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Annotation of 43BSDReno/lib/libc/string/strftime.3, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1989 The Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted provided
        !             5: .\" that: (1) source distributions retain this entire copyright notice and
        !             6: .\" comment, and (2) distributions including binaries display the following
        !             7: .\" acknowledgement:  ``This product includes software developed by the
        !             8: .\" University of California, Berkeley and its contributors'' in the
        !             9: .\" documentation or other materials provided with the distribution and in
        !            10: .\" all advertising materials mentioning features or use of this software.
        !            11: .\" Neither the name of the University nor the names of its contributors may
        !            12: .\" be used to endorse or promote products derived from this software without
        !            13: .\" specific prior written permission.
        !            14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            17: .\"
        !            18: .\"    @(#)strftime.3  5.6 (Berkeley) 6/23/90
        !            19: .\"
        !            20: .TH STRFTIME 3 "%Q"
        !            21: .AT 3
        !            22: .SH NAME
        !            23: strftime \- format date and time
        !            24: .SH SYNOPSIS
        !            25: .nf
        !            26: .ft B
        !            27: #include <sys/types.h>
        !            28: #include <time.h>
        !            29: #include <string.h>
        !            30: 
        !            31: size_t
        !            32: strftime(char *s, size_t maxsize, const char *format,
        !            33:        const struct tm *timeptr);
        !            34: .ft R
        !            35: .fi
        !            36: .SH DESCRIPTION
        !            37: The
        !            38: .I strftime
        !            39: function formats the information from
        !            40: .I timeptr
        !            41: into the buffer
        !            42: .I buf
        !            43: according to the string pointed to by
        !            44: .IR format .
        !            45: .PP
        !            46: The
        !            47: .I format
        !            48: string consists of zero or more conversion specifications and
        !            49: ordinary characters.
        !            50: All ordinary characters are copied directly into the buffer.
        !            51: A conversion specification consists of a percent sign (``%'')
        !            52: and one other character.
        !            53: .PP
        !            54: No more than
        !            55: .I maxsize
        !            56: characters will be placed into the array.
        !            57: If the total number of resulting characters, including the terminating
        !            58: null character, is not more than
        !            59: .IR maxsize ,
        !            60: .I strftime
        !            61: returns the number of characters in the array, not counting the
        !            62: terminating null.
        !            63: Otherwise, zero is returned.
        !            64: .PP
        !            65: Each conversion specification is replaced by the characters as
        !            66: follows which are then copied into the buffer.
        !            67: .TP
        !            68: .B %A
        !            69: is replaced by the full weekday name.
        !            70: .TP
        !            71: .B %a
        !            72: is replaced by the abbreviated weekday name, where the abbreviation
        !            73: is the first three characters.
        !            74: .TP
        !            75: .B %B
        !            76: is replaced by the full month name.
        !            77: .TP
        !            78: .B %b or %h
        !            79: is replaced by the abbreviated month name, where the abbreviation is
        !            80: the first three characters.
        !            81: .TP
        !            82: .B %C
        !            83: is equivalent to ``%a %b %e %H:%M:%S %Y'' (the format produced by
        !            84: .IR asctime (3).
        !            85: .TP
        !            86: .B %c
        !            87: is equivalent to ``%m/%d/%y''.
        !            88: .TP
        !            89: .B %D
        !            90: is replaced by the date in the format ``mm/dd/yy''.
        !            91: .TP
        !            92: .B %d
        !            93: is replaced by the day of the month as a decimal number (01-31).
        !            94: .TP
        !            95: .B %e
        !            96: is replaced by the day of month as a decimal number (1-31); single
        !            97: digits are preceded by a blank.
        !            98: .TP
        !            99: .B %H
        !           100: is replaced by the hour (24-hour clock) as a decimal number (00-23).
        !           101: .TP
        !           102: .B %I
        !           103: is replaced by the hour (12-hour clock) as a decimal number (01-12).
        !           104: .TP
        !           105: .B %j
        !           106: is replaced by the day of the year as a decimal number (001-366).
        !           107: .TP
        !           108: .B %k
        !           109: is replaced by the hour (24-hour clock) as a decimal number (0-23);
        !           110: single digits are preceded by a blank.
        !           111: .TP
        !           112: .B %l
        !           113: is replaced by the hour (12-hour clock) as a decimal number (01-12);
        !           114: single digits are preceded by a blank.
        !           115: .TP
        !           116: .B %M
        !           117: is replaced by the minute as a decimal number (00-59).
        !           118: .TP
        !           119: .B %m
        !           120: is replaced by the month as a decimal number (01-12).
        !           121: .TP
        !           122: .B %n
        !           123: is replaced by a newline.
        !           124: .TP
        !           125: .B %p
        !           126: is replaced by either ``AM'' or ``PM'' as appropriate.
        !           127: .TP
        !           128: .B %R
        !           129: is equivalent to ``%H:%M''.
        !           130: .TP
        !           131: .B %r
        !           132: is equivalent to ``%I:%M:%S %p''.
        !           133: .TP
        !           134: .B %t
        !           135: is replaced by a tab.
        !           136: .TP
        !           137: .B %S
        !           138: is replaced by the second as a decimal number (00-60).
        !           139: .TP
        !           140: .B %T or %X
        !           141: is equivalent to ``%H:%M:%S''.
        !           142: .TP
        !           143: .B %U
        !           144: is replaced by the week number of the year (Sunday as the first day of
        !           145: the week) as a decimal number (00-53).
        !           146: .TP
        !           147: .B %W
        !           148: is replaced by the week number of the year (Monday as the first day of
        !           149: the week) as a decimal number (00-53).
        !           150: .TP
        !           151: .B %w
        !           152: is replaced by the weekday (Sunday as the first day of the week)
        !           153: as a decimal number (0-6).
        !           154: .TP
        !           155: .B %x
        !           156: is equivalent to ``%m/%d/%y %H:%M:%S''.
        !           157: .TP
        !           158: .B %Y
        !           159: is replaced by the year with century as a decimal number.
        !           160: .TP
        !           161: .B %y
        !           162: is replaced by the year without century as a decimal number (00-99).
        !           163: .TP
        !           164: .B %Z
        !           165: is replaced by the time zone name.
        !           166: .TP
        !           167: .B %%
        !           168: is replaced by ``%''.
        !           169: .SH "SEE ALSO"
        !           170: date(1), ctime(3), printf(1), printf(3)
        !           171: .SH STANDARDS
        !           172: .B Strftime
        !           173: conforms to ANSI X3.159-1989 (``ANSI C'').

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