mdx-m3-viewer
Version:
A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.
135 lines • 3.15 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
function hash(buffer) {
let o = 0;
let len = buffer.length;
let a = 0x9e3779b9;
let b = 0x9e3779b9;
let c = 0;
while (len >= 12) {
a += (buffer[o + 0] + (buffer[o + 1] << 8) + (buffer[o + 2] << 16) + (buffer[o + 3] << 24));
b += (buffer[o + 4] + (buffer[o + 5] << 8) + (buffer[o + 6] << 16) + (buffer[o + 7] << 24));
c += (buffer[o + 8] + (buffer[o + 9] << 8) + (buffer[o + 10] << 16) + (buffer[o + 11] << 24));
a -= b;
a -= c;
a ^= (c >> 13);
b -= c;
b -= a;
b ^= (a << 8);
c -= a;
c -= b;
c ^= (b >> 13);
a -= b;
a -= c;
a ^= (c >> 12);
b -= c;
b -= a;
b ^= (a << 16);
c -= a;
c -= b;
c ^= (b >> 5);
a -= b;
a -= c;
a ^= (c >> 3);
b -= c;
b -= a;
b ^= (a << 10);
c -= a;
c -= b;
c ^= (b >> 15);
o += 12;
len -= 12;
}
c += buffer.length;
if (len === 11) {
c += (buffer[o + 10] << 24);
}
else if (len === 10) {
c += (buffer[o + 9] << 16);
}
else if (len === 9) {
c += (buffer[o + 8] << 8);
}
else if (len === 8) {
b += (buffer[o + 7] << 24);
}
else if (len === 7) {
b += (buffer[o + 6] << 16);
}
else if (len === 6) {
b += (buffer[o + 5] << 8);
}
else if (len === 5) {
b += buffer[o + 4];
}
else if (len === 4) {
a += (buffer[o + 3] << 24);
}
else if (len === 3) {
a += (buffer[o + 2] << 16);
}
else if (len === 2) {
a += (buffer[o + 1] << 8);
}
else if (len === 1) {
a += buffer[o + 0];
}
a -= b;
a -= c;
a ^= (c >> 13);
b -= c;
b -= a;
b ^= (a << 8);
c -= a;
c -= b;
c ^= (b >> 13);
a -= b;
a -= c;
a ^= (c >> 12);
b -= c;
b -= a;
b ^= (a << 16);
c -= a;
c -= b;
c ^= (b >> 5);
a -= b;
a -= c;
a ^= (c >> 3);
b -= c;
b -= a;
b ^= (a << 10);
c -= a;
c -= b;
c ^= (b >> 15);
return c;
}
const buffer = new Uint8Array(0x400);
/**
* A hash function used by Warcraft 3's Jass virtual machine.
*
* See http://burtleburtle.net/bob/hash/doobs.html
*/
function sstrhash2(key) {
let offset = 0;
buffer.fill(0);
for (const char of key) {
const byte = char.charCodeAt(0);
if (byte < 97 || byte > 122) {
if (byte === 47) {
// slash to backwards slash.
buffer[offset] = 92;
}
else {
buffer[offset] = byte;
}
}
else {
// lower case ascii to upper case.
buffer[offset] = byte - 0x20;
}
offset += 1;
}
return hash(buffer);
}
exports.default = sstrhash2;
//# sourceMappingURL=sstrhash2.js.map