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Ysopwnable
6ce3288f3b
Stream large CLI JSON files through a strict UTF-8 decoder and standard JSON parser using the same admitted regular-file handle. Preserve native parsing for small inputs, typed malformed-input/resource/access-denied errors, cancellation, and complete Evidence. Verified with focused public CLI regressions, a 768 MB whitespace-padded valid request, and the Windows native decoder boundary. Individual strings and the assembled object graph remain subject to native runtime limits. All 27 final-head checks passed. Refs #1331
30 lines
970 B
TypeScript
30 lines
970 B
TypeScript
import type { Stats } from "node:fs";
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import type { FileHandle } from "node:fs/promises";
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import { openRegularFile } from "../filesystem/RegularFile.js";
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/** Admit one regular-file handle, retain it through the consumer, and always close it. */
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export const withRegularFile = async <Value>(
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path: string,
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read: (handle: FileHandle, stats: Stats) => Promise<Value>,
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signal?: AbortSignal,
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): Promise<Value> => {
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const handle = await openRegularFile(path, { symlinks: "follow", signal });
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try {
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const stats = await handle.stat();
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signal?.throwIfAborted();
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const value = await read(handle, stats);
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signal?.throwIfAborted();
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return value;
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} finally {
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await handle.close();
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}
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};
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/** Admit a regular file without waiting for a pipe, then read its verified handle. */
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export const readRegularFile = (
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path: string,
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signal?: AbortSignal,
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): Promise<Buffer> =>
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withRegularFile(path, (handle) => handle.readFile({ signal }), signal);
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