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glibc  2.9
mbsinit.c
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00001 /* Copyright (C) 1996, 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <string.h>
00021 #include <wchar.h>
00022 
00023 #undef mbsinit
00024 #undef __mbsinit
00025 
00026 /* In GNU libc the conversion functions only can convert between the
00027    fixed wide character representation and the multibyte
00028    representation of the same character set.  Since we use ISO 10646
00029    in UCS4 encoding for wide characters the best solution for
00030    multibyte characters is the UTF8 encoding.  I.e., the only state
00031    information is a counter of the processed bytes so far and the
00032    value collected so far.  Especially, we don't have different shift
00033    states.  */
00034 int
00035 __mbsinit (ps)
00036      const mbstate_t *ps;
00037 {
00038   return ps == NULL || ps->__count == 0;
00039 }
00040 weak_alias (__mbsinit, mbsinit)