mirror of https://github.com/electron/electron
38 lines
1.2 KiB
TypeScript
38 lines
1.2 KiB
TypeScript
// A small pipe transport for talking to Electron over CDP.
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export class PipeTransport {
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private _pipeWrite: NodeJS.WritableStream | null;
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private _pendingMessage = '';
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onmessage?: (message: string) => void;
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constructor (pipeWrite: NodeJS.WritableStream, pipeRead: NodeJS.ReadableStream) {
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this._pipeWrite = pipeWrite;
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pipeRead.on('data', buffer => this._dispatch(buffer));
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}
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send (message: Object) {
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this._pipeWrite!.write(JSON.stringify(message));
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this._pipeWrite!.write('\0');
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}
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_dispatch (buffer: Buffer) {
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let end = buffer.indexOf('\0');
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if (end === -1) {
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this._pendingMessage += buffer.toString();
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return;
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}
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const message = this._pendingMessage + buffer.toString(undefined, 0, end);
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if (this.onmessage) { this.onmessage.call(null, JSON.parse(message)); }
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let start = end + 1;
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end = buffer.indexOf('\0', start);
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while (end !== -1) {
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const message = buffer.toString(undefined, start, end);
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if (this.onmessage) { this.onmessage.call(null, JSON.parse(message)); }
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start = end + 1;
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end = buffer.indexOf('\0', start);
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}
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this._pendingMessage = buffer.toString(undefined, start);
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}
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}
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