A javascript screen form parser I wrote in 2002. lol

oldParser.js

function SplitIt(macsplit) {

  var temp = new Array();
  var reversed = new Array();
  var re_macsplit = /[A-F0-9]/;

  var j = 0;
  for (var i = 0; i < macsplit.length; i++) { // Loop through whole MAC ID string
    if (re_macsplit.test(macsplit[i])) { // Match to hexidecimal number regexp
      temp[j] = macsplit[i]; // Assign number to the array item
      j++;
    }
  }

  temp.reverse(); // reverse the array order
  var beginning = macsplit.length; // assign var length to variable
  for (beginning; beginning < 12; beginning++) { // Add zeroes until total array length = 12
    temp[beginning] = "0";
  }

  temp.reverse(); // reverse the array order back to normal
  var octet1 = temp[0] + temp[1] + temp[2] + temp[3]; // assign array item value groups to vars
  var octet2 = temp[4] + temp[5] + temp[6] + temp[7];
  var octet3 = temp[8] + temp[9] + temp[10] + temp[11];

  var results;
  results = octet1 + "." + octet2 + "." + octet3; // format final MAC ID result
  return results;

} // end function

function toUpper(x) { // modified from http://developer.irt.org/script/531.htm
  var pattern = /(\w)(\w*)/; // a letter, and then one, none or more letters
  var a = x.split(/\s+/g); // split the sentence into an array of words
  for (i = 0; i < a.length; i++) {
    var parts = a[i].match(pattern); // just a temp variable to store the fragments in.
    var firstLetter = parts[1].toUpperCase();
    var restOfWord = parts[2].toLowerCase();

    a[i] = firstLetter + restOfWord; // re-assign it back to the array and move on
  }

  x = a.join(' '); // join it back together
  return x;
}



function ParseIt() {

  var scratch = window.document.parserform.parse_window.value; // Put the window contents into a string variable
  var words = new Array(); // Define an array for the window contents
  words = scratch.split(" "); // Split the string at all spaces
  var print = new Array(); // Define a variable for the output
  var results = new Array();
  var phonenumber = new Array;
  var number = new Array();



  var fname = "FIRSTNAME"; // Define variables for the information we want to extract
  var lname = "LASTNAME";
  var initial = "X";
  var corp = "XXXXX"
  var account = "999999";
  var customer = "99";
  var house = "9999";
  var street = "STREET";
  var street_type = "SX";
  var apt = "999";
  var zip = "99999";
  var macids = new Array();
  var macarray = new Array();
  var nsew = "X";
  var title = "XX";


  // Here are the regular expressions assigned to variables.
  var re_fname = /\D{2,10}/;
  var re_title = /^MR|^DR|^MS|^RV/i;
  var re_titlef = /[^a-zA-Z]frst\b/;
  var re_initial = /\b([A-Z])\b/;
  var re_initialf = /[^a-zA-Z]lst\b/;
  var re_lname = /[a-zA-Z]{2,10}/;
  var re_corp = /04512|05034|10340|10380|10383|10385|17206/;
  var re_account = /\((\d{6})\-/;
  var re_customer = /([0-9]{1,2})\)$/;
  var re_compacct = /\((\d{6})\-([ \d]+)\)/;
  var re_phone = /\((\d{3})\)(\d{3})\-(\d{4})/g;
  var re_zip = /9\d{4}/;
  var re_macids = /([\dA-F]{9,12}\b)/i;
  var re_initial = /[A-Z]{1}/;
  var re_nsew = /\b([NSEW])\b/;
  var re_house = /\d{1,5}/;
  var re_apt = /[\dA-Z]+/i;
  var re_street_type = /\b(ST|RD|DR|AV|AVE|LN|CI|CT|BLVD|BL|PW)\b/i;
  var re_space = /\b/;
  var re_digit = /\d./;
  var re_nondigit = /\D./;
  var re_ctype = /type\b/;


  // Initialize counters for the parse loops
  var j = 0;
  var k = 0;
  var l = 0;


  // Parse the text
  for (var i = 0; i < words.length; i++) { // Loop until the whole array is done
    if (re_space.test(words[i])) { // Use the space (word boundary) test above
      print[j] = words[i]; // If it's a good match, add it to the print array
      j++;
    }
  }



  for (var i = 0; i < print.length; i++) {

    // complete account compacct
    if (re_compacct.test(print[i])) { // check to see if the account has a two-digit cust. no.
      account = print[i].replace(re_compacct, "$1"); // split the string into account
      customer = print[i].replace(re_compacct, "$2"); // and customer no.
    } else {

      // account number
      if (re_account.test(print[i])) { // Checks to see if array item matches the account number
        account = print[i].replace(re_account, "$1"); // assign value and get rid of extra characters
      }

      // corp number "corp"
      if (re_corp.test(print[i])) { // Does the array item look like a corp number?
        corp = print[i];
      }

      if (corp.length == 4) {
        corp = "0" + corp;
      }


      // customer number "customer"
      if (re_customer.test(print[i])) { // Does the array item look like a customer number?
        customer = print[i].replace(re_customer, "$1"); // assign value and get rid of extra characters
        if (customer < 10) {
          customer = "0" + customer;
        }
      }
    }


    // phone numbers
    var phonen = "";
    var phonen2 = "";

    if (re_phone.test(print[i])) {
      phonenumber[l] = print[i].replace(re_phone, "$1") + "-" + print[i].replace(re_phone, "$2") + "-" + print[i].replace(re_phone, "$3");
      number[l] = print[i].replace(re_phone, "$1") + print[i].replace(re_phone, "$2") + print[i].replace(re_phone, "$3");
      l++;
    }

    for (var x = 0; x < phonenumber.length; x++) {
      phonen = phonen + " " + phonenumber[x];
      phonen2 = phonen2 + "\r" + number[x];
    }

    // street type "street_type", street "street", zip "zip", apartment number "apt",
    // street direction "nsew", house number "house"
    if (re_street_type.test(print[i])) {
      street_type = print[i];
      street = print[i - 1];

      if (re_nsew.test(print[i - 2])) {
        house = print[i - 3];
        nsew = print[i - 2];
      }

      if (re_nsew.test(print[i - 3])) {
        street = print[i - 2] + " " + street;
        nsew = print[i - 3];
        house = print[i - 4];
      } else {
        nsew = "";

        if (re_digit.test(print[i - 2])) {
          house = print[i - 2];
          street = print[i - 1];
        }

        if (re_digit.test(print[i - 4])) {
          house = print[i - 4];
          street = print[i - 2] + " " + street;
        }
      }


      if (print[i + 1] == "#") {
        apt = print[i + 2];
        zip = print[i + 3];
      }

      if (re_zip.test(print[i + 2])) {

        if (re_digit.test(print[i + 1])) {
          apt = print[i + 1];
          zip = print[i + 2];
        }
      } else {
        zip = print[i + 1];
        apt = "";
      }

    }


    // find "tl/frst" field, first name "fname"
    if (re_titlef.test(print[i])) {

      if (re_title.test(print[i + 1])) {
        title = print[i + 1];

        if (print[i + 3] == "class") {
          fname = print[i + 2];
        } else {
          fname = print[i + 2] + " " + print[i + 3];
        }
      } else {
        fname = print[i + 1];
        title = " ";
      }

    }


    // find "int/lst" field, last name "lname", initial "initial"
    // This bit was painstakingly written by the book: conceptualized, modeled, metacoded, coded
    if (re_initialf.test(print[i])) {

      if (re_ctype.test(print[i + 2])) {
        lname = print[i + 1];
        initial = "";
      }

      if (re_ctype.test(print[i + 4])) {
        lname = print[i + 2] + " " + print[i + 3];
        initial = print[i + 1];
      }

      if (re_ctype.test(print[i + 3])) {

        if (re_initial.test(print[i + 1])) {
          initial = print[i + 1];
          lname = print[i + 2];
        } else {
          initial = "";
          lname = print[i + 1] + " " + print[i + 2];
        }
      }
    }


    // find MAC ID
    if (re_macids.test(print[i])) {
      if (print[i].length < 12) {
        macids[k] = print[i];
        macarray[k] = SplitIt(macids[k]);
        k++;
      }
    }
  } // end for
  var macout = "\r";

  for (var x = 0; x < macarray.length; x++) {
    macarray[x] = macarray[x].toLowerCase();
    macout = "Modem MAC#: " + macarray[x] + "\r" + macout;
  }


  // format variables
  var ELNfullaccount = corp + account + customer;
  var fullaccount = corp + "-" + account + "-" + customer;
  var name = fname + " " + lname; // make full name line from first and last names
  name = toUpper(name); // Use toUpper function to fix formatting
  var printline = "Account: " + fullaccount + "\r" + name; // make account line
  printline = toUpper(printline);

  if (nsew !== "") {
    nsew = nsew + ".";
  }

  if (apt !== "") {
    apt = "Apt. " + apt;
  }

  if (street_type !== "") {
    street_type = street_type + "."; // add a period to the street type variable
  }

  var addline = house + " " + nsew + " " + street + " " + street_type + " " + apt + zip; // make address line from vars
  addline = toUpper(addline);

  // Print results to textarea in form
  window.document.parserform.parse_window.value = "Account Information" + "\r\r" + "Customer Name: " + name + "\r" + "Account: " + fullaccount + "\r" + macout + "\r" + "Address: " + addline + "\r" + "Phone Number(s): " + phonen + "\r" + "\r\rEarthlink &amp; WebDT Format\r" + "Phone: " + phonen2 + "\r" + "Account: \r" + ELNfullaccount;

}