src/setlocale.h

/***************************************************************************
 *
 * setlocale.h
 *
 * This is an internal header file used to implement the C++ Standard
 * Library. It should never be #included directly by a program.
 *
 * $Id: //stdlib/dev/source/stdlib/setlocale.h#5 $
 *
 ***************************************************************************
 *
 * Copyright (c) 1994-2005 Quovadx,  Inc., acting through its  Rogue Wave
 * Software division. Licensed under the Apache License, Version 2.0 (the
 * "License");  you may  not use this file except  in compliance with the
 * License.    You    may   obtain   a   copy   of    the   License    at
 * http://www.apache.org/licenses/LICENSE-2.0.    Unless   required    by
 * applicable law  or agreed to  in writing,  software  distributed under
 * the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR
 * CONDITIONS OF  ANY KIND, either  express or implied.  See  the License
 * for the specific language governing permissions  and limitations under
 * the License.
 * 
 **************************************************************************/

#ifndef _RWSTD_LOC_RW_SETLOCALE_H_INCLUDED
#define _RWSTD_LOC_RW_SETLOCALE_H_INCLUDED


#include "podarray.h"
#include <rw/_defs.h>


_RWSTD_NAMESPACE (__rw) { 

// class provides synchronized access to the C setlocale() facility
// if the first argument is 0, ctor locks, obtains the name of the
// current C locale (by calling setlocale (0)), and unlocks
// if the first argument is not 0, ctor locks and obtains and saves
// the name of the current C locale, and sets the C locale to that
// named by the first argument; dtor then resets the global C locale
// to what it was before the ctor invocation and unlocks

struct _RWSTD_EXPORT __rw_setlocale
{
    __rw_setlocale (const char* = 0, int = _RWSTD_LC_ALL, int = 0);

    ~__rw_setlocale ();

    // returns the saved name (will not be 0)
    const char* name () const {
        return _C_name;
    }

private:

    __rw_setlocale (const __rw_setlocale&);   // not defined
    void operator= (const __rw_setlocale&);   // not defined

    char  _C_namebuf [80];   // used if locale name fits
    char *_C_name;           // _C_namebuf if name fits, otherwise allocated
    int   _C_guard;          // non-0 when object owns the global lock
    int   _C_cat;            // saved LC_XXX category
};


char* __rw_locale_name (int, const char*, __rw_chararray&);


}   // namespace __rw


#endif   // _RWSTD_LOC_RW_SETLOCALE_H_INCLUDED