escapeCSV.js

escapeCsv = function(options) {
  this.options = options || {
    delimiter : ",",
    quote : '"',
    escape : '"'
  };
  
};
escapeCsv.prototype.escape = function(field) {
  if (field) {
    escape = this.options.escape;
    quote = this.options.quote;
    delimiter = this.options.delimiter;
    containsdelimiter = field.indexOf(delimiter) >= 0;
    containsQuote = field.indexOf(quote) >= 0;
    containsEscape = field.indexOf(escape) >= 0 && (escape !== quote);
    containsLinebreak = field.indexOf('\r') >= 0 || field.indexOf('\n') >= 0;
    shouldQuote = containsQuote || containsdelimiter || containsLinebreak || this.options.quoted || this.options.quotedString;
    if (shouldQuote && containsEscape) {
      regexp = escape === '\\' ? new RegExp(escape + escape, 'g') : new RegExp(escape, 'g');
      field = field.replace(regexp, escape + escape);
    }
    if (containsQuote) {
      regexp = new RegExp(quote, 'g');
      field = field.replace(regexp, escape + quote);
    }
    if (shouldQuote) {
      field = quote + field + quote;
    }
  }
  return field;
};