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emscripten.ts
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emscripten.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
// Types and implementation inspired from https://github.com/jvilk/BrowserFS
// LICENSE: https://github.com/jvilk/BrowserFS/blob/8977a704ea469d05daf857e4818bef1f4f498326/LICENSE
// And from https://github.com/gzuidhof/starboard-notebook
// LICENSE: https://github.com/gzuidhof/starboard-notebook/blob/cd8d3fc30af4bd29cdd8f6b8c207df8138f5d5dd/LICENSE
/**
* Types for Emscripten primitives.
*
* Ideally, much more of these would be taken from `@types/emscripten`.
*/
// eslint-disable-next-line @typescript-eslint/triple-slash-reference
/// <reference path="../../../node_modules/@types/emscripten/index.d.ts" />
type EmscriptenFS = typeof FS;
export const DIR_MODE = 16895; // 040777
export const FILE_MODE = 33206; // 100666
export const SEEK_CUR = 1;
export const SEEK_END = 2;
export interface IStats {
dev: number;
ino: number;
mode: number;
nlink: number;
uid: number;
gid: number;
rdev: number;
size: number;
blksize: number;
blocks: number;
atime: Date;
mtime: Date;
ctime: Date;
timestamp?: number;
}
export interface IEmscriptenFSNode {
id: number;
name: string;
mode: number;
parent: IEmscriptenFSNode;
mount: { opts: { root: string } };
stream_ops: IEmscriptenStreamOps;
node_ops: IEmscriptenNodeOps;
timestamp: number;
}
export interface IEmscriptenStream {
node: IEmscriptenFSNode;
nfd: any;
flags: string;
position: number;
}
export interface IEmscriptenNodeOps {
getattr(node: IEmscriptenFSNode): IStats;
setattr(node: IEmscriptenFSNode, attr: IStats): void;
lookup(parent: IEmscriptenFSNode, name: string): IEmscriptenFSNode;
mknod(
parent: IEmscriptenFSNode,
name: string,
mode: number,
dev: number,
): IEmscriptenFSNode;
rename(oldNode: IEmscriptenFSNode, newDir: IEmscriptenFSNode, newName: string): void;
unlink(parent: IEmscriptenFSNode, name: string): void;
rmdir(parent: IEmscriptenFSNode, name: string): void;
readdir(node: IEmscriptenFSNode): string[];
symlink(parent: IEmscriptenFSNode, newName: string, oldPath: string): void;
readlink(node: IEmscriptenFSNode): string;
}
export interface IEmscriptenStreamOps {
open(stream: IEmscriptenStream): void;
close(stream: IEmscriptenStream): void;
read(
stream: IEmscriptenStream,
buffer: Uint8Array,
offset: number,
length: number,
position: number,
): number;
write(
stream: IEmscriptenStream,
buffer: Uint8Array,
offset: number,
length: number,
position: number,
): number;
llseek(stream: IEmscriptenStream, offset: number, whence: number): number;
}
/**
* The emscripten filesystem module API.
*/
export type FS = EmscriptenFS & {
ErrnoError: any;
createNode: (
parent: IEmscriptenFSNode | null,
name: string,
mode: number,
dev: number,
) => IEmscriptenFSNode;
};
/**
* The emscripten filesystem error codes.
*/
export type ERRNO_CODES = any;
/**
* The emscripten FS Path API.
*/
export type PATH = {
basename: (path: string) => string;
dirname: (path: string) => string;
join: (...parts: string[]) => string;
join2: (l: string, r: string) => string;
normalize: (path: string) => string;
splitPath: (filename: string) => string;
};