postgrejs/esm/util/get-parsers.js

Professional PostgreSQL client NodeJS

import { DataFormat } from '../constants.js';
import { decodeBinaryArray } from './decode-binaryarray.js';
import { parsePostgresArray } from './parse-array.js';
const DefaultColumnParser = (v) => v;
export function getParsers(typeMap, fields) {
    const parsers = new Array(fields.length);
    const l = fields.length;
    let f;
    let i;
    for (i = 0; i < l; i++) {
        f = fields[i];
        const dataTypeReg = typeMap.get(f.dataTypeId);
        if (dataTypeReg) {
            const isArray = !!dataTypeReg.elementsOID;
            if (f.format === DataFormat.binary) {
                const decode = dataTypeReg.parseBinary;
                if (decode) {
                    parsers[i] = !isArray
                        ? decode
                        : (v, options) => decodeBinaryArray(v, decode, options);
                }
            }
            else if (f.format === DataFormat.text) {
                const parse = dataTypeReg.parseText;
                if (parse) {
                    parsers[i] = !isArray
                        ? parse
                        : (v, options) => parsePostgresArray(v, {
                            transform: x => parse(x, options),
                            separator: dataTypeReg.arraySeparator,
                        });
                }
            }
        }
        parsers[i] = parsers[i] || DefaultColumnParser;
    }
    return parsers;
}