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/***********************************************************************/
/* O'Browser */
/* */
/* Copyright 2008 Benjamin Canou. This file is distributed under the */
/* terms of the GNU Library General Public License described in file */
/* ../LICENSE. */
/* */
/***********************************************************************/
function encode_utf8 (s) {
var v = mk_block (0, STRING_TAG);
var vi = 0;
for (var i = 0; i < s.length; i++) {
var c = s.charCodeAt (i);
if (c < 0x80) {
/* one byte (ascii) */
v.size++;
v.set (vi++, c);
} else {
if(c < 0x800) {
/* two bytes */
v.size += 2;
v.set (vi++, (c >> 0x06) | 0xC0);
v.set (vi++, (c & 0x3F) | 0x80);
} else {
/* three bytes */
v.set (vi++, (c >> 12) | 0xE0);
v.set (vi++, ((c >> 6) & 0x3F) | 0x80);
v.set (vi++, (c & 0x3F) | 0x80);
}
}
}
v.size++;
v.set (vi, 0);
return v;
}
function decode_utf8 (v) {
var s = "";
for (var i = 0;i < v.size - 1;) {
var c1 = v.get (i++);
if (c1 < 0x80) {
s += String.fromCharCode(c1);
} else {
if((c1 >= 0xC0) && (c1 < 0xE0)) {
var c2 = v.get (i++);
s += String.fromCharCode (((c1 & 0x1F) << 6) | (c2 & 0x3F));
} else {
var c2 = v.get (i++);
var c3 = v.get (i++);
s += String.fromCharCode(((c1 & 0xF) << 12) | ((c2 & 0x3F) << 6) | (c3 & 0x3F));
}
}
}
return s;
}
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