reportdesign/source/core/misc/reportformula.cxx

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  30 #include "precompiled_reportdesign.hxx"
  31 #include "reportformula.hxx"
  32
  33 /** === begin UNO includes === **/
  34 /** === end UNO includes === **/
  35
  36 #include <rtl/ustrbuf.hxx>
  37
  38 //........................................................................
  39 namespace rptui
  40 {
  41 //........................................................................
  42
  43         /** === begin UNO using === **/
  44     using ::com::sun::star::uno::Any;
  45         /** === end UNO using === **/
  46
  47     namespace
  48     {
  49         //----------------------------------------------------------------
  50         const ::rtl::OUString&  lcl_getExpressionPrefix( sal_Int32* _pTakeLengthOrNull = NULL )
  51         {
  52             static ::rtl::OUString s_sPrefix( RTL_CONSTASCII_USTRINGPARAM( "rpt:" ) );
  53             if ( _pTakeLengthOrNull )
  54                 *_pTakeLengthOrNull = s_sPrefix.getLength();
  55             return s_sPrefix;
  56         }
  57
  58         //----------------------------------------------------------------
  59         const ::rtl::OUString&  lcl_getFieldPrefix( sal_Int32* _pTakeLengthOrNull = NULL )
  60         {
  61             static ::rtl::OUString s_sPrefix( RTL_CONSTASCII_USTRINGPARAM( "field:" ) );
  62             if ( _pTakeLengthOrNull )
  63                 *_pTakeLengthOrNull = s_sPrefix.getLength();
  64             return s_sPrefix;
  65         }
  66     }
  67
  68         //====================================================================
  69         //= ReportFormula
  70         //====================================================================
  71         //--------------------------------------------------------------------
  72     ReportFormula::ReportFormula()
  73         :m_eType( Invalid )
  74     {
  75     }
  76
  77         //--------------------------------------------------------------------
  78     ReportFormula::ReportFormula( const ::rtl::OUString& _rFormula )
  79         :m_eType( Invalid )
  80     {
  81         impl_construct( _rFormula );
  82     }
  83
  84         //--------------------------------------------------------------------
  85     ReportFormula::ReportFormula( const BindType _eType, const ::rtl::OUString& _rFieldOrExpression )
  86         :m_eType( _eType )
  87     {
  88         switch ( m_eType )
  89         {
  90         case Expression:
  91         {
  92             if ( _rFieldOrExpression.indexOf( lcl_getExpressionPrefix() ) == 0 )
  93                 m_sCompleteFormula = _rFieldOrExpression;
  94             else
  95                 m_sCompleteFormula = lcl_getExpressionPrefix() + _rFieldOrExpression;
  96         }
  97         break;
  98
  99         case Field:
 100         {
 101             ::rtl::OUStringBuffer aBuffer;
 102             aBuffer.append( lcl_getFieldPrefix() );
 103             aBuffer.appendAscii( "[" );
 104             aBuffer.append( _rFieldOrExpression );
 105             aBuffer.appendAscii( "]" );
 106             m_sCompleteFormula = aBuffer.makeStringAndClear();
 107         }
 108         break;
 109         default:
 110             OSL_ENSURE( false, "ReportFormula::ReportFormula: illegal bind type!" );
 111             return;
 112         }
 113
 114         m_sUndecoratedContent = _rFieldOrExpression;
 115     }
 116
 117         //--------------------------------------------------------------------
 118     void ReportFormula::impl_construct( const ::rtl::OUString& _rFormula )
 119     {
 120         m_sCompleteFormula = _rFormula;
 121
 122         sal_Int32 nPrefixLen( -1 );
 123         // is it an ordinary expression?
 124         if ( m_sCompleteFormula.indexOf( lcl_getExpressionPrefix( &nPrefixLen ) ) == 0 )
 125         {
 126             m_eType = Expression;
 127             m_sUndecoratedContent = m_sCompleteFormula.copy( nPrefixLen );
 128             return;
 129         }
 130
 131         /// does it refer to a field?
 132         if ( m_sCompleteFormula.indexOf( lcl_getFieldPrefix( &nPrefixLen ) ) == 0 )
 133         {
 134             if  (   ( m_sCompleteFormula.getLength() >= nPrefixLen + 2 )
 135                 &&  ( m_sCompleteFormula[ nPrefixLen ] == '[' )
 136                 &&  ( m_sCompleteFormula[ m_sCompleteFormula.getLength() - 1 ] == ']' )
 137                 )
 138             {
 139                 m_eType = Field;
 140                 m_sUndecoratedContent = m_sCompleteFormula.copy( nPrefixLen + 1, m_sCompleteFormula.getLength() - nPrefixLen - 2 );
 141                 return;
 142             }
 143         }
 144
 145         m_eType = Invalid;
 146     }
 147
 148     //--------------------------------------------------------------------
 149     ::rtl::OUString ReportFormula::getBracketedFieldOrExpression() const
 150     {
 151         bool bIsField = ( getType() == Field );
 152         ::rtl::OUStringBuffer aFieldContent;
 153         if ( bIsField )
 154             aFieldContent.appendAscii( "[" );
 155         aFieldContent.append( getUndecoratedContent() );
 156         if ( bIsField )
 157             aFieldContent.appendAscii( "]" );
 158
 159         return aFieldContent.makeStringAndClear();
 160     }
 161
 162 //........................................................................
 163 } // namespace rptui
 164 //........................................................................
 165