@hippy/debug-server-next/dist/utils/buffer/decode.js

Debug server for hippy.

"use strict";
/*
 * Tencent is pleased to support the open source community by making
 * Hippy available.
 *
 * Copyright (C) 2017-2019 THL A29 Limited, a Tencent company.
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodeHMRData = void 0;
const enum_1 = require("@debug-server-next/@types/enum");
const log_1 = require("@debug-server-next/utils/log");
const logger = new log_1.Logger('buffer-decoder', enum_1.WinstonColor.White);
const decodeHMRData = (buf) => {
    const { offset, emitJSON } = decodeEmitJSON(0, buf);
    const emitList = decodeEmitFiles(offset, buf);
    return {
        ...emitJSON,
        emitList,
    };
};
exports.decodeHMRData = decodeHMRData;
const decodeEmitFiles = (offset, buf) => {
    const fileNum = buf.readUInt16BE(offset);
    offset += 2;
    const emitList = [];
    for (let i = 0; i < fileNum; i++) {
        const fnameLen = buf.readUInt8(offset);
        offset += 1;
        const name = buf.toString('utf8', offset, (offset += fnameLen));
        const lenOfLen = buf.readUInt8(offset);
        offset += 1;
        const fn = {
            1: 'readUInt8',
            2: 'readUInt16BE',
            4: 'readUInt32BE',
        }[lenOfLen];
        const fileLen = buf[fn](offset);
        offset += lenOfLen;
        const content = buf.slice(offset, (offset += fileLen));
        emitList.push({ name, content });
    }
    return emitList;
};
const decodeEmitJSON = (offset = 0, buf) => {
    const lenOfLen = buf.readUInt8(offset);
    offset += 1;
    const fn = {
        1: 'readUInt8',
        2: 'readUInt16BE',
        4: 'readUInt32BE',
    }[lenOfLen];
    const jsonLen = buf[fn](offset);
    offset += lenOfLen;
    const str = buf.toString('utf8', offset, offset + jsonLen);
    offset += jsonLen;
    try {
        const emitJSON = JSON.parse(str);
        return { emitJSON, offset };
    }
    catch (e) {
        logger.error('decodeEmitJSON error: %j', e.stack || e);
        throw e;
    }
};