Created
December 24, 2012 19:57
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javascript utf8
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/** | |
* | |
* UTF-8 data encode / decode | |
* http://www.webtoolkit.info/ | |
* | |
**/ | |
var Utf8 = { | |
// public method for url encoding | |
encode : function (string) { | |
string = string.replace(/\r\n/g,"\n"); | |
var utftext = ""; | |
for (var n = 0; n < string.length; n++) { | |
var c = string.charCodeAt(n); | |
if (c < 128) { | |
utftext += String.fromCharCode(c); | |
} | |
else if((c > 127) && (c < 2048)) { | |
utftext += String.fromCharCode((c >> 6) | 192); | |
utftext += String.fromCharCode((c & 63) | 128); | |
} | |
else { | |
utftext += String.fromCharCode((c >> 12) | 224); | |
utftext += String.fromCharCode(((c >> 6) & 63) | 128); | |
utftext += String.fromCharCode((c & 63) | 128); | |
} | |
} | |
return utftext; | |
}, | |
// public method for url decoding | |
decode : function (utftext) { | |
var string = ""; | |
var i = 0; | |
var c = c1 = c2 = 0; | |
while ( i < utftext.length ) { | |
c = utftext.charCodeAt(i); | |
if (c < 128) { | |
string += String.fromCharCode(c); | |
i++; | |
} | |
else if((c > 191) && (c < 224)) { | |
c2 = utftext.charCodeAt(i+1); | |
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63)); | |
i += 2; | |
} | |
else { | |
c2 = utftext.charCodeAt(i+1); | |
c3 = utftext.charCodeAt(i+2); | |
string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)); | |
i += 3; | |
} | |
} | |
return string; | |
} | |
} |
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