apple2js/js/formats/block.js

/* 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;
}