@rareelements/lydia/lib/utils/Helper.js

RFC5545 implementation

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cookComponent = exports.extractEntityName = exports.SpecialStrings = exports.Helper = exports.E_DELIMITER = exports.V_DELIMITER = exports.P_DELIMITER = void 0;
const CustomErrors_1 = require("../CustomErrors");
const CalendarUtils_1 = require("../CalendarUtils");
exports.P_DELIMITER = ';';
exports.V_DELIMITER = ':';
exports.E_DELIMITER = '=';
class Helper {
    static parseLine(line) {
        const params = [];
        let nameEndIndex = 0;
        let valueStartIndex = 0;
        let paramNameStart = 0;
        let paramNameEnd = 0;
        let currentIndex = 0;
        for (const c of line) {
            if ((c === exports.V_DELIMITER || c === exports.P_DELIMITER) && nameEndIndex === 0) {
                nameEndIndex = currentIndex;
            }
            if ((c === exports.P_DELIMITER || c === exports.V_DELIMITER) && paramNameStart > 0) {
                params.push({
                    name: line.substring(paramNameStart, paramNameEnd).toUpperCase(),
                    value: line.substring(paramNameEnd + 1, currentIndex)
                });
                paramNameStart = 0;
            }
            // tslint:disable-next-line:prefer-switch
            if (c === exports.P_DELIMITER) {
                paramNameStart = currentIndex + 1;
            }
            else if (c === exports.E_DELIMITER) {
                paramNameEnd = currentIndex;
            }
            else if (c === exports.V_DELIMITER) {
                valueStartIndex = currentIndex + 1;
                break;
            }
            currentIndex++;
        }
        const name = line.substr(0, nameEndIndex).toUpperCase();
        const value = line.substring(valueStartIndex);
        return {
            name,
            value,
            params: params.length > 0 ? params : undefined
        };
    }
    static unescapeText(value) {
        return value
            .replace(/\\[nN]/g, '\n')
            .replace(/\\\\/g, '\\')
            .replace(/\\\,/g, ',')
            .replace(/\\\;/g, ';');
    }
}
exports.Helper = Helper;
var SpecialStrings;
(function (SpecialStrings) {
    SpecialStrings["VCALENDAR"] = "VCALENDAR";
    SpecialStrings["BEGIN"] = "BEGIN";
    SpecialStrings["END"] = "END";
    SpecialStrings["VERSION"] = "VERSION";
    SpecialStrings["PROVIDER"] = "PROVIDER";
    SpecialStrings["CALENDAR_START"] = "BEGIN:VCALENDAR";
    SpecialStrings["CALENDAR_END"] = "END:VCALENDAR";
})(SpecialStrings = exports.SpecialStrings || (exports.SpecialStrings = {}));
function extractEntityName(line) {
    if (!line)
        throw new CustomErrors_1.ValidationError('Empty line. Entity name cannot be extracted ');
    let index = 0;
    for (const c of line) {
        if (c === ':' || c === ';') {
            break;
        }
        index++;
    }
    if (line.length === index)
        throw new CustomErrors_1.ValidationError('Missing delimiter. Cannot extract entity name ' + line);
    const name = line.substr(0, index).toUpperCase();
    if (name.trim() !== name)
        throw new CustomErrors_1.ValidationError('Entity name must not contain spaces: ' + name);
    return name;
}
exports.extractEntityName = extractEntityName;
function cookComponent(rawComponent, defaultTZ) {
    return CalendarUtils_1.CalendarUtils.enrichComponent(rawComponent, defaultTZ);
}
exports.cookComponent = cookComponent;
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