Removing an UTF BOM header

Some UTF file encodings have a special "BOM" sequence of characters (Byte Order Mark).

Example when viewing an UTF-8 with BOM file within an ISO-8859-1 editor:

John;Doe
Jane;Jackson

 

When reading such files, these first characters may be considered as part of the data.

In order to ignore them, a simple trick in Stambia is to add a transformation script to the File metadata, such as:

i=0;
j=0;
do
{
    i=__in__.read();
    j=j+1;
    /* return data only after third character */
    if(j>3)
    {
         if (i>-1)
         {
             ch=String.fromCharCode(i);
             i=ch.charCodeAt();
             __out__.write(i);
         } 
    }    
}while(i>-1);