/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you 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 .

 */

#include <sal/config.h>

#include <rtl/textcvt.h>

#include "handleundefinedunicodetotextchar.hxx"

#include "tcvtbyte.hxx"

#include "tenchelp.hxx"

sal_Size ImplSymbolToUnicode( SAL_UNUSED_PARAMETER const void*,

                              SAL_UNUSED_PARAMETER void*,

                              const char* pSrcBuf, sal_Size nSrcBytes,

                              sal_Unicode* pDestBuf, sal_Size nDestChars,

                              SAL_UNUSED_PARAMETER sal_uInt32,

                              sal_uInt32* pInfo, sal_Size* pSrcCvtBytes )

{

    sal_Unicode*            pEndDestBuf;

    const char*         pEndSrcBuf;

    *pInfo = 0;

    pEndDestBuf = pDestBuf+nDestChars;

    pEndSrcBuf  = pSrcBuf+nSrcBytes;

    while ( pSrcBuf < pEndSrcBuf )

    {

        if ( pDestBuf == pEndDestBuf )

        {

            *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;

            break;

        }

        /* 0-31 (all Control-Character get the same Unicode value) */

        unsigned char c = static_cast<unsigned char>(*pSrcBuf);

        if ( c <= 0x1F )

            *pDestBuf = static_cast<sal_Unicode>(c);

        else

            *pDestBuf = static_cast<sal_Unicode>(c)+0xF000;

        pDestBuf++;

        pSrcBuf++;

    }

    *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);

    return (nDestChars - (pEndDestBuf-pDestBuf));

}

sal_Size ImplUnicodeToSymbol( SAL_UNUSED_PARAMETER const void*,

                              SAL_UNUSED_PARAMETER void*,

                              const sal_Unicode* pSrcBuf, sal_Size nSrcChars,

                              char* pDestBuf, sal_Size nDestBytes,

                              sal_uInt32 nFlags, sal_uInt32* pInfo,

                              sal_Size* pSrcCvtChars )

{

    sal_Unicode             c;

    char*               pEndDestBuf;

    const sal_Unicode*      pEndSrcBuf;

    *pInfo = 0;

    pEndDestBuf = pDestBuf+nDestBytes;

    pEndSrcBuf  = pSrcBuf+nSrcChars;

    while ( pSrcBuf < pEndSrcBuf )

    {

        if ( pDestBuf == pEndDestBuf )

        {

            *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;

            break;

        }

        c = *pSrcBuf;

        if ( (c >= 0xF000) && (c <= 0xF0FF) )

        {

            *pDestBuf = static_cast< char >(static_cast< unsigned char >(c-0xF000));

            pDestBuf++;

            pSrcBuf++;

        }

        // Normally 0x001F, but in many cases also symbol characters

        // are stored in the first 256 bytes, so that we don't change

        // these values

        else if ( c <= 0x00FF )

        {

            *pDestBuf = static_cast< char >(static_cast< unsigned char >(c));

            pDestBuf++;

            pSrcBuf++;

        }

        else

        {

            if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE )

            {

                /* !!! */

                /* Only ascii  characters < 0x1F */

            }

            /* Handle undefined and surrogates characters */

            /* (all surrogates characters are undefined) */

            if (!sal::detail::textenc::handleUndefinedUnicodeToTextChar(

                    &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags,

                    pInfo))

                break;

        }

    }

    *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf);

    return (nDestBytes - (pEndDestBuf-pDestBuf));

}

sal_Size ImplUpperCharToUnicode( const void* pData,

                            SAL_UNUSED_PARAMETER void*,

                            const char* pSrcBuf, sal_Size nSrcBytes,

                            sal_Unicode* pDestBuf, sal_Size nDestChars,

                            SAL_UNUSED_PARAMETER sal_uInt32, sal_uInt32* pInfo,

                            sal_Size* pSrcCvtBytes )

{

    sal_Unicode                 cConv;

    const ImplByteConvertData*  pConvertData = static_cast<const ImplByteConvertData*>(pData);

    sal_Unicode*                pEndDestBuf;

    const char*             pEndSrcBuf;

    *pInfo = 0;

    pEndDestBuf = pDestBuf+nDestChars;

    pEndSrcBuf  = pSrcBuf+nSrcBytes;

    if ( pDestBuf == pEndDestBuf )

    {

        *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;

        *pSrcCvtBytes = 0;

        return 0;

    }

    while ( pSrcBuf < pEndSrcBuf )

    {

        unsigned char c = static_cast<unsigned char>(*pSrcBuf);

        if (c < 0x80)

            cConv = c;

        else

            // c <= 0xFF is implied.

            cConv = pConvertData->mpToUniTab1[c - 0x80];

        *pDestBuf = cConv;

        pDestBuf++;

        pSrcBuf++;

    }

    *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);

    return (nDestChars - (pEndDestBuf-pDestBuf));

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */