Generate the unicodeRanges property for Flex font embed

flex_embed_unicode_ranges.js

function flexEmbedCharUnicode(charCode) {
  var leadingZeros = '';
  for (var i = 0; i < 4 - charCode.length; i++) {
    leadingZeros += '0';
  }
  return 'U+' + leadingZeros + charCode;
}

function flexEmbedUnicodeRanges(string) {
  var unicodeRange = []
  var temp = '';
  for (var i = 0; i < string.length; i++) {
    temp = flexEmbedCharUnicode(string.charCodeAt(i).toString(16));
    if (unicodeRange.indexOf(temp) === -1) {
      unicodeRange.push(temp);
    }
  }
  return unicodeRange.join(',');
}