apple2js/js/formats/block.js
2021-01-03 15:00:40 -08:00

37 lines
1.1 KiB
JavaScript

/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
/**
* Returns a `Disk` object for a block volume with block-ordered data.
* @param {*} options the disk image and options
* @returns {import('./format_utils').Disk}
*/
export default function BlockVolume(options) {
var { rawData, readOnly, name } = options;
var disk;
var blocks = [];
blocks = [];
var offset = 0;
while (offset < rawData.byteLength) {
blocks.push(new Uint8Array(rawData.slice(offset, offset + 0x200)));
offset += 0x200;
}
disk = {
blocks,
name,
readOnly,
};
return disk;
}