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77 lines
2.4 KiB
TypeScript
77 lines
2.4 KiB
TypeScript
// Copyright 2018 the Deno authors. All rights reserved. MIT license.
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import * as fbs from "gen/msg_generated";
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import { flatbuffers } from "flatbuffers";
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import * as dispatch from "./dispatch";
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import { assert } from "./util";
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import { FileInfo, FileInfoImpl } from "./fileinfo";
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/**
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* Queries the file system for information on the path provided.
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* If the given path is a symlink information about the symlink will
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* be returned.
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*
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* import { lstat } from "deno";
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* const fileInfo = await lstat("hello.txt");
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* assert(fileInfo.isFile());
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*/
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export async function lstat(filename: string): Promise<FileInfo> {
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return res(await dispatch.sendAsync(...req(filename, true)));
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}
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/**
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* Queries the file system for information on the path provided synchronously.
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* If the given path is a symlink information about the symlink will
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* be returned.
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*
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* import { lstatSync } from "deno";
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* const fileInfo = lstatSync("hello.txt");
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* assert(fileInfo.isFile());
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*/
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export function lstatSync(filename: string): FileInfo {
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return res(dispatch.sendSync(...req(filename, true)));
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}
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/**
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* Queries the file system for information on the path provided.
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* `stat` Will always follow symlinks.
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*
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* import { stat } from "deno";
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* const fileInfo = await stat("hello.txt");
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* assert(fileInfo.isFile());
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*/
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export async function stat(filename: string): Promise<FileInfo> {
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return res(await dispatch.sendAsync(...req(filename, false)));
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}
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/**
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* Queries the file system for information on the path provided synchronously.
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* `statSync` Will always follow symlinks.
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*
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* import { statSync } from "deno";
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* const fileInfo = statSync("hello.txt");
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* assert(fileInfo.isFile());
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*/
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export function statSync(filename: string): FileInfo {
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return res(dispatch.sendSync(...req(filename, false)));
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}
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function req(
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filename: string,
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lstat: boolean
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): [flatbuffers.Builder, fbs.Any, flatbuffers.Offset] {
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const builder = new flatbuffers.Builder();
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const filename_ = builder.createString(filename);
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fbs.Stat.startStat(builder);
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fbs.Stat.addFilename(builder, filename_);
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fbs.Stat.addLstat(builder, lstat);
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const msg = fbs.Stat.endStat(builder);
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return [builder, fbs.Any.Stat, msg];
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}
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function res(baseRes: null | fbs.Base): FileInfo {
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assert(baseRes != null);
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assert(fbs.Any.StatRes === baseRes!.msgType());
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const res = new fbs.StatRes();
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assert(baseRes!.msg(res) != null);
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return new FileInfoImpl(res);
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}
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