43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const fromCharCode = String.fromCharCode;
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exports.default = (buf, start, length) => {
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let offset = start;
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const end = offset + length;
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let str = '';
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while (offset < end) {
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const octet1 = buf[offset++];
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if ((octet1 & 0x80) === 0) {
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str += fromCharCode(octet1);
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continue;
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}
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const octet2 = buf[offset++] & 0x3f;
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if ((octet1 & 0xe0) === 0xc0) {
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str += fromCharCode(((octet1 & 0x1f) << 6) | octet2);
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continue;
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}
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const octet3 = buf[offset++] & 0x3f;
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if ((octet1 & 0xf0) === 0xe0) {
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str += fromCharCode(((octet1 & 0x1f) << 12) | (octet2 << 6) | octet3);
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continue;
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}
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if ((octet1 & 0xf8) === 0xf0) {
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const octet4 = buf[offset++] & 0x3f;
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let unit = ((octet1 & 0x07) << 0x12) | (octet2 << 0x0c) | (octet3 << 0x06) | octet4;
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if (unit > 0xffff) {
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unit -= 0x10000;
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const unit0 = ((unit >>> 10) & 0x3ff) | 0xd800;
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unit = 0xdc00 | (unit & 0x3ff);
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str += fromCharCode(unit0, unit);
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}
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else {
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str += fromCharCode(unit);
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}
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}
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else {
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str += fromCharCode(octet1);
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}
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}
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return str;
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};
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//# sourceMappingURL=v10.js.map
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