@forzalabs/remora/engines/parsing/XMLParser.js

A powerful CLI tool for seamless data translation.

"use strict";
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const fast_xml_parser_1 = require("fast-xml-parser");
const Affirm_1 = __importDefault(require("../../core/Affirm"));
const Algo_1 = __importDefault(require("../../core/Algo"));
const fs = __importStar(require("fs"));
const DEFAULT_OPTIONS = {
    attributeNamePrefix: '@_',
    ignoreAttributes: false,
    parseAttributeValue: true,
    parseTagValue: true,
    trimValues: true,
    isArray: () => {
        return false;
    }
};
class XMLParserClass {
    constructor(options) {
        this.xmlToJson = (xmlData) => {
            (0, Affirm_1.default)(xmlData, 'XML data cannot be empty');
            try {
                const parsedData = this._parser.parse(xmlData);
                if (typeof parsedData === 'object' && parsedData !== null) {
                    const rootKeys = Object.keys(parsedData);
                    if (rootKeys.length === 1) {
                        const potentialArray = parsedData[rootKeys[0]];
                        if (Array.isArray(potentialArray)) {
                            return potentialArray;
                        }
                        if (typeof potentialArray === 'object' && potentialArray !== null) {
                            const innerKeys = Object.keys(potentialArray);
                            if (innerKeys.length === 1 && Array.isArray(potentialArray[innerKeys[0]])) {
                                return potentialArray[innerKeys[0]];
                            }
                            if (Array.isArray(potentialArray)) {
                                return potentialArray;
                            }
                            const values = Object.values(potentialArray).filter(Array.isArray);
                            if (values.length === 1 && Array.isArray(values[0])) {
                                return values[0];
                            }
                            return [potentialArray];
                        }
                        return [potentialArray];
                    }
                }
                return parsedData;
            }
            catch (error) {
                console.error('Error parsing XML:', error);
                throw new Error('Failed to parse XML data.');
            }
        };
        // TO DO: improve performances for larger file using streams instead of an array of string
        this.readXmlLines = (fileUri, lineFrom, lineTo) => __awaiter(this, void 0, void 0, function* () {
            const fileContent = fs.readFileSync(fileUri, 'utf-8');
            const jsonData = XMLParser.xmlToJson(fileContent);
            // Convert JSON data to string lines. This might need adjustment based on XML structure.
            // Assuming jsonData is an array of objects, where each object is a record.
            let lines = Array.isArray(jsonData) ? jsonData.map(item => JSON.stringify(item)) : [JSON.stringify(jsonData)];
            if (Algo_1.default.hasVal(lineFrom) && Algo_1.default.hasVal(lineTo)) {
                lines = lines.slice(lineFrom, lineTo + 1);
            }
            return lines;
        });
        this._parser = new fast_xml_parser_1.XMLParser(Object.assign(Object.assign({}, DEFAULT_OPTIONS), options)); // Use 'as any' if type issues persist with library
    }
}
const XMLParser = new XMLParserClass();
exports.default = XMLParser;