@mrhiden/cstruct/lib/read-write-base.js

For packing and unpacking bytes (C like structures) in/from Buffer based on Object/Array type for parsing.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReadWriteBase = void 0;
const types_1 = require("./types");
class ReadWriteBase {
    constructor() {
        this.dynamicTypeLengthRegex = /^(?<dynamicType>\w+)\.(?<dynamicLength>\w+)$/;
        this.staticTypeLengthRegex = /^(?<staticType>\w+)(?<staticLength>\d+)$/;
        this.stringTypes = ['s', 'string'];
        this.wstringTypes = ['ws', 'wstring'];
        this.bufferTypes = ['buf', 'buffer'];
        this.jsonTypes = ['j', 'json', 'any'];
    }
    getDynamicTypeLengthGroupsMatch(key) {
        return key.match(this.dynamicTypeLengthRegex)?.groups;
    }
    getStaticTypeLengthGroupsMatch(key) {
        return key.match(this.staticTypeLengthRegex)?.groups;
    }
    getSpecialType(modelType) {
        if (this.stringTypes.includes(modelType)) {
            return types_1.SpecialType.String;
        }
        if (this.wstringTypes.includes(modelType)) {
            return types_1.SpecialType.WString;
        }
        if (this.bufferTypes.includes(modelType)) {
            return types_1.SpecialType.Buffer;
        }
        if (this.jsonTypes.includes(modelType)) {
            return types_1.SpecialType.Json;
        }
    }
    getStaticSize(size) {
        const value = +size;
        return {
            isStatic: !Number.isNaN(value),
            staticSize: value
        };
    }
    extractTypeAndSize(modelType, dynamicLength) {
        const specialType = this.getSpecialType(modelType);
        const { isStatic, staticSize } = this.getStaticSize(dynamicLength);
        return { specialType, isStatic, staticSize };
    }
}
exports.ReadWriteBase = ReadWriteBase;