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Posted By

lfatr on 06/12/08


Tagged

utf8


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encode_utf8

Published in: JavaScript 

from the german selfhtml website

Plain TextExpand 
  1. function encode_utf8(rohtext) {
  2.          // dient der Normalisierung des Zeilenumbruchs
  3.           rohtext = rohtext.replace(/
  4. /g,"\n");
  5.           var utftext = "";
  6.            for(var n=0; n<rohtext.length; n++)
  7.                 {
  8.                // ermitteln des Unicodes des  aktuellen Zeichens
  9.                var c=rohtext.charCodeAt(n);
  10.                 // alle Zeichen von 0-127 => 1byte
  11.                 if (c<128)
  12.                   utftext += String.fromCharCode(c);
  13.                  // alle Zeichen von 127 bis 2047 => 2byte
  14.                else if((c>127) && (c<2048)) {
  15.                    utftext += String.fromCharCode((c>>6)|192);
  16.                    utftext += String.fromCharCode((c&63)|128);}
  17.                  // alle Zeichen von 2048 bis 66536 => 3byte
  18.                 else {
  19.                     utftext += String.fromCharCode((c>>12)|224);
  20.                     utftext += String.fromCharCode(((c>>6)&63)|128);
  21.                    utftext += String.fromCharCode((c&63)|128);}
  22.                 }
  23.             return utftext;
  24.         }

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