devextreme/core/utils/date_serialization.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (core/utils/date_serialization.js)
 * Version: 18.1.3
 * Build date: Tue May 15 2018
 *
 * Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
var config = require("../config"),
    getLDMLFormatter = require("../../localization/ldml/date.formatter").getFormatter,
    defaultDateNames = require("../../localization/default_date_names"),
    typeUtils = require("./type"),
    isString = typeUtils.isString,
    isDate = typeUtils.isDate,
    isNumber = typeUtils.isNumeric;
var NUMBER_SERIALIZATION_FORMAT = "number",
    DATE_SERIALIZATION_FORMAT = "yyyy/MM/dd",
    DATETIME_SERIALIZATION_FORMAT = "yyyy/MM/dd HH:mm:ss";
var ISO8601_PATTERN = /^(\d{4,})(-)?(\d{2})(-)?(\d{2})(?:T(\d{2})(:)?(\d{2})?(:)?(\d{2}(?:\.(\d{1,3})\d*)?)?)?(Z|([\+\-])(\d{2})(:)?(\d{2})?)?$/;
var ISO8601_TIME_PATTERN = /^(\d{2}):(\d{2})(:(\d{2}))?$/;
var ISO8601_PATTERN_PARTS = ["", "yyyy", "", "MM", "", "dd", "THH", "", "mm", "", "ss", ".SSS"];
var MILLISECOND_LENGHT = 3;
var dateParser = function(text, skipISO8601Parsing) {
    var result;
    var parsedValue;
    if (isString(text) && !skipISO8601Parsing) {
        result = parseISO8601String(text)
    }
    if (!result) {
        parsedValue = !isDate(text) && Date.parse(text);
        result = isNumber(parsedValue) ? new Date(parsedValue) : text
    }
    return result
};
var parseISO8601String = function(text) {
    var parts = text.match(ISO8601_PATTERN);
    var timePart = function(part) {
        return +part || 0
    };
    if (!parts) {
        parts = text.match(ISO8601_TIME_PATTERN);
        if (parts) {
            return new Date(0, 0, 0, timePart(parts[1]), timePart(parts[2]), timePart(parts[4]))
        }
        return
    }
    var year = parts[1],
        month = --parts[3],
        day = parts[5],
        timeZoneHour = 0,
        timeZoneMinute = 0;
    timeZoneHour = timePart(parts[14]);
    timeZoneMinute = timePart(parts[16]);
    if ("-" === parts[13]) {
        timeZoneHour = -timeZoneHour;
        timeZoneMinute = -timeZoneMinute
    }
    var hour = timePart(parts[6]) - timeZoneHour,
        minute = timePart(parts[8]) - timeZoneMinute,
        second = timePart(parts[10]),
        parseMilliseconds = function(part) {
            part = part || "";
            return timePart(part) * Math.pow(10, MILLISECOND_LENGHT - part.length)
        },
        millisecond = parseMilliseconds(parts[11]);
    if (!!parts[12]) {
        return new Date(Date.UTC(year, month, day, hour, minute, second, millisecond))
    }
    return new Date(year, month, day, hour, minute, second, millisecond)
};
var getIso8601Format = function(text, useUtc) {
    var parts = text.match(ISO8601_PATTERN),
        result = "";
    if (!parts) {
        parts = text.match(ISO8601_TIME_PATTERN);
        if (parts) {
            return parts[3] ? "HH:mm:ss" : "HH:mm"
        }
        return
    }
    for (var i = 1; i < ISO8601_PATTERN_PARTS.length; i++) {
        if (parts[i]) {
            result += ISO8601_PATTERN_PARTS[i] || parts[i]
        }
    }
    if ("Z" === parts[12]) {
        result += "'Z'"
    }
    if (parts[14]) {
        if (parts[15]) {
            result += "xxx"
        } else {
            if (parts[16]) {
                result += "xx"
            } else {
                result += "x"
            }
        }
    }
    return result
};
var deserializeDate = function(value) {
    if ("number" === typeof value) {
        return new Date(value)
    }
    return dateParser(value, !config().forceIsoDateParsing)
};
var serializeDate = function(value, serializationFormat) {
    if (!serializationFormat) {
        return value
    }
    if (!isDate(value)) {
        return null
    }
    if (serializationFormat === NUMBER_SERIALIZATION_FORMAT) {
        return value && value.valueOf ? value.valueOf() : null
    }
    return getLDMLFormatter(serializationFormat, defaultDateNames)(value)
};
var getDateSerializationFormat = function(value) {
    if ("number" === typeof value) {
        return NUMBER_SERIALIZATION_FORMAT
    } else {
        if (isString(value)) {
            var format;
            if (config().forceIsoDateParsing) {
                format = getIso8601Format(value)
            }
            if (format) {
                return format
            } else {
                if (value.indexOf(":") >= 0) {
                    return DATETIME_SERIALIZATION_FORMAT
                } else {
                    return DATE_SERIALIZATION_FORMAT
                }
            }
        } else {
            if (value) {
                return null
            }
        }
    }
};
module.exports = {
    dateParser: dateParser,
    deserializeDate: deserializeDate,
    serializeDate: serializeDate,
    getDateSerializationFormat: getDateSerializationFormat
};