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curl_getdate(3) | Library Functions Manual | curl_getdate(3) |
NAME
curl_getdate - convert date string to number of secondsDESCRIPTION
curl_getdate(3) returns the number of seconds since the Epoch, January 1st 1970 00:00:00 in the UTC time zone, for the date and time that the datestring parameter specifies. The now parameter is not used, pass a NULL there.PARSING DATES AND TIMES
A "date" is a string containing several items separated by whitespace. The order of the items is immaterial. A date string may contain many flavors of items:- calendar date items
-
Can be specified several ways. Month names can only be three-letter English abbreviations, numbers can be zero-prefixed and the year may use 2 or 4 digits. Examples: 06 Nov 1994, 06-Nov-94 and Nov-94 6.
- time of the day items
- This string specifies the time on a given day. You must specify it with 6 digits with two colons: HH:MM:SS. If there is no time given in a provided date string, 00:00:00 is assumed. Example: 18:19:21.
- time zone items
- Specifies international time zone. There are a few acronyms supported, but in general you should instead use the specific relative time compared to UTC. Supported formats include: -1200, MST, +0100.
- day of the week items
- Specifies a day of the week. Days of the week may be spelled out in full (using English): 'Sunday', 'Monday', etc or they may be abbreviated to their first three letters. This is usually not info that adds anything.
- pure numbers
- If a decimal number of the form YYYYMMDD appears, then YYYY is read as the year, MM as the month number and DD as the day of the month, for the specified calendar date.
PROTOCOLS
This functionality affects all supported protocolsEXAMPLE
int main(void)
{
time_t t;
t = curl_getdate("Sun, 06 Nov 1994 08:49:37 GMT", NULL);
t = curl_getdate("Sunday, 06-Nov-94 08:49:37 GMT", NULL);
t = curl_getdate("Sun Nov 6 08:49:37 1994", NULL);
t = curl_getdate("06 Nov 1994 08:49:37 GMT", NULL);
t = curl_getdate("06-Nov-94 08:49:37 GMT", NULL);
t = curl_getdate("Nov 6 08:49:37 1994", NULL);
t = curl_getdate("06 Nov 1994 08:49:37", NULL);
t = curl_getdate("06-Nov-94 08:49:37", NULL);
t = curl_getdate("1994 Nov 6 08:49:37", NULL);
t = curl_getdate("GMT 08:49:37 06-Nov-94 Sunday", NULL);
t = curl_getdate("94 6 Nov 08:49:37", NULL);
t = curl_getdate("1994 Nov 6", NULL);
t = curl_getdate("06-Nov-94", NULL);
t = curl_getdate("Sun Nov 6 94", NULL);
t = curl_getdate("1994.Nov.6", NULL);
t = curl_getdate("Sun/Nov/6/94/GMT", NULL);
t = curl_getdate("Sun, 06 Nov 1994 08:49:37 CET", NULL);
t = curl_getdate("06 Nov 1994 08:49:37 EST", NULL);
t = curl_getdate("Sun, 12 Sep 2004 15:05:58 -0700", NULL);
t = curl_getdate("Sat, 11 Sep 2004 21:32:11 +0200", NULL);
t = curl_getdate("20040912 15:05:58 -0700", NULL);
t = curl_getdate("20040911 +0200", NULL);
}
STANDARDS
This parser handles date formats specified in RFC 822 (including the update in RFC 1123) using time zone name or time zone delta and RFC 850 (obsoleted by RFC 1036) and ANSI C's asctime() format.AVAILABILITY
Added in curl 7.1RETURN VALUE
This function returns -1 when it fails to parse the date string. Otherwise it returns the number of seconds as described.SEE ALSO
CURLOPT_TIMECONDITION(3), CURLOPT_TIMEVALUE(3), curl_easy_escape(3), curl_easy_unescape(3)2024-11-23 | libcurl |