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49 lines
1.2 KiB
49 lines
1.2 KiB
19 years ago
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function _to_utf8(s) {
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var c, d = "";
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for (var i = 0; i < s.length; i++) {
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c = s.charCodeAt(i);
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if (c <= 0x7f) {
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d += s.charAt(i);
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} else if (c >= 0x80 && c <= 0x7ff) {
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d += String.fromCharCode(((c >> 6) & 0x1f) | 0xc0);
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d += String.fromCharCode((c & 0x3f) | 0x80);
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} else {
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d += String.fromCharCode((c >> 12) | 0xe0);
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d += String.fromCharCode(((c >> 6) & 0x3f) | 0x80);
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d += String.fromCharCode((c & 0x3f) | 0x80);
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}
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}
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return d;
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}
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function _from_utf8(s) {
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var c, d = "", flag = 0, tmp;
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for (var i = 0; i < s.length; i++) {
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c = s.charCodeAt(i);
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if (flag == 0) {
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if ((c & 0xe0) == 0xe0) {
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flag = 2;
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tmp = (c & 0x0f) << 12;
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} else if ((c & 0xc0) == 0xc0) {
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flag = 1;
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tmp = (c & 0x1f) << 6;
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} else if ((c & 0x80) == 0) {
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d += s.charAt(i);
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} else {
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flag = 0;
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}
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} else if (flag == 1) {
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flag = 0;
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d += String.fromCharCode(tmp | (c & 0x3f));
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} else if (flag == 2) {
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flag = 3;
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tmp |= (c & 0x3f) << 6;
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} else if (flag == 3) {
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flag = 0;
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d += String.fromCharCode(tmp | (c & 0x3f));
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} else {
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flag = 0;
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}
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}
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return d;
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}
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