[indesign][extendscript]保存毎に前回保存時のコピーを残す

docSaveWithTimestamp.jsx

#targetengine "logging"

var timeStamp = function(d){
    var i,ary;
    if(!d){ d = new Date() };
    ary = [
        d.getFullYear(),(d.getMonth()+1),d.getDate(),
        d.getHours(),d.getMinutes(),d.getSeconds()
    ];
    for(i=0,len=ary.length;i<len;i++){
        ary[i] = (ary[i]<10)? '0'+ary[i]:''+ary[i];
    };
    return ary.join('-');
};

var docSaveWithTimeStamp = function(doc){
  var saveEvent = doc.addEventListener (
      'beforeSave',
      function(ev){
          var docFile = ev.fullName;
          if(docFile){
              var withTimeStamp = docFile.absoluteURI.replace(
                     /\.indd$/,
                     '_'+timeStamp(docFile.modified)+'.indd'
              );
              docFile.copy(withTimeStamp);
          }
      }
  );
};

(function(){
  app.addEventListener('afterNew',function(ev){docSaveWithTimeStamp(ev.target)});
  app.addEventListener('afterOpen',function(ev){docSaveWithTimeStamp(ev.target)});
}());