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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
@@ -1,66 +1,73 @@
'\" te
+.\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
.\" Copyright 1989 AT&T Copyright (c) 1992, X/Open Company Limited All Rights Reserved Portions Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved
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-.TH MBLEN 3C "Jul 24, 2002"
+.TH MBLEN 3C "Jun 24, 2014"
.SH NAME
-mblen \- get number of bytes in a character
+mblen, mblen_l \- get number of bytes in a character
.SH SYNOPSIS
.LP
.nf
#include <stdlib.h>
\fBint\fR \fBmblen\fR(\fBconst char *\fR\fIs\fR, \fBsize_t\fR \fIn\fR);
.fi
+.LP
+.nf
+#include <stdlib.h>
+#include <xlocale.h>
+\fBint\fR \fBmblen_l\fR(\fBconst char *\fR\fIs\fR, \fBsize_t\fR \fIn\fR, \fBlocale_t\fR \fIloc\fR);
+.fi
+
.SH DESCRIPTION
.sp
.LP
-If \fIs\fR is not a null pointer, \fBmblen()\fR determines the number of bytes
-constituting the character pointed to by \fIs\fR. It is equivalent to:
-.sp
+If \fIs\fR is not a null pointer, \fBmblen()\fR and \fBmblen_l()\fR
+determine the number of bytes constituting the character pointed to by
+\fIs\fR. The call
+.IP
+\fBmblen(\fIs\fR, \fIn\fR)\fR;
.LP
-\fBmbtowc((wchar_t *)0, \fR\fIs\fR, \fIn\fR);
-.sp
+is equivalent to:
+.IP
+\fBmbtowc\fR((\fBwchar_t\fR *)0, \fIs\fR, \fIn\fR);
.LP
A call with \fIs\fR as a null pointer causes this function to return \fB0\fR.
-The behavior of this function is affected by the \fBLC_CTYPE\fR category of the
-current locale.
+.LP
+Whereas the behavior of the \fBmblen()\fR function is affected by the
+\fBLC_CTYPE\fR category of the current locale, the behavior of
+\fBmblen_l()\fR is affected by the \fBLC_CTYPE\fR category of the
+locale specified by \fIloc\fR.
.SH RETURN VALUES
-.sp
.LP
-If \fIs\fR is a null pointer, \fBmblen()\fR returns \fB0\fR. It \fIs\fR is not
-a null pointer, \fBmblen()\fR returns \fB0\fR (if \fIs\fR points to the null
+If \fIs\fR is a null pointer, \fBmblen()\fR and \fBmblen_l()\fR returns \fB0\fR. It \fIs\fR is not
+a null pointer, \fBmblen()\fR and \fBmblen_l()\fR returns \fB0\fR (if \fIs\fR points to the null
byte), the number of bytes that constitute the character (if the next \fIn\fR
or fewer bytes form a valid character), or \fB\(mi1\fR (if they do not form a
valid character) and may set \fBerrno\fR to indicate the error. In no case will
the value returned be greater than \fIn\fR or the value of the \fBMB_CUR_MAX\fR
macro.
.SH ERRORS
.sp
.LP
-The \fBmblen()\fR function may fail if:
+The \fBmblen()\fR and \fBmblen_l()\fR functions may fail if:
.sp
.ne 2
.na
\fB\fBEILSEQ\fR\fR
.ad
.RS 10n
Invalid character sequence is detected.
.RE
-
-.SH USAGE
-.sp
-.LP
-The \fBmblen()\fR function can be used safely in multithreaded applications, as
-long as \fBsetlocale\fR(3C) is not being called to change the locale.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp
@@ -72,15 +79,21 @@
l | l .
ATTRIBUTE TYPE ATTRIBUTE VALUE
_
CSI Enabled
_
-Interface Stability Standard
+Interface Stability See below.
_
-MT-Level MT-Safe with exceptions
+MT-Level MT-Safe
.TE
+.LP
+The
+.B mblen()
+function is Standard. The
+.B mblen_l()
+function is Uncommitted.
.SH SEE ALSO
-.sp
.LP
-\fBmbstowcs\fR(3C), \fBmbtowc\fR(3C), \fBsetlocale\fR(3C), \fBwcstombs\fR(3C),
-\fBwctomb\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)
+\fBmbstowcs\fR(3C), \fBmbtowc\fR(3C), \fBnewlocale\fR(3C), \fBsetlocale\fR(3C),
+\fBwcstombs\fR(3C), \fBwctomb\fR(3C), \fBuselocale\fR(3C) \fBattributes\fR(5),
+\fBstandards\fR(5)