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 1x 9x 9x 9x 9x 33444x 33444x 33434x 33434x 10x 10x 3x 3x 7x 7x 3x 3x 4x 4x 4x 4x 4x 4x 4x 4x 9x | const fromCharCode = String.fromCharCode;
export default (buf: Uint8Array, start: number, length: number): string => {
let offset = start;
const end = offset + length;
let str = '';
while (offset < end) {
const octet1 = buf[offset++]!;
if ((octet1 & 0x80) === 0) {
str += fromCharCode(octet1);
continue;
}
const octet2 = buf[offset++]! & 0x3f;
if ((octet1 & 0xe0) === 0xc0) {
str += fromCharCode(((octet1 & 0x1f) << 6) | octet2);
continue;
}
const octet3 = buf[offset++]! & 0x3f;
if ((octet1 & 0xf0) === 0xe0) {
str += fromCharCode(((octet1 & 0x1f) << 12) | (octet2 << 6) | octet3);
continue;
}
if ((octet1 & 0xf8) === 0xf0) {
const octet4 = buf[offset++]! & 0x3f;
let unit = ((octet1 & 0x07) << 0x12) | (octet2 << 0x0c) | (octet3 << 0x06) | octet4;
if (unit > 0xffff) {
unit -= 0x10000;
const unit0 = ((unit >>> 10) & 0x3ff) | 0xd800;
unit = 0xdc00 | (unit & 0x3ff);
str += fromCharCode(unit0, unit);
} else E{
str += fromCharCode(unit);
}
} else E{
str += fromCharCode(octet1);
}
}
return str;
};
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