PS3 script to batch rename layers

Question

Sometimes, I make copies of layers (for example: copy little diamonds to align into a shape of the letter M). Each time I "alt+drag" the content in that layer (to make a copy of it), PS makes a copy and then appends the name of the layer to something like "diamond copy 3". After making a ton of copies (and because I'm anal about having actual names for each layer), I want each layer to read "diamond". Instead of manually renaming all these layers, is there a way to highlight the affected layers and choose to rename all layers according to what you want?

Answer 1

Try this. Just select the layers you want 'copy' removed from and run this script.
if( app.documents.length > 0 ){
app.activeDocument.suspendHistory('Rename selected layers','removeCopyFromSelectedLayersNames()');
function removeCopyFromLayerName(){
     if( getSelectedLayersIdx().length > 1 ){
          var selectedLayers = getSelectedLayersIdx();
          makeActiveByIndex( selectedLayers[0], false );
   var startLoop = Number( !hasBackground() );
   var endLoop = getNumberOfLayer() + 1;
   for( var l = startLoop;l < endLoop; l++){
        while( !isValidActiveLayer( l ) ) {
            l++;
          var oldName =  getLayerNameByIndex( l );
          var newName = oldName.replace(/\scopy\s?\d*$/i,'');
          putLayerNameByIndex( l, newName )
     if( selectedLayers != undefined ) makeActiveByIndex( selectedLayers, false );
function removeCopyFromSelectedLayersNames(){
     var selectedLayers = getSelectedLayersIdx();
     for( var l = 0;l < selectedLayers.length; l++){
          var oldName =  getLayerNameByIndex( selectedLayers[ l ] );
          var newName = oldName.replace(/\scopy.*$/i,'');
          makeActiveByIndex( selectedLayers[ l ], false );
          putLayerNameByIndex( selectedLayers[ l ], newName )
     makeActiveByIndex( selectedLayers, false );
function getNumberOfLayer(){
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
var desc = executeActionGet(ref);
var numberOfLayer = desc.getInteger(charIDToTypeID('NmbL'));
return numberOfLayer;
function getLayerNameByIndex( idx ) {
    var ref = new ActionReference();
    ref.putProperty( charIDToTypeID('Prpr') , charIDToTypeID( 'Nm  ' ));
    ref.putIndex( charIDToTypeID( 'Lyr ' ), idx );
    return executeActionGet(ref).getString(charIDToTypeID( 'Nm  ' ));;
function putLayerNameByIndex( idx, name ) {
     if( idx == 0 ) return;
    var desc = new ActionDescriptor();
        var ref = new ActionReference();
        ref.putIndex( charIDToTypeID( 'Lyr ' ), idx );
    desc.putReference( charIDToTypeID('null'), ref );
        var nameDesc = new ActionDescriptor();
        nameDesc.putString( charIDToTypeID('Nm  '), name );
    desc.putObject( charIDToTypeID('T   '), charIDToTypeID('Lyr '), nameDesc );
    executeAction( charIDToTypeID('setd'), desc, DialogModes.NO );
function getActiveLayerIndex() {
     var ref = new ActionReference();
     ref.putProperty( 1349677170 , 1232366921 );
     ref.putEnumerated( 1283027488, 1332896878, 1416783732 );
     var res = executeActionGet(ref).getInteger( 1232366921 )
                                                       - Number( hasBackground() );
     return res;  
function isValidActiveLayer( idx ) {
     var propName = stringIDToTypeID( 'layerSection' );
     var ref = new ActionReference();
     ref.putProperty( 1349677170 , propName);
     ref.putIndex( 1283027488, idx );
     var desc =  executeActionGet( ref );
     var type = desc.getEnumerationValue( propName );
     var res = typeIDToStringID( type );
     return res == 'layerSectionEnd' ? false:true;
function hasBackground(){
    var res = undefined;
    try{
        var ref = new ActionReference();
        ref.putProperty( 1349677170 , 1315774496);
        ref.putIndex( 1283027488, 0 );
        executeActionGet(ref).getString(1315774496 );;
        res = true;
    }catch(e){ res = false}
    return res;
function getSelectedLayersIdx(){
     var selectedLayers = new Array;
     var ref = new ActionReference();
     ref.putEnumerated( charIDToTypeID('Dcmn'), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
     var desc = executeActionGet(ref);
     if( desc.hasKey( stringIDToTypeID( 'targetLayers' ) ) ){
          desc = desc.getList( stringIDToTypeID( 'targetLayers' ));
          var c = desc.count
          var selectedLayers = new Array();
          for(var i=0;i<c;i++){
               selectedLayers.push(  desc.getReference( i ).getIndex());
     }else{
          var ref = new ActionReference();
          ref.putProperty( charIDToTypeID('Prpr') , charIDToTypeID( 'ItmI' ));
          ref.putEnumerated( charIDToTypeID('Lyr '), charIDToTypeID('Ordn'), charIDToTypeID('Trgt') );
          selectedLayers.push( executeActionGet(ref).getInteger(charIDToTypeID( 'ItmI' )));
     return selectedLayers;
function makeActiveByIndex( idx, visible ){
     if( idx.constructor != Array ) idx = [ idx ];
     for( var i = 0; i < idx.length; i++ ){
          var desc = new ActionDescriptor();
          var ref = new ActionReference();
          ref.putIndex(charIDToTypeID( 'Lyr ' ), idx[i])
          desc.putReference( charIDToTypeID( 'null' ), ref );
          if( i > 0 ) {
               var idselectionModifier = stringIDToTypeID( 'selectionModifier' );
               var idselectionModifierType = stringIDToTypeID( 'selectionModifierType' );
               var idaddToSelection = stringIDToTypeID( 'addToSelection' );
               desc.putEnumerated( idselectionModifier, idselectionModifierType, idaddToSelection );
          desc.putBoolean( charIDToTypeID( 'MkVs' ), visible );
          executeAction( charIDToTypeID( 'slct' ), desc, DialogModes.NO );