sal/textenc/converter.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 #include "sal/types.h"
  24
  25 #include "converter.hxx"
  26 #include "tenchelp.hxx"
  27 #include "unichars.hxx"
  28
  29 sal::detail::textenc::BadInputConversionAction
  30 sal::detail::textenc::handleBadInputTextToUnicodeConversion(
  31     bool bUndefined, bool bMultiByte, char cByte, sal_uInt32 nFlags,
  32     sal_Unicode ** pDestBufPtr, sal_Unicode * pDestBufEnd, sal_uInt32 * pInfo)
  33 {
  34     *pInfo |= bUndefined
  35         ? (bMultiByte
  36            ? RTL_TEXTTOUNICODE_INFO_MBUNDEFINED
  37            : RTL_TEXTTOUNICODE_INFO_UNDEFINED)
  38         : RTL_TEXTTOUNICODE_INFO_INVALID;
  39     switch (nFlags
  40             & (bUndefined
  41                ? (bMultiByte
  42                   ? RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_MASK
  43                   : RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MASK)
  44                : RTL_TEXTTOUNICODE_FLAGS_INVALID_MASK))
  45     {
  46     case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR:
  47     case RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR:
  48     case RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR:
  49         *pInfo |= RTL_TEXTTOUNICODE_INFO_ERROR;
  50         return BAD_INPUT_STOP;
  51
  52     case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_IGNORE:
  53     case RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_IGNORE:
  54     case RTL_TEXTTOUNICODE_FLAGS_INVALID_IGNORE:
  55         return BAD_INPUT_CONTINUE;
  56
  57     case RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MAPTOPRIVATE:
  58         if (*pDestBufPtr != pDestBufEnd)
  59         {
  60             *(*pDestBufPtr)++ = RTL_TEXTCVT_BYTE_PRIVATE_START
  61                 | ((unsigned char) cByte);
  62             return BAD_INPUT_CONTINUE;
  63         }
  64         else
  65             return BAD_INPUT_NO_OUTPUT;
  66
  67     default: // RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_DEFAULT,
  68              // RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT,
  69              // RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT
  70         if (*pDestBufPtr != pDestBufEnd)
  71         {
  72             *(*pDestBufPtr)++ = RTL_TEXTENC_UNICODE_REPLACEMENT_CHARACTER;
  73             return BAD_INPUT_CONTINUE;
  74         }
  75         else
  76             return BAD_INPUT_NO_OUTPUT;
  77     }
  78 }
  79
  80 sal::detail::textenc::BadInputConversionAction
  81 sal::detail::textenc::handleBadInputUnicodeToTextConversion(
  82     bool bUndefined, sal_uInt32 nUtf32, sal_uInt32 nFlags, char ** pDestBufPtr,
  83     char * pDestBufEnd, sal_uInt32 * pInfo, char const * pPrefix,
  84     sal_Size nPrefixLen, bool * pPrefixWritten)
  85 {
  86     // TODO! RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACE
  87     // RTL_UNICODETOTEXT_FLAGS_UNDEFINED_REPLACESTR
  88
  89     char cReplace;
  90
  91     if (bUndefined)
  92     {
  93         if (ImplIsControlOrFormat(nUtf32))
  94         {
  95             if ((nFlags & RTL_UNICODETOTEXT_FLAGS_CONTROL_IGNORE) != 0)
  96                 nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
  97         }
  98         else if (ImplIsPrivateUse(nUtf32))
  99         {
 100             if ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_IGNORE) != 0)
 101                 nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
 102             else if ((nFlags & RTL_UNICODETOTEXT_FLAGS_PRIVATE_MAPTO0) != 0)
 103                 nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0;
 104         }
 105         else if (ImplIsZeroWidth(nUtf32))
 106         {
 107             if ((nFlags & RTL_UNICODETOTEXT_FLAGS_NONSPACING_IGNORE) != 0)
 108                 nFlags = RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE;
 109         }
 110     }
 111     *pInfo |= bUndefined ? RTL_UNICODETOTEXT_INFO_UNDEFINED :
 112                            RTL_UNICODETOTEXT_INFO_INVALID;
 113     switch (nFlags & (bUndefined ? RTL_UNICODETOTEXT_FLAGS_UNDEFINED_MASK :
 114                                    RTL_UNICODETOTEXT_FLAGS_INVALID_MASK))
 115     {
 116     case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR:
 117     case RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR:
 118         *pInfo |= RTL_UNICODETOTEXT_INFO_ERROR;
 119         return BAD_INPUT_STOP;
 120
 121     case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_IGNORE:
 122     case RTL_UNICODETOTEXT_FLAGS_INVALID_IGNORE:
 123         if (pPrefixWritten)
 124             *pPrefixWritten = false;
 125         return BAD_INPUT_CONTINUE;
 126
 127     case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0:
 128     case RTL_UNICODETOTEXT_FLAGS_INVALID_0:
 129         cReplace = 0;
 130         break;
 131
 132     case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_QUESTIONMARK:
 133     case RTL_UNICODETOTEXT_FLAGS_INVALID_QUESTIONMARK:
 134     default: // RTL_UNICODETOTEXT_FLAGS_UNDEFINED_DEFAULT,
 135              // RTL_UNICODETOTEXT_FLAGS_INVALID_DEFAULT
 136         cReplace = '?';
 137         break;
 138
 139     case RTL_UNICODETOTEXT_FLAGS_UNDEFINED_UNDERLINE:
 140     case RTL_UNICODETOTEXT_FLAGS_INVALID_UNDERLINE:
 141         cReplace = '_';
 142         break;
 143     }
 144     if ((sal_Size) (pDestBufEnd - *pDestBufPtr) > nPrefixLen)
 145     {
 146         while (nPrefixLen-- > 0)
 147             *(*pDestBufPtr)++ = *pPrefix++;
 148         *(*pDestBufPtr)++ = cReplace;
 149         if (pPrefixWritten)
 150             *pPrefixWritten = true;
 151         return BAD_INPUT_CONTINUE;
 152     }
 153     else
 154         return BAD_INPUT_NO_OUTPUT;
 155 }
 156
 157 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */