You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
658 B
28 lines
658 B
import { bytesMatch, toUint8 } from './byte-helpers';
|
|
var SYNC_WORD = toUint8([0x4f, 0x67, 0x67, 0x53]);
|
|
export var getPages = function getPages(bytes, start, end) {
|
|
if (end === void 0) {
|
|
end = Infinity;
|
|
}
|
|
|
|
bytes = toUint8(bytes);
|
|
var pages = [];
|
|
var i = 0;
|
|
|
|
while (i < bytes.length && pages.length < end) {
|
|
// we are unsynced,
|
|
// find the next syncword
|
|
if (!bytesMatch(bytes, SYNC_WORD, {
|
|
offset: i
|
|
})) {
|
|
i++;
|
|
continue;
|
|
}
|
|
|
|
var segmentLength = bytes[i + 27];
|
|
pages.push(bytes.subarray(i, i + 28 + segmentLength));
|
|
i += pages[pages.length - 1].length;
|
|
}
|
|
|
|
return pages.slice(start, end);
|
|
}; |