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https://github.com/whscullin/apple2js.git
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ce3631f3a2
* Refactor disk handling to allow disk processing to happen in a worker * Type cleanup * Convert format handlers to TypeScript * Convert CFFA to TypeScript
41 lines
1.2 KiB
TypeScript
41 lines
1.2 KiB
TypeScript
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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* implied warranty.
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*/
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import { DiskOptions, BlockDisk, ENCODING_BLOCK } from './types';
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/**
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* Returns a `Disk` object for a block volume with block-ordered data.
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* @param options the disk image and options
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*/
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export default function createBlockDisk(options: DiskOptions): BlockDisk {
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const { rawData, readOnly, name } = options;
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if (!rawData) {
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throw new Error('Requires rawData');
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}
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const blocks = [];
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let offset = 0;
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while (offset < rawData.byteLength) {
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blocks.push(new Uint8Array(rawData.slice(offset, offset + 0x200)));
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offset += 0x200;
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}
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const disk: BlockDisk = {
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encoding: ENCODING_BLOCK,
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blocks,
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name,
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readOnly,
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};
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return disk;
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}
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