Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | 1x 5x 5x 5x 5x 5x 33438x 33438x 33430x 8x 3x 3x 5x 3x 3x 3x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 33438x 4178x 4178x 5x 5x | // String.fromCharCode(...units) flushing happens more often.
export default (buf: Uint8Array, start: number, length: number): string => {
let offset = start;
const end = offset + length;
const units: Array<number> = [];
let result = '';
while (offset < end) {
const byte1 = buf[offset++]!;
if ((byte1 & 0x80) === 0) {
units.push(byte1);
} else if ((byte1 & 0xe0) === 0xc0) {
const byte2 = buf[offset++]! & 0x3f;
units.push(((byte1 & 0x1f) << 6) | byte2);
} else if ((byte1 & 0xf0) === 0xe0) {
const byte2 = buf[offset++]! & 0x3f;
const byte3 = buf[offset++]! & 0x3f;
units.push(((byte1 & 0x1f) << 12) | (byte2 << 6) | byte3);
} else if ((byte1 & 0xf8) === 0xf0) {
const byte2 = buf[offset++]! & 0x3f;
const byte3 = buf[offset++]! & 0x3f;
const byte4 = buf[offset++]! & 0x3f;
let unit = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0c) | (byte3 << 0x06) | byte4;
if (unit > 0xffff) {
unit -= 0x10000;
units.push(((unit >>> 10) & 0x3ff) | 0xd800);
unit = 0xdc00 | (unit & 0x3ff);
}
units.push(unit);
} else E{
units.push(byte1);
}
if (units.length >= 8) {
result += String.fromCharCode(...units);
units.length = 0;
}
}
if (units.length > 0) result += String.fromCharCode(...units);
return result;
};
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