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_uChar               c;
  36     sal_Unicode*            pEndDestBuf;
  37     const char*         pEndSrcBuf;
  38
  39     *pInfo = 0;
  40     pEndDestBuf = pDestBuf+nDestChars;
  41     pEndSrcBuf  = pSrcBuf+nSrcBytes;
  42     while ( pSrcBuf < pEndSrcBuf )
  43     {
  44         if ( pDestBuf == pEndDestBuf )
  45         {
  46             *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
  47             break;
  48         }
  49
  50         /* 0-31 (all Control-Character get the same Unicode value) */
  51         c = (sal_uChar)*pSrcBuf;
  52         if ( c <= 0x1F )
  53             *pDestBuf = (sal_Unicode)c;
  54         else
  55             *pDestBuf = ((sal_Unicode)c)+0xF000;
  56         pDestBuf++;
  57         pSrcBuf++;
  58     }
  59
  60     *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);
  61     return (nDestChars - (pEndDestBuf-pDestBuf));
  62 }
  63
  64 sal_Size ImplUnicodeToSymbol( SAL_UNUSED_PARAMETER const void*,
  65                               SAL_UNUSED_PARAMETER void*,
  66                               const sal_Unicode* pSrcBuf, sal_Size nSrcChars,
  67                               char* pDestBuf, sal_Size nDestBytes,
  68                               sal_uInt32 nFlags, sal_uInt32* pInfo,
  69                               sal_Size* pSrcCvtChars )
  70 {
  71     sal_Unicode             c;
  72     char*               pEndDestBuf;
  73     const sal_Unicode*      pEndSrcBuf;
  74
  75     *pInfo = 0;
  76     pEndDestBuf = pDestBuf+nDestBytes;
  77     pEndSrcBuf  = pSrcBuf+nSrcChars;
  78     while ( pSrcBuf < pEndSrcBuf )
  79     {
  80         if ( pDestBuf == pEndDestBuf )
  81         {
  82             *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
  83             break;
  84         }
  85
  86         c = *pSrcBuf;
  87         if ( (c >= 0xF000) && (c <= 0xF0FF) )
  88         {
  89             *pDestBuf = static_cast< char >(static_cast< unsigned char >(c-0xF000));
  90             pDestBuf++;
  91             pSrcBuf++;
  92         }
  93         // Normally 0x001F, but in many cases also symbol characters
  94         // are stored in the first 256 bytes, so that we don't change
  95         // these values
  96         else if ( c <= 0x00FF )
  97         {
  98             *pDestBuf = static_cast< char >(static_cast< unsigned char >(c));
  99             pDestBuf++;
 100             pSrcBuf++;
 101         }
 102         else
 103         {
 104             if ( nFlags & RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE )
 105             {
 106                 /* !!! */
 107                 /* Only ascii  characters < 0x1F */
 108             }
 109
 110             /* Handle undefined and surrogates characters */
 111             /* (all surrogates characters are undefined) */
 112             if (!sal::detail::textenc::handleUndefinedUnicodeToTextChar(
 113                     &pSrcBuf, pEndSrcBuf, &pDestBuf, pEndDestBuf, nFlags,
 114                     pInfo))
 115                 break;
 116         }
 117     }
 118
 119     *pSrcCvtChars = nSrcChars - (pEndSrcBuf-pSrcBuf);
 120     return (nDestBytes - (pEndDestBuf-pDestBuf));
 121 }
 122
 123 sal_Size ImplUpperCharToUnicode( const void* pData,
 124                             SAL_UNUSED_PARAMETER void*,
 125                             const char* pSrcBuf, sal_Size nSrcBytes,
 126                             sal_Unicode* pDestBuf, sal_Size nDestChars,
 127                             SAL_UNUSED_PARAMETER sal_uInt32, sal_uInt32* pInfo,
 128                             sal_Size* pSrcCvtBytes )
 129 {
 130     sal_uChar                   c;
 131     sal_Unicode                 cConv;
 132     const ImplByteConvertData*  pConvertData = (const ImplByteConvertData*)pData;
 133     sal_Unicode*                pEndDestBuf;
 134     const char*             pEndSrcBuf;
 135
 136     *pInfo = 0;
 137     pEndDestBuf = pDestBuf+nDestChars;
 138     pEndSrcBuf  = pSrcBuf+nSrcBytes;
 139     if ( pDestBuf == pEndDestBuf )
 140     {
 141         *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR | RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
 142         *pSrcCvtBytes = 0;
 143         return 0;
 144     }
 145     while ( pSrcBuf < pEndSrcBuf )
 146     {
 147         c = (sal_uChar)*pSrcBuf;
 148         if (c < 0x80)
 149             cConv = c;
 150         else
 151             // c <= 0xFF is implied.
 152             cConv = pConvertData->mpToUniTab1[c - 0x80];
 153
 154         *pDestBuf = cConv;
 155         pDestBuf++;
 156         pSrcBuf++;
 157     }
 158
 159     *pSrcCvtBytes = nSrcBytes - (pEndSrcBuf-pSrcBuf);
 160     return (nDestChars - (pEndDestBuf-pDestBuf));
 161 }
 162
 163 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */