change text found in text layers of psd files with lorem

scramble.jsx

var dir = new Folder('/c/temp')
var files = dir.getFiles("*.psd");

for (var i = 0; i < files.length; i++) {
  var doc = app.open(files[i]);
  mutate(doc)
  doc.close(SaveOptions.SAVECHANGES)
}

function mutate(el)
{                                                                                                                                                                                                                            
  var layers = el.layers;                                                                                                                                                                                                    
  for (var layerIndex = layers.length; layerIndex > 0; layerIndex--)
  {                                                                                                                                                                                                                          
    var currentLayer = layers[layerIndex-1];                                                                                                                                                                                 
    if (currentLayer.typename == "LayerSet") {
      mutate(currentLayer);
    } else {                                                                                                                                                                                                                 
      if ( (currentLayer.visible) && (currentLayer.kind == LayerKind.TEXT) )
      {                                                                                                                                                                                                                      
        currentLayer.textItem.contents = loremize(lyr.textItem.contents);
      }
    }
  }
                                                                                                                                                                                                                             
}
                                                                                                                                                                                                                             
function loremize(c){                                                                                                                                                                                                        
  var out = "";                                                                                                                                                                                                              
  for(var i=0;i<c.length;i++){                                                                                                                                                                                               
    var ch=c[i];                                                                                                                                                                                                             
    var punctuation = (ch.match(/[_\.,!"'*%\[\]\$\\\-]/) != null)                                                                                                                                                               
    var unlorem = ( punctuation || ch.trim() == "" || ! isNaN(ch) );                                                                                                                                                         
    if (unlorem) {                                                                                                                                                                                                           
      out += ch                                                                                                                                                                                                              
      continue                                                                                                                                                                                                               
    }                                                                                                                                                                                                                        
    var uppercased = (ch == ch.toUpperCase());
    out += rnd(uppercased)                                                                                                                                                                                                   
  }                                                                                                                                                                                                                          
  return out;                                                                                                                                                                                                                
}                                                                                                                                                                                                                            
                                                                                                                                                                                                                             
function rnd(big) {                                                                                                                                                                                                          
  var RandomCharsToUse = "abcdefghijkmnpqrstuvwxyz";                                                                                                                                                                         
  if (big) {                                                                                                                                                                                                                 
    RandomCharsToUse = "ABCDEFGHJKLMNPQRSTUVWXYZ";                                                                                                                                                                           
  }
  var MinimumNumberOfCharacters = 1;                                                                                                                                                                                         
  var MaximumNumberOfCharacters = 1;                                                                                                                                                                                         
  RandomCharsToUse = RandomCharsToUse.replace(/\s/g,"");                                                                                                                                                                     
  MinimumNumberOfCharacters = parseInt(MinimumNumberOfCharacters);                                                                                                                                                           
  MaximumNumberOfCharacters = parseInt(MaximumNumberOfCharacters);                                                                                                                                                           
  if( MaximumNumberOfCharacters < MinimumNumberOfCharacters ) { MaximumNumberOfCharacters = MinimumNumberOfCharacters; }                                                                                                     
  var CharactersLength = RandomCharsToUse.length;                                                                                                                                                                            
  var StringLength = 0;                                                                                                                                                                                                      
  if( MaximumNumberOfCharacters == MinimumNumberOfCharacters ) { StringLength = MinimumNumberOfCharacters; }                                                                                                                 
  else { StringLength = Math.floor(Math.random()*(MaximumNumberOfCharacters-MinimumNumberOfCharacters+1)) + MinimumNumberOfCharacters; }                                                                                     
  var ReturnString = new String();                                                                                                                                                                                           
  while( ReturnString.length < StringLength ) { ReturnString += RandomCharsToUse.charAt(Math.floor(Math.random()*CharactersLength)); }                                                                                       
  return ReturnString;                                                                                                                                                                                                       
}