glibc/stdlib/wctomb.c

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/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include "../locale/localeinfo.h"
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#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
extern long int _mb_shift; /* Defined in mbtowc.c. */
/* Convert WCHAR into its multibyte character representation,
putting this in S and returning its length. */
int
DEFUN(wctomb, (s, wchar), register char *s AND wchar_t wchar)
{
#if 0
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register CONST mb_char *mb;
if (_ctype_info->mbchar == NULL)
mb = NULL;
else
mb = _ctype_info->mbchar->mb_chars;
#endif
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/* If S is NULL, just say if we're shifted or not. */
if (s == NULL)
return _mb_shift != 0;
if (wchar == (wchar_t) '\0')
{
_mb_shift = 0;
/* See ANSI 4.4.1.1, line 21. */
if (s != NULL)
*s = '\0';
return 1;
}
Thu Mar 16 00:04:41 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * locale/C-ctype.c: New correct data generated by drepper. * Rules: Don't use $(libc.a). Parsing of grouped numbers contributed by Ulrich Drepper. * stdlib/strtol.c (__strtol_internal): Renamed from strtol. Take new flag arg; if nonzero, parse locale-dependent thousands grouping and interpret only the prefix that is correctly grouped. (strtol): Define this to call _strtol_internal with zero for the flag. Use a weak symbol for the definition. * stdlib/strtod.c (strtod, __strtod_internal): Likewise. Check for the exponent of the number overflowing the float format. * stdlib/stdlib.h (__strtof, __strtold): Declarations removed. (__strto{f,d,ld,l,ul,q,uq}_internal): Declare these functions. [__OPTIMIZE__]: Define inline functions calling those. * stdlib/grouping.h: New file, written by drepper. * stdlib/Makefile (distribute): Add grouping.h. * stdio/vfscanf.c: Grok %' modifier to numeric conversions. Call __strtoX_internal with the grouping flag set iff the modifier is present. Wed Mar 15 00:40:54 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/generic/memchr.c: Fix typos: limit.h -> limits.h. * mach/Machrules: Produce static deps for all object flavors. [interface-library]: Remove all these variables and rules. ($(interface-library)-routines): Define this variable. (extra-libs): Append $(interface-library) to this. * mach/Makefile (interface-library): Omit .a suffix. * hurd/Makefile: Likewise. Tue Mar 14 23:40:31 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * stdio/internals.c (flushbuf): If !FLUSH_ONLY, don't skip out early if no new data in buffer after priming. * Makerules (object-suffixes, libtypes): Move all these variables to Makeconfig. * Makeconfig (object-suffixes, libtypes): Moved here from Makerules. * Makerules (build-extra-lib): New canned sequence. * sysdeps/mach/hurd/euidaccess.c: Include fcntl.h. Declare ERR; fix uses of FILE and PORT. Remove bogus weak alias for `access'. * sysdeps/mach/hurd/dirfd.c: Include hurd/fd.h and errno.h. Add missing semicolon. * sysdeps/mach/hurd/opendir.c: Include hurd/fd.h. Use a `struct hurd_fd *' temp var, since DIRP->__fd is a `void *'. * sysdeps/mach/hurd/readdir.c: Include hurd/fd.h. * stdlib/wcstombs.c: #if 0 out code for non-ASCII chars until the locale data format is implemented. * sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Pass &__sigreturn on the stack to the trampoline code, so it is not position-dependent. * stdio/printf_fp.c (NDEBUG): Define this to disable assert. Don't include <stdarg.h>. (__printf_fp): Last arg ARGS is now `const void **const'; dereference ARGS[0] instead of using va_arg. * locale/setlocale.c: In LC_ALL case, initialize CATEGORY before loop to install data. * locale/loadlocale.c (_nl_category_num_items): Use _NL_ITEM_INDEX to extract number from item code. (_nl_load_locale): Close the descriptor when finished. * malloc/realloc.c (_realloc_internal): Call _malloc_internal in place of malloc. * time/tzfile.c (__tzfile_default): Initialize RULE_STDOFF to zero.
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else /* if (mb == NULL) */
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{
if ((wchar_t) (char) wchar == wchar && isascii ((char) wchar))
{
/* A normal ASCII character translates to itself. */
if (s != NULL)
*s = (char) wchar;
return 1;
}
return -1;
}
#if 1
return -1;
#else
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mb += wchar + _mb_shift;
if (mb->string == NULL || mb->len == 0)
return -1;
memcpy((PTR) s, (CONST PTR) mb->string, mb->len + 1);
_mb_shift += mb->shift;
return mb->len;
#endif
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}