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//===========================================================================
//
// mbtowc_c.cxx
//
// Internal __mbtowc_c() routine
//
//===========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos 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 General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//===========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): jjohnstn
// Contributors: jjohnstn
// Date: 2000-11-24
// Purpose: Provide internal use __mbtowc_c() routine
// Description: C locale version of mbtowc()
// Usage:
//
//####DESCRIPTIONEND####
//
//===========================================================================
//
// CONFIGURATION
#include <pkgconf/libc_i18n.h> // Configuration header
// INCLUDES
#include <cyg/infra/cyg_type.h> // Common type definitions
#include <cyg/infra/cyg_trac.h> // Tracing support
#include <cyg/infra/cyg_ass.h> // Assertion support
#include <locale.h>
#include <stdlib.h> // Header for this file
#include <string.h> // strcmp definition
#include <stddef.h> // size_t definition
#include "internal.h" // internal __isxxxx macros
// TRACE
#if defined(CYGDBG_USE_TRACING) && defined(CYGNUM_LIBC_STDLIB_MBTOWC_TRACE_LEVEL)
static int mbtowc_trace = CYGNUM_LIBC_STDLIB_MBTOWC_TRACE_LEVEL;
# define TL1 (0 < mbtowc_trace)
#else
# define TL1 (0)
#endif
// STATICS
// FUNCTIONS
int
__mbtowc_c ( wchar_t *pwc, const char *s, size_t n, int *state )
{
wchar_t dummy;
unsigned char *t = (unsigned char *)s;
int retval;
CYG_REPORT_FUNCNAMETYPE( "__mbtowc_c", "returning %d" );
CYG_REPORT_FUNCARG4( "pwc=%08x, s=%08x, n=%ud, state=%08x", pwc, s, n, state );
if (pwc != NULL)
CYG_CHECK_DATA_PTR( pwc, "pwc is not a valid pointer!" );
if (s != NULL)
CYG_CHECK_DATA_PTR( s, "s is not a valid pointer!" );
if (pwc == NULL)
pwc = &dummy;
if (s != NULL && n == 0)
{
retval = -1;
CYG_REPORT_RETVAL (retval);
return retval;
}
if (s == NULL)
retval = 0; /* not state-dependent */
else
{
if (pwc)
*pwc = (wchar_t)*t;
retval = (*t != '\0');
}
CYG_REPORT_RETVAL (retval);
return retval;
} // __mbtowc_c()
// EOF mbtowc_c.cxx
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