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// Copyright 2019 the Deno authors. All rights reserved. MIT license.
import { sendSync, sendAsync } from "./dispatch_json.ts";
import * as dispatch from "./dispatch.ts";
import { close } from "./files.ts";
export interface FsEvent {
kind: "any" | "access" | "create" | "modify" | "remove";
paths: string[];
}
class FsEvents implements AsyncIterableIterator<FsEvent> {
readonly rid: number;
constructor(paths: string[], options: { recursive: boolean }) {
const { recursive } = options;
this.rid = sendSync(dispatch.OP_FS_EVENTS_OPEN, { recursive, paths });
}
async next(): Promise<IteratorResult<FsEvent>> {
return await sendAsync(dispatch.OP_FS_EVENTS_POLL, {
rid: this.rid
});
}
async return(value?: FsEvent): Promise<IteratorResult<FsEvent>> {
close(this.rid);
return { value, done: true };
}
[Symbol.asyncIterator](): AsyncIterableIterator<FsEvent> {
return this;
}
}
export function fsEvents(
paths: string | string[],
options = { recursive: true }
): AsyncIterableIterator<FsEvent> {
return new FsEvents(Array.isArray(paths) ? paths : [paths], options);
}
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