Dorian
0d073fa89e
- Add GETTING_STARTED.md with quick start guide and development modes - Add INSTALL.sh automated installation script - Add INSTALLATION_CHECKLIST.md, INSTALLATION_SUCCESS.md, and INSTALLATION_SUMMARY.md - Add QUICK_REFERENCE.md for common commands - Add SETUP_GUIDE.md with detailed setup instructions - Update README.md with improved project overview - Add did-wallet app dependencies and node_modules
50 lines
1.5 KiB
TypeScript
50 lines
1.5 KiB
TypeScript
import errCode from 'err-code'
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import * as mh from 'multiformats/hashes/digest'
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import { CustomProgressEvent } from 'progress-events'
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import extractDataFromBlock from '../utils/extract-data-from-block.js'
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import validateOffsetAndLength from '../utils/validate-offset-and-length.js'
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import type { ExporterOptions, Resolver, ExportProgress } from '../index.js'
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const rawContent = (node: Uint8Array): ((options?: ExporterOptions) => AsyncGenerator<Uint8Array, void, undefined>) => {
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async function * contentGenerator (options: ExporterOptions = {}): AsyncGenerator<Uint8Array, void, undefined> {
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const {
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start,
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end
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} = validateOffsetAndLength(node.length, options.offset, options.length)
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const buf = extractDataFromBlock(node, 0n, start, end)
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options.onProgress?.(new CustomProgressEvent<ExportProgress>('unixfs:exporter:progress:identity', {
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bytesRead: BigInt(buf.byteLength),
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totalBytes: end - start,
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fileSize: BigInt(node.byteLength)
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}))
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yield buf
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}
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return contentGenerator
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}
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const resolve: Resolver = async (cid, name, path, toResolve, resolve, depth, blockstore, options) => {
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if (toResolve.length > 0) {
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throw errCode(new Error(`No link named ${path} found in raw node ${cid}`), 'ERR_NOT_FOUND')
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}
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const buf = mh.decode(cid.multihash.bytes)
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return {
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entry: {
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type: 'identity',
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name,
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path,
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cid,
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content: rawContent(buf.digest),
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depth,
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size: BigInt(buf.digest.length),
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node: buf.digest
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}
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}
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}
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export default resolve
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