/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks 
 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
 * RCSL for the rights, obligations and limitations governing use of the 
 * contents of the file.  
 *  
 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
 *  
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * Technology Compatibility Kit Test Suite(s) Location: 
 *    http://www.helixcommunity.org/content/tck 
 * 
 * Contributor(s): 
 *  
 * ***** END LICENSE BLOCK ***** */ 

#ifndef _DBCS_H_
#define _DBCS_H_

#include "hlxclib/string.h"

#if defined(_WIN32) && !defined(WIN32_PLATFORM_PSPC)
#include <mbctype.h>
#endif // _WIN32

#include "hxtypes.h"

// DBCS - relative functions


/************************************************************************
 * These can be optimized for Unix since HXIsDBCSEnabled
 * is always FALSE in this case.
 */

#if defined(_UNIX) || defined(_SYMBIAN)
inline BOOL
HXIsDBCSEnabled()
{
    return FALSE;
}

inline char*
HXGetNextChar(const char* pChar)
{
    return pChar ? (char*)(pChar + 1) : NULL;
}

inline char*
HXGetPrevChar(const char* pStart, const char* pChar)
{
    return pChar ? (char*)(pChar - 1) : NULL;
}

inline BOOL
HXIsEqual(const char* pChar, char CharToCompare)
{
    return pChar ? (*pChar == CharToCompare) : FALSE;
}

inline char*
HXFindChar(const char* pStart, char CharToFind)
{
    return (char*)strchr(pStart, CharToFind);
}

inline char*
HXReverseFindChar(const char* pStart, char CharToFind)
{
    return (char*)strrchr(pStart, CharToFind);
}

inline char*
HXFindString(const char* pStart, const char* pString)
{
    return (char*)strstr(pStart, pString);
}


inline int
HXCompareStrings(const char* pString1, const char* pString2, size_t count)
{
    if (!pString1 && !pString2)
        return 0;

    if (!pString1)
	return -1;

    if (!pString2)
	return 1;

    return strncmp(pString1,pString2, count);
}

inline BOOL
HXIsLeadByte(char Byte)
{
    return FALSE;
}

inline char*
HXCopyStringN(char* pOutput, const char* pInput, size_t count)
{
    return (char*)strncpy(pOutput, pInput, count); /* Flawfinder: ignore */
}

inline INT32
GetDBCSCodePage(void) 
{
    return 0; 
}

/************************************************************************
 * Windows and Mac
 */
#else

BOOL   HXIsDBCSEnabled();
char*  HXGetNextChar(const char* pChar);
char*  HXGetPrevChar(const char* pStart, const char* pChar);
BOOL   HXIsEqual(const char* pChar, char CharToCompare);
char*  HXFindChar(const char* pStart, char CharToFind);
char*  HXReverseFindChar(const char* pStart, char CharToFind);
char*  HXFindString(const char* pStart, const char* pString);
int    HXCompareStrings(const char* pString1, const char* pString2, size_t count);
BOOL   HXIsLeadByte(char Byte);
char*  HXCopyStringN(char* pOutput, const char* pInput, size_t count);

// it is necessary for Mac and Unix to implement GetDBCSCodePage for
// those platforms.  All that is important, really, is that zero is
// returned on a non-DBCS machine.  But the code page in use probably
// has a number, so return it.
INT32 GetDBCSCodePage(void);
#endif

#endif // _DBCS_H_
 
