1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/**
* @license
* Copyright 2018 Google Inc.
* SPDX-License-Identifier: Apache-2.0
*/
import type {ConnectionTransport} from '../common/ConnectionTransport.js';
import {EventSubscription} from '../common/EventEmitter.js';
import {debugError} from '../common/util.js';
import {assert} from '../util/assert.js';
import {DisposableStack} from '../util/disposable.js';
/**
* @internal
*/
export class PipeTransport implements ConnectionTransport {
#pipeWrite: NodeJS.WritableStream;
#subscriptions = new DisposableStack();
#isClosed = false;
#pendingMessage = '';
onclose?: () => void;
onmessage?: (value: string) => void;
constructor(
pipeWrite: NodeJS.WritableStream,
pipeRead: NodeJS.ReadableStream
) {
this.#pipeWrite = pipeWrite;
this.#subscriptions.use(
new EventSubscription(pipeRead, 'data', (buffer: Buffer) => {
return this.#dispatch(buffer);
})
);
this.#subscriptions.use(
new EventSubscription(pipeRead, 'close', () => {
if (this.onclose) {
this.onclose.call(null);
}
})
);
this.#subscriptions.use(
new EventSubscription(pipeRead, 'error', debugError)
);
this.#subscriptions.use(
new EventSubscription(pipeWrite, 'error', debugError)
);
}
send(message: string): void {
assert(!this.#isClosed, '`PipeTransport` is closed.');
this.#pipeWrite.write(message);
this.#pipeWrite.write('\0');
}
#dispatch(buffer: Buffer): void {
assert(!this.#isClosed, '`PipeTransport` is closed.');
let end = buffer.indexOf('\0');
if (end === -1) {
this.#pendingMessage += buffer.toString();
return;
}
const message = this.#pendingMessage + buffer.toString(undefined, 0, end);
if (this.onmessage) {
this.onmessage.call(null, message);
}
let start = end + 1;
end = buffer.indexOf('\0', start);
while (end !== -1) {
if (this.onmessage) {
this.onmessage.call(null, buffer.toString(undefined, start, end));
}
start = end + 1;
end = buffer.indexOf('\0', start);
}
this.#pendingMessage = buffer.toString(undefined, start);
}
close(): void {
this.#isClosed = true;
this.#subscriptions.dispose();
}
}
|
