41 lines
1.5 KiB
JavaScript
41 lines
1.5 KiB
JavaScript
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"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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const points = [];
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while (offset < end) {
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let code = buf[offset++];
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if ((code & 0x80) !== 0) {
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const octet2 = buf[offset++] & 0x3f;
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if ((code & 0xe0) === 0xc0) {
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code = ((code & 0x1f) << 6) | octet2;
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}
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else {
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const octet3 = buf[offset++] & 0x3f;
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if ((code & 0xf0) === 0xe0) {
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code = ((code & 0x1f) << 12) | (octet2 << 6) | octet3;
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}
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else {
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if ((code & 0xf8) === 0xf0) {
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const octet4 = buf[offset++] & 0x3f;
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let unit = ((code & 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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code = 0xdc00 | (unit & 0x3ff);
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points.push(unit0);
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}
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else {
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code = unit;
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}
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}
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}
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}
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}
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points.push(code);
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}
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return fromCharCode.apply(String, points);
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};
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//# sourceMappingURL=v18.js.map
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