get all skus from indesign

ItemSkuIndex_ALL_bob103119.jsx

pStyles = ['Table Cat. No./Price', 'Table Cat. No./Price+', 'CHEM cat no.', 'CHEM cat no.+', 'cat no for pg 176', 'cat no for pg 176+', 'MicroSlides CatNo./Price', 'MicroSlides CatNo./Price+', 'Slide Pricee', 'Slide Price+', 'ChemTopic_CatNo./Price', 'ChemTopic_CatNo./+']  
myRegXp = /([A-Z]){1,2}([0-9]){3,4}/
my2RegXp = /([A-Z]){1}([0-9]){1}/
my3RegXp = /([A-Z]){2}/
my5RegXp = /(^[A-Z]+)([0-9]+)/

app.findPreferences = app.changePreferences = null  
doc = app.activeDocument  
u = undefined  
if( doc.indexes.length == 0 )  
	doc.indexes.add()  

for( j = 0; j < pStyles.length; j++ )  
	{ 
	if( doc.paragraphStyles.item( pStyles[j] ) != null ) 
		{ 
		toMark = doc.search( u, u, u, u, { appliedParagraphStyle : pStyles[j] } )   
		for( i = toMark.length-1 ; i > -1; i-- )  
			{
			if( toMark[i].contents != "1397058884" ) //em-dash character
				{
				top = toMark[i].contents.replace( /[\u0001-\u001F\uFEFF]/g, '' )
				for( k = 0; k < top.length; k++ ){
					if ( myRegXp.test(top.substring(k,k+6)) ){
						//doc.indexes[0].topics.add( top )  
						//doc.indexes[0].topics.item( top ).pageReferences.add( toMark[i], PageReferenceType.currentPage )
						if ( my2RegXp.test(top.substring(k,k+2)) ){
							//matches A1234 format
							productLabel = doc.indexes[0].topics.add( "Products" )  
							productLabel.topics.add( top.substring(k,k+5) )
							productLabel.topics.item( top.substring(k,k+5) ).pageReferences.add( toMark[i], PageReferenceType.currentPage )
							}
						else if ( my3RegXp.test(top.substring(k,k+2)) ){
							//matches AB1234 format
							productLabel = doc.indexes[0].topics.add( "Products" )  
							productLabel.topics.add( top.substring(k,k+6) )
							productLabel.topics.item( top.substring(k,k+6) ).pageReferences.add( toMark[i], PageReferenceType.currentPage )
							}
						else if ( my5RegXp.test(top.substring(k,k+2))) {
							// should match all letter number combos - honestly
							productLabel = doc.indexes[0].topics.add( "Products" )  
							productLabel.topics.add( top.substring(k,k+7) )
							productLabel.topics.item( top.substring(k,k+7) ).pageReferences.add( toMark[i], PageReferenceType.currentPage )
						}
						break;
						}
					else{ 
						continue;
						}
					}
				}  
			}
		} 
	}