method of O with the argument "length".
    // 3. Let len be ToUint32(lenValue).
    var len = O.length >>> 0; // Hack to convert O.length to a UInt32

    // 4. If IsCallable(callback) is false, throw a TypeError exception.
    // See: http://es5.github.com/#x9.11
    if ( {}.toString.call(callback) != "[object Function]" ) {
      throw new TypeError( callback + " is not a function" );
    }

    // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
    if ( thisArg ) {
      T = thisArg;
    }

    // 6. Let k be 0
    k = 0;

    // 7. Repeat, while k < len
    while( k < len ) {

      var kValue;

      // a. Let Pk be ToString(k).
      //   This is implicit for LHS operands of the in operator
      // b. Let kPresent be the result of calling the HasProperty internal method of O with argument Pk.
      //   This step can be combined with c
      // c. If kPresent is true, then

      if ( k in O ) {

        // i. Let kValue be the result of calling the Get internal method of O with argument Pk.
        kValue = O[ k ];

        // ii. Call the Call internal method of callback with T as the this value and
        // argument list containing kValue, k, and O.
        callback.call( T, kValue, k, O );
      }
      // d. Increase k by 1.
      k++;
    }
    // 8. return undefined
  };
}

// 選択しているアイテムを取得
var activeItem = app.project.activeItem;


if ((activeItem == null) || !(activeItem instanceof CompItem)) {
  alert("コンポジションを選択した状態で実行しよう");
}else{
  Lyrics.forEach(function(_){
    var curComp = activeItem.duplicate();
    curComp.name = "letter_"+_;
  })
}