dbmaster-cli/src/transforms/json2csv.transform.js

Tool for converting tables between Fifa Soccer Games

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Json2CsvTransform = void 0;
const stream_1 = require("stream");
const interfaces_1 = require("../interfaces");
const utils_1 = require("../utils");
class Json2CsvTransform extends stream_1.Transform {
    constructor(opts) {
        super(opts);
        this.line = 0;
        this.opts = opts;
    }
    _transform(chunk, encoding, callback) {
        const lines = [];
        const orderedFields = this.opts.fields.sort(utils_1.sortByOrder);
        if (this.line === 0) {
            lines.push('\ufeff' + orderedFields.map((f) => f.name).join('\t'));
        }
        const oldValue = JSON.parse(chunk.toString());
        lines.push(orderedFields
            .map((f) => {
            if (f.type === interfaces_1.Datatype.Float) {
                return String(oldValue[f.name]).replace('.', ',');
            }
            return oldValue[f.name];
        })
            .join('\t'));
        this.push(lines.join('\r\n'));
        this.line++;
        callback();
    }
    _flush(callback) {
        this.line = 0;
        callback();
    }
}
exports.Json2CsvTransform = Json2CsvTransform;