svl/source/misc/lngmisc.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
  21 #include <svl/lngmisc.hxx>
  22
  23 #include <comphelper/string.hxx>
  24 #include <rtl/ustrbuf.hxx>
  25 #include <tools/debug.hxx>
  26
  27 namespace linguistic
  28 {
  29     sal_Int32 GetNumControlChars(std::u16string_view rTxt)
  30     {
  31         sal_Int32 nCnt = 0;
  32         for (size_t i = 0; i < rTxt.size(); ++i)
  33             if (IsControlChar(rTxt[i]))
  34                 ++nCnt;
  35         return nCnt;
  36     }
  37
  38     bool RemoveHyphens(OUString &rTxt)
  39     {
  40         sal_Int32 n = rTxt.getLength();
  41         rTxt = rTxt.replaceAll(OUStringChar(SVT_SOFT_HYPHEN), "");
  42         rTxt = rTxt.replaceAll(OUStringChar(SVT_HARD_HYPHEN), "");
  43         return n != rTxt.getLength();
  44     }
  45
  46     bool RemoveControlChars(OUString &rTxt)
  47     {
  48         sal_Int32 nSize = rTxt.getLength() - GetNumControlChars(rTxt);
  49         if(nSize == rTxt.getLength())
  50             return false;
  51
  52         OUStringBuffer aBuf(nSize);
  53         aBuf.setLength(nSize);
  54         for (sal_Int32 i = 0, j = 0; i < rTxt.getLength() && j < nSize; ++i)
  55             if (!IsControlChar(rTxt[i]))
  56                 aBuf[j++] = rTxt[i];
  57
  58         rTxt = aBuf.makeStringAndClear();
  59         DBG_ASSERT(rTxt.getLength() == nSize, "GetNumControlChars returned a different number of control characters than were actually removed.");
  60
  61         return true;
  62     }
  63
  64     bool ReplaceControlChars(OUString &rTxt)
  65     {
  66         // non breaking field character
  67         static const char CH_TXTATR_INWORD = static_cast<char>(0x02);
  68
  69         // the resulting string looks like this:
  70         // 1. non breaking field characters get removed
  71         // 2. remaining control characters will be replaced by ' '
  72
  73         if (GetNumControlChars(rTxt) == 0)
  74             return false;
  75
  76         sal_Int32 n = rTxt.getLength();
  77
  78         OUStringBuffer aBuf(n);
  79         aBuf.setLength(n);
  80
  81         sal_Int32 j = 0;
  82         for (sal_Int32 i = 0; i < n && j < n; ++i)
  83         {
  84             if (CH_TXTATR_INWORD == rTxt[i])
  85                 continue;
  86
  87             aBuf[j++] = IsControlChar(rTxt[i]) ? ' ' : rTxt[i];
  88         }
  89
  90         aBuf.setLength(j);
  91         rTxt = aBuf.makeStringAndClear();
  92
  93         return true;
  94     }
  95
  96     OUString GetThesaurusReplaceText(const OUString &rText)
  97     {
  98         // The strings for synonyms returned by the thesaurus sometimes have some
  99         // explanation text put in between '(' and ')' or a trailing '*'.
 100         // These parts should not be put in the ReplaceEdit Text that may get
 101         // inserted into the document. Thus we strip them from the text.
 102
 103         OUString aText(rText);
 104
 105         sal_Int32 nPos = aText.indexOf('(');
 106         while (nPos >= 0)
 107         {
 108             sal_Int32 nEnd = aText.indexOf(')', nPos);
 109             if (nEnd >= 0)
 110             {
 111                 OUStringBuffer aTextBuf(aText);
 112                 aTextBuf.remove(nPos, nEnd - nPos + 1);
 113                 aText = aTextBuf.makeStringAndClear();
 114             }
 115             else
 116                 break;
 117             nPos = aText.indexOf('(');
 118         }
 119
 120         nPos = aText.indexOf('*');
 121         if(nPos == 0)
 122             return OUString();
 123         else if(nPos > 0)
 124             aText = aText.copy(0, nPos);
 125
 126         // remove any possible remaining ' ' that may confuse the thesaurus
 127         // when it gets called with the text
 128         return comphelper::string::strip(aText, ' ');
 129     }
 130 } // namespace linguistic
 131
 132 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */