major abi changes:

* introduce the mbstate_t typedef.
impacts gnu libiconv, which has already been taken care of.

* Prepare for mb stuff to really exist, replace macro MB_CUR_MAX with
an external variable __mb_cur_max (impacts libX11 and various ports).

* use mbstate in all the mb <-> wchar functions with state.
* add a stub iswctype function allowing some ports to compile.

bash and gdiff are missing wcscoll, and need to be told there's no i18n
until this is fixed.

Discussed and matthieu, otto, millert, kettenis, deraadt.

Major libc bump

1 files changed, 132 insertions, 0 deletions

diff --git a/lib/libc/locale/wcstombs.3 b/lib/libc/locale/wcstombs.3
new file mode 100644
index 00000000000..e4a5fc9fff0
--- /dev/null
+++ b/lib/libc/locale/wcstombs.3
@@ -0,0 +1,132 @@
+.\" $OpenBSD: wcstombs.3,v 1.1 2005/05/11 18:44:12 espie Exp $
+.\" $NetBSD: wcstombs.3,v 1.5 2003/09/08 17:54:32 wiz Exp $
+.\"
+.\" Copyright (c)2002 Citrus Project,
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd February 4, 2002
+.Dt WCSTOMBS 3
+.Os
+.\" ----------------------------------------------------------------------
+.Sh NAME
+.Nm wcstombs
+.Nd converts a wide character string to a multibyte character string
+.\" ----------------------------------------------------------------------
+.Sh SYNOPSIS
+.Fd #include <stdlib.h>
+.Ft size_t
+.Fn wcstombs "const char * restrict s" "wchar_t * restrict pwcs" "size_t n"
+.\" ----------------------------------------------------------------------
+.Sh DESCRIPTION
+.Fn wcstombs
+converts the null-terminated wide character string pointed to by
+.Fa pwcs
+to the corresponding multibyte character string,
+and stores it in the array pointed to by
+.Fa s .
+This function may modify the first at most
+.Fa n
+bytes of the array pointed to by
+.Fa s .
+Each character will be converted as if
+.Xr wctomb 3
+is continuously called, except the internal state of
+.Xr wctomb 3
+will not be affected.
+.Pp
+For state-dependent encoding, the
+.Fn wcstombs
+implies the result multibyte character string pointed to by
+.Fa s
+always to begin with an initial state.
+.Pp
+The behaviour of the
+.Fn wcstombs
+is affected by the
+.Dv LC_CTYPE
+category of the current locale.
+.Pp
+There are special cases:
+.Bl -tag -width 012345678901
+.It s == NULL
+The
+.Fn wcstombs
+returns the number of bytes to store the whole multibyte character string
+corresponding to the wide character string pointed to by
+.Fa pwcs .
+In this case,
+.Fa n
+is ignored.
+.It pwcs == NULL
+Undefined (may causes the program to crash).
+.El
+.\" ----------------------------------------------------------------------
+.Sh RETURN VALUES
+.Fn wcstombs
+returns:
+.Bl -tag -width 012345678901
+.It 0 or positive
+Number of bytes stored in the array pointed to by
+.Fa s .
+There are no cases that the value returned is greater than
+.Fa n
+(unless
+.Fa s
+is a null pointer).
+If the return value is equal to
+.Fa n ,
+the string pointed to by
+.Fa s
+will not be null-terminated.
+.It (size_t)-1
+.Fa pwcs
+points the string containing invalid wide character.
+.Fn wcstombs
+also sets
+.Va errno
+to indicate the error.
+.El
+.\" ----------------------------------------------------------------------
+.Sh ERRORS
+.Fn wcstombs
+may cause an error in the following cases:
+.Bl -tag -width Er
+.It Bq Er EILSEQ
+.Fa pwcs
+Points to the string containing invalid wide character.
+.El
+.\" ----------------------------------------------------------------------
+.Sh SEE ALSO
+.Xr setlocale 3 ,
+.Xr wctomb 3
+.\" ----------------------------------------------------------------------
+.Sh STANDARDS
+The
+.Fn wcstombs
+function conforms to
+.St -ansiC .
+The restrict qualifier is added at
+.\" .St -isoC99 .
+ISO/IEC 9899/1999
+.Pq Dq ISO C99 .