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2964 need POSIX 2008 locale object support
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Gordon Ross <gordon.ross@nexenta.com>
Approved by: TBD
@@ -1,6 +1,7 @@
'\" te
+.\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
.\" Copyright (c) 2014 Gary Mills
.\" Copyright (c) 2008, Sun Microsystems, Inc. All Rights Reserved.
.\" Copyright 1989 AT&T
.\" Portions Copyright (c) 1992, X/Open Company Limited. All Rights Reserved.
.\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
@@ -8,56 +9,61 @@
.\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
.\" This notice shall appear on any product containing this material.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
-.TH STRFTIME 3C "Jan 3, 2014"
+.TH STRFTIME 3C "Jun 24, 2014"
.SH NAME
-strftime, cftime, ascftime \- convert date and time to string
+strftime, strftime_l cftime, ascftime \- convert date and time to string
.SH SYNOPSIS
.LP
.nf
#include <time.h>
\fBsize_t\fR \fBstrftime\fR(\fBchar *restrict\fR \fIs\fR, \fBsize_t\fR \fImaxsize\fR,
\fBconst char *restrict\fR \fIformat\fR,
\fBconst struct tm *restrict\fR \fItimeptr\fR);
.fi
-
.LP
.nf
+\fBsize_t\fR \fBstrftime_l\fR(\fBchar *restrict\fR \fIs\fR, \fBsize_t\fR \fImaxsize\fR,
+ \fBconst char *restrict\fR \fIformat\fR,
+ \fBconst struct tm *restrict\fR \fItimeptr\fR, \fBlocale_t\fR \fIloc\fR);
+.fi
+.LP
+.nf
\fBint\fR \fBcftime\fR(\fBchar *\fR\fIs\fR, \fBchar *\fR\fIformat\fR, \fBconst time_t *\fR\fIclock\fR);
.fi
-
.LP
.nf
\fBint\fR \fBascftime\fR(\fBchar *\fR\fIs\fR, \fBconst char *\fR\fIformat\fR,
\fBconst struct tm *\fR\fItimeptr\fR);
.fi
.SH DESCRIPTION
.sp
.LP
-The \fBstrftime()\fR, \fBascftime()\fR, and \fBcftime()\fR functions place
+The \fBstrftime()\fR, \fBstrftime_l()\fR, \fBascftime()\fR, and \fBcftime()\fR
+functions place
bytes into the array pointed to by \fIs\fR as controlled by the string pointed
to by \fIformat\fR. The \fIformat\fR string consists of zero or more conversion
specifications and ordinary characters. A conversion specification consists of
a '\fB%\fR' (percent) character and one or two terminating conversion
characters that determine the conversion specification's behavior. All
ordinary characters (including the terminating null byte) are copied unchanged
into the array pointed to by \fIs\fR. If copying takes place between objects
that overlap, the behavior is undefined. For \fBstrftime()\fR, no more than
-\fImaxsize\fR bytes are placed into the array.
-.sp
+\fImaxsize\fR bytes are placed into the array. The \fBstrftime_l()\fR function
+behaves identically to \fBstrftime()\fR function, but instead of operating in
+the current locale, it operates in the locale specified by \fIloc\fR.
.LP
If \fIformat\fR is \fB(char *)0\fR, then the locale's default format is used.
For \fBstrftime()\fR the default format is the same as \fB%c\fR; for
\fBcftime()\fR and \fBascftime()\fR the default format is the same as \fB%+\fR.
\fBcftime()\fR and \fBascftime()\fR first try to use the value of the
environment variable \fBCFTIME\fR, and if that is undefined or empty, the
default format is used.
-.sp
.LP
Each conversion specification is replaced by appropriate characters as
described in the following list. The appropriate characters are determined by
the \fBLC_TIME\fR category of the program's locale and by the values contained
in the structure pointed to by \fItimeptr\fR for \fBstrftime()\fR and
@@ -463,25 +469,22 @@
.ad
.RS 6n
Locale's date and time representation as produced by \fBdate\fR(1).
.RE
-.sp
.LP
If a conversion specification does not correspond to any of the above or to any
of the modified conversion specifications listed below, the behavior is
undefined and \fB0\fR is returned.
-.sp
.LP
The difference between \fB%U\fR and \fB%W\fR (and also between modified
conversion specifications \fB%OU\fR and \fB%OW\fR) lies in which day is counted
as the first of the week. Week number 1 is the first week in January starting
with a Sunday for \fB%U\fR or a Monday for \fB%W\fR. Week number 0 contains
those days before the first Sunday or Monday in January for \fB%U\fR and
\fB%W\fR, respectively.
.SS "Modified Conversion Specifications"
-.sp
.LP
Some conversion specifications can be modified by the \fBE\fR and \fBO\fR
modifiers to indicate that an alternate format or specification should be used
rather than the one normally used by the unmodified conversion specification.
If the alternate format or specification does not exist in the current locale,
@@ -679,108 +682,89 @@
Year (offset from \fB%C\fR) in the locale's alternate representation and using
the locale's alternate numeric symbols.
.RE
.SS "Selecting the Output Language"
-.sp
.LP
-By default, the output of \fBstrftime()\fR, \fBcftime()\fR, and
-\fBascftime()\fR appear in U.S. English. The user can request that the output
-of \fBstrftime()\fR, \fBcftime()\fR, or \fBascftime()\fR be in a specific
-language by setting the \fBLC_TIME\fR category using \fBsetlocale()\fR.
+These routines produce output that is formatted according to the \fBLC_TIME\fR
+locale category. They use either the current locale, or in the case of
+\fBstrftime_l()\fR, the locale supplied by \fIloc\fR.
.SS "Time Zone"
-.sp
.LP
Local time zone information is used as though \fBtzset\fR(3C) were called.
.SH RETURN VALUES
-.sp
.LP
-The \fBstrftime()\fR, \fBcftime()\fR, and \fBascftime()\fR functions return the
+These functions return the
number of characters placed into the array pointed to by \fIs\fR, not including
the terminating null character. If the total number of resulting characters
including the terminating null character is more than \fImaxsize\fR,
\fBstrftime()\fR returns \fB0\fR and the contents of the array are
indeterminate.
.SH EXAMPLES
.LP
\fBExample 1 \fRAn example of the \fBstrftime()\fR function.
-.sp
.LP
The following example illustrates the use of \fBstrftime()\fR for the
\fBPOSIX\fR locale. It shows what the string in \fIstr\fR would look like if
the structure pointed to by \fItmptr\fR contains the values corresponding to
Thursday, August 28, 1986 at 12:44:36.
-
-.sp
-.in +2
.nf
-\fBstrftime (str, strsize, "%A %b %d %j", tmptr)\fR
+.IP
+\fBstrftime\fR(\fIstr\fR, \fIstrsize\fR, "%A %b %d %j", \fItmptr\fR);
.fi
-.in -2
-
-.sp
.LP
This results in \fIstr\fR containing "Thursday Aug 28 240".
-
.SH ATTRIBUTES
-.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
-.sp
-
-.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE ATTRIBUTE VALUE
_
CSI Enabled
_
-Interface Stability Committed
+Interface Stability See below.
_
MT-Level MT-Safe
_
Standard See below.
.TE
-.sp
.LP
-For \fBstrftime()\fR, see \fBstandards\fR(5).
+The \fBstrftime()\fR and \fBstrftime_l()\fR functions are Standard.
+\fBcftime()\fR and \fBascftime()\fR functions are Committed.
+.LP
+For \fBstrftime()\fR and \fBstrftime_l()\fR, see \fBstandards\fR(5).
.SH SEE ALSO
-.sp
.LP
-\fBdate\fR(1), \fBctime\fR(3C), \fBmktime\fR(3C), \fBsetlocale\fR(3C),
-\fBstrptime\fR(3C), \fBtzset\fR(3C), \fBTIMEZONE\fR(4), \fBzoneinfo\fR(4),
+\fBdate\fR(1), \fBctime\fR(3C), \fBmktime\fR(3C),
+\fBnewlocale\fR(3C), \fBsetlocale\fR(3C), \fBstrptime\fR(3C), \fBtzset\fR(3C),
+\fBuselocale\fR(3C), \fBTIMEZONE\fR(4), \fBzoneinfo\fR(4),
\fBattributes\fR(5), \fBenviron\fR(5), \fBstandards\fR(5)
.SH NOTES
-.sp
.LP
The conversion specification for \fB%V\fR was changed in the Solaris 7 release.
This change was based on the public review draft of the ISO C9x standard at
that time. Previously, the specification stated that if the week containing 1
January had fewer than four days in the new year, it became week 53 of the
previous year. The ISO C9x standard committee subsequently recognized that that
specification had been incorrect.
-.sp
.LP
The conversion specifications for \fB%g\fR, \fB%G\fR, \fB%Eg\fR, \fB%EG\fR, and
\fB%Og\fR were added in the Solaris 7 release. This change was based on the
-public review draft of the ISO C9x standard at that time. These specifications
-are evolving. If the ISO C9x standard is finalized with a different
-conclusion, these specifications will change to conform to the ISO C9x standard
-decision.
-.sp
+public review draft of the ISO C9x standard at that time. The \fB%g\fR and
+\fB%G\fR specifications were adopted in the formal standard. The other two
+were not, and should not be used in portable applications.
.LP
The conversion specification for \fB%u\fR was changed in the Solaris 8 release.
This change was based on the XPG4 specification.
-.sp
.LP
If using the \fB%Z\fR specifier and \fBzoneinfo\fR timezones and if the input
date is outside the range 20:45:52 UTC, December 13, 1901 to 03:14:07 UTC,
January 19, 2038, the timezone name may not be correct.
-.sp
.LP
The conversion specification for \fB%+\fR was added in illumos.
It is not part of any standard, although it is available on a number
of other platforms.
Its use is discouraged for conforming applications.