ac857af125
+ csv imports + import options + type detection + bool, number, date, text, email and json types supported
45 lines
1009 B
TypeScript
45 lines
1009 B
TypeScript
import { readCSVObjects } from "https://deno.land/x/csv@v0.8.0/reader.ts";
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import { ParserOptions, RawRow } from "../types/csv.ts";
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/**
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* Parse a file to string-based object array.
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* @param filename - Name of the .csv file (with extension)
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* @param csvOptions - Options for the parser
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* @returns
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*/
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export async function parseCsv(
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filename: string | null,
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csvOptions: ParserOptions,
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): Promise<RawRow[] | null> {
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const results: RawRow[] = [];
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try {
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const f = await Deno.open(`./input/${filename}`);
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for await (const obj of readCSVObjects(f, csvOptions)) {
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results.push(obj);
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}
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f.close();
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} catch (e) {
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console.error(`%c${e}`, "color: red");
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return null;
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}
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// No columns
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if (results.length === 0) {
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return null;
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}
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return results;
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}
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/**
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* Parses a boolean with truthy values being `'true'` and `'1'`.
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* @param value Raw string value
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* @returns
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*/
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export function parseBool(value: string): boolean {
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return ["true", "1"].includes(value);
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}
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