Created
October 1, 2022 17:12
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| import { | |
| iterateReader, | |
| readableStreamFromIterable, | |
| } from "https://deno.land/std@0.158.0/streams/mod.ts"; | |
| import { createHash } from "https://deno.land/std@0.158.0/hash/mod.ts"; | |
| const path = "data.txt"; | |
| function toHex(digest: ArrayBuffer) { | |
| return [...new Uint8Array(digest)].map(x => x.toString(16).padStart(2, '0')).join('') | |
| } | |
| async function main() { | |
| Deno.writeTextFileSync(path, "abcdefghi\n".repeat(100000)); | |
| let hash = createHash("md5") | |
| let iter: any; | |
| iter = iterateReader(await Deno.open(path)); | |
| for await (const i of iter) { | |
| hash.update(i); | |
| } | |
| console.log("digest 1", toHex(hash.digest())); | |
| hash = createHash("md5") | |
| iter = readableStreamFromIterable(iterateReader(await Deno.open(path))); | |
| for await (const i of iter) { | |
| hash.update(i); | |
| } | |
| console.log("digest 2", toHex(hash.digest())); | |
| let bytes: any; | |
| bytes = await new Response(readableStreamFromIterable(iterateReader(await Deno.open(path)))).arrayBuffer(); | |
| hash = createHash("md5") | |
| hash.update(bytes); | |
| console.log("digest 3", toHex(hash.digest())); | |
| bytes = await new Response((await Deno.open(path)).readable).arrayBuffer(); | |
| hash = createHash("md5") | |
| hash.update(bytes); | |
| console.log("digest 4", toHex(hash.digest())); | |
| } | |
| await main(); |
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