[JavaScript] Parse delimiter-separated values (CSV, TSV...)

parseDSV.js

// Comma-separated values to JSON
function parseCSV(data) {
  return parseDSV(data, ",");
}

// Tabulation-separated values to JSON
function parseTSV(data) {
  return parseDSV(data, "\t");
}

// Delimiter-separated values to JSON
function parseDSV(data, separator) {
  var lines = data.split("\n");
  var headers = lines[0].split(separator);
  var result = [];
  for (var i = 1, len = lines.length; i < lines.length; i++) {
	  var obj = {};
	  var line = lines[i].split(separator);
 
	  for (var j = 0, len = headers.length; j < headers.length; j++) {
		  obj[headers[j]] = line[j];
	  }
 
	  result.push(obj);
  }
  return result;
}

sample.js

// Using the file above, parse a CSV to JSON

// Our CSV input
var csv = [
    "firstname,name,age",
    "John,Doe,56",
    "Pierre-Paul,Jacques,42",
    "Max,Mustermann,37",
    "João,das Couves,59"
].join("\n");
// Parse it to a JavaScript Object
var obj = parseDSV(csv);
// Print a pretty JSON representation in console
console.log(JSON.stringify(obj, null, "\t"));