ServiceNow workflow script to read a TASK attachment and put the comments into a JSON format within the task.

read_attachment_into_task.wf

var tableName = 'sc_req_item';
var sysIDOfRecord = current.sys_id;
//Declare a new instance of GlideSysAttachment. 
var gsa = new GlideSysAttachment();
//Get the raw bytes in the file
var bytesInFile = gsa.getBytes(tableName, sysIDOfRecord); 
//Convert that jive into a string using Java/Rhino. 
var dataAsString = Packages.java.lang.String(bytesInFile);
//Re-convert to a string in Javascript, cause we don't trust Rhino.
csv = String(dataAsString);

current.work_notes = csv;
current.u_json_data = csvJSON(csv);

//var csv is the CSV file with headers
function csvJSON(csv){
  var lines=csv.split("\n");
  var result = [];
  var headers=lines[0].split(",");
  for(var i=1;i<lines.length;i++){
	  var obj = {};
	  var currentline=lines[i].split(",");
	  for(var j=0;j<headers.length;j++){
		  obj[headers[j].trim()] = currentline[j].trim();
	  }
	  result.push(obj);
  }
  //return result; //JavaScript object
  return JSON.stringify(result); //JSON
} // end function