Windows-1251 to Unicode converter

win2unicode.js

/**
 * Windows-1251 to Unicode converter
 * Useful when having to use GET query parameters.
 * e.g. unescaped "%F2%E5%EA%F1%F2", "òåêñò" becomes "текст"
 * Source: http://xpoint.ru/know-how/JavaScript/PoleznyieFunktsii?38#PerekodirovkaIzWindows1251IKOI
 */
function win2unicode(str) {
   var charmap   = unescape(
      "%u0402%u0403%u201A%u0453%u201E%u2026%u2020%u2021%u20AC%u2030%u0409%u2039%u040A%u040C%u040B%u040F"+
      "%u0452%u2018%u2019%u201C%u201D%u2022%u2013%u2014%u0000%u2122%u0459%u203A%u045A%u045C%u045B%u045F"+
      "%u00A0%u040E%u045E%u0408%u00A4%u0490%u00A6%u00A7%u0401%u00A9%u0404%u00AB%u00AC%u00AD%u00AE%u0407"+
      "%u00B0%u00B1%u0406%u0456%u0491%u00B5%u00B6%u00B7%u0451%u2116%u0454%u00BB%u0458%u0405%u0455%u0457")
   var code2char = function(code) {
               if(code >= 0xC0 && code <= 0xFF) return String.fromCharCode(code - 0xC0 + 0x0410)
               if(code >= 0x80 && code <= 0xBF) return charmap.charAt(code - 0x80)
               return String.fromCharCode(code)
            }
   var res = ""
   for(var i = 0; i < str.length; i++) res = res + code2char(str.charCodeAt(i))
   return res
}