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denoland-deno/ext/node/polyfills/_fs/_fs_copy.ts
Bartek Iwańczuk b40086fd7d
refactor(core): include_js_files! 'dir' option doesn't change specifiers (#18019)
This commit changes "include_js_files!" macro from "deno_core"
in a way that "dir" option doesn't cause specifiers to be rewritten 
to include it.

Example:
```
include_js_files! {
  dir "js",
  "hello.js",
}
```

The above definition required embedders to use:
`import ... from "internal:<ext_name>/js/hello.js"`. 
But with this change, the "js" directory in which the files are stored
is an implementation detail, which for embedders results in: 
`import ... from "internal:<ext_name>/hello.js"`.

The directory the files are stored in, is an implementation detail and 
in some cases might result in a significant size difference for the 
snapshot. As an example, in "deno_node" extension, we store the 
source code in "polyfills" directory; which resulted in each specifier 
to look like "internal:deno_node/polyfills/<module_name>", but with 
this change it's "internal:deno_node/<module_name>". 

Given that "deno_node" has over 100 files, many of them having 
several import specifiers to the same extension, this change removes
10 characters from each import specifier.
2023-03-05 02:31:38 +00:00

88 lines
2.6 KiB
TypeScript

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import type { CallbackWithError } from "internal:deno_node/_fs/_fs_common.ts";
import { makeCallback } from "internal:deno_node/_fs/_fs_common.ts";
import { Buffer } from "internal:deno_node/buffer.ts";
import {
getValidatedPath,
getValidMode,
} from "internal:deno_node/internal/fs/utils.mjs";
import { fs } from "internal:deno_node/internal_binding/constants.ts";
import { codeMap } from "internal:deno_node/internal_binding/uv.ts";
import { promisify } from "internal:deno_node/internal/util.mjs";
export function copyFile(
src: string | Buffer | URL,
dest: string | Buffer | URL,
callback: CallbackWithError,
): void;
export function copyFile(
src: string | Buffer | URL,
dest: string | Buffer | URL,
mode: number,
callback: CallbackWithError,
): void;
export function copyFile(
src: string | Buffer | URL,
dest: string | Buffer | URL,
mode: number | CallbackWithError,
callback?: CallbackWithError,
) {
if (typeof mode === "function") {
callback = mode;
mode = 0;
}
const srcStr = getValidatedPath(src, "src").toString();
const destStr = getValidatedPath(dest, "dest").toString();
const modeNum = getValidMode(mode, "copyFile");
const cb = makeCallback(callback);
if ((modeNum & fs.COPYFILE_EXCL) === fs.COPYFILE_EXCL) {
Deno.lstat(destStr).then(() => {
// deno-lint-ignore no-explicit-any
const e: any = new Error(
`EEXIST: file already exists, copyfile '${srcStr}' -> '${destStr}'`,
);
e.syscall = "copyfile";
e.errno = codeMap.get("EEXIST");
e.code = "EEXIST";
cb(e);
}, (e) => {
if (e instanceof Deno.errors.NotFound) {
Deno.copyFile(srcStr, destStr).then(() => cb(null), cb);
}
cb(e);
});
} else {
Deno.copyFile(srcStr, destStr).then(() => cb(null), cb);
}
}
export const copyFilePromise = promisify(copyFile) as (
src: string | Buffer | URL,
dest: string | Buffer | URL,
mode?: number,
) => Promise<void>;
export function copyFileSync(
src: string | Buffer | URL,
dest: string | Buffer | URL,
mode?: number,
) {
const srcStr = getValidatedPath(src, "src").toString();
const destStr = getValidatedPath(dest, "dest").toString();
const modeNum = getValidMode(mode, "copyFile");
if ((modeNum & fs.COPYFILE_EXCL) === fs.COPYFILE_EXCL) {
try {
Deno.lstatSync(destStr);
throw new Error(`A file exists at the destination: ${destStr}`);
} catch (e) {
if (e instanceof Deno.errors.NotFound) {
Deno.copyFileSync(srcStr, destStr);
}
throw e;
}
} else {
Deno.copyFileSync(srcStr, destStr);
}
}