reportdesign/source/core/misc/reportformula.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 <reportformula.hxx>
  21
  22 #include <rtl/ustrbuf.hxx>
  23
  24
  25 namespace rptui
  26 {
  27     namespace
  28     {
  29
  30         static const char sExpressionPrefix[] = "rpt:";
  31         static const char sFieldPrefix[] =  "field:";
  32     }
  33
  34
  35     //= ReportFormula
  36
  37
  38     ReportFormula::ReportFormula( const OUString& _rFormula )
  39         :m_eType( Invalid )
  40     {
  41         impl_construct( _rFormula );
  42     }
  43
  44
  45     ReportFormula::ReportFormula( const BindType _eType, const OUString& _rFieldOrExpression )
  46         :m_eType( _eType )
  47     {
  48         switch ( m_eType )
  49         {
  50         case Expression:
  51         {
  52             if ( _rFieldOrExpression.startsWith( sExpressionPrefix ) )
  53                 m_sCompleteFormula = _rFieldOrExpression;
  54             else
  55                 m_sCompleteFormula = sExpressionPrefix + _rFieldOrExpression;
  56         }
  57         break;
  58
  59         case Field:
  60         {
  61             OUStringBuffer aBuffer;
  62             aBuffer.append( sFieldPrefix );
  63             aBuffer.append( "[" );
  64             aBuffer.append( _rFieldOrExpression );
  65             aBuffer.append( "]" );
  66             m_sCompleteFormula = aBuffer.makeStringAndClear();
  67         }
  68         break;
  69         default:
  70             OSL_FAIL( "ReportFormula::ReportFormula: illegal bind type!" );
  71             return;
  72         }
  73
  74         m_sUndecoratedContent = _rFieldOrExpression;
  75     }
  76
  77     ReportFormula::~ReportFormula()
  78     {
  79     }
  80
  81     void ReportFormula::impl_construct( const OUString& _rFormula )
  82     {
  83         m_sCompleteFormula = _rFormula;
  84
  85         // is it an ordinary expression?
  86         if ( m_sCompleteFormula.startsWith( sExpressionPrefix, &m_sUndecoratedContent ) )
  87         {
  88             m_eType = Expression;
  89             return;
  90         }
  91
  92         /// does it refer to a field?
  93         if ( m_sCompleteFormula.startsWith( sFieldPrefix ) )
  94         {
  95             sal_Int32 nPrefixLen = strlen(sFieldPrefix);
  96             if  (   ( m_sCompleteFormula.getLength() >= nPrefixLen + 2 )
  97                 &&  ( m_sCompleteFormula[ nPrefixLen ] == '[' )
  98                 &&  ( m_sCompleteFormula[ m_sCompleteFormula.getLength() - 1 ] == ']' )
  99                 )
 100             {
 101                 m_eType = Field;
 102                 m_sUndecoratedContent = m_sCompleteFormula.copy( nPrefixLen + 1, m_sCompleteFormula.getLength() - nPrefixLen - 2 );
 103                 return;
 104             }
 105         }
 106
 107         m_eType = Invalid;
 108     }
 109
 110
 111     OUString ReportFormula::getBracketedFieldOrExpression() const
 112     {
 113         bool bIsField = ( getType() == Field );
 114         OUStringBuffer aFieldContent;
 115         if ( bIsField )
 116             aFieldContent.append( "[" );
 117         aFieldContent.append( getUndecoratedContent() );
 118         if ( bIsField )
 119             aFieldContent.append( "]" );
 120
 121         return aFieldContent.makeStringAndClear();
 122     }
 123
 124     bool                    ReportFormula::isValid() const { return getType() != Invalid; }
 125
 126     OUString ReportFormula::getEqualUndecoratedContent() const
 127     {
 128         OUStringBuffer aBuffer;
 129         aBuffer.append( "=" );
 130         aBuffer.append( getUndecoratedContent() );
 131         return aBuffer.makeStringAndClear();
 132     }
 133
 134
 135 } // namespace rptui
 136
 137
 138 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */