ini-simple-parser/dist/index.js

A simple, fast and configurable INI parser.

/* IMPORT */
import { inferBoolean, inferNull, inferNumber, inferString, stripComments } from './utils.js';
/* MAIN */
//TODO: Maybe make this a special-case of a spec-compliant configurable TOML parser
//TODO: Maybe write this a bit more low-level, for a bit better performance, potentially
const parse = (input, options = {}) => {
    /* CONSTANTS */
    const COMMENT1 = 35; // #
    const COMMENT2 = 59; // ;
    const SECTION_START = 91; // [
    const SECTION_END = 93; // ]
    const INFER_BOOLEANS = !!options.inferBooleans;
    const INFER_NULLS = !!options.inferNulls;
    const INFER_NUMBERS = !!options.inferNumbers;
    const INFER_STRINGS = !!options.inferStrings;
    const INLINE_COMMENTS = !!options.inlineComments;
    /* PARSING */
    const results = {};
    const lines = input.split(/\r?\n|\r/g);
    let section = results;
    for (let i = 0, l = lines.length; i < l; i++) {
        const line = lines[i].trim();
        if (!line.length)
            continue; // Empty line
        const firstChar = line.charCodeAt(0);
        if (firstChar === COMMENT1 || firstChar === COMMENT2)
            continue; // Comment line
        const lastChar = line.charCodeAt(line.length - 1);
        if (firstChar === SECTION_START) { // Section start
            if (lastChar === SECTION_END) { // Section end
                const key = line.slice(1, -1);
                section = results[key] = {};
                continue;
            }
            else {
                throw new Error(`Unexpected unclosed section at line ${i + 1}`);
            }
        }
        const delimiterIndex = line.indexOf('=');
        if (delimiterIndex >= 0) { // Key-value pair
            let key = line.slice(0, delimiterIndex).trim();
            let value = line.slice(delimiterIndex + 1).trim();
            if (INLINE_COMMENTS) {
                value = stripComments(value);
            }
            if (INFER_BOOLEANS) {
                value = inferBoolean(value);
            }
            if (INFER_NULLS) {
                value = inferNull(value);
            }
            if (INFER_NUMBERS) {
                value = inferNumber(value);
            }
            if (INFER_STRINGS) {
                key = inferString(key);
                value = inferString(value);
            }
            section[`${key}`] = value;
            continue;
        }
        throw new Error(`Unexpected characters at line ${i + 1}`);
    }
    return results;
};
/* EXPORT */
export default parse;