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30 lines
829 B
TypeScript
30 lines
829 B
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import * as path from "../path/mod.ts";
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export function charCode(s: string): number {
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return s.charCodeAt(0);
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}
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/** Create or open a temporal file at specified directory with prefix and
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* postfix
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* */
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export async function tempFile(
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dir: string,
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opts: {
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prefix?: string;
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postfix?: string;
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} = { prefix: "", postfix: "" }
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): Promise<{ file: Deno.File; filepath: string }> {
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const r = Math.floor(Math.random() * 1000000);
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const filepath = path.resolve(
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`${dir}/${opts.prefix || ""}${r}${opts.postfix || ""}`
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);
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await Deno.mkdir(path.dirname(filepath), { recursive: true });
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const file = await Deno.open(filepath, {
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create: true,
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read: true,
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write: true,
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append: true,
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});
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return { file, filepath };
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}
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