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import { readCSV } from "../mod.ts";import { Sha256 } from "../dev_deps.ts";
const file = await Deno.open(Deno.args[0]);const calculateHash = !!Deno.env.get("CALCULATE_HASH");const calculateRowHash = !!Deno.env.get("CALCULATE_ROW_HASH");const hash = new Sha256();let rowHash = new Sha256();let lines = 0;
const start = performance.now();
for await (  const row of readCSV(file, {    lineSeparator: "\r\n",  })) {  if (calculateRowHash) {    rowHash = new Sha256();  }  for await (const cell of row) {    if (calculateHash) {      hash.update(cell);    }    if (calculateRowHash) {      rowHash.update(cell);    }  }  if (calculateRowHash) {    console.log(lines, rowHash.hex(), row);  }  lines++;}
const diff = performance.now() - start;if (calculateHash) {  console.log(`Result hash: ${hash.hex()}`);} else {  console.log(`Read ${lines} lines for ${(diff / 1000).toFixed(3)} seconds`);}