sc/source/core/tool/unitconv.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.
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   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 <com/sun/star/uno/Sequence.hxx>
  21
  22 #include <unitconv.hxx>
  23 #include <global.hxx>
  24 #include <optutil.hxx>
  25
  26 using namespace utl;
  27 using namespace com::sun::star::uno;
  28
  29 const sal_Unicode cDelim = 0x01;        // delimiter between From and To
  30
  31 // ScUnitConverterData
  32 ScUnitConverterData::ScUnitConverterData(
  33     std::u16string_view rFromUnit, std::u16string_view rToUnit, double fValue ) :
  34     maIndexString(BuildIndexString(rFromUnit, rToUnit)),
  35     mfValue(fValue) {}
  36
  37 OUString ScUnitConverterData::BuildIndexString(
  38     std::u16string_view rFromUnit, std::u16string_view rToUnit )
  39 {
  40     return rFromUnit + OUStringChar(cDelim) + rToUnit;
  41 }
  42
  43 // ScUnitConverter
  44 constexpr OUStringLiteral CFGPATH_UNIT = u"Office.Calc/UnitConversion";
  45 constexpr OUStringLiteral CFGSTR_UNIT_FROM = u"FromUnit";
  46 constexpr OUStringLiteral CFGSTR_UNIT_TO = u"ToUnit";
  47 constexpr OUStringLiteral CFGSTR_UNIT_FACTOR = u"Factor";
  48
  49 ScUnitConverter::ScUnitConverter()
  50 {
  51     // read from configuration - "convert.ini" is no longer used
  52     //TODO: config item as member to allow change of values
  53
  54     ScLinkConfigItem aConfigItem( CFGPATH_UNIT );
  55
  56     // empty node name -> use the config item's path itself
  57     const Sequence<OUString> aNodeNames = aConfigItem.GetNodeNames( u""_ustr );
  58
  59     tools::Long nNodeCount = aNodeNames.getLength();
  60     if ( !nNodeCount )
  61         return;
  62
  63     Sequence<OUString> aValNames( nNodeCount * 3 );
  64     OUString* pValNameArray = aValNames.getArray();
  65     const OUString sSlash('/');
  66
  67     tools::Long nIndex = 0;
  68     for (const OUString& rNode : aNodeNames)
  69     {
  70         OUString sPrefix = rNode + sSlash;
  71
  72         pValNameArray[nIndex++] = sPrefix + CFGSTR_UNIT_FROM;
  73         pValNameArray[nIndex++] = sPrefix + CFGSTR_UNIT_TO;
  74         pValNameArray[nIndex++] = sPrefix + CFGSTR_UNIT_FACTOR;
  75     }
  76
  77     Sequence<Any> aProperties = aConfigItem.GetProperties(aValNames);
  78
  79     if (aProperties.getLength() != aValNames.getLength())
  80         return;
  81
  82     const Any* pProperties = aProperties.getConstArray();
  83
  84     OUString sFromUnit;
  85     OUString sToUnit;
  86     double fFactor = 0;
  87
  88     nIndex = 0;
  89     for (tools::Long i=0; i<nNodeCount; i++)
  90     {
  91         pProperties[nIndex++] >>= sFromUnit;
  92         pProperties[nIndex++] >>= sToUnit;
  93         pProperties[nIndex++] >>= fFactor;
  94
  95         ScUnitConverterData aNew(sFromUnit, sToUnit, fFactor);
  96         OUString const aIndex = aNew.GetIndexString();
  97         maData.insert(std::make_pair(aIndex, aNew));
  98     }
  99 }
 100
 101 ScUnitConverter::~ScUnitConverter() {}
 102
 103 bool ScUnitConverter::GetValue(
 104     double& fValue, std::u16string_view rFromUnit, std::u16string_view rToUnit ) const
 105 {
 106     OUString aIndex = ScUnitConverterData::BuildIndexString(rFromUnit, rToUnit);
 107     MapType::const_iterator it = maData.find(aIndex);
 108     if (it == maData.end())
 109     {
 110         fValue = 1.0;
 111         return false;
 112     }
 113
 114     fValue = it->second.GetValue();
 115     return true;
 116 }
 117
 118 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */