55 lines
1.3 KiB
JavaScript
55 lines
1.3 KiB
JavaScript
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import { readFileSync, renameSync, writeFileSync } from 'node:fs';
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import { readFile } from 'node:fs/promises';
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import path from 'node:path';
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import { Writer } from 'steno';
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export class TextFile {
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#filename;
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#writer;
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constructor(filename) {
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this.#filename = filename;
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this.#writer = new Writer(filename);
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}
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async read() {
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let data;
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try {
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data = await readFile(this.#filename, 'utf-8');
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}
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catch (e) {
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if (e.code === 'ENOENT') {
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return null;
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}
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throw e;
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}
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return data;
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}
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write(str) {
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return this.#writer.write(str);
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}
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}
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export class TextFileSync {
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#tempFilename;
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#filename;
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constructor(filename) {
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this.#filename = filename;
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const f = filename.toString();
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this.#tempFilename = path.join(path.dirname(f), `.${path.basename(f)}.tmp`);
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}
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read() {
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let data;
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try {
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data = readFileSync(this.#filename, 'utf-8');
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}
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catch (e) {
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if (e.code === 'ENOENT') {
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return null;
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}
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throw e;
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}
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return data;
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}
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write(str) {
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writeFileSync(this.#tempFilename, str);
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renameSync(this.#tempFilename, this.#filename);
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}
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}
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