sal/textenc/tcvtbyte.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <rtl/textcvt.h>
  23
  24 #include "handleundefinedunicodetotextchar.hxx"
  25 #include "tcvtbyte.hxx"
  26 #include "tenchelp.hxx"
  27
  28 sal_Size ImplSymbolToUnicode( SAL_UNUSED_PARAMETER const void*,
  29                               SAL_UNUSED_PARAMETER void*,
  30                               const char* pSrcBuf, sal_Size nSrcBytes,
  31                               sal_Unicode* pDestBuf, sal_Size nDestChars,
  32                               SAL_UNUSED_PARAMETER sal_uInt32,
  33                               sal_uInt32* pInfo, sal_Size* pSrcCvtBytes )
  34 {
  35     sal_Unicode*            pEndDestBuf;
  36     const char*         pEndSrcBuf;
  37
  38     *pInfo = 0;
  39     pEndDestBuf = pDestBuf+nDestChars;
  40     pEndSrcBuf  = pSrcBuf+nSrcBytes;
  41     while ( pSrcBuf < pEndSrcBuf )
  42     {
  43         if ( pDestBuf == pEndDestBuf )
  44         {
  45             *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
  46             break;
  47         }
  48
  49         /* 0-31 (all Control-Character get the same Unicode value) */
  50         unsigned char c = static_cast<unsigned char>(*pSrcBuf);
  51         if ( c <= 0x1F )
  52             *pDestBuf = static_cast<sal_Unicode>(c);
  53         else
  54             *pDestBuf = static_cast<sal_Unicode>(c)+0xF000;
  55         pDestBuf++;
  56         pSrcBuf++;
  57     }
  58
  59     *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);
  60     return (nDestChars - (pEndDestBuf-pDestBuf));
  61 }
  62
  63 sal_Size ImplUnicodeToSymbol( SAL_UNUSED_PARAMETER const void*,
  64                               SAL_UNUSED_PARAMETER void*,
  65                               const sal_Unicode* pSrcBuf, sal_Size nSrcChars,
  66                               char* pDestBuf, sal_Size nDestBytes,
  67                               sal_uInt32 nFlags, sal_uInt32* pInfo,
  68                               sal_Size* pSrcCvtChars )
  69 {
  70     sal_Unicode             c;
  71     char*               pEndDestBuf;
  72     const sal_Unicode*      pEndSrcBuf;
  73
  74     *pInfo = 0;
  75     pEndDestBuf = pDestBuf+nDestBytes;
  76     pEndSrcBuf  = pSrcBuf+nSrcChars;
  77     while ( pSrcBuf < pEndSrcBuf )
  78     {
  79         if ( pDestBuf == pEndDestBuf )
  80         {
  81             *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
  82             break;
  83         }
  84
  85         c = *pSrcBuf;
  86         if ( (c >= 0xF000) && (c <= 0xF0FF) )
  87         {
  88             *pDestBuf = static_cast< char >(static_cast< unsigned char >(c-0xF000));
  89             pDestBuf++;
  90             pSrcBuf++;
  91         }
  92         // Normally 0x001F, but in many cases also symbol characters
  93         // are stored in the first 256 bytes, so that we don't change
  94         // these values
  95         else if ( c <= 0x00FF )
  96         {
  97             *pDestBuf = static_cast< char >(static_cast< unsigned char >(c));
  98             pDestBuf++;
  99             pSrcBuf++;
 100         }
 101         else
 102         {
 103             if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE )
 104             {
 105                 /* !!! */
 106                 /* Only ascii  characters < 0x1F */
 107             }
 108
 109             /* Handle undefined and surrogates characters */
 110             /* (all surrogates characters are undefined) */
 111             if (!sal::detail::textenc::handleUndefinedUnicodeToTextChar(
 112                     &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags,
 113                     pInfo))
 114                 break;
 115         }
 116     }
 117
 118     *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf);
 119     return (nDestBytes - (pEndDestBuf-pDestBuf));
 120 }
 121
 122 sal_Size ImplUpperCharToUnicode( const void* pData,
 123                             SAL_UNUSED_PARAMETER void*,
 124                             const char* pSrcBuf, sal_Size nSrcBytes,
 125                             sal_Unicode* pDestBuf, sal_Size nDestChars,
 126                             SAL_UNUSED_PARAMETER sal_uInt32, sal_uInt32* pInfo,
 127                             sal_Size* pSrcCvtBytes )
 128 {
 129     sal_Unicode                 cConv;
 130     const ImplByteConvertData*  pConvertData = static_cast<const ImplByteConvertData*>(pData);
 131     sal_Unicode*                pEndDestBuf;
 132     const char*             pEndSrcBuf;
 133
 134     *pInfo = 0;
 135     pEndDestBuf = pDestBuf+nDestChars;
 136     pEndSrcBuf  = pSrcBuf+nSrcBytes;
 137     if ( pDestBuf == pEndDestBuf )
 138     {
 139         *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
 140         *pSrcCvtBytes = 0;
 141         return 0;
 142     }
 143     while ( pSrcBuf < pEndSrcBuf )
 144     {
 145         unsigned char c = static_cast<unsigned char>(*pSrcBuf);
 146         if (c < 0x80)
 147             cConv = c;
 148         else
 149             // c <= 0xFF is implied.
 150             cConv = pConvertData->mpToUniTab1[c - 0x80];
 151
 152         *pDestBuf = cConv;
 153         pDestBuf++;
 154         pSrcBuf++;
 155     }
 156
 157     *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);
 158     return (nDestChars - (pEndDestBuf-pDestBuf));
 159 }
 160
 161 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */