Line data    Source code

       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             : #ifndef INCLUDED_DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
      21             : #define INCLUDED_DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
      22             : 
      23             : #include <rtl/ustrbuf.hxx>
      24             : #include <osl/diagnose.h>
      25             : 
      26             : #include <functional>
      27             : 
      28             : namespace dbaccess
      29             : {
      30             : 
      31             :     // TokenComposer
      32           0 :     struct TokenComposer : public ::std::unary_function< OUString, void >
      33             :     {
      34             :     private:
      35             :         #ifdef DBG_UTIL
      36             :         bool                    m_bUsed;
      37             :         #endif
      38             : 
      39             :     protected:
      40             :         OUStringBuffer   m_aBuffer;
      41             : 
      42             :     public:
      43          67 :         OUString getComposedAndClear()
      44             :         {
      45             :             #ifdef DBG_UTIL
      46             :             m_bUsed = true;
      47             :             #endif
      48          67 :             return m_aBuffer.makeStringAndClear();
      49             :         }
      50             : 
      51          66 :         void clear()
      52             :         {
      53             :             #ifdef DBG_UTIL
      54             :             m_bUsed = false;
      55             :             #endif
      56          66 :             m_aBuffer.makeStringAndClear();
      57          66 :         }
      58             : 
      59             :     public:
      60          34 :         TokenComposer()
      61             :         #ifdef DBG_UTIL
      62             :             :m_bUsed( false )
      63             :         #endif
      64          34 :         {
      65          34 :         }
      66             : 
      67          34 :         virtual ~TokenComposer()
      68          34 :         {
      69          34 :         }
      70             : 
      71           0 :         void operator() (const OUString& lhs)
      72             :         {
      73           0 :             append(lhs);
      74           0 :         }
      75             : 
      76         134 :         void append( const OUString& lhs )
      77             :         {
      78             :             #ifdef DBG_UTIL
      79             :             OSL_ENSURE( !m_bUsed, "FilterCreator::append: already used up!" );
      80             :             #endif
      81         134 :             if ( !lhs.isEmpty() )
      82             :             {
      83          59 :                 if ( !m_aBuffer.isEmpty() )
      84           0 :                     appendNonEmptyToNonEmpty( lhs );
      85             :                 else
      86          59 :                     m_aBuffer.append( lhs );
      87             :             }
      88         134 :         }
      89             : 
      90             :         /// append the given part. Only to be called when both the part and our buffer so far are not empty
      91             :         virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) = 0;
      92             :     };
      93             : 
      94             :     // FilterCreator
      95          75 :     struct FilterCreator : public TokenComposer
      96             :     {
      97           0 :         virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) SAL_OVERRIDE
      98             :         {
      99           0 :             m_aBuffer.insert( 0, (sal_Unicode)' ' );
     100           0 :             m_aBuffer.insert( 0, (sal_Unicode)'(' );
     101           0 :             m_aBuffer.appendAscii( " ) AND ( " );
     102           0 :             m_aBuffer.append( lhs );
     103           0 :             m_aBuffer.appendAscii( " )" );
     104           0 :         }
     105             :     };
     106             : 
     107             :     // FilterCreator
     108          26 :     struct OrderCreator : public TokenComposer
     109             :     {
     110           0 :         virtual void appendNonEmptyToNonEmpty( const OUString& lhs ) SAL_OVERRIDE
     111             :         {
     112           0 :             m_aBuffer.appendAscii( ", " );
     113           0 :             m_aBuffer.append( lhs );
     114           0 :         }
     115             :     };
     116             : 
     117             : } // namespace dbaccess
     118             : 
     119             : #endif // INCLUDED_DBACCESS_SOURCE_CORE_INC_COMPOSERTOOLS_HXX
     120             : 
     121             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */