Method strftime()

Method strftime

string(1..255) strftime(string(1..255) format, mapping(string:int) tm)

Description

Convert a timestamp mapping into a string.

This function is similar to sprintf(), but formats a single timestamp mapping.

Parameter format

Formatting string. This is similar to a sprintf_format string, but the %-escapes are different, see below.

Parameter tm

Timestamp mapping to format. See localtime() for a description of the fields.

Escaped characters:

"%%"	An escaped % character.
"%n"	A newline character. (SU)
"%t"	A tab character. (SU)

Modifiers:

"%E"	Modifier: use alternative format, see below.
"%O"	Modifier: use alternative format, see below. (SU)

Formats:

"%a"	The abbreviated weekday name according to the current locale
"%A"	The full weekday name according to the current locale.
"%b"	The abbreviated month name according to the current locale.
"%B"	The full month name according to the current locale.
"%c"	The preferred date and time representation for the current locale.
"%C"	The century number (year/100) as a 2-digit integer (range 00 to 99).
"%d"	The day of the month as a decimal number (range 01 to 31).
"%D"	Equivalent to %m/%d/%y. (for Americans only. Americans should note that in other countries %d/%m/%y is rather common. This means that in international context this format is ambiguous and should not be used.)
"%e"	Like %d, the day of the month as a decimal number, but a leading zero is replaced by a space.
"%F"	Equivalent to %Y-%m-%d (the ISO 8601 date format). (C99)
"%g"	Like %G, but without century, that is, with a 2-digit year (00-99). (TZ)
"%G"	The ISO 8601 week-based year (see NOTES) with century as a decimal number. The 4-digit year corresponding to the ISO week number (see %V). This has the same format and value as %Y, except that if the ISO week number belongs to the previous or next year, that year is used instead.
"%h"	Equivalent to %b.
"%H"	The hour as a decimal number using a 24-hour clock (range 00 to 23).
"%I"	The hour as a decimal number using a 12-hour clock (range 01 to 12).
"%j"	The day of the year as a decimal number (range 001 to 366).
"%k"	The hour as a decimal number using a 24-hour clock (range 0 to 23); single digits are prefixed by a space. See also %H.
"%l"	The hour as a decimal number using a 12-hour clock (range 1 to 12). single digits are prefixed by a space. See also %I.
"%m"	The month as a decimal number (range 01 to 12).
"%M"	The minute as a decimal number (range 00 to 59).
"%p"	Either "AM" or "PM" according to the given time value, or the corresponding strings for the current locale. Noon is treated as "PM" and midnight as "AM".
"%P"	Like %p but in lowercase: "am" or "pm" or a corresponding string for the current locale.
"%q"	Quarter number (Roxen-style).
"%r"	The time in a.m. or p.m. notation. In the POSIX locale this is equivalent to %I:%M:%S %p.
"%R"	The time in 24-hour notation (%H:%M). (SU) For a version including the seconds, see %T below.
"%s"	The number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). (TZ)
"%S"	The second as a decimal number (range 00 to 60). (The range is up to 60 to allow for occasional leap seconds.)
"%T"	The time in 24-hour notation (%H:%M:%S). (SU)
"%u"	The day of the week as a decimal, range 1 to 7, Monday being 1. See also %w. (SU)
"%U"	The week number of the current year as a decimal number, range 00 to 53, starting with the first Sunday as the first day of week 01. See also %V and %W.
"%V"	The ISO 8601 week number of the current year as a decimal number, range 01 to 53, where week 1 is the first week that has at least 4 days in the new year. See also %U and %W.
"%w"	The day of the week as a decimal, range 0 to 6, Sunday being 0. See also %u.
"%W"	The week number of year as a decimal number (range 00 to 53), with Monday as the the first day of week 1.
"%x"	Date in locale preferred format.
"%X"	Time in locale preferred format.
"%y"	Year with two digits (range 00 to 99).
"%Y"	Year with four digits (range 0000 to 9999).
"%z"	Time zone as hour offset from UTC.
"%Z"	Time zone name abbreviation, or empty if unknown.

FIXME

This function does not support format strings containing wide characters or the NUL character.

See also

ctime(), gmtime(), localtime(), mktime(), strptime(), Gettext.setlocale()