100 lines
3.0 KiB
Groff
100 lines
3.0 KiB
Groff
.\"
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.\" Copyright (c) 1994, 1995 Joerg Wunsch
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Joerg Wunsch
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.\" 4. The name of the developer may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.\" $Id: cftime.3,v 1.3 1997/02/22 15:05:51 peter Exp $
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.\"
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.Dd June 15, 1993
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.Os
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.Dt CFTIME 3
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.Sh NAME
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.Nm cftime
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.Nm ascftime
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.Nd convert date and time to string
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.Sh SYNOPSIS
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.Fd #include <time.h>
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.Ft int
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.Fn cftime "char *s" "char *format" "const time_t *clock"
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.Ft int
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.Fn ascftime "char *s" "const char *format" "const struct tm *tmptr"
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.Sh DESCRIPTION
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.Bf -symbolic
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The cftime and ascftime functions are made obsolete by strftime(3).
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.br
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They are available from the compatibility library, libcompat.
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.Ef
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.Pp
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Use of the functions
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.Nm cftime
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and
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.Nm ascftime
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is strongly deprecated, since there is no way to check for a buffer
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overflow condition. Use
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.Xr strftime 3
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instead.
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.Nm Ascftime
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is almost identical with
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.Xr strftime 3 ,
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with the only exception there's no parameter to tell about the
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maximal buffer length, and the
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.Fa format
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parameter defaults to
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.Dq %C
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if a
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.Em NULL
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pointer is given.
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.Nm Cftime
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does the same job, but it first invokes
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.Xr localtime 3
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in order to convert the given
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.Fa clock ,
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then also performs the conversions as requested by the
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.Fa format
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argument.
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.Sh RETURN VALUES
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The
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.Nm cftime
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and
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.Nm ascftime
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functions return the number of characters written to the output
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buffer
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.Fa s ,
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not counting the trailing null character.
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.Sh SEE ALSO
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.Xr localtime 3 ,
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.Xr strftime 3 .
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