@rareelements/lydia/lib/CalendarParser.js

RFC5545 implementation

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
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    Object.defineProperty(o, "default", { enumerable: true, value: v });
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    o["default"] = v;
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var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CalendarParser = void 0;
const fs = __importStar(require("fs"));
const readline = __importStar(require("readline"));
const Helper_1 = require("./utils/Helper");
const PropertyType_1 = require("./model/PropertyType");
class CalendarParser {
    static parse(lines) {
        let currentComponent;
        const components = [];
        const properties = [];
        const calendar = {
            components,
            properties
        };
        for (const line of lines) {
            if (Helper_1.SpecialStrings.CALENDAR_START === line || Helper_1.SpecialStrings.CALENDAR_END === line) {
                continue;
            }
            if (line.startsWith(Helper_1.SpecialStrings.BEGIN)) {
                const name = line.substr(Helper_1.SpecialStrings.BEGIN.length + 1);
                currentComponent = {
                    name,
                    properties: []
                };
                components.push(currentComponent);
            }
            else if (line.startsWith(Helper_1.SpecialStrings.END) && line !== PropertyType_1.PropertyType.X_WR_TIMEZONE) {
                currentComponent = undefined;
            }
            else {
                const property = Helper_1.Helper.parseLine(line);
                if (currentComponent)
                    currentComponent.properties.push(property);
                else
                    properties.push(property);
            }
        }
        return calendar;
    }
    static async parseContent(data) {
        const temp = data.split(/\r?\n/);
        const lines = [];
        for (const line of temp) {
            unwrap(lines)(line);
        }
        const calendar = CalendarParser.parse(lines);
        return calendar;
    }
    static async parseFile(filename) {
        return new Promise((resolve, reject) => {
            try {
                const rl = readline.createInterface({ input: fs.createReadStream(filename) });
                const lines = [];
                rl.on('line', unwrap(lines));
                rl.on('close', () => {
                    const calendar = CalendarParser.parse(lines);
                    resolve(calendar);
                });
            }
            catch (err) {
                reject(err);
            }
        });
    }
}
exports.CalendarParser = CalendarParser;
function unwrap(lines) {
    return (line) => {
        if (line.startsWith(' ') || line.startsWith('\t')) {
            line = line.substr(1);
            line = lines.pop() + line;
        }
        if (line) // ignore empty lines
            lines.push(line);
    };
}
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