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https://github.com/denoland/deno.git
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274 lines
11 KiB
TypeScript
274 lines
11 KiB
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { core } from "./core.ts";
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import * as dispatch from "./dispatch.ts";
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import { sendSync } from "./dispatch_json.ts";
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import { ErrorKind } from "./errors.ts";
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import { assert } from "./util.ts";
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import * as util from "./util.ts";
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import { window } from "./window.ts";
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import { OperatingSystem, Arch } from "./build.ts";
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/** Check if running in terminal.
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*
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* console.log(Deno.isTTY().stdout);
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*/
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export function isTTY(): { stdin: boolean; stdout: boolean; stderr: boolean } {
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return sendSync(dispatch.OP_IS_TTY);
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}
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/** Get the hostname.
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* Requires the `--allow-env` flag.
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*
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* console.log(Deno.hostname());
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*/
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export function hostname(): string {
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return sendSync(dispatch.OP_HOSTNAME);
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}
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/** Exit the Deno process with optional exit code. */
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export function exit(code = 0): never {
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sendSync(dispatch.OP_EXIT, { code });
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return util.unreachable();
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}
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function setEnv(key: string, value: string): void {
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sendSync(dispatch.OP_SET_ENV, { key, value });
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}
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function getEnv(key: string): string | undefined {
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return sendSync(dispatch.OP_GET_ENV, { key })[0];
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}
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/** Returns a snapshot of the environment variables at invocation. Mutating a
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* property in the object will set that variable in the environment for
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* the process. The environment object will only accept `string`s
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* as values.
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*
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* console.log(Deno.env("SHELL"));
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* const myEnv = Deno.env();
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* console.log(myEnv.SHELL);
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* myEnv.TEST_VAR = "HELLO";
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* const newEnv = Deno.env();
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* console.log(myEnv.TEST_VAR == newEnv.TEST_VAR);
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*/
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export function env(): { [index: string]: string };
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export function env(key: string): string | undefined;
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export function env(
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key?: string
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): { [index: string]: string } | string | undefined {
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if (key) {
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return getEnv(key);
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}
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const env = sendSync(dispatch.OP_ENV);
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return new Proxy(env, {
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set(obj, prop: string, value: string): boolean {
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setEnv(prop, value);
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return Reflect.set(obj, prop, value);
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}
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});
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}
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interface Start {
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cwd: string;
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pid: number;
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argv: string[];
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mainModule: string; // Absolute URL.
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debugFlag: boolean;
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depsFlag: boolean;
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typesFlag: boolean;
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versionFlag: boolean;
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denoVersion: string;
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v8Version: string;
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tsVersion: string;
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noColor: boolean;
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os: OperatingSystem;
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arch: Arch;
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}
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// This function bootstraps an environment within Deno, it is shared both by
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// the runtime and the compiler environments.
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// @internal
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export function start(preserveDenoNamespace = true, source?: string): Start {
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core.setAsyncHandler(dispatch.asyncMsgFromRust);
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const ops = core.ops();
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// TODO(bartlomieju): this is a prototype, we should come up with
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// something a bit more sophisticated
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for (const [name, opId] of Object.entries(ops)) {
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const opName = `OP_${name.toUpperCase()}`;
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// Assign op ids to actual variables
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// TODO(ry) This type casting is gross and should be fixed.
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((dispatch as unknown) as { [key: string]: number })[opName] = opId;
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}
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// First we send an empty `Start` message to let the privileged side know we
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// are ready. The response should be a `StartRes` message containing the CLI
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// args and other info.
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const startResponse = sendSync(dispatch.OP_START);
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const { pid, noColor, debugFlag } = startResponse;
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util.setLogDebug(debugFlag, source);
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// pid and noColor need to be set in the Deno module before it's set to be
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// frozen.
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util.immutableDefine(window.Deno, "pid", pid);
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util.immutableDefine(window.Deno, "noColor", noColor);
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Object.freeze(window.Deno);
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if (preserveDenoNamespace) {
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util.immutableDefine(window, "Deno", window.Deno);
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// Deno.core could ONLY be safely frozen here (not in globals.ts)
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// since shared_queue.js will modify core properties.
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Object.freeze(window.Deno.core);
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// core.sharedQueue is an object so we should also freeze it.
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Object.freeze(window.Deno.core.sharedQueue);
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} else {
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// Remove window.Deno
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delete window.Deno;
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assert(window.Deno === undefined);
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}
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return startResponse;
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}
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type DirKind =
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| "home"
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| "cache"
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| "config"
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| "executable"
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| "data"
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| "data_local"
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| "audio"
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| "desktop"
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| "document"
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| "download"
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| "font"
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| "picture"
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| "public"
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| "template"
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| "video";
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/**
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* Returns the user and platform specific directories.
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* Requires the `--allow-env` flag.
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* Returns null if there is no applicable directory or if any other error
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* occurs.
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*
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* Argument values: "home", "cache", "config", "executable", "data",
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* "data_local", "audio", "desktop", "document", "download", "font", "picture",
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* "public", "template", "video"
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*
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* "cache"
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* |Platform | Value | Example |
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* | ------- | ----------------------------------- | ---------------------------- |
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* | Linux | `$XDG_CACHE_HOME` or `$HOME`/.cache | /home/alice/.cache |
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* | macOS | `$HOME`/Library/Caches | /Users/Alice/Library/Caches |
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* | Windows | `{FOLDERID_LocalAppData}` | C:\Users\Alice\AppData\Local |
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*
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* "config"
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* |Platform | Value | Example |
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* | ------- | ------------------------------------- | -------------------------------- |
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* | Linux | `$XDG_CONFIG_HOME` or `$HOME`/.config | /home/alice/.config |
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* | macOS | `$HOME`/Library/Preferences | /Users/Alice/Library/Preferences |
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* | Windows | `{FOLDERID_RoamingAppData}` | C:\Users\Alice\AppData\Roaming |
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*
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* "executable"
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* |Platform | Value | Example |
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* | ------- | --------------------------------------------------------------- | -----------------------|
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* | Linux | `XDG_BIN_HOME` or `$XDG_DATA_HOME`/../bin or `$HOME`/.local/bin | /home/alice/.local/bin |
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* | macOS | - | - |
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* | Windows | - | - |
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*
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* "data"
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* |Platform | Value | Example |
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* | ------- | ---------------------------------------- | ---------------------------------------- |
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* | Linux | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share |
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* | macOS | `$HOME`/Library/Application Support | /Users/Alice/Library/Application Support |
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* | Windows | `{FOLDERID_RoamingAppData}` | C:\Users\Alice\AppData\Roaming |
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*
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* "data_local"
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* |Platform | Value | Example |
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* | ------- | ---------------------------------------- | ---------------------------------------- |
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* | Linux | `$XDG_DATA_HOME` or `$HOME`/.local/share | /home/alice/.local/share |
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* | macOS | `$HOME`/Library/Application Support | /Users/Alice/Library/Application Support |
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* | Windows | `{FOLDERID_LocalAppData}` | C:\Users\Alice\AppData\Local |
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*
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* "audio"
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* |Platform | Value | Example |
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* | ------- | ------------------ | -------------------- |
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* | Linux | `XDG_MUSIC_DIR` | /home/alice/Music |
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* | macOS | `$HOME`/Music | /Users/Alice/Music |
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* | Windows | `{FOLDERID_Music}` | C:\Users\Alice\Music |
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*
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* "desktop"
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* |Platform | Value | Example |
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* | ------- | -------------------- | ---------------------- |
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* | Linux | `XDG_DESKTOP_DIR` | /home/alice/Desktop |
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* | macOS | `$HOME`/Desktop | /Users/Alice/Desktop |
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* | Windows | `{FOLDERID_Desktop}` | C:\Users\Alice\Desktop |
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*
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* "document"
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* |Platform | Value | Example |
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* | ------- | ---------------------- | ------------------------ |
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* | Linux | `XDG_DOCUMENTS_DIR` | /home/alice/Documents |
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* | macOS | `$HOME`/Documents | /Users/Alice/Documents |
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* | Windows | `{FOLDERID_Documents}` | C:\Users\Alice\Documents |
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*
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* "download"
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* |Platform | Value | Example |
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* | ------- | ---------------------- | ------------------------ |
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* | Linux | `XDG_DOWNLOAD_DIR` | /home/alice/Downloads |
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* | macOS | `$HOME`/Downloads | /Users/Alice/Downloads |
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* | Windows | `{FOLDERID_Downloads}` | C:\Users\Alice\Downloads |
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*
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* "font"
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* |Platform | Value | Example |
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* | ------- | ---------------------------------------------------- | ------------------------------ |
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* | Linux | `$XDG_DATA_HOME`/fonts or `$HOME`/.local/share/fonts | /home/alice/.local/share/fonts |
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* | macOS | `$HOME/Library/Fonts` | /Users/Alice/Library/Fonts |
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* | Windows | – | – |
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*
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* "picture"
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* |Platform | Value | Example |
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* | ------- | --------------------- | ----------------------- |
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* | Linux | `XDG_PICTURES_DIR` | /home/alice/Pictures |
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* | macOS | `$HOME`/Pictures | /Users/Alice/Pictures |
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* | Windows | `{FOLDERID_Pictures}` | C:\Users\Alice\Pictures |
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*
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* "public"
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* |Platform | Value | Example |
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* | ------- | --------------------- | ------------------- |
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* | Linux | `XDG_PUBLICSHARE_DIR` | /home/alice/Public |
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* | macOS | `$HOME`/Public | /Users/Alice/Public |
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* | Windows | `{FOLDERID_Public}` | C:\Users\Public |
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*
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* "template"
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* |Platform | Value | Example |
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* | ------- | ---------------------- | ---------------------------------------------------------- |
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* | Linux | `XDG_TEMPLATES_DIR` | /home/alice/Templates |
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* | macOS | – | – |
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* | Windows | `{FOLDERID_Templates}` | C:\Users\Alice\AppData\Roaming\Microsoft\Windows\Templates |
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*
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* "video"
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* |Platform | Value | Example |
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* | ------- | ------------------- | --------------------- |
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* | Linux | `XDG_VIDEOS_DIR` | /home/alice/Videos |
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* | macOS | `$HOME`/Movies | /Users/Alice/Movies |
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* | Windows | `{FOLDERID_Videos}` | C:\Users\Alice\Videos |
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*/
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export function dir(kind: DirKind): string | null {
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try {
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return sendSync(dispatch.OP_GET_DIR, { kind });
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} catch (error) {
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if (error.kind == ErrorKind.PermissionDenied) {
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throw error;
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}
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return null;
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}
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}
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/**
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* Returns the path to the current deno executable.
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* Requires the `--allow-env` flag.
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*/
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export function execPath(): string {
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return sendSync(dispatch.OP_EXEC_PATH);
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}
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