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IIDX: Fixed Base64toBuffer

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duel0213
2024-02-29 18:24:13 +09:00
parent 8a9683589b
commit bb3333152f
1 changed files with 6 additions and 7 deletions
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13
iidx@asphyxia/util.ts
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@@ -43,26 +43,25 @@ export function ClidToPlaySide(clid: number) {
export function Base64toBuffer(s: string) { export function Base64toBuffer(s: string) {
const base64list = const base64list =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
let t = "", let buffer = Buffer.alloc(0),
p = -8, p = -8,
a = 0, a = 0,
c: number, c: number;
d: number;
if (s == null) return Buffer.from([0x00]); if (_.isNil(s)) return Buffer.alloc(0);
for (let i = 0; i < s.length; i++) { for (let i = 0; i < s.length; i++) {
if ((c = base64list.indexOf(s.charAt(i))) < 0) continue; if ((c = base64list.indexOf(s.charAt(i))) < 0) continue;
if (c == 64) break;
a = (a << 6) | (c & 63); a = (a << 6) | (c & 63);
if ((p += 6) >= 0) { if ((p += 6) >= 0) {
d = (a >> p) & 255; buffer = Buffer.concat([buffer, Buffer.from([((a >> p) & 255)])]);
if (c != 64) t += String.fromCharCode(d);
a &= 63; a &= 63;
p -= 8; p -= 8;
} }
} }
return Buffer.from(t); return buffer;
} }
export function NumArrayToString(bits: number[], numArray: number[]): string { export function NumArrayToString(bits: number[], numArray: number[]): string {