RFC Timestamp in Flash / AS3

Question

I would like to know if Flash / AS3 has a good way to convert an AS3 'Date' object to / from the timestamp rfc-850 format (as used by the HTTP date and last).

This question is very similar to this question about rfc 3339 , except that it is specific to AS3 and rfc-850.

RFC-850 is similar: Thu, 09 Oct 2008 01:09:43 GMT

Answer 1

Ok, so here are a couple of features for converting RFC-802 / Dateto Flash.

, Date , . RFC-802 Date(), , "GMT" , , , , .

, , .

( , - timezone Date?)

/**
 * Converts an RFC string to a Date object.
 */
function fromRFC802(date:String):Date {
    // Passing in an RFC802 date to the Date constructor causes flash
    // to conveniently ignore the "GMT" timezone at the end, and assumes
    // that it in the Local timezone.
    // If we additionally convert it back to GMT, then we're sweet.

    var outputDate:Date = new Date(date);
    outputDate = new Date(outputDate.time - outputDate.getTimezoneOffset()*1000*60);
    return outputDate;
}

/** 
 * Converts a Date object to an RFC802-formatted string (GMT/UTC).
 */
function toRFC802 (date:Date):String {
    // example: Thu, 09 Oct 2008 01:09:43 GMT

    // Convert to GMT

    var output:String = "";

    // Day
    switch (date.dayUTC) {
    case 0: output += "Sun"; break;
    case 1: output += "Mon"; break;
    case 2: output += "Tue"; break;
    case 3: output += "Wed"; break;
    case 4: output += "Thu"; break;
    case 5: output += "Fri"; break;
    case 6: output += "Sat"; break;
    }

    output += ", ";

    // Date
    if (date.dateUTC < 10) {
        output += "0"; // leading zero
    }
    output += date.dateUTC + " ";

    // Month
    switch(date.month) {
    case 0: output += "Jan"; break;
    case 1: output += "Feb"; break;
    case 2: output += "Mar"; break;
    case 3: output += "Apr"; break;
    case 4: output += "May"; break;
    case 5: output += "Jun"; break;
    case 6: output += "Jul"; break;
    case 7: output += "Aug"; break;
    case 8: output += "Sep"; break;
    case 9: output += "Oct"; break;
    case 10: output += "Nov"; break;
    case 11: output += "Dec"; break;
    }

    output += " ";

    // Year
    output += date.fullYearUTC + " ";

    // Hours
    if (date.hoursUTC < 10) {
        output += "0"; // leading zero
    }
    output += date.hoursUTC + ":";

    // Minutes
    if (date.minutesUTC < 10) {
        output += "0"; // leading zero
    }
    output += date.minutesUTC + ":";

    // Seconds
    if (date.seconds < 10) {
        output += "0"; // leading zero
    }
    output += date.secondsUTC + " GMT";

    return output;
}

var dateString:String = "Thu, 09 Oct 2008 01:09:43 GMT";

trace("Round trip proof:");

trace(" RFC-802: " + dateString);
trace("Date obj: " + fromRFC802(dateString));
trace(" RFC-802: " + toRFC802(fromRFC802(dateString)));
trace("Date obj: " + fromRFC802(toRFC802(fromRFC802(dateString))));
trace(" RFC-802: " + toRFC802(fromRFC802(toRFC802(fromRFC802(dateString)))));

Answer 2

as3corelib DateUtil.toRFC822() DateUtil.parseRFC822() ( ). , , .

DateUtil : http://as3corelib.googlecode.com/svn/trunk/docs/com/adobe/utils/DateUtil.html