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