debug-server-next
Version:
Dev server for hippy-core.
72 lines (71 loc) • 2.36 kB
JavaScript
// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable rulesdir/no_underscored_properties */
import * as Common from '../common/common.js';
import { RemoteObject } from './RemoteObject.js';
import { Capability } from './Target.js';
import { SDKModel } from './SDKModel.js';
export class IOModel extends SDKModel {
constructor(target) {
super(target);
}
/**
* @throws {!Error}
*/
async read(handle, size, offset) {
const result = await this.target().ioAgent().invoke_read({ handle, offset, size });
if (result.getError()) {
throw new Error(result.getError());
}
if (result.eof) {
return null;
}
if (result.base64Encoded) {
return Common.Base64.decode(result.data);
}
return result.data;
}
async close(handle) {
const result = await this.target().ioAgent().invoke_close({ handle });
if (result.getError()) {
console.error('Could not close stream.');
}
}
/**
* @throws {!Error}
*/
async resolveBlob(objectOrObjectId) {
const objectId = objectOrObjectId instanceof RemoteObject ? objectOrObjectId.objectId : objectOrObjectId;
if (!objectId) {
throw new Error('Remote object has undefined objectId');
}
const result = await this.target().ioAgent().invoke_resolveBlob({ objectId });
if (result.getError()) {
throw new Error(result.getError());
}
return `blob:${result.uuid}`;
}
/**
* @throws {!Error}
*/
async readToString(handle) {
const strings = [];
const decoder = new TextDecoder();
for (;;) {
const data = await this.read(handle, 1024 * 1024);
if (data === null) {
strings.push(decoder.decode());
break;
}
if (data instanceof ArrayBuffer) {
strings.push(decoder.decode(data, { stream: true }));
}
else {
strings.push(data);
}
}
return strings.join('');
}
}
SDKModel.register(IOModel, { capabilities: Capability.IO, autostart: true });